Blood Pool MR Angiography of Aortic Stent-Graft Endoleak
Hale Ersoy1,
Paula Jacobs2,
Craig K. Kent3 and
Martin R. Prince1
1 Department of Radiology, Weill Medical College of Cornell University, 416 E
55th St., New York, NY 10021.
2 Advanced Magnetics, Inc., Cambridge, MA 02138.
3 Department of Vascular Surgery, Weill Medical College of Cornell University,
New York, NY 10021.
View larger version (157K):
[in a new window]
|
Fig. 1A. —77-year-old man with aortic nitinol stent-graft. Arterial
phase axial CT scan shows endoleak (arrow [area outlined in
black]).
|
|
View larger version (122K):
[in a new window]
|
Fig. 1B. —77-year-old man with aortic nitinol stent-graft. Axial 3D
iron oxide–enhanced MR angiogram obtained 23 min after contrast
initialization shows endoleak (solid arrow [area outlined in white])
at level corresponding to that shown in A. Note wraparound ghosting
artifact (open arrow) in slice direction.
|
|
View larger version (138K):
[in a new window]
|
Fig. 1C. —77-year-old man with aortic nitinol stent-graft. MR angiogram
obtained 24 hr after A reveals increased volume of endoleak (solid
arrow [area outlined in white]) at same level as that shown in A
and B. This method was used to determine the area on every scan with
contrast extravasation into aneurysmal sac for calculating endoleak volume.
Note wraparound ghosting artifact (open arrow) in slice
direction.
|
|
View larger version (114K):
[in a new window]
|
Fig. 1D. —77-year-old man with aortic nitinol stent-graft. Endoleak
(straight arrow) is larger on this delayed phase (23 min) than on
arterial phase image shown in A, and feeder lumbar artery (curved
arrow) is visible.
|
|
View larger version (122K):
[in a new window]
|
Fig. 2A. —81-year-old man with nitinol stent-graft. Arterial phase CT
angiogram does not reveal endoleak, but arterial enhancement is poor.
|
|
View larger version (131K):
[in a new window]
|
Fig. 2B. —81-year-old man with nitinol stent-graft. Axial source scan
of arterial phase iron oxide–enhanced 3D MR angiogram shows early
endoleak (arrow).
|
|
View larger version (128K):
[in a new window]
|
Fig. 2C. —81-year-old man with nitinol stent-graft. Subsequent 15-min
(C) and 24-hr (D) equilibrium phase MR angiograms with fat
suppression show endoleak (arrows) is gradually increasing in
size.
|
|
View larger version (120K):
[in a new window]
|
Fig. 2D. —81-year-old man with nitinol stent-graft. Subsequent 15-min
(C) and 24-hr (D) equilibrium phase MR angiograms with fat
suppression show endoleak (arrows) is gradually increasing in
size.
|
|
View larger version (158K):
[in a new window]
|
Fig. 3A. —67-year-old man with slow endoleak. CT angiogram shows
negative findings for endoleak.
|
|
View larger version (176K):
[in a new window]
|
Fig. 3B. —67-year-old man with slow endoleak. Axial 24-hr blood pool MR
angiogram shows slow endoleak (arrows).
|
|
View larger version (76K):
[in a new window]
|
Fig. 3C. —67-year-old man with slow endoleak. Arterial phase sagittal
subvolume maximum-intensity-projection scan shows patent inferior mesenteric
artery (arrow), an endoleak feeder vessel.
|
|
CiteULike 
Complore 
Connotea 
Del.icio.us 
Digg 
Reddit 
Technorati What's this?
Copyright © 2004 by the American Roentgen Ray Society.
