User manual Object localisation
Contents
1. Premolar Molar Projection Lower Molar Premolar Canine incisors gt Canine Premolar 2 Molar 3 Select analysis Select exercise Projection H Fluoroscopic TH analysis E imaging E EL L jp JER Static imaging H Object H i localisation 3 p procedure p Saar payer regens N A ta Qbion AB 2009 06 11 ASK Try 70 dur lest2 che eccery gt nage by ME un JUR vJu meae think it ea mane WU La Te Sow olsripl 77 tas arer TE 4 Starting position The exercise starts with the tube head aligned for an orthoradial projection of the selected area Two radiographs are presented on the right monitor The left one gray frame is the resulting orthoradial radiograph and the right image white frame is an eccentric projection over the same area exposed from a random direction Use the 3D mouse to change the position of the scene to any desired view Brief instructions are presented in the instruction and feedback window on the right monitor AK Treta Jupiler 13 sranti Image hv ruiny I tees lu Jie pusit ysu built Lit saucen TE AS FY er preen 1 MR NAI alll POE z ra gt IGPap from Liv slugt put sur Ul LG I 2508 ru NSA Hal EVALMSTIDK The exposed adioc aprh is notes Meal wits The arent nr Hat The rar 6 ant 18 nos sims Nent seil Une 36 sukk ur see ate vot iT Rart neues2. wit the ecse y gt DNG imags Z The ur 2 su nur i 49 deere TASK 2 Anz 23 the rac yrajz 3 anc dec wee tae PI cos Han n the rar zaag rr art re alv rlu tok Ka bie ae sall ta Te pratan aar yo airh he radlopzc ae abject Is 42780 Wher Eraccdding the comet zabon It Ne radinan se hjer is s stzllsed as a white ull PSA ATION Coers E 2p sliv uf We blue ane bie white zall va atanp T Hint 2 Observe that you can use the 3D mouse to place the gray satellite in the centre of the cross hairs seen over the bandy ball By doing this you can view the patient model in exactly the same projection that was used when the orthoradial image gray frame was exposed If you place the white ball in the centre of the cross hairs you can view the patient model in exact the same projection in which the eccentric x ray image white frame was exposed START SA POSITION ee e reat an we 153 Pan anr tia CEEA IN Is 21 2cantle fy Myra Jesus 28 ron re idun clraetlan 1 The 70 du Icat she eccewr gt mage by mame be ast sd Ue pus sur yu think It ad ean esr atts mane JV i nueever bie 5 RPCAR ANYAR t the acuz PCMIN 2 Uke Pad SeT PA ATION The vsp see 18 2 aye 30 3 cub ide Jest ta Te enra w ane almaya 7 The arz seror le TZE dec ees IS your p Full Re ney ig ie babe head te varer ans ter Ine ran WETS Whe VIS ant wita the ece one imag 2
3. 5 Analyse the projections in the orthoradial and eccentric images Study the anatomic details and note the differences between their depictions in the two images When you think you know which projection has been used in the eccentric image try to duplicate it by positioning the tube head where you think it was situated when the eccentric image was exposed Use the conventional mouse right button to move the tube head To facilitate the procedure the central ray is automatically aligned to the centre of the detector Expose your own image by pressing the Proceed button Hint Grasp the back of the tube head housing and move it The task is easier to complete if the scene in pushed away from the user by means of 3D mouse so the complete tube head is visible Qbion AB 2009 06 12 EVAL ATION INE Rape ser NE TET 5 at IF Tal silile vese I 3 sie Ihe ar 2 Tor is dd 4 dec ees IMKE wour result ky nov 14 NE LIDE Fead 2 bie curve vue dur The TAS MAA amp AE TIS Yant sa OT ns same Sow elerpl T tas Lier 75 6 Your image is presented in a third window blue frame A fourth window presents a read ball the bandy ball with three satellites of different colours The gray satellite represents the projection for the orthoradial image gray frame The white one represents the projection used for the eccentric image white frame and the blue represents your image blue frame 7 Evaluation
4. The ar 2 uur i 4 9 deere Han af the rar aaqi 07 et re aliil vell ka bre se sull tate Frat antar yo ahi he realopze se objec Is lt Ute whe pracc ding Te come t pation st be raANpan IA hjer is v sualised as a ahile ill Sred T l S i TSA ATION Cees epson uf le blue une bis ahte aall ve etampr 7 rars T mer TE 9 When you have positioned the blue ball in the desired position push the Proceed button Qbion AB 2009 06 29 HE NE zoj xj ETE ae Toe airi af bie an st i leykoz sk im cledi cing t a late posme c an oblet dlspla 2d 1 lt al s of adloc aphs tube heziz vi die daterer Image 7 is an ART Val JP Ge ab fren ear SIV Movi I lube ee dlu tp sailiun yee t akt ha ohe the ecreraic mage MAE Expcsec ME K relle ill expos ar z ta aual ans Tar at he the j Preses 7 il Hint YALA Mt Tar mm nnsan adic sant Is rr Jentea Li hu vea tae angle Improve your es amt by mine hende Ine oly Fo cura salu op F le Error Te SAC pt IE rew SMC ide TCal Vit bie ent 0 20 nage 21 Tar angie erar 35 araga Pmannen SSW AASE 193 ANCAS 240 Jedier tE 30 pe sil an af bis adiup que ubjcel in PRIS ar INE tasti Mave TF bli t3 he poste shes you tink tie i fale un r pastr Cm TALEN Hil TYALUAT IK Chuck de posite Baba sd wate be Ciyla st Ur ut nh TR SIL wus UU nn nN Hpt Jad r
