title: [Evaluation of the contours and perianeurysmal environment of unruptured cerebral aneurysms, using three-dimensional magnetic resonance cisternogram].
abstract: To evaluate the anatomical relationship between cerebral aneurysm and the perianeurysmal environment within a cisternal space, the contours of an unruptured cerebral aneurysm and pericisternal structures were depicted on a three-dimensional (3D) MR cisternogram. By using perspective volume-rendering algorithm, the 3D MR cisternograms were reconstructed from the source axial volume data set obtained by the T2-weighted 3D fast spin-echo sequence. Those images were shown together with the coordinated 3D MR angiograms through similar visual projections, and then compared with the intraoperative findings. The outer wall configurations of cerebral aneurysms within the cisternal space were shown in conjunction with the accompanying surface veins, adjacent cranial nerves, dura mater and tentorial edge, cranial base bone, and surrounding pericisternal brain surfaces. With application of 3D MR cisternograms in the management of unruptured cerebral aneurysm, the anatomical relationship between the aneurysmal contours and the perianeurysmal environment could be evaluated the within the cisternal space. This might provide another clinical factor when considering the potential risk of growth, rupture, and symptomatic cranial nerve signs of an unruptured cerebral aneurysm.
authors.affiliation: Department of Neurological Surgery, Ryofukai Satoh Neurosurgical Hospital, 5-23-23 Matsunaga-cho, Fukuyama-city, Hiroshima 729-0104, Japan.
authors.forename: Toru
authors.initials: T
authors.lastname: Satoh
authors.forename: Chinami
authors.initials: C
authors.lastname: Ekino
authors.forename: Chika
authors.initials: C
authors.lastname: Ohsako
authors.forename: Atsushi
authors.initials: A
authors.lastname: Katsumata
authors.forename: Keisuke
authors.initials: K
authors.lastname: Onoda
authors.forename: Shoji
authors.initials: S
authors.lastname: Tsuchimoto
authors.forename: Masatoshi
authors.initials: M
authors.lastname: Yunoki
authors.forename: Koji
authors.initials: K
authors.lastname: Tokunaga
authors.forename: Kenji
authors.initials: K
authors.lastname: Sugiu
authors.forename: Isao
authors.initials: I
authors.lastname: Date
mesh_terms: D000293:Adolescent; D002946:Cisterna Magna / Q000473:pathology*; D005260:Female; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods*; D002532:Intracranial Aneurysm / Q000175:diagnosis* / Q000473:pathology; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008875:Middle Aged; D011446:Prospective Studies; D012189:Retrospective Studies