MRI findings of extranodal malignant lymphoma and squamous cell carcinoma in the head and neck regions

Tomoko Shiraishi, Toru Chikui, Daisuke Inadomi, Marie Hashimoto, Chika Horio, Toyohiro Kagawa, Kunihiro Miwa, Kenji Yuasa

研究成果: Contribution to journalArticle査読

1 被引用数 (Scopus)

抄録

Objectives To compare magnetic resonance imaging (MRI) findings between patients with malignant lymphoma (ML) and squamous cell carcinoma (SCC) in the head and neck regions, and to show the characteristic findings for ML. Methods We analyzed 10 lesions in nine patients with ML and 25 lesions in 25 patients with SCC. Diffusion-weighted imaging, T1-weighted imaging, and T2-weighted imaging were performed for all lesions. We estimated the apparent diffusion coefficients (ADCs) with b-factors of 0, 500, and 1000 s/mm2, and obtained the means and standard deviations. In 29 cases, dynamic contrast-enhanced MRI (DCE-MRI) was performed and time–intensity curves were obtained. The peak time, maximum-to-initial ratio (MI ratio), end-to-maximum ratio, and end-to-initial ratio (EI ratio) were estimated. Receiver-operating characteristic analyses were performed to estimate the diagnostic power for these indices. Results The mean ADC for ML (0.762 ± 0.126 × 10−3 mm2/s) was significantly lower than that for SCC (1.24 ± 0.22 × 10-3 mm2/s, p < 0.0001). ML had a smaller MI ratio (2.13 ± 0.26) and smaller EI ratio (1.90 ± 0.29) than SCC (MI ratio: 2.46 ± 0.38, p = 0.033; EI ratio: 2.19 ± 0.29, p = 0.025). The area under the curve for the mean ADC (0.989) was higher than those for the MI ratio (0.779) and EI ratio (0.792).

本文言語英語
ページ(範囲)98-104
ページ数7
ジャーナルOral Radiology
32
2
DOI
出版ステータス出版済み - 7 23 2016

All Science Journal Classification (ASJC) codes

  • 歯科学(その他)
  • 放射線学、核医学およびイメージング

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