Detection of peritoneal dissemination in gynecological malignancy: evaluation by diffusion-weighted MR imaging

被引:177
作者
Fujii, Shinva [1 ]
Matsusue, Eiji [1 ]
Kanasaki, Yoshiko [1 ]
Kanamori, Yasunobu [2 ]
Nakanishi, Junko [1 ]
Sugihara, Shuji [1 ]
Kigawa, Junzo [2 ]
Terakawa, Naoki [2 ]
Ogawa, Toshihide [1 ]
机构
[1] Tottori Univ, Fac Med, Div Radiol, Dept Pathophysiol & Therapeut Sci, Yonago, Tottori 6838504, Japan
[2] Tottori Univ, Fac Med, Div Reproduct Perinatal Med & Gynecol Oncol, Dept Surg, Yonago, Tottori 6838504, Japan
关键词
MRI; diffusion-weighted; MR imaging; gynecology; ovarian cancer;
D O I
10.1007/s00330-007-0732-9
中图分类号
R8 [特种医学]; R445 [影像诊断学];
学科分类号
1002 ; 100207 ; 1009 ;
摘要
The aim of this study is to evaluate the usefulness of diffusion-weighted (DW) magnetic resonance (MR) imaging in detecting peritoneal dissemination in cases of gynecological malignancy. We retrospectively analyzed MR images obtained from 26 consecutive patients with gynecological malignancy. Peritoneal dissemination was histologically diagnosed in 15 of the 26 patients after surgery. We obtained DW images and half-Fourier single-shot turbo-spin-echo images in the abdomen and pelvis, and then generated fusion images. Coronal maximum-intensity-projection images were reconstructed from the axial source images. Reader interpretations were compared with the laparotomy findings in the surgical records. Receiver-operating characteristic (ROC) curves were used to represent the presence of peritoneal dissemination. In addition, the sensitivity and specificity were calculated. DW imaging depicted the tumors in 14 of 15 patients with penitoneal dissemination as abnormal signal intensity. ROC analysis yielded Az values of 0.974 and 0.932 for the two reviewers. The mean sensitivity and specificity were 90 and 95.5%. DW imaging plays an important role in the diagnosis and therapeutic management of patients with gynecological malignancy.
引用
收藏
页码:18 / 23
页数:6
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