Contrast-enhanced MR Imaging of Metastatic Brain Tumor at 3 Tesla : Utility of T_1-weighted SPACE Compared with 2D Spin Echo and 3D Gradient Echo Sequence
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概要
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We evaluated the newly developed whole-brain, isotropic, 3-dimensional turbo spin-echo imaging with variable flip angle echo train (SPACE) for contrast-enhanced T1-weighted imaging in detecting brain metastases at 3 tesla (T). Twenty-two patients with suspected brain metastases underwent postcontrast study with SPACE, magnetization-prepared rapid gradient-echo (MP-RAGE), and 2-dimensional T1-weighted spin echo (2D-SE) imaging at 3T. We quantitatively compared SPACE, MP-RAGE, and 2D-SE images by using signal-to-noise ratios (SNRs) for gray matter (GM) and white matter (WM) and contrast-to-noise ratios (CNRs) for GM-to-WM, lesion-to-GM, and lesion-to-WM. Two blinded radiologists evaluated the detection of brain metastases by segment-by-segment analysis and continuously-distributed test. The CNR between GM and WM was significantly higher on MP-RAGE images than on SPACE images (P<0.01). The CNRs for lesion-to-GM and lesion-to-WM were significantly higher on SPACE images than on MP-RAGE images (P<0.01). There was no significant difference in each sequence in detection of brain metastases by segment-by-segment analysis and the continuously-distributed test. However, in some cases, the lesions were easier to detect in SPACE images than in other sequences, and also the vascular signals, which sometimes mimic lesions in MP-RAGE and 2D-SE images, were suppressed in SPACE images. In detection of brain metastases at 3T magnetic resonance (MR) imaging, SPACE imaging may provide an effective, alternative approach to MP-RAGE imaging for 3D T1-weighted imaging.
- 日本磁気共鳴医学会の論文
- 2008-03-31
著者
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深津 博
名古屋大学医学部放射線医学教室
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深津 博
名古屋大学放射線科
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深津 博
国立療養所鈴鹿病院 神経内科
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深津 博
名古屋大学医学部放射線科
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OGAWA Hiroshi
Department of Pathology, Seirei Mikatahara General Hospital
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NAGANAWA Shinji
Department of Radiology, Nagoya University Graduate School of Medicine
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KAWAI Hisashi
Department of Radiology, Nagoya University Graduate School of Medicine
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深津 博
名古屋大学医学部附属病院 放射線部
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IKEDA Mitsuru
Department of Neurosurgery,Rokko Island Hospital
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深津 博
名古屋大学 医学部放射線科
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Kawai Hisashi
Department Of Radiology Nagoya University Graduate School Of Medicine
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Ikeda Mitsuru
名古屋大学 大学院医学系研究科放射線医療学
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SAKURAI Yasuo
Department of Radiology, Teine Keijinkai Hospital
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Ogawa Hiroshi
Department Of Anatomy And Neurobiology Kyoto Prefectural University Of Medicine
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FUKATSU Hiroshi
Department of Radiology, Nagoya University Hospital
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Fukatsu Hiroshi
Department Of Radiology Nagoya University Graduate School Of Medicine
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Maruyama Katsuya
Siemens-asahi Medical Technologies Ltd.
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MATSUSHIMA Masaya
Department of Radiology, Nagoya University Graduate School of Medicine
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KOMADA Tomohiro
Department of Radiology, Nagoya University Graduate School of Medicine
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Ikeda Mitsuru
Department Of Radiological Technology Nagoya University School Of Health Sciences
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Ikeda Mitsuru
Department Of Medical Information And Medical Records Nagoya University Hospital
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KUBOTA Seiji
Department of Radiology, Nagoya University Graduate School of Medicine
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KAWAMURA Minako
Department of Radiology, Nagoya University Graduate School of Medicine
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Naganawa Shinji
Department Of Radiology Nagoya University Graduate School Of Medicine
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Sakurai Yasuo
Department Of Radiology Nagoya University Graduate School Of Medicine
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Maruyama Kunihiro
Siemens-asahi Medical Technologies Ltd.
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Kawamura Minako
Department Of Radiology Nagoya University Graduate School Of Medicine
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Fukatsu Hiroshi
名古屋大学医学部附属病院 放射線部
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Komada Tomomi
Department Of Radiology Nagoya University Graduate School Of Medicine
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Kubota Seiji
Department Of Radiology Nagoya University Graduate School Of Medicine
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Matsushima Masaya
Department Of Radiology Nagoya University Graduate School Of Medicine
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Sakurai Yasuo
Department Of Radiology Asahikawa Kosei General Hospital
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Ogawa Hiroshi
Department Of Radiology Nagoya University Graduate School Of Medicine
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Komada Tomohiro
Department Of Radiology Nagoya University Graduate School Of Medicine
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Naganawa Shinji
Departments Of Radiology Nagoya National Hospital
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