5. Tue adle sjapt i rex dlr side ul WT he renne ra Tae angle er ar 3 4 7 cagre s Mew abe rotik i g tte ranu a If your image is similar to the eccentric image the white and blue satellite coincide and a beep is heard This indicates that the exercise is successfully completed Qbion AB 2009 06 13 EMAL ATION The RC ser ran agrara nt ide Teal sili llie guse I 3 sie dec Ine ar 2 Tor is dd dec ees IMKE wour result ky nov 14 NE LIDE Fead 2 bie curve vue dur The ras agrara 3 Hs TIE Jenta wil TU Certs g s one Sov elerpl t tas rer 75 b If your image is not similar to the eccentric image the tube head position must be adjusted so the blue satellite coincides with the white one Note that the feedback from the fluoroscopic function in the blue framed window is coordinated with the movement of the blue satellite at the bandy ball A beep is heard when the tube head has been moved to the correct position and the exercise is completed Hint 1 Move the tube head and note the fluoroscopically displayed radiograph in the blue framed window Hint 2 Move the tube head and follow the movement of the blue satellite When the blue and white satellites coincide the tube head has reached the correct position Qbion AB 2009 06 14 Fluoroscopic imaging Brief presentation of the exercise The aim of the exercise is to acquire the skill to deduce the relative depth position of an object displa
6. in an eccentric projection Hint Grasp the back of the tube head housing and move it The task is easier to complete if the scene in pushed away from the user by means of 3D mouse so the complete tube head is visible Qbion AB 2009 06 17 Cae skarpt En Ene Je rer FS 6 Press the Proceed button to continue A blue sphere is visualised in the oral cavity Grab it with the conventional mouse and move it to the position where you think the radiopaque object is situated in relation to the teeth Hint It is easier to position the blue sphere if the patient is pulled close to the viewer 7 When you have positioned the blue sphere in the desired position push the Proceed button 8 Now the radiopaque object is visualised as a white sphere in the oral cavity You can see how close to the correct position you placed the blue sphere The distance between the spheres is presented in millimetres in the instruction and feedback window on the right monitor Qbion AB 2009 06 18 Static imaging Brief presentation of the exercise The aim of the exercise is to acquire skill in deducing the relative depth position of an object displayed in pairs of radiographs when the difference in projection angle is known This simulates the clinical situation when one observes an object in a radiograph and wants to decide the position of the object by using the parallax technique Each task starts by displayi
7. procedure the central ray is automatically aligned to the centre of the detector Expose your own image by pressing the Proceed button Hint Grasp the back of the tube head housing and move it The task is easier to complete if the scene in pushed away from the user by means of 3D mouse so the complete tube head is visible Qbion AB 2009 06 26 SAU OP Tar unnsar sadir gt apt Is rc dentine L Uw ur sur siv rv irsaye 27 1 18 angle Arr NUR Jegr as Imprive ee et At Dy ir Mirg MEL slut cwrt p sailivn cee Tae adic gt apr IE rew siti st Ide vical wed bie Avent 0 SE tye 21 Prise 6 Your image is presented in a third window blue frame A fourth window presents a read ball the bandy ball with three satellites of different colours The gray satellite represents the projection for the orthoradial image gray frame The white one represents the projection used for the eccentric image white frame and the blue represents your image blue frame 7 EVALUATION 1 re INF ra agrara S 10 3 sity the e02E7 gt Ine imac The we 2 ras ant 22 tur i 4 9 deere ee TAMA rart mer 75 a If your image is similar to the eccentric image the white and blue satellite coincide and a beep is heard This indicates that the exercise is successfully completed Press the Proceed button to continue in the exercise Qbion AB 2009 06 27 SLUAT Ik Ch
