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.
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.
Authors: Vijayam K Jayakrishnan; Philip M White; Douglas Aitken; Paul Crane; Alex D McMahon; Evelyn M Teasdale Journal: AJNR Am J Neuroradiol Date: 2003-03 Impact factor: 3.825
Authors: Charles B L M Majoie; Marcel van Straten; Henk W Venema; Gerard J den Heeten Journal: AJNR Am J Neuroradiol Date: 2004-05 Impact factor: 3.825
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Authors: M Romijn; H A F Gratama van Andel; M A van Walderveen; M E Sprengers; J C van Rijn; W J van Rooij; H W Venema; C A Grimbergen; G J den Heeten; C B Majoie Journal: AJNR Am J Neuroradiol Date: 2007-10-10 Impact factor: 3.825
Authors: Y Watanabe; N Kashiwagi; N Yamada; M Higashi; T Fukuda; S Morikawa; Y Onishi; K Iihara; S Miyamoto; H Naito Journal: AJNR Am J Neuroradiol Date: 2008-03-27 Impact factor: 3.825