RT Journal Article
SR Electronic
T1 Subtraction CT angiography with controlled-orbit helical scanning for detection of intracranial aneurysms.
JF American Journal of Neuroradiology
JO Am. J. Neuroradiol.
FD American Society of Neuroradiology
SP 291
OP 295
VO 19
IS 2
A1 Imakita, S
A1 Onishi, Y
A1 Hashimoto, T
A1 Motosugi, S
A1 Kuribayashi, S
A1 Takamiya, M
A1 Hashimoto, N
A1 Yamaguchi, T
A1 Sawada, T
YR 1998
UL http://www.ajnr.org/content/19/2/291.abstract
AB PURPOSE Our goal was to evaluate the utility of subtraction three-dimensional CT angiography for the detection of intracranial aneurysms.METHODS Thirty-six patients with intracranial aneurysms were examined using newly devised controlled-orbit helical scanning and conventional angiography. Three-dimensional CT angiograms and subtraction 3-D CT angiograms were compared with conventional angiograms for their characterization of intracranial aneurysms.RESULTS Fifty aneurysms were depicted on conventional angiograms, of which 48 (96%) were seen on the 3-D CT angiograms. Three-dimensional CT angiography was superior or equivalent to conventional angiography for depicting the shape, direction, and location of 33 (66%) of 50 aneurysms; however, it was often less useful than conventional angiography in delineating intracranial aneurysms adjacent to bone. Subtraction 3-D CT angiograms were obtained in 32 patients with a total of 46 aneurysms (in four cases, aneurysms were not depicted owing to excessive motion artifacts), and were superior or equivalent to conventional angiograms in all 46 cases.CONCLUSIONS Subtraction 3-D CT angiography with the use of controlled-orbit helical scanning is effective in the detection of intracranial aneurysms.