8. visualisation of the eccentric image when the tube head is moved A radiopaque object is displayed in the radiographs The position of this object in relation to the teeth is to be determined utilising parallax 1 Select Skill training in the program menu E Object locelsation Gaia qbion eZ VIRTUAL RADIOLOGY Interaction traning Skill traning Exam vwww qbion com Select area Right Left Upper Molar Premolar Canine Incisors gt Canine gt Premolar gt Mol Lower Molar Premolar Canine gt Incisors Canine Mol Select exercise Projection H Fluoroscopic analysis E imaging E L fs P P Static imaging 4 Object H i localisation i p procedure p ERE eveeseseevssseereererfersvssekudbessesevet 2 Select area to be examined Upper O Molar OPremolar O Canine Olncisor O Canine OPremolar O Molar Lower O Molar O Premolar O Canine O Incisor O Canine O Premolar O Molar gb Object localisation Guest User FLE qbion ce ART ponents ante rie Interaction traning Skill traning Exam Select area Right Left Upper Molar Premolar Canine Incisors Canine Premolar Mo Lower Molar gt Premolar Incisors Canine Select exercise Projection H Fluoroscopic H Objec t analysis imaging ii P P 3 Select localisation Object H pro cedure localisation procedure p ETTA Qbion AB 2
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10. 009 06 25 Te leste ne exter nage by Oe EIE dt 500 Me LIG put Jur yu in ae anes oar ee Aten aera Fm Ine arne pene mer Sake rzad saatan rarr mer 5 4 TASK 1 The exercise starts with the tube head aligned for an orthoradial projection of the selected area Two radiographs are presented on the right monitor The left one gray frame is the resulting orthoradial radiograph and the right image white frame is an eccentric projection over the same area exposed from a random direction Use the 3D mouse to change the position of the scene to any desired view Brief instructions are presented in the instruction and feedback window on the right monitor 5 AM Te sim uf ne user ci iby salte ll E the relat p sitan Mar lyases eee ont rac Iyapa gets PORTEN saget dress rte ts Fr RS T femur en STENE t dur Ha Tro acest me eccer nage by STAY hsm We the put Ur vou KG an re je ae Hate aR A SS EG rae RE Eg I see tempt 7 Pars mer 76 es 5 Analyse the projections in the orthoradial and eccentric images Study the anatomic details and note the difference between their depictions in the two images When you think you understand the projection in the eccentric image try to duplicate it by positioning the tube head where you think it was when the eccentric image was exposed Use the conventional mouse right button to move the tube head To facilitate the
11. QBION ORAL RADIOLOGY PACKAGE s r Ko mante TS towne lifa PL i User manual OBJECT LOCALISATION Contents BF EN NE ENN ee ae a pd 2 Ge GE RE EE reen 3 TR NNN 4 BITER LA DOE RER 5 Tube head positioning 1 W1 W1 W1 1 W W W W W W u u ssevvvevueruse pp LEDES us LE Es uses Eee see 7 LONE Le Ess eee ee ee ee ee ener ee ee een ene RE 9 L Ke SD 0 ET Coe nn renee EN ee eee ee ee ee ee eer 10 Qbion AB 2009 06 2 Object localisation Object localisation is one of four programs in Qbion Oral Radiology Package QORP The overall aim of the program is to provide an environment for skill training in the interpretation of spatial information in intraoral radiographs utilising parallax Training is accomplished by performance and analysis of radiographic examinations of a virtual patient abion ORAL RADIOLOGY PACKAGE VIRTUAL RADIOLOGY www qbion com BITE WINGS PERIAPICALS PANORAMIC OBJECT LOCALISATION Start the program by clicking at the OBJECT LOCALISATION icon The Standard edition of the program contains the two modules Interaction training and Skill training In the Extended edition a third module called Examination is added Qbion AB 2009 06 3 Interaction training The aim with the interaction training module is to acquire skills with which to navigate in and interact with the VE where the radiology skill training is performed The module is comp
12. ak le poler Boks ta vat ET Jew sbevatit7 Deskto vanu iTS b If your image is not similar to the eccentric image the tube head position must be adjusted so the blue satellite coincides with the white one Note that the feedback from the fluoroscopic function in the blue framed window is coordinated with the movement of the blue satellite of the bandy ball A beep is heard when the tube head has been moved to the correct position and the exercise is completed Press the Proceed button to continue in the exercise Hint 1 Move the tube head and note the fluoroscopically displayed radiograph in the blue framed window Hint 2 Move the tube head and follow the movement of the blue satellite When the blue and white satellites coincide the tube head has reached the correct position 8 TASK2 In the patient model you can see a blue sphere in the centre of the oral cavity Use the conventional mouse central and right button to position the blue sphere where you think the radiopaque object is situated in the patient model Hint 1 It is easier to position the blue sphere if the patient is pulled close to the viewer Qbion AB 2009 06 28 FEE AA The sinn of Une veer vand lt ill m der curs the ni Amin at ar Ck Sct gt 3pleyec In pairs 2 rec yrak 73 FTART 45 POSITION Thess serie se to be pratan ot tie are baad ane tia CEI Nez 218271 E2cSntle Ta Suyrs she seus SU rth fur Han LANs 4 Tre 7
