Usefulness of the calculated apparent diffusion coefficient value in the differential diagnosis of retroperitoneal masses

Tomohiro Nakayama, Kengo Yoshimitsu, Hiroyuki Irie, Hitoshi Aibe, Tsuyoshi Tajima, Kenji Shinozaki, Akihiro Nishie, Yoshiki Asayama, Daisuke Kakihara, Shuji Matsuura, Hiroshi Honda

研究成果: Contribution to journalArticle査読

49 被引用数 (Scopus)

抄録

Purpose: To elucidate whether or not the apparent diffusion coefficient (ADC) values calculated from echo-planar diffusion-weighted (EPDW) MR images are useful In the differential diagnosis of retropentoneal masses. Materials and Methods: In 50 patients with known retroperitoneal masses EPDW images were performed with b-factors of 0-1100 seconds/mm2. The final histologic diagnoses of these lesions were as follows 12 malignant lymphomas four other malignant mesenchymal neoplasms, 25 malignant epithelial neoplasms seven benign mesenchymal neoplasms and two nonneoplastic lesions The ADC values obtained for the solid portion of the lesions were used to represent each lesion, and the values of the histologic groups were compared. Results: The respective value of ADC for 12 malignant lymphomas four other mesenchymal neoplasms, seven benign mesenchymal neoplasms, and two nonneoplastic lesions were as follows 0.66 ± 0.26, 1.26 ± 0.50, 0.90 ± 0.20, 1.87 ± 0.48, 1.32 ± 0.20 × 10-3 mm2/second The ADC value of the malignant lymphoma was significantly lower than that of the other malignant mesenchymal lesions and was also lower than the ADC of the benign lesions The ADC value of the malignant epithelial neoplasms was lower than that of the benign mesenchymal tumors The ADC values of the malignant and benign lesions were 0.94 ± 0.30 and 1.75 ± 0.49 × 10-3 mm 2/second, respectively, which also demonstrated a significant difference. Conclusion: ADC values calculated from EPDW MR images may provide useful information in the differential diagnosis of retropentoneal masses.

本文言語英語
ページ(範囲)735-742
ページ数8
ジャーナルJournal of Magnetic Resonance Imaging
20
4
DOI
出版ステータス出版済み - 10 2004

All Science Journal Classification (ASJC) codes

  • 放射線学、核医学およびイメージング

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