- Meeting abstract
- Open Access
1015 Quantitative assessment of the dark rim artifact in first pass perfusion images: effect of stress and rest
© Hazel et al; licensee BioMed Central Ltd. 2008
- Published: 22 October 2008
- Contrast Agent
- Myocardial Perfusion
- Signal Loss
- Myocardial Perfusion Image
- Saturation Recovery
The dark rim artifact (DRA) presents a significant challenge to the quantification of myocardial perfusion from cardiac MR images for the detection of ischemic heart disease. The DRA manifests as a rim of dark pixels at the boundary between the myocardium and blood. This signal loss in the endocardium impacts negatively on the measurement of the signal time course which is integral to perfusion model estimation. The occurrence of the DRA has been reported in contrast agent (CA) enhanced single shot TrueFISP (TFI) and TurboFLASH (TFL) first pass perfusion images, but its origin is poorly understood. The artifact may be caused by a combination of factors one of which is the chemical shift susceptibility from high CA concentration. To further analyze the DRA, it's important to quantify the severity and duration of the artifact. This report is a quantitative description of the occurrence of the DRA in Gadolinium enhanced CMR images.
Mean, standard deviation, minimum and maximum measurements taken from the intensity profile across the myocardium.
Rest No. of artifact images
Stress No. of artifact images
Rest Frequency, % of total images
Stress Frequency, % of total images
Rest Severity, % signal loss Rest per image
Stress Severity, % signal loss Stress per image
Rest Maximum Severity, % signal loss
Stress Maximum Severity, % signal loss
This article is published under license to BioMed Central Ltd.