title: Usefulness of four-dimensional computed tomographic angiography in a vertebral artery dissection case.
abstract: Discrimination of intramural hematoma from intra-aneurysmal blood flow is a critical issue for determining the necessity of treatment in vertebral artery dissection (VAD) cases. We describe modified four-dimensional computed tomographic angiography (4D-CTA) that is useful for evaluating blood flow in a dissected vertebral artery in a 41-year-old man who was diagnosed as VAD. Magnetic resonance angiography (MRA) showed a growth of intramural hematoma, which was confusingly similar to intra-aneurysmal blood flow. Modified 4D-CTA enabled us to discriminate the intramural hematoma from blood flow because of its fine time and spatial resolution. Modified 4D-CTA may be a substitute for angiography in VAD cases.
authors.affiliation: Department of Neurosurgery, Shiga Medical Center for Adults, Moriyama, Japan. masahirosawada1@gmail.com.
authors.forename: Masahiro
authors.initials: M
authors.lastname: Sawada
authors.affiliation: Department of Neurosurgery, Shiga Medical Center for Adults, Moriyama, Japan.
authors.forename: Toshihiro
authors.initials: T
authors.lastname: Munemitsu
authors.affiliation: Department of Neurosurgery, Shiga Medical Center for Adults, Moriyama, Japan.
authors.forename: Masato
authors.initials: M
authors.lastname: Hojo
mesh_terms: D000328:Adult; D056973:Four-Dimensional Computed Tomography; D006406:Hematoma / Q000175:diagnosis; D006801:Humans; D018810:Magnetic Resonance Angiography; D008297:Male; D064847:Multimodal Imaging; D020217:Vertebral Artery Dissection / Q000175:diagnosis / Q000000981:diagnostic imaging*
keywords: Four-dimensional computed tomographic angiography; Intramural hematoma; Vertebral artery dissection