QFlow v5.6 Quick Start Manual - Medis medical imaging systems
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1. in the toolbar 3 Click lo 4 Inthe Phase or Modulus View click to select the center point of the vessel you want to analyze 5 Verify that the contour is correct Y The maximum velocity pixel within the contour in this phase is marked by an orange square the minimum velocity pixel is marked by a blue square To create a new contour you can place the center point again To draw or edit the contour click A or and trace the contour in the Modulus or Di E Phase View or click and drag the contour 6 If you want to analyze a second third or fourth vessel in the same series click e e or O in the toolbar and repeat steps 3 through 5 for each vessel 7 Click to automatically detect all contours Some series require customized contour detection For a detailed description of when best to use which type of contour detection refer to the QFlow User Manual 8 Check if all contours have been detected correctly Make sure to edit contours if needed Quick Tour To apply background correction using the ROI4 area method If needed you can apply background correction The ROI4 area method is one of three methods for background correction that are available E Refer to the QFlow User Manual for instructions on performing background correction using one of the other methods 1 Select Settings gt Main or click 2 On the Background subtraction tab from the Subtract background flow drop down2. March 10 2014 QFlow 5 6 Quick Start Manual 9 07 250 56 2 v1c0 Medis medical imaging systems bv Schuttersveld 9 2316 XG Leiden the Netherlands http www medis nl Medis medical imaging systems bv Medis medical imaging systems Inc Schuttersveld 9 9360 Falls of Neuse Road Suite 103 2316 XG Leiden Raleigh NC 27615 2484 P O Box 384 USA 2300 AJ Leiden the Netherlands Telephone 31 71 522 32 44 Telephone 1 919 278 7888 Fax 31 71 521 56 17 Fax 1 919 847 8817 E mail supportemedis nl E mail supportemedis nl Web www medis nl Web www medis nl Legal Notices Copyright Notice O 2010 2014 Medis medical imaging systems bv All rights reserved This manual is copyrighted and is protected by worldwide copyright laws and treaty provisions No part of this manual may be copied reproduced modified published or distributed in any form or by any means for any purpose without prior written permission of Medis medical imaging systems bv Permission is granted to freely print unmodified copies of this document as a whole provided that copies are not made or distributed for profit or commercial advantage Trademark Acknowledgments QFlow is a registered trademark of Medis Associated BV in the United States and in other countries All other brand product and company names mentioned in this document are trademarks or registered trademarks of their respective owners Regulatory Information Intended Use
3. American Regulations QFlow has been cleared for market in the United States by the FDA Food and Drug Administration under the provisions of Section 510 k of the Food Drug and Cosmetic Act QFlow complies with the requirements of the Canadian Medical Devices Regulations and has been licensed as a Class Il medical device QFlow 5 6 Quick Start Manual HI Conventions Used The following conventions are used throughout this manual to indicate mouse and keyboard actions and to refer to elements in the user interface Mouse Click Press and release the primary mouse button If you are left handed you may have set the right mouse button as your primary mouse button Right click Press and release the secondary mouse button If you are left handed you may have set the left mouse button as your secondary mouse button Middle click Press and release the wheel button or the middle mouse button If you have a two button mouse press and release the left and the right mouse button simultaneously Double click Press and release the primary mouse button twice Keyboard SHIFT click Press and hold down the SHIFT key on your keyboard while you click a button or object CTRL O Press and hold down the CTRL key on your keyboard while you press O then release both keys This example opens the dialog window for opening a study Typographical Conventions On the Display tab clear the Names of buttons fields menus menu options and t
4. list select ROI 4 area and close the settings dialog 3 In the toolbar select 4 and then select or 4 Inthe Phase or Modulus View trace a contour in an area where you expect no flow Make sure that you do so as close to the vessel as possible 5 Press CTRL C and then CTRL SHIFT V This copies the contour to the other images 6 Check the area in all images to verify that it does not cover areas where flow is to be expected Edit the contours if necessary Y You can move a contour as follows Select its ROI icon in the toolbar then press CTRL and use the left mouse button to move the contour 7 Any results that you now view are corrected for background flow To view analysis results 1 Click press F7 or select View gt Graph This displays the Mean Velocity diagram 2 Select the diagram of your choice from the Show drop down list If you want to check the background correction curve click To save an analysis 1 Click or select File gt Save 2 Inthe dialog window select the directory in which you want to save the analysis contours then select CON or DCM as the file type from the Save as type drop down list Quick Tour 3 Click Save QFlow 5 6 Quick Start Manual Quick Tour Creating Reports Reports contain a summary of patient and study information and a number of analysis results You can create graphic reports save as HTML PDF or as DICOM SC plain text reports save as TXT
