Additional benefit of computed diffusion-weighted imaging for detection of hepatic metastases at 1.5 T

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• 作者：Seiya Kawahara ^{butaemon@kuhp.kyoto-u.ac.jp" class="auth_mail" title="E-mail the corresponding author} ; Hiroyoshi Isoda ; ^{sayuki@kuhp.kyoto-u.ac.jp" class="auth_mail" title="E-mail the corresponding author} ; Koji Fujimoto ^{kfb@kuhp.kyoto-u.ac.jp" class="auth_mail" title="E-mail the corresponding author} ; Hironori Shimizu ^{hshimizu@kuhp.kyoto-u.ac.jp" class="auth_mail" title="E-mail the corresponding author} ; Akihiro Furuta ^{akihirof@kuhp.kyoto-u.ac.jp" class="auth_mail" title="E-mail the corresponding author} ; Shigeki Arizono ^{arizono@kuhp.kyoto-u.ac.jp" class="auth_mail" title="E-mail the corresponding author} ; Tsuyoshi Ohno ^{goohno@kuhp.kyoto-u.ac.jp" class="auth_mail" title="E-mail the corresponding author} ; Rikiya Yamashita ^{rickdom@kuhp.kyoto-u.ac.jp" class="auth_mail" title="E-mail the corresponding author} ; Ayako Ono ^{nanohananooki@gmail.com" class="auth_mail" title="E-mail the corresponding author} ; Kaori Togashi ^{ktogashi@kuhp.kyoto-u.ac.jp" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Magnetic resonance imaging ; Diffusion MRI ; Computed DWI ; Hepatic metastases
• 刊名：Clinical Imaging
• 出版年：2016
• 出版时间：May-June 2016
• 年：2016
• 卷：40
• 期：3
• 页码：481-485
• 全文大小：364 K

文摘

The aim is to investigate the added value of computed diffusion-weighted magnetic resonance imaging (DWI) at 1.5 T in detecting hepatic metastases. Fifty-six patients with a total of 100 hepatic metastases were included. Computed DWI was synthesized from lower b values. Diagnostic performance was evaluated by receiver operating characteristic (ROC) curve analysis. The sensitivity was calculated and analyzed. The area under the ROC curve of the computed DWI was larger than that of acquired DWI. Both readers detected significantly more hepatic metastases with combined acquired DWI/computed DWI. Combined use of computed DWI with acquired DWI helped to provide higher sensitivity at 1.5 T.