13. aphs are visualised in real time when tube head is moved This is called fluoroscopy and is not possible in regular clinical oral radiographic examinations spherical radiopaque object is displayed in the images The goal is to determine the three dimensional position of the sphere in relation to the teeth utilising parallax Gp Object localisation Guest User 3 10 x VIRTUAL RADIOLOGY lt www qbion com x Interaction traning Skill traning Exam 1 Select Skill training in the program menu Select area Right Left Upper Molar Premolar Canine O Incisors Canine Premolar Molar Lower Molar Premolar Canine O Incisors Canine Molar Select exercise Projection H Fluoroscopic H analysis imaging i P PI Static imaging H Object H Z localisation i p procedure p 2 Select area to be examined Upper O Molar OPremolar O Canine O Incisor O Canine O Premolar O Molar Lower O Molar OPremolar O Canine O Incisor O Canine O Premolar O Molar Q b O n veg VIRTUAL RADIOLOGY vwww qbion com r Interaction traning Skill traning Exam Select area Right Left Upper Molar Premolar Canine O Incisors Canine Premolar Molar Lower Molar Premolar Canine Incisors Canine Pre Molar 3 Select Fluoroscopic Select exercise imaging Projection Fluoroscopic i analys
14. d in the patient model Hint It is easier to position the blue sphere if the patient is pulled close to the viewer Aakyat LI 400 su Dup 3 and deen IE tra Tans ter nthe n par a aar the blue EET Jes lu Tsu Fe 8 When you have positioned the blue ball in the desired position push the Proceed button Qbion AB 2009 06 22 rar weil j Preez 77 Hint TYALUAT IN Ut sek IL Polk 1 BRU U LE Er Civ et Uru 1 2 Sinn I ar am was Jor tr depth ane O31 nm sidewees Aue ul ul iF STA FE 9 Now the radiopaque object is visualised as a white sphere in the oral cavity You can see how close to the correct position you placed the blue sphere The distance between the spheres is presented in millimetres in the instruction and feedback window on the right monitor Qbion AB 2009 06 23 Object localisation procedure Brief presentation of the exercise The aim of the exercise is to acquire the skill to deduce the relative depth position of an object displayed in pairs of radiographs when the difference in projection angle is known It is an amalgamation of the previously described exercises Each task starts by displaying the scene with the patient model The detector position is pre selected by the user and the tube head is directed toward the detector for an orthoradial radiographic image Two initial radiographs are presented One is the orthoradial projection of the s
15. diopaque object is displayed in the orthoradial and eccentric images Next the user is urged to analyse the radiographic information in the two images and deduce the three dimensional position of the sphere in the jaw The bandy ball helps the user identify the direction of the central ray of both the orthoradial and eccentric projections when viewing the patient model This function is helpful in the analysis of the three dimensional position relative to the teeth as it helps the user view the teeth and the radiopaque object in the actual beam direction that was used when the radiographs were exposed Finally the user takes the blue sphere that appears in the oral cavity and places it in the correct position in the jaw When the blue sphere is positioned the simulator gives immediate feedback by visualising the correct position of the radiopaque object as a white sphere The user can analyse the performance visually and the distance error is given Qbion AB 2009 06 24 The exercise step by step Purpose To learn how to localise objects in patients using parallax This exercise combines some of the exercises above into one The simulator exposes one orthoradial and one eccentric radiographic image By analysing these images the projection of the eccentric image can be determined The first task is to duplicate the eccentric image If you do not succeed you will have a chance to correct the projection Correction is facilitated by fluoroscopic
