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High-Spatial-Resolution Contrast-Enhanced MR Angiography of Abdominal Arteries with Parallel Acquisition at 3.0 T: Initial Experience in 32 Patients

Kambiz Nael1, Roya Saleh1, Margaret Lee1, Thomas McNamara1, Sergio R. Godinez1, Gerhard Laub2, J. Paul Finn1 and Stefan G. Ruehm1

1 Department of Radiology, David Geffen School of Medicine, University of California, Los Angeles, 10945 Le Conte Ave., Ste. 3371, Los Angeles, CA 90095.
2 Siemens Medical Solutions, Los Angeles, CA.


Figure 1
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  		Fig. 1A —73-year-old man with uncontrolled hypertension. Coronal maximum-intensity-projection (MIP) image from contrast-enhanced MR angiography (CE-MRA) shows diffuse atherosclerosis of abdominal aorta with mild stenosis of infrarenal part and proximal right common iliac artery. There is also mild stenosis of origin of right hepatic artery from superior mesenteric artery (arrow).

 

Figure 2
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  		Fig. 1B —73-year-old man with uncontrolled hypertension. MIP image from CE-MRA obtained with focus on renal arteries shows occlusion of right renal artery (solid arrow) and mild stenosis of proximal left renal artery (open arrow).

 

Figure 3
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  		Fig. 1C —73-year-old man with uncontrolled hypertension. Conventional angiogram confirms findings (arrows) described in A and B.

 

Figure 4
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  		Fig. 2A —60-year-old woman with history of abdominal angina. Sagittal thin maximum-intensity-projection (MIP) image (20 mm) from contrast-enhanced MR angiography (CE-MRA) shows severe stenosis of celiac trunk (arrow).

 

Figure 5
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  		Fig. 2B —60-year-old woman with history of abdominal angina. Coronal thin MIP (20 mm) from CE-MRA also shows severe stenosis at origin of inferior mesenteric artery (arrow).

 

Figure 6
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  		Fig. 2C —60-year-old woman with history of abdominal angina. Conventional angiograms confirm findings (arrows) described in A and B.

 

Figure 7
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  		Fig. 2D —60-year-old woman with history of abdominal angina. Conventional angiograms confirm findings (arrows) described in A and B.

 

Figure 8
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  		Fig. 3A —52-year-old woman with uncontrolled hypertension. Coronal oblique thin maximum-intensity-projection (MIP) (20 mm) (A) and volume-rendered (B) and axial thin MIP (20 mm) (C) images from contrast-enhanced MR angiography (CE-MRA) show there is right renal artery aneurysm with wide neck that extends to first bifurcation of vessels and bilobed left renal artery aneurysm just before bifurcation.

 

Figure 9
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  		Fig. 3B —52-year-old woman with uncontrolled hypertension. Coronal oblique thin maximum-intensity-projection (MIP) (20 mm) (A) and volume-rendered (B) and axial thin MIP (20 mm) (C) images from contrast-enhanced MR angiography (CE-MRA) show there is right renal artery aneurysm with wide neck that extends to first bifurcation of vessels and bilobed left renal artery aneurysm just before bifurcation.

 

Figure 10
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  		Fig. 3C —52-year-old woman with uncontrolled hypertension. Coronal oblique thin maximum-intensity-projection (MIP) (20 mm) (A) and volume-rendered (B) and axial thin MIP (20 mm) (C) images from contrast-enhanced MR angiography (CE-MRA) show there is right renal artery aneurysm with wide neck that extends to first bifurcation of vessels and bilobed left renal artery aneurysm just before bifurcation.

 

Figure 11
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  		Fig. 4A —47-year-old man with loud abdominal bruit. Coronal (A) and sagittal oblique (B) volume-rendered images from contrast-enhanced MR angiography show enlargement of celiac vessels and large fusiform aneurysm of gastroduodenal artery.

 

Figure 12
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  		Fig. 4B —47-year-old man with loud abdominal bruit. Coronal (A) and sagittal oblique (B) volume-rendered images from contrast-enhanced MR angiography show enlargement of celiac vessels and large fusiform aneurysm of gastroduodenal artery.

 

Figure 13
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  		Fig. 5A —52-year-old woman with uncontrolled hypertension. Coronal oblique thin maximum-intensity-projection (20 mm) (A) and volume-rendered (B) images from contrast-enhanced MR angiography show beaded irregularity involving mid right renal artery (arrows) consistent with fibromuscular dysplasia. There is no evidence of stenoses at origins of renal arteries.

 

Figure 14
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  		Fig. 5B —52-year-old woman with uncontrolled hypertension. Coronal oblique thin maximum-intensity-projection (20 mm) (A) and volume-rendered (B) images from contrast-enhanced MR angiography show beaded irregularity involving mid right renal artery (arrows) consistent with fibromuscular dysplasia. There is no evidence of stenoses at origins of renal arteries.

 

Figure 15
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  		Fig. 6A —60-year-old woman with uncontrolled hypertension. Coronal oblique volume-rendered projection from contrast-enhanced MR angiography shows beaded irregularity involving distal left renal artery (arrows) consistent with fibromuscular dysplasia.

 

Figure 16
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  		Fig. 6B —60-year-old woman with uncontrolled hypertension. Conventional angiogram confirms finding (arrows) shown in A.

 

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