Comparison of 3D Free-Breathing Coronary MR Angiography and 64-MDCT Angiography for Detection of Coronary Stenosis in Patients with High Calcium Scores
Xin Liu1,
Xihai Zhao2,
Jie Huang3,
Christopher J. Francois1,
David Tuite1,
Xiaoming Bi4,
Debiao Li1,5 and
James C. Carr1
1 Department of Radiology, Northwestern University, 448 E Ontario St., Ste. 700,
Chicago, IL 60611.
2 Department of Radiology, PLA General Hospital, Beijing 100853, China.
3 Department of Preventive Medicine, Northwestern University, Chicago, IL.
4 Siemens Medical Solutions, Chicago, IL.
5 Department of Biomedical Engineering, Northwestern University, Chicago,
IL.
View larger version (77K):
[in this window]
[in a new window]
[as a PowerPoint slide]
|
Fig. 1A —77-year-old man with stable angina. Diffuse calcification
(arrow and arrowheads) was detected in right coronary artery
(RCA) on MDCT angiography maximum-intensity-projection (MIP) image. AO =
aorta.
|
|
View larger version (166K):
[in this window]
[in a new window]
[as a PowerPoint slide]
|
Fig. 1B —77-year-old man with stable angina. MR angiography MIP image
(B) shows moderate stenosis (arrow, B) and conventional
coronary angiography image (C) confirms moderate stenosis
(arrow, C) in corresponding segment where heavy diffuse
calcification can be seen in A (arrow in A). B
and C show no significant stenosis (arrowheads) in
corresponding segments where nodal calcifications are located in A.
|
|
View larger version (152K):
[in this window]
[in a new window]
[as a PowerPoint slide]
|
Fig. 1C —77-year-old man with stable angina. MR angiography MIP image
(B) shows moderate stenosis (arrow, B) and conventional
coronary angiography image (C) confirms moderate stenosis
(arrow, C) in corresponding segment where heavy diffuse
calcification can be seen in A (arrow in A). B
and C show no significant stenosis (arrowheads) in
corresponding segments where nodal calcifications are located in A.
|
|
View larger version (130K):
[in this window]
[in a new window]
[as a PowerPoint slide]
|
Fig. 2A —60-year-old woman with stable angina. Calcification in left
main (LM) artery (arrowhead) and mixed plaque in proximal left
anterior descending (LAD) artery (arrow) are visible on MDCT
angiography maximum-intensity-projection (MIP) image. Cross-sectional image
shown as inset in top left corner shows noncalcified components
(arrow and arrowhead, inset) within plaque. AO = aorta.
|
|
View larger version (135K):
[in this window]
[in a new window]
[as a PowerPoint slide]
|
Fig. 2C —60-year-old woman with stable angina. MRA findings shown in
B are consistent with findings on conventional coronary angiography
image (C): Arrow points to significant stenosis in proximal LAD artery
and arrowhead points to normal LM artery.
|
|
View larger version (113K):
[in this window]
[in a new window]
[as a PowerPoint slide]
|
Fig. 3A —68-year-old woman with unstable angina. Two mixed plaques
(arrowheads) and calcification (arrow) in left anterior
descending (LAD) artery are visible on MDCT angiography
maximum-intensity-projection (MIP) image. AO = aorta.
|
|
View larger version (123K):
[in this window]
[in a new window]
[as a PowerPoint slide]
|
Fig. 3B —68-year-old woman with unstable angina. MR angiography MIP
image shows significant stenoses (arrowheads) at sites of two mixed
plaques shown in A and mild stenosis (arrow) at site of
calcification shown in A. AO = aorta.
|
|
View larger version (92K):
[in this window]
[in a new window]
[as a PowerPoint slide]
|
Fig. 3C —68-year-old woman with unstable angina. Conventional coronary
angiography image shows severe stenosis in proximal (left arrowhead)
and distal (arrow) plaques but does not show significant stenosis in
middle plaque (right arrowhead).
|
|
CiteULike 
Complore 
Connotea 
Del.icio.us 
Digg 
Reddit 
Technorati What's this?
Copyright © 2007 by the American Roentgen Ray Society.
