Examples of quantitative assessment of treatment efficacy on MR images of a 50-year-old woman.

Jae Seok Bae (10275666), Jae Young Lee (493639), Hyun Hoon Chung (9742851), Maria Lee (3072345), Myung Jae Jeon (4401712), Hoon Kim (1