Aortic ghost artifact in ultrashort TE multislice gradient echo MR images is not increased by paramagnetic enhancement.
Pulsation artifact on gradient echo images with ultrashort TE (i.e., < 3 msec) and intermediate TR is primarily from view-to-view amplitude modulation. Paramagnetic contrast agents increase the signal from blood during diastole without increasing the intensity of unsaturated systolic blood, decreasing signal modulation between systole and diastole. In a phantom and in humans, artifact decreased or remained the same following contrast enhancement.
Mitchell
D G
DG
Department of Radiology, Thomas Jefferson University Hospital, Philadelphia, Pennsylvania.
Ortega
H
H
Mohamed
F
F
Tascyian
T
T
Vinitski
S
S
D001012:Aorta, Abdominal; D016477:Artifacts; D003287:Contrast Media; D004338:Drug Combinations; D005682:Gadolinium; D019786:Gadolinium DTPA; D006801:Humans; D008099:Liver / Q000473:pathology*; D008107:Liver Diseases / Q000175:diagnosis*; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008536:Meglumine; D008955:Models, Cardiovascular; D008961:Models, Structural; D009942:Organometallic Compounds; D004369:Pentetic Acid; D011673:Pulsatile Flow / Q000502:physiology; D013997:Time Factors
D003287:Contrast Media; D004338:Drug Combinations; D009942:Organometallic Compounds; D008536:Meglumine; D004369:Pentetic Acid; D005682:Gadolinium; D019786:Gadolinium DTPA