16. e blue anc ME white sall ESTER rart mer 78 4 The exercise starts with the tube head aligned for an orthoradial projection of the selected area The resulting image is presented in a window gray frame on the right monitor radiopaque round object is visible in the radiograph The radiopaque object also exists in the patient model but is not yet visualised Use the 3D mouse to change the position of the scene to any desired view Brief instructions are presented in the instruction and feedback window on the right monitor 5 Move the tube head by using the conventional mouse right button for an eccentric projection of the area The central ray is automatically aligned to the centre of the detector in order to facilitate the procedure Hint Grasp the back of the tube head housing and move it The task is easier to complete if the scene in pushed away from the user by means of 3D mouse so the complete tube head is visible Qbion AB 2009 06 21 ve uli LFF EET Fe 6 Expose the eccentric image by pressing the Proceed button Your image is presented along with the first image Analyse the two images and try to figure out the position of the radiopaque object in relation to adjacent roots 7 In the patient model you can see a blue sphere in the centre of the oral cavity Use the conventional mouse central and right button to position the blue sphere where you think the radiopaque object is situate
17. elected area and the second is an eccentric projection over the same area The projection angle for the second image is randomly chosen by the software and a random minor change in detector position has also occurred The task is to analyse how the relative positions of anatomy details depicted in the radiographs have changed between the two radiographs The analysis requires knowledge in topographic anatomy and understanding of the parallax principles From the analysis it is possible to deduce the difference in projection angle between the two radiographs In the following step the user moves the tube head from its original position to the position it was thought to be in when the eccentric radiograph was exposed A third radiograph reflecting the actual position of the tube head will be displayed when the user has moved the tube head to the new position and made an exposure Feedback is given as angulation error and as visual comparison of the three radiographs If the angulation error is too large the user has to correct the tube head position In that case two feedback functions become available to guide the user The first function is the third radiograph which is displayed in fluoroscopic mode upon movement of the tube head The second is the red bandy ball which in a stylised way continuously indicates the central ray direction for each of the displayed radiographs When the difference in projection angle is established a spherical ra
18. is i imaging E P Pp Static imaging 4 Object H i localisation i p procedure p Qbion AB 2009 06 16 i Nowe lonpl ET Basa ner SE 4 Starting position The exercise starts with the tube head aligned for an orthoradial projection of the selected area The resulting image is presented in two identical copies on the right monitor A radiopaque round object is visible in the radiograph The radiopaque object is not yet visualised in the oral cavity The left radiograph gray frame is static The right white frame is fluoroscopically displayed Use the 3D mouse to change the position of the scene to any desired view Brief instructions are presented in the instruction and feedback window on the right monitor oeaacopic Imagina sate Toe aint of bre Zezi se is La ecye 2 sh in sleducing t 2 wz 1 fac zarak 73 bry utllisir gt fluor 3c apy 5 Move the tube head in any desired direction by using the conventional mouse right button To facilitate the procedure the central ray is automatically aligned to the centre of the detector The right radiograph white frame will continuously change in accordance with the projection changes The left gray frame will remain unaffected Analyse the two images during the movement and try to figure out the position of the radiopaque object in relation to adjacent roots When you think you know the position of the radiopaque object finish the tube head movement
19. ng the scene with the patient model The area to be examined is pre selected by the user and the tube head is directed toward the detector from an orthoradial projection An initial radiograph is rendered from the individual positions of the detector and tube head relative to the patient A round radiopaque object representing a spherical object in a random position in the jaw is displayed in the radiograph The sphere is not visualised in the oral cavity In the next step the user 1s asked to expose an eccentric radiograph The user has to decide a proper projection angle and move the tube head and expose a second radiograph Then the user is urged to analyse the radiographic information in the two images and deduce the three dimensional position of the radiopaque object in the jaw In the next step the user takes the blue sphere that appears in the oral cavity and places it in the correct position in relation to the teeth When continuing the exercise the simulator gives immediate feedback by visualising the correct position of the radiopaque object as a white sphere The user can analyse the result visually and the distance error is given Qbion AB 2009 06 19 The exercise step by step Purpose To learn how to localise objects in patients using parallax This exercise simulates a real situation In an exposed image you find an object and want to determine its position relative the teeth By exposing a second image with a projection of your
