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Updated: Oct 2, 2026
Magnetic Resonance Derived Myocardial Strain Assessment Using Feature Tracking
Published on: February 13, 2011
Precision of myocardial contour estimation from tagged MR images with a "black-blood" technique
P Croisille1, M A Guttman, E Atalar
1Department of Radiology, Hopital Cardiovasculaire et Pneumologique Louis Pradel, Lyon, France.
Rationale And Objectives:
The authors determined whether blood presaturation of tagged magnetic resonance (MR) images affects identification of left ventricular endocardial borders.
Materials And Methods:
Three healthy volunteers underwent MR imaging performed with a breath-hold segmented spoiled gradient-recalled-echo sequence with tissue tagging. Two saturation pulses (in the basal and apical regions) were used to generate black-blood images. Manual segmentation of endocardial contours on black-blood and white-blood images was performed independently by five observers.
Results:
Endocardial borders were better identified on black-blood images compared with white-blood images, especially in the early systolic phases. Interobserver variability in contour estimation was significantly higher for white-blood images (P < .001) and was twice that for corresponding black-blood images during early systole. Contour variability appeared to be affected mainly by tag-to-myocardium contrast (P = .009) and myocardium-to-chamber contrast (P = .05).
Conclusion:
Blood presaturation of tagged MR images improves reliability of contour segmentation.
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