MDCT Angiography for Detection and Quantification of Small Intracranial Arteries: Comparison with Conventional Catheter Angiography
J. Pablo Villablanca1,
Fernando J. Rodriguez1,2,
Tyler Stockman1,
Sonia Dahliwal1,
Michelle Omura1,
Saman Hazany1 and
James Sayre1
1 Department of Radiological Sciences, David Geffen School of Medicine at the
University of California, Los Angeles, 10833 Le Conte Ave., Rm. B3-115 CHS,
Los Angeles, CA 90095-1721.
2 Present address: Department of Radiology, University of New Mexico,
Albuquerque, NM 87131.
View larger version (131K):
[in this window]
[in a new window]
[as a PowerPoint slide]
|
Fig. 1A —47-year-old woman with normal intracranial arteries. Examples of 2D
and 3D CT angiographic and digital subtraction angiographic visualization of
anterior choroidal artery. Volume-rendered 3D CT angiogram in lateral to
medial projection shows left supraclinoid internal carotid artery (thick
arrow) in anterior aspect, posterior communicating artery
(arrowhead) in inferior aspect, and 0.8-mm anterior choroidal artery
(thin arrow).
|
|
View larger version (179K):
[in this window]
[in a new window]
[as a PowerPoint slide]
|
Fig. 1B —47-year-old woman with normal intracranial arteries. Examples of 2D
and 3D CT angiographic and digital subtraction angiographic visualization of
anterior choroidal artery. Digital subtraction angiogram in lateral projection
shows left supraclinoid internal carotid artery (thick arrow) in
anterior aspect, posterior communicating artery (arrowhead) in
inferior aspect, and 0.8-mm anterior choroidal artery (thin
arrow).
|
|
View larger version (81K):
[in this window]
[in a new window]
[as a PowerPoint slide]
|
Fig. 2A —38-year-old man with normal intracranial arteries. Examples of
digital subtraction angiographic visualization of recurrent artery of Heubner
not visualized with 2D or 3D CT angiography. Volume-rendered 3D CT angiogram
in frontal projection shows left internal carotid artery (thick
arrow), left A1 segment of anterior cerebral artery (arrowhead),
and M1 segment of middle cerebral artery (thin arrow). Recurrent
artery of Heubner is not visible.
|
|
View larger version (62K):
[in this window]
[in a new window]
[as a PowerPoint slide]
|
Fig. 2B —38-year-old man with normal intracranial arteries. Examples of
digital subtraction angiographic visualization of recurrent artery of Heubner
not visualized with 2D or 3D CT angiography. Coronal 2D CT angiographic
multiplanar reformatted image in frontal projection shows left internal
carotid artery (thick arrow), left A1 segment of anterior cerebral
artery (arrowhead), and M1 segment of middle cerebral artery
(thin arrow). Recurrent artery of Heubner is not visible.
|
|
View larger version (174K):
[in this window]
[in a new window]
[as a PowerPoint slide]
|
Fig. 2C —38-year-old man with normal intracranial arteries. Examples of
digital subtraction angiographic visualization of recurrent artery of Heubner
not visualized with 2D or 3D CT angiography. Left internal carotid artery
injection digital subtraction angiogram in frontal projection shows 0.4-mm
diameter recurrent artery of Heubner (curved arrow) arising from
proximal aspect of left A1 segment of anterior cerebral artery
(arrowhead).
|
|
View larger version (122K):
[in this window]
[in a new window]
[as a PowerPoint slide]
|
Fig. 3A —54-year-old woman with normal intracranial arteries. Examples of
visualization of anterior choroidal artery with 2D CT angiography and digital
subtraction angiography but not with 3D CT angiography. Three-dimensional CT
angiogram in superior oblique projection shows right internal carotid artery
(thick arrow), right A1 segment of anterior cerebral artery (thin
arrow), posterior communicating artery (arrowhead), and expected
location (curved arrow) of anterior choroidal artery, which is not
visible despite extensive adjustments of window and level settings.
|
|
View larger version (91K):
[in this window]
[in a new window]
[as a PowerPoint slide]
|
Fig. 3B —54-year-old woman with normal intracranial arteries. Examples of
visualization of anterior choroidal artery with 2D CT angiography and digital
subtraction angiography but not with 3D CT angiography. Axial 1-mm-thick
source image shows right supraclinoid internal carotid artery (straight
arrow), right M1 segment of middle cerebral artery (chevron),
posterior communicating artery (arrowhead), and slightly more distal,
right anterior choroidal artery (curved arrow) heading to choroidal
fissure.
|
|
View larger version (154K):
[in this window]
[in a new window]
[as a PowerPoint slide]
|
Fig. 3C —54-year-old woman with normal intracranial arteries. Examples of
visualization of anterior choroidal artery with 2D CT angiography and digital
subtraction angiography but not with 3D CT angiography. Digital subtraction
angiogram in lateral oblique projection and midarterial phase shows
0.4-mm-diameter anterior choroidal artery and associated choroidal blush
(arrowheads) arising from dorsal aspect of supraclinoid segment of
internal carotid artery. Origin (arrow) of posterior communicating
artery is inferior in relation to blush.
|
|
View larger version (139K):
[in this window]
[in a new window]
[as a PowerPoint slide]
|
Fig. 4A —61-year-old woman with normal intracranial arteries. Examples of
visualization of anterior communicating artery with 2D and 3D CT angiography.
Three-dimensional CT angiogram in superior oblique projection shows 1.1-mm
anterior communicating artery (arrowhead).
|
|
View larger version (178K):
[in this window]
[in a new window]
[as a PowerPoint slide]
|
Fig. 4B —61-year-old woman with normal intracranial arteries. Examples of
visualization of anterior communicating artery with 2D and 3D CT angiography.
Two-dimensional digital subtraction angiogram in frontal projection shows
slender anterior communicating artery (arrowhead).
|
|
CiteULike 
Complore 
Connotea 
Del.icio.us 
Digg 
Reddit 
Technorati What's this?
Copyright © 2007 by the American Roentgen Ray Society.
