Key result
Ex vivo heart experiments demonstrated that dark rim artifacts in dynamic contrast-enhanced MR perfusion studies can be caused by resolution effects alone.
The dark rim artifact seen in dynamic contrast-enhanced MRI myocardial perfusion studies can be explained by resolution effects alone, independent of motion or susceptibility effects.
May reduce attribution of dark rim artifacts to motion or susceptibility; leaves open in vivo human confirmation.
A dark band or rim along parts of the subendocardial border of the left ventricle (LV) and the myocardium has been noticed in some dynamic contrast-enhanced MR perfusion studies. The artifact is thought to be due to susceptibility effects from the gadolinium bolus, motion, or resolution, or a combination of these. Here motionless ex vivo hearts in which the cavity was filled with gadolinium are used to show that dark rim artifacts can be consistent with resolution effects alone.
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Bella et al. (2005) studied Dark rim artifact in dynamic contrast-enhanced MRI. Gadolinium was evaluated on Presence of dark rim artifacts. Ex vivo heart experiments demonstrated that dark rim artifacts in dynamic contrast-enhanced MR perfusion studies can be caused by resolution effects alone.
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