N Takano1,2, M Suzuki3,2, R Irie2, M Yamamoto4, N Hamasaki2, K Kamagata3,2, K K Kumamaru3,2, M Hori3,2, H Oishi4,5, S Aoki3,2. 1. From the Department of Radiology (N.T., M.S., K. Kamagata, K.K. Kumamaru, M.H., S.A.), Graduate School of Medicine, Juntendo University, Tokyo, Japan ntakano@juntendo.ac.jp. 2. Department of Radiology (N.T., M.S., R.I., N.H., K. Kamagata, K.K. Kumamaru, M.H., S.A.), Juntendo University Hospital, Tokyo, Japan. 3. From the Department of Radiology (N.T., M.S., K. Kamagata, K.K. Kumamaru, M.H., S.A.), Graduate School of Medicine, Juntendo University, Tokyo, Japan. 4. Departments of Neurosurgery (M.Y., H.O.). 5. Neuroendovascular Therapy (H.O.), Juntendo University School of Medicine, Tokyo, Japan.
Abstract
BACKGROUND AND PURPOSE: Y-configuration stent-assisted coil embolization is used for treating wide-neck aneurysms. Noninvasive alternatives to x-ray DSA for follow-up after Y-configuration stent-assisted coil embolization treatment are required. This study aimed to assess the usefulness of non-contrast-enhanced MRA by using a Silent Scan (silent MRA) for follow-up after Y-configuration stent-assisted coil embolization for basilar tip aneurysms. MATERIALS AND METHODS: Seven patients treated with Y-configuration stent-assisted coil embolization for basilar tip aneurysms underwent silent MRA, 3D TOF-MRA, and DSA. Silent MRA and 3D TOF-MRA images were obtained during the same scan session on a 3T MR imaging system. Two neuroradiologists independently reviewed both types of MRA images and subjectively scored the flow in the stents on a scale of 1 (not visible) to 5 (nearly equal to DSA) by referring to the latest DSA image as a criterion standard. Furthermore, we evaluated the visualization of the neck remnant. RESULTS: In all patients, the 2 observers gave a higher score for the flow in the stents on silent MRA than on 3D TOF-MRA. The average score ± standard deviation was 4.07 ± 0.70 for silent MRA and 1.93 ± 0.80 (P < .05) for 3D TOF-MRA. Neck remnants were depicted by DSA in 5 patients. In silent MRA, neck remnants were depicted in 5 patients, and visualization was similar to DSA; however, in 3D TOF-MRA, neck remnants were depicted in only 1 patient. CONCLUSIONS: Silent MRA might be useful for follow-up after Y-configuration stent-assisted coil embolization.
BACKGROUND AND PURPOSE: Y-configuration stent-assisted coil embolization is used for treating wide-neck aneurysms. Noninvasive alternatives to x-ray DSA for follow-up after Y-configuration stent-assisted coil embolization treatment are required. This study aimed to assess the usefulness of non-contrast-enhanced MRA by using a Silent Scan (silent MRA) for follow-up after Y-configuration stent-assisted coil embolization for basilar tip aneurysms. MATERIALS AND METHODS: Seven patients treated with Y-configuration stent-assisted coil embolization for basilar tip aneurysms underwent silent MRA, 3D TOF-MRA, and DSA. Silent MRA and 3D TOF-MRA images were obtained during the same scan session on a 3T MR imaging system. Two neuroradiologists independently reviewed both types of MRA images and subjectively scored the flow in the stents on a scale of 1 (not visible) to 5 (nearly equal to DSA) by referring to the latest DSA image as a criterion standard. Furthermore, we evaluated the visualization of the neck remnant. RESULTS: In all patients, the 2 observers gave a higher score for the flow in the stents on silent MRA than on 3D TOF-MRA. The average score ± standard deviation was 4.07 ± 0.70 for silent MRA and 1.93 ± 0.80 (P < .05) for 3D TOF-MRA. Neck remnants were depicted by DSA in 5 patients. In silent MRA, neck remnants were depicted in 5 patients, and visualization was similar to DSA; however, in 3D TOF-MRA, neck remnants were depicted in only 1 patient. CONCLUSIONS: Silent MRA might be useful for follow-up after Y-configuration stent-assisted coil embolization.
Authors: Joanna D Schaafsma; Birgitta K Velthuis; Charles B L M Majoie; René van den Berg; Patrick A Brouwer; Frederik Barkhof; Omid Eshghi; Gerard A P de Kort; Rob T H Lo; Theo D Witkamp; Marieke E S Sprengers; Marianne A van Walderveen; Joseph C Bot; Esther Sanchez; W Peter Vandertop; Jan van Gijn; Erik Buskens; Yolanda van der Graaf; Gabriël J E Rinkel Journal: Radiology Date: 2010-05-26 Impact factor: 11.105
Authors: Jin Woo Choi; Hong Gee Roh; Won-Jin Moon; Na Ra Kim; Sung Gyu Moon; Chung Hwan Kang; Young Il Chun; Hyun-Seung Kang Journal: Korean J Radiol Date: 2011-09-27 Impact factor: 3.500
Authors: H Oishi; T Fujii; M Suzuki; N Takano; K Teranishi; K Yatomi; T Kitamura; M Yamamoto; S Aoki; H Arai Journal: AJNR Am J Neuroradiol Date: 2019-05-02 Impact factor: 3.825
Authors: N Takano; M Suzuki; R Irie; M Yamamoto; K Teranishi; K Yatomi; N Hamasaki; K K Kumamaru; M Hori; H Oishi; S Aoki Journal: AJNR Am J Neuroradiol Date: 2017-05-18 Impact factor: 3.825
Authors: F Cagnazzo; N Limbucci; S Nappini; L Renieri; A Rosi; A Laiso; D Tiziano di Carlo; P Perrini; S Mangiafico Journal: AJNR Am J Neuroradiol Date: 2018-12-06 Impact factor: 3.825