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イハラ トシコ
Toshiko Ito-Ihara
猪原 登志子 所属 川崎医科大学 医学部 応用医学 先端医療開発学 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 | Longitudinal MRI changes after focal therapy for prostate cancer: cryotherapy vs. microwave tissue coagulation. |
| 掲載誌名 | 正式名：Japanese journal of radiology 略 称：Jpn J Radiol ISSNコード：1867108X/18671071 |
| 掲載区分 | 国外 |
| 巻・号・頁 | 43(11),pp.1878-1892 |
| 著者・共著者 | Nana Kozawa, Kaori Yamada, Bunta Tokuda, Akiko Takahata, Yayoi Iwami, Toshiko Ito-Ihara, Atsuko Fujihara, Takumi Shiraishi, Takashi Ueda, Munehiro Ohashi, Osamu Ukimura, Kei Yamada |
| 発行年月 | 2025/11 |
| 概要 | PURPOSE:This study compared the longitudinal changes in multiparametric magnetic resonance imaging (mpMRI) findings following lesion-targeted focal cryotherapy with those after microwave tissue coagulation (MTC) therapy for localized prostate cancer with the aim of determining their modality-specific imaging characteristics and evolution over time.MATERIALS AND METHODS:The study included 16 patients (17 procedures) who underwent cryotherapy and 33 patients (34 procedures) who received MTC therapy between March 2017 and February 2024. Serial mpMRI scans were retrospectively reviewed for treatment-induced signal changes on T1-weighted imaging, T2-weighted imaging, diffusion-weighted imaging, and dynamic contrast-enhanced magnetic resonance imaging (MRI). Three radiologists independently reviewed the images, and interobserver agreement was evaluated.RESULTS:Early post-treatment MRI findings indicated distinct modality-specific patterns. Cryotherapy-treated lesions frequently demonstrated marked T1 hyperintensity, whereas MTC-treated lesions predominantly showed slight hyperintensity. On T2-weighted imaging and diffusion-weighted imaging, cryotherapy-treated lesions were characterized by hyperintensity with a hypointense rim, while MTC therapy was more likely to result in heterogeneous hypointensity. Early rim enhancement was common on dynamic contrast-enhanced MRI following cryotherapy (71.4%) and MTC (83.3%) and resolved by 23 and 41 months, respectively. In the late phase (> 12 months), imaging findings generally progressed toward fibrosis, which was characterized by hypointensity across all sequences without enhancement, although convergence timing varied from patient to patient.CONCLUSIONS:While there are distinct modality-specific differences in MRI characteristics in the early phase after between focal cryotherapy and MTC therapy for localized prostate cancer, late-stage findings converge, primarily reflecting fibrosis. These MRI features can help when monitoring |
| DOI | 10.1007/s11604-025-01831-4 |
| PMID | 40637832 |