20. nment STARTING POSITION A white ball is randomly positioned in the vicinity of the teeth 4 blue ball is found in the centre of the oral cavity TASK Locate the white ball Then grasp and move the blue ball into the white beep is heard when the task is completed New attempt F7 Back to menu F9 Tube head positioning Brief presentation of the exercise The VE presents a scene with a patient model an x ray tube head and a detector in random positions for intraoral imaging The central ray is visualised as a blue line that hits the middle of the detector A white line with a different inclination crosses the blue line on the detector surface The tube head can be moved up down and sideways with the conventional mouse The central ray is fixed to the centre of the detector independent of the tube head movement The scene can be moved by the 3D mouse and the tube head is moved by the conventional mouse e The task is to move the tube head so the blue and white lines coincide sound signal indicates when the task is completed The time for completion of the task is presented in the dialogue window Hint 1 Grasp the back of the tube head housing and move it The task is easier to complete if the scene in pushed away from the user by means of 3D mouse so the complete tube head is visible Hint 2 If the central ray is extrapolated backwards it would be visible in the centre of the back of the tube head ho
21. ode upon movement of the tube head The second is the red bandy ball which in a stylised way continuously indicates the central ray direction for each of the displayed radiographs Qbion AB 2009 06 10 The exercise step by step Purpose To learn how to analyze the projection geometry The simulator exposes one orthoradial and one eccentric image By studying the images you can figure out the eccentric projection The task is to expose a similar image 1 Select Skill training in the program menu object localisation Guest User EE bion a TUAL RADIOLOGY a qbign com iw Interaction traning Skill traning Exam Select area Right Left Upper Molar Premolar Canine D Incisors Canine Premolar O Molar Lower Molar Premolar Canine D Incisors O Canine Premolar O Molar Select exercise Projection Fluoroscopic analysis i imaging i JER IR Static imaging H Object H i localisation ii lp procedure lp T Start page A a 2 Select area to be examined Upper O Molar OPremolar O Canine Olncisor O Canine OPremolar O Molar Lower O Molar O Premolar O Canine O Incisor O Canine O Premolar O Molar BS Object localisation Guest User 215 xd VIRTUAL RADIOLOGY br www ne gt qbion com Interaction traning Skill traning Exam Select area Right Left i Upper Molar Premolar Canine Incisors Canine
22. own choice as a complement to the first image you receive a pair of images from which necessary information can be extracted The simulated radiographs display a round radiopaque object the position of which is to be determined utilizing parallax 1 Select Skill training in the program menu VIRTUAL RADIOLOGY www qbion com Interaction traning Skill traning Exar Select area Right Left Upper Molar Premolar Canine gt Incisors Canine gt Premolar Molar Lower Molar Premolar amp Canine O Incisors Canine Molar Select exercise Projection Fluoroscopic analysis imaging H E E P Static imaging H Object localisation procedure H E P A at A 2 Select area to be examined Upper O Molar OPremolar O Canine Olncisor O Canine OPremolar O Molar Lower O Molar O Premolar O Canine O Incisor O Canine OPremolar O Molar Q bion P VIRTUAL RADIOLOGY www qbion com Interaction traning Skill traning Exam Select area Right Left Upper Molar Premolar Canine Incisors Canine Premolar gt Molar Lower Molar gt Premolar Canine Incisors Canine Molar Select exercise Projection H Fluoroscopic H analysis i imaging i P P i Ree Static imaging Object 2 3 Select Static Imaging i localisation i p procedure P Qbion AB 2009 06 20 FYR 2 HE Caecca position of th
