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Evaluation of image quality in carotid and cerebrovascular disease: a comparative study between subtraction and routine computed tomography angiography.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Zhao, De-Li Wan, Yong Wang, Guo-Kun Wang, Hai-Bo Liang, Hong-Wei Zhou, Hai-Ting Gao, Li Zhang, Jin-Ling
Description	Country affiliation: China Author Affiliation: Zhao DL ( Department of CT, The Second Affiliated Hospital of Harbin Medical University, Harbin, China.); Wan Y ( Department of CT, The Second Affiliated Hospital of Harbin Medical University, Harbin, China.); Wang GK ( Department of CT, The Second Affiliated Hospital of Harbin Medical University, Harbin, China.); Wang HB ( Department of CT, The Second Affiliated Hospital of Harbin Medical University, Harbin, China.); Liang HW ( Department of CT, The Second Affiliated Hospital of Harbin Medical University, Harbin, China.); Zhou HT ( Department of CT, The Second Affiliated Hospital of Harbin Medical University, Harbin, China.); Gao L ( Department of CT, The Second Affiliated Hospital of Harbin Medical University, Harbin, China.); Zhang JL ( Department of CT, The Second Affiliated Hospital of Harbin Medical University, Harbin, China.)
Abstract	OBJECTIVE: Few data exist comparing the image quality and diagnostic accuracy of subtraction computed tomography (CT) angiography (SCTA) in carotid and cerebrovascular arteries with routine CT angiography (RCTA). PATIENTS AND METHODS: In this study, 56 patients underwent 128-row CT angiography of these vessels with review by two radiologists using routine, nonsubtracted, and SCTA protocols. Comparisons were made using a 4-point subjective rating scale in all patients. Eighteen patients were examined with both SCTA and invasive digital subtraction angiography (DSA). The accuracy of SCTA and routine CTA reformations was assessed and compared by both patient-based and vessel-based analyses of intracranial aneurysms and intracranial and extracranial arterial stenotic lesions using DSA results as the reference standard. RESULTS: Diagnostic accuracy in the adjacent skull base portion of the internal carotid artery (ICA) and reading time for cerebral aneurysms and vessel stenoses were obviously improved with SCTA protocol, but the accuracy in vertebro-basilar arteries was no different. The diagnostic accuracy in general was slightly increased compared with routine CTA. CONCLUSION: Review of SCTA images is an effective means to remove bone close to vessels as seen on routine CTA and has good image quality and diagnostic accuracy. SCTA is superior to routine CTA in the visualization and diagnostic accuracy of adjacent skull base part of the ICA and decreases reading time for carotid and cerebrovascular arterial imaging.
File Format	HTM / HTML
ISSN	07422822
Issue Number	11
Journal	Echocardiography
Volume Number	33
e-ISSN	15408175
Language	English
Publisher	Wiley
Publisher Date	2016-11-01
Publisher Place	United States
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Cardiology
Content Type	Text
Resource Type	Article
Subject	Radiology, Nuclear Medicine and Imaging Cardiology and Cardiovascular Medicine

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