摘要
Abstract
Objective To explore clinical application value of dual-energy subtract CTA in diagnosis of cerebral and carotid vascular dieases. Methods Between Mar.2011 and Apr.2016,1200 patients with suspected of cerebral and carotid vascular dieases underwent dual-energy CT for the head and neck.All date was postprocessed using the software of dual-energy (head bone removal).Two-dimensional and three-dimensional reformation were performed in all cases by means of curved vomule rendering (VR),maximum intensity projection (MIP),multi planar reconstruction (MPR) and curved planar reconstruction(CPR) respectively.All cases were analysed by two experienced radiologists. And 100 patients who underwent conventional subtraction CTA were selected as the control group, radiation dose between dual-energy CTA and conventional subtraction CTA were compared. Results 1200 patients,the were 532 normal patients and 668 abnormal patients. 100 patients were diagnosed as aneurysm (AM),25 patients as arteriovenous malformations (AVM), 292 patients as cerebral and carotid artery stenosis or obliteration, 5 patients as moyamoya diease (MMD), 4 patients as vertebrobsilar dolichoectasis(VBD), 15 patients as meningioma, 1 patient as internal carotid-cavernous fistulae(ICCF), 6 patients as cartid body tumor . The origin variations of carotid and vertebral artery vessles were in 58, etc. Radiation dose was decreased by 64% for dual-energy CTA compared with conventional subtraction CTA. Conclusion As a non-invasive,safely and quick method, dual-energy subtract CT angiography of the head and neck can display clearly cerebral and carotid veessles,which has a high diagnontic accuracy and has decreased radiation dose,being a practical imaging modality for diagnosis of cerebral and carotid vascular dieases.关键词
双源CT/双能量减影CTA/头颈部血管性疾病Key words
Dual-Source computer tomography/Dual-energy subtract computer tomography angiography/Cerebral and carotid vascular dieases