23. r LEDE rel f Jey ste roti 7 E Object localisation procesais snx METE alte Tre airi of bie a st is lee ash im cledi cing t a late postc c an ObIE t dlspla 2d 4 lt al s of adloc aphs Abt ING POSS Te sdic gt apr In Image I refleccs the posme c Az tube Heras vd tic ater MANE 7 Is An Are Ye Val Qf af fn rar zar Mret TAZZ1 Ty hs spile ve te arcent UME YR oy musing F lube hes alu lt sp ssilivn yt t akt hs ohe the eczeraic maye MAE Expcsec whe K dCE ding he ill pus rudivyr ra tonn jal ans ar At he tahe hi Prees 7 if Hint PALL At Tar nasa adic sapr 18 rr dantica Li thw vezur siv sre rage 2 198 angle ar ar STR JAgr as Improve your etat byr ire te Lis hes slu H 2 vuta Ap oailivn Te Sdic gt apr IE rew SMC IDE Vical wed bie En 0 JE nage 21 Tae angle erar 3 Iragne 3 Pree SSW AASE 1 Adan maps 240 Jedier C pe sil an of bis vadiuj que ubjcel in TRISTAN 19 the 13301 Mave TF b t t the poste ehea you tink tie p 4 fale run nasmr at viraulis des a R Due Error Pees FF Hil TYALUAT IK Ch ark Je pl il ENE dd Cite urur 2 45 rm Te sn vag UU nn niepti Fad Jad rr ECAS dEr aber INF kto yanu 10 EVALUATION 2 Now the radiopaque object is visualised as a white sphere in the oral cavity You can see how close to the correct position you placed the blue sphere The distance between the sphe
24. re the white ball is situated If the ball cannot be found immediately the scene must be moved by means of the 3D mouse in order to find the white ball e When the white ball is located the blue ball shall be moved inside the white ball by means of the conventional mouse sound signal indicates when the task is completed The time for completion of the task is presented in the dialogue window Hint The task is easier to complete if the patient is moved closer to the viewer than the starting position Qbion AB 2009 06 5 The exercise step by step 1 Select Interaction training in the program menu 2 Select Object positioning ge exercise Tube head 3 Use the 3D mouse to change the view of the scene By doing this you can localise the white ball situated somewhere among the teeth 4 Use the conventional mouse right and central button to move the blue ball inside the white ball 5 When you have succeeded in placing the blue ball inside the white ball a beep is heard Short instructions and feedback are presented in the dialogue window on the right monitor Qbion AB 2009 06 6 Interaction traning Skill traning Exam Object positioning H positioning i P pel meal my SE grmnnoneneeeasenennenenenensnnenenenseseen tS Object positioning x ioj gt Alil The aim of the exercise is to acquire skill in navigation and interaction with the virtual enviro
25. res is presented in millimetres in the instruction and feedback window on the right monitor Qbion AB 2009 06 30 Examination The Examination module is designed to automatically and objectively evaluate the user s knowledge and understanding of the object localisation procedure The module is under construction Qbion AB 2009 06 31
26. rised of two separate exercises which are designed for the acquisition of interaction skills necessary for successful performance of the exercises in the skill training module Two exercises are available Object positioning and Tube head positioning It is highly recommended that the exercises in the interaction training module be performed before entering the skill training module Repeat the exercises as many times as is needed until you can easily control the tools for navigation and interaction Ip Object localisation Guest User q b Ol z VIRTUAL RADIOLOGY www qbion com Interaction traning Skill traning Exam Select exercise Object H Tube head positioning positioning i P P _ Start page 1 The effect of skill training will be jeopardised if interaction training is neglected Qbion AB 2009 06 4 Object positioning Brief presentation of the exercise The VE presents a scene with a patient model a small white and a small blue ball The white ball is situated in a random position in the vicinity of the dental arches Occasionally it can be partly or totally situated inside a tooth If it is impossible to find the white ball it probably is situated inside a tooth if so restart the exercise The blue ball is positioned centrally in the mouth of the patient model and can be moved by means of the conventional mouse White ball A e The task is first to discover whe
27. the user and the tube head is directed toward the detector for an orthoradial projection A radiograph rendered from the individual positions of the detector and tube head relative to the patient is displayed In the next step an eccentric radiograph over the same area is displayed The projection angle for the eccentric image is randomly chosen by the software However the new position of the tube head and detector which also has moved a little is not visualised in the scene The task 1s now to analyse how the relative positions of anatomy details depicted in the radiographs have changed between the two radiographs The analysis requires knowledge in topographic anatomy and understanding of the parallax principles From the analysis it is possible to deduce the difference in projection between the two radiographic images In the following step the user moves the tube head from the original position to the position from which the eccentric radiograph was exposed A third radiograph reflecting the actual position of the tube head will be displayed when the user has moved the tube head to the new position and made an exposure Feedback is given as angulation error and as visual comparison of the three radiographs If the angulation error is too large the user has to correct the tube head position In that case two feedback functions are available to guide the user The first function is the third radiograph which is displayed in fluoroscopic m
