TY - JOUR
T1 - Real-time imaging and triggering of 3D contrast-enhanced MR angiograms using MR fluoroscopy
AU - Riederer, Stephen J.
AU - Fain, Sean B.
AU - Kruger, David G.
AU - Busse, Reed F.
N1 - Funding Information:
We acknowledge the support of the Body and Neuro MRI Sections at Mayo Clinic and the contributions of Dr Josef Debbins, Roger Grimm, Thomas Hulshizer, Phillip Rossman, and Dr Alan Wilman. This work was supported in part by NIH Grants CA37993 and HL37310 and by General Electric Medical Systems.
PY - 1999/8
Y1 - 1999/8
N2 - Although a variety of timing techniques and data acquisition strategies have been used for three-dimensional contrast-enhanced MR angiography, many are still limited by inadequate overall reliability, limited spatial resolution, or complexity. A technique is presented in this work in which contrast arrival is detected in the targeted vasculature in real time using MR fluoroscopy. Upon detection the operator triggers a 3D MR angiographic acquisition which uses an elliptical centric view order. It is shown that the view order intrinsically provides a high degree of venous suppression which in turn allows acquisition times of 30 s or longer, permitting high spatial resolution. The reliability of fluoroscopic triggering in bolus detection is shown to be over 90%. The technique provides high quality contrast-enhanced MR angiograms for many vascular regions.
AB - Although a variety of timing techniques and data acquisition strategies have been used for three-dimensional contrast-enhanced MR angiography, many are still limited by inadequate overall reliability, limited spatial resolution, or complexity. A technique is presented in this work in which contrast arrival is detected in the targeted vasculature in real time using MR fluoroscopy. Upon detection the operator triggers a 3D MR angiographic acquisition which uses an elliptical centric view order. It is shown that the view order intrinsically provides a high degree of venous suppression which in turn allows acquisition times of 30 s or longer, permitting high spatial resolution. The reliability of fluoroscopic triggering in bolus detection is shown to be over 90%. The technique provides high quality contrast-enhanced MR angiograms for many vascular regions.
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U2 - 10.1016/S1352-8661(99)00032-0
DO - 10.1016/S1352-8661(99)00032-0
M3 - Article
C2 - 10504048
AN - SCOPUS:0032869963
SN - 0968-5243
VL - 8
SP - 196
EP - 206
JO - Magnetic Resonance Materials in Physics, Biology, and Medicine
JF - Magnetic Resonance Materials in Physics, Biology, and Medicine
IS - 3
ER -