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フククラ ヨシヒコ
Yoshihiko Fukukura
福倉 良彦 所属 川崎医科大学 医学部 臨床医学 機能・代謝画像診断学 職種 教授 |
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| 論文種別 | 原著 |
| 言語種別 | 英語 |
| 査読の有無 | 査読あり |
| 表題 | Computed diffusion-weighted MR imaging for visualization of pancreatic adenocarcinoma: Comparison with acquired diffusion-weighted imaging. |
| 掲載誌名 | 正式名：European journal of radiology 略 称：Eur J Radiol ISSNコード：18727727/0720048X |
| 掲載区分 | 国外 |
| 巻・号・頁 | 95,pp.39-45 |
| 著者・共著者 | Yoshihiko Fukukura, Yuichi Kumagae, Hiroto Hakamada, Toshikazu Shindo, Koji Takumi, Kiyoshisa Kamimura, Masanori Nakajo, Aya Umanodan, Takashi Yoshiura |
| 発行年月 | 2017/10 |
| 概要 | OBJECTIVE:To assess the feasibility of computed diffusion-weighted imaging (cDWI) in comparison with directly acquired DWI for visualizing pancreatic adenocarcinomas.MATERIALS AND METHODS:Patients with pancreatic adenocarcinoma underwent DWI at b-values of 0, 1000 (DWI1000), 1500 (DWI1500) and 2000 (DWI2000) s/mm2. From DWIs at b-values of 0 and 1000s/mm2, we generated cDWIs at b-values of 1500 (cDWI1500) and 2000 (cDWI2000) s/mm2. DWI findings of pancreatic adenocarcinomas (clear hyperintensity; hyperintensity with an unclear distal border; and isointensity), the image quality and the tumor to pancreas contrast ratio (CR) were compared between directly acquired DWI and cDWI.RESULTS:Among the 63 included patients, clear hyperintense tumors were seen in 35 on DWI1000, 50 on DWI1500, 50 on cDWI1500, 53 on DWI2000 and 44 on cDWI2000. Incidence of clear hyperintense tumors was significantly higher on cDWI1500 than on DWI1000 (P=0.013). There was no significant difference in the incidence of clear hyperintense tumors between DWI1500 and cDWI1500 (P>0.999), but a lower incidence was seen on cDWI2000 than on DWI2000 (P=0.028). Image quality was lower on cDWI than on DWI at b-values of 1500 (P=0.002) and 2000s/mm2 (P<0.001). The tumor to distal pancreas CR was significantly higher on cDWI2000 than on cDWI1500 (P<0.001), and on cDWI1500 than on DWI1000 (P<0.001). The cDWI showed a significantly higher tumor to distal pancreas CR than DWI at b-values of 1500 (P=0.004) and 2000s/mm2 (P<0.001).CONCLUSIONS:cDWI1500 generated from b-values of 0 and 1000s/mm2 should be considered more effective than DWI1000 and at least as effective as DWI1500. |
| DOI | 10.1016/j.ejrad.2017.07.022 |
| PMID | 28987696 |