28. using When the white line crosses the middle of the tube head housing it would coincide with the central ray Qbion AB 2009 06 7 The exercise step by step 1 Select Interaction training in the program menu Select Tube head positioning Use the 3D mouse to change the view of the scene so that you can see the relation between the blue central ray from the x ray tube head and the white line from different directions Use the conventional mouse right button to position the x ray tube head so the blue central ray coincides with the white line the white line penetrates the centre of the back wall of the tube head housing When the blue central ray coincides with the white line a beep is heard indicating a successful attempt Short instructions and feedback are presented in the dialogue window on the right monitor Qbion AB 2009 06 8 Interaction traning Skill traning Exam Sete xercise Object positioning gele nen Tube head positioning GD Tube head positioning Alb 10 x The aim of the exercise is to acquire skill in navigation and interaction with the virtual environment STARTING POSITION A white line is randomly directed from the centre of the detector blue line emerging from the focal spot the central ray is directed to the centre of the detector TASK Grasp and move the tube head so the blue line coincides with the white Ne
29. w attempt F7 Back to menu F9 Skill training The aim of the skill training module is to acquire the skills to interpret spatial relations in pairs of radiographs utilising parallax a shorter expression is Object localisation There are four exercises available focusing on of the procedure different aspects exercises are e Projection analysis Fluoroscopic imaging Static imaging Object localisation procedure Thorough investigation of the content in each exercise is recommended There are no restrictions concerning training order Qbion AB 2009 06 The TA Object localisation Guest User loj x VIRTUAL RADIOLOGY Sa www qbion com Interaction traning Skill traning Exam Select area Right Left Upper Molar Premolar gt Canine Incisors gt Canine gt Premolar lt Molar Lower Molar gt Premolar Canine Incisors gt Canine Premolar gt Molar Select exercise Projection Fluoroscopic analysis L imaging i F F Static imaging H Object H i localisation i P procedure p Start page 7 Projection analysis Brief presentation of the exercise The aim of the exercise is to acquire the skill to deduce change in projection angle by analysis of the relative position of anatomy details visible in the radiographs Each task starts by displaying the scene with the patient model The detector position is pre selected by
30. yed in pairs of radiographs when the difference in projection angle is known Each task starts with a display of the scene with the patient model The detector position is pre selected by the user and the tube head is directed toward the detector for an orthoradial projection Two identical radiographs rendered from the individual positions of the detector and tube head relative to the patient display an artificial round radiopaque object situated in a random position in the jaw The object is not visualised in the scene One of the radiographs is displayed in fluoroscopic mode When the tube head is moved the fluoroscopic image is continuously updated It is therefore possible to follow the change in relative position between object details in real time and compare them with the initial image The user is urged to move the tube head and analyse the radiographic information and deduce the three dimensional position of the sphere in the jaw In the next step the user takes the blue sphere that appears in the oral cavity and places it in the correct position in the jaw When the blue sphere is positioned the simulator immediately provides feedback by visualising the correct position of the radiopaque object as a white sphere The user can analyse the performance visually and the distance error is given Qbion AB 2009 06 15 The exercise step by step Purpose To learn how to localise objects in patients using parallax In this exercise radiogr
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