On the dark rim artifact in dynamic contrast-enhanced MRI myocardial perfusion studies.
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.
Di Bella
E V R
EV
Department of Radiology, University of Utah, Salt Lake City, Utah 84108, USA. Ed@ucair.med.utah.edu
Parker
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DL
Sinusas
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AJ
D000465:Algorithms; D000818:Animals; D016477:Artifacts; D003287:Contrast Media; D004285:Dogs; D019786:Gadolinium DTPA; D007089:Image Enhancement / Q000379:methods*; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D066298:In Vitro Techniques; D008279:Magnetic Resonance Imaging / Q000379:methods*; D009206:Myocardium / Q000166:cytology*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity
D003287:Contrast Media; C064925:gadodiamide; D019786:Gadolinium DTPA