5. or as DICOM SC or XML reports Graphic reports may contain images movie frames movies and result diagrams To create and save a report 1 Click or press F9 2 From the Report Layout drop down list you can select another type of report This immediately creates the new report 3 To create a text or XML report click Plain text or XML If you are creating a text report you can select the results you are interested in by selecting the corresponding check boxes under Contents 4 Click Save at the bottom of the Report window More Information This Quick Start Manual outlines the basics of working with QFlow You can find more details and more instructions for example on performing transvalvular analyses and on performing more types of background correction in the QFlow User Manual On the QFlow installation CD ROM you can also find the QFlow Installation Manual Release Notes Reference Manual DICOM Conformance Statement and Declaration of Conformity To access the QFlow User Manual e In QFlow press F1 To access all QFlow documentation 1 Look up the QFlow installation directory in your file system 2 You can find the QFlow documentation set in the Documents directory Or 1 Insert the QFlow CD ROM 2 In Windows Explorer browse the directory structure of the CD ROM The documentation is located in the Documents directory
6. QFlow has been developed for the objective and reproducible analysis of velocity encoded cine MR imaging studies of arterial vessels and heart valves The intended purposes are e Supporting clinical diagnoses with data on the function of the cardiac ventricles e Supporting clinical diagnoses with data on the flow velocity and flow volume through cardiac and peripheral vessels both under basal and increased flow conditions e Supporting subsequent clinical decision making processes GENERAL WARNINGS Be You are explicitly recommended to measure flow parameters only in sequences that are validated for flow measurements Reliable measurement results can only be obtained with validated acquisitions E QFlow must be used by cardiologists radiologists or trained technicians who are qualified to perform cardiac analyses If the analysis results are used to reach a diagnosis the results must be interpreted by a qualified medical professional In clinical practice QFlow should not be used for purposes other than those indicated in the section Intended Use C Users must make sure to read this manual to familiarize themselves with the software and be able to obtain reliable analysis results European Regulations QFlow is qualified as a class lla medical device It complies with the requirements of the Dutch Medical Devices Decree Besluit Medische Hulpmiddelen Stb 243 1995 and the European Medical Device Directive 93 42 EEC North
7. ab names Show patient data check box are capitalized and in bold View gt Movie A sequence of menu options that you select to perform a specific task is indicated by angular brackets Contours can be saved ina con Text that you type or that appears on the screen such as file file names and file locations is displayed in Courier New Symbols Used Py Ki e Reference Points to related documentation or to related sections in the document that may be relevant in your situation Tip Provides helpful information or an alternative working method Note Brings additional information to your attention Caution Tells you to be careful when performing a task Warning Warns you for a potentially dangerous situation in the image representation or analysis which may lead to incorrect results You are advised to follow the instructions to avoid this QFlow 5 6 Quick Start Manual Table of Contents PEGAL NOTICES una A 0N KEKE E02 Q0 E 220220500 ya En E BRWA II acesoheontenws VI INTRODUCTION oscila 1 ABOUCORL OW cos ia a 1 Til QELOW WOTKS DACE nda rastas 1 QUICK TOUR r anat 2 Starting QFlow and Reviewing Studies crono eee eee eee eee eee eeeeeeeeeeeeeee se 2 Performing Vascular Flow Analyses ee 4 CEE REDO e DD DK Kn n rrr 7 NOREINEORNMAIGN 8 Introduction About QF low QFlow is the Medis software solution for the quantitative analysis of velocity encoded MR studies Its automatic contour detect
8. ectory in which the studies are located 2 Inthe top right pane of the dialog window select the study and click OK To browse the images e Use the arrow keys on your keyboard to browse the images in the Modulus View and Phase View To select an image e Click an image in the Thumbnail View to select it This displays the image in the Phase and Modulus Views To zoom in or out e Inthe toolbar click Quick Tour Or e Press or To pan e Press the middle mouse button or mouse wheel hold it down and drag This pans the image To return to editing mode release the middle mouse button or mouse wheel To adjust window width and level e Inthe Phase View or Modulus View hold down the middle mouse button or mouse wheel and drag To view the series in the Movie window e Click H in the toolbar or press F5 To switch between phase and modulus images in the Thumbnail View e Select View gt Modulus Images or View gt Phase Images QFlow 5 6 Quick Start Manual Quick Tour Performing Vascular Flow Analyses Now that we have reviewed the series we are going to perform a vascular flow analysis using the automatic contour detection E If you want to perform a transvalvular flow analysis you have to create contours manually For detailed instructions refer to the QFlow User Manual To perform a vascular flow analysis 1 Select the image that shows most contrast between the vessel and the background 2 Click
9. ion enables you to quantify arterial and transvalvular blood flow quickly and accurately E QFlow must be used by qualified medical personnel or trained technicians If the analysis results are used to reach a diagnosis the results must be interpreted by a qualified medical professional QFlow should not be used for purposes other than those indicated in the section Intended Use The QFlow Workspace The QFlow workspace consists of a menu bar a set of toolbars and three views a Glee t1 aA _ y PEM RAMBO cos N P PHASE VIEW l ws MODULUS VIEW B THUMBNAIL VIEW C a pe oe Quick Tour In this quick tour you will get to know QFlow s key features and basic workflow You will open a study review it perform a vascular flow analysis view analysis results apply background correction save the analysis create a report and save the report Starting QF low and Reviewing Studies QFlow is usually installed by Medis support personnel or by your system administrator If you need installation instructions refer to the QFlow Installation Manual on the installation CD ROM O QFlow requires both phase and modulus series To start QFlow e Double click the QFlow icon on the desktop Or e Select Start gt All Programs gt Medis QFlow gt QFlow 5 6 To open a study 1 Click or select File gt Open Study In the dialog window browse the directory structure and select the dir
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