Yan Gong1,2, Chen Cao1,3, Yu Guo4, Binge Chang5, Zhiguo Sheng5, Wen Shen4, Ying Zou1,6, Xiudi Lu1,6, Jiahua Xing7, Shuang Xia8. 1. Department of Radiology, First Central Clinical College, Tianjin Medical University, Tianjin, 300192, China. 2. Department of Radiology, Tianjin Medical University Nankai Hospital, Tianjin, 300100, China. 3. Department of Radiology, Tianjin Huanhu Hospital, Key Laboratory for Cerebral Artery and Neural Degeneration of Tianjin, Tianjin, 300350, China. 4. Department of Radiology, Tianjin First Central Hospital, School of Medical, Nankai University, Tianjin, 300192, China. 5. Department of Neurosurgery, Tianjin First Central Hospital, School of Medical, Nankai University, Tianjin, 300192, China. 6. Department of Radiology, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, 300381, China. 7. School of Medicine, Nankai University, Tianjin, 300071, China. 8. Department of Radiology, Tianjin First Central Hospital, School of Medical, Nankai University, Tianjin, 300192, China. xiashuang77@163.com.
Abstract
OBJECTIVES: The purpose of this study was to compare the reproducibility and diagnostic agreement of high-resolution vessel wall imaging (HR-VWI) and time-of-flight magnetic resonance angiography (TOF-MRA) with digital subtraction angiography (DSA) to evaluate intracranial arterial stenosis. METHODS: We retrospectively enrolled patients who underwent HR-VWI and TOF-MRA with suspected intracranial artery disease and had DSA results from our institutional imaging database. Two neuroradiologists separately and independently evaluated anonymous image data for the stenotic lesions. DSA was analyzed by two neurointerventionalists and it served as a standard criterion. The reproducibility of these two MR techniques was determined by the intraclass correlation coefficients (ICCs). The diagnostic agreement to DSA was assessed by the concordance correlation coefficients (CCCs). RESULTS: A total of 246 lesions from 106 individuals were analyzed for stenotic degrees. The total intra-observer and inter-observer reproducibility of HR-VWI was excellent for identifying stenosis and better than of TOF-MRA. The overall concordance of HR-VWI with DSA was excellent with CCC = 0.932, whereas TOF-MRA was 0.694. In addition, HR-VWI could provide additional vessel wall information. CONCLUSIONS: HR-VWI has more advantages over TOF-MRA, such as better reproducibilities and diagnostic agreements with DSA to analyze intracranial arterial stenosis. It provides additional information that helps in clinical diagnosis and management. KEY POINTS: • High-resolution vessel wall imaging can assess intracranial arterial stenosis with a better reproducibility than TOF-MRA and has a higher diagnostic agreement with DSA. • High-resolution vessel wall imaging had a higher diagnostic agreement with DSA compared with TOF-MRA. • Apart from evaluating vascular stenosis, HR-VWI provided additional vessel wall information to help in clinical diagnosis.
OBJECTIVES: The purpose of this study was to compare the reproducibility and diagnostic agreement of high-resolution vessel wall imaging (HR-VWI) and time-of-flight magnetic resonance angiography (TOF-MRA) with digital subtraction angiography (DSA) to evaluate intracranial arterial stenosis. METHODS: We retrospectively enrolled patients who underwent HR-VWI and TOF-MRA with suspected intracranial artery disease and had DSA results from our institutional imaging database. Two neuroradiologists separately and independently evaluated anonymous image data for the stenotic lesions. DSA was analyzed by two neurointerventionalists and it served as a standard criterion. The reproducibility of these two MR techniques was determined by the intraclass correlation coefficients (ICCs). The diagnostic agreement to DSA was assessed by the concordance correlation coefficients (CCCs). RESULTS: A total of 246 lesions from 106 individuals were analyzed for stenotic degrees. The total intra-observer and inter-observer reproducibility of HR-VWI was excellent for identifying stenosis and better than of TOF-MRA. The overall concordance of HR-VWI with DSA was excellent with CCC = 0.932, whereas TOF-MRA was 0.694. In addition, HR-VWI could provide additional vessel wall information. CONCLUSIONS: HR-VWI has more advantages over TOF-MRA, such as better reproducibilities and diagnostic agreements with DSA to analyze intracranial arterial stenosis. It provides additional information that helps in clinical diagnosis and management. KEY POINTS: • High-resolution vessel wall imaging can assess intracranial arterial stenosis with a better reproducibility than TOF-MRA and has a higher diagnostic agreement with DSA. • High-resolution vessel wall imaging had a higher diagnostic agreement with DSA compared with TOF-MRA. • Apart from evaluating vascular stenosis, HR-VWI provided additional vessel wall information to help in clinical diagnosis.
Authors: H Ishimaru; M Ochi; M Morikawa; H Takahata; Y Matsuoka; T Koshiishi; T Fujimoto; A Egawa; K Mitarai; T Murakami; M Uetani Journal: AJNR Am J Neuroradiol Date: 2007-05 Impact factor: 3.825