goethe cvi sop global longitudinal strain with medis...2019/01/30 · sop global longitudinal...
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![Page 1: Goethe CVI SOP Global Longitudinal Strain with MEDIS...2019/01/30 · SOP Global Longitudinal Strain with MEDIS Version 2.1 20190130 approved by: Eike Nagel • In the study repository,](https://reader036.vdocuments.mx/reader036/viewer/2022071419/6117e91f36d7d662703943d1/html5/thumbnails/1.jpg)
Institute for Experimental and TranslationalCardio Vascular ImagingUniversity Hospital Frankfurt
Goethe CVI
SOP Global Longitudinal Strain with MEDIS Version 2.1 20190130 approved by: Eike Nagel
![Page 2: Goethe CVI SOP Global Longitudinal Strain with MEDIS...2019/01/30 · SOP Global Longitudinal Strain with MEDIS Version 2.1 20190130 approved by: Eike Nagel • In the study repository,](https://reader036.vdocuments.mx/reader036/viewer/2022071419/6117e91f36d7d662703943d1/html5/thumbnails/2.jpg)
• In the study repository, select required images and load into Viewer (right click: load)
• 3 LAX stacks • CINE_segemented_2CH • CINE_segemented_3CH • CINE_segmented_4CH
• From Viewer open Qmass (right click: Qmass)
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Contours for LAX ¢ Requirements
l End-diastolic endocardial contour l End-systolic endocardial contour
¢ Method l Click on one of the tabs or the first image of
the phase displayed at the bottom of either 2/3/4 CH view to open it in the large editing window
l Enlarge the 3 CH view in one of the smaller windows in the right corner using the slider in order to determine ED and ES correctly based on ventricular size and valve opening / closure
• End-diastolic mostly first or second image, ventricle is largest, mitral valve is closed
• End-systolic image: first image with closed aortic valve / smallest volume
l Choose 3-point drawing tool • Delineate mitral valve (septal insertion point or the
end of the muscular (thick) part of the septum • Mark apex
3 point drawing
tool
Rubberband function for correction (or use
right mouse)
3-point drawing tool is only available in
“function long axis”
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Starting Qstrain
¢ Click on the strain button in the upper panel to load everything into the Qstrain app
Qstrain
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Strain Tool (GLS)
Not
nee
ded
for G
LS
¢ Load 2/3/4 CH view in the corresponding boxes by clicking
¢ Move through the list by middle mouse button
¢ To start the tracking process click on the arrow in the right lower corner
Sta
rt tra
ckin
g
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Results
¢ Check the tracking results with the video on the left side, to see tracking in all views click on the images in the right lower corner
¢ To see the tracking graphs for each segment click on the graph button (time to peak analysis) in the right panel
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Click here to get to the time to peak analysis page
Change between LAX and SAX Make sure ED ES are correct
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Quality control
• Contours should be readjusted in Qmass and the tracking algorithm should be reapplied if tracking was inaccurate. Check for mitral insertion point and apex.
• Important phases are end-diastole and end-systole only • Cases should be excluded, if
• the images contain significant artefacts • the scans do not allow reliable tracking after 3 attempts
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Test Cases for Internal Quality Control
T1_code condition gls_4ch gls_3ch gls_2ch gls gcs_b gcs_m gcs_a gcs
T1_CMR0178 DCM 0 0
T1_CMR0015 DCM 0 0
T1_CMR0096 DCM 0 0
T1_CMR0004 HV 0 0
T1_CMR0005 HV 0 0
T1_CMR0009 HV 0 0
T1_CMR0036 ISC 0 0
T1_CMR0057 ISC 0 0
T1_CMR0086 ISC 0 0
T1_CMR0097 ISC 0 0
0
Institute for Experimental and TranslationalCardio Vascular ImagingUniversity Hospital Frankfurt
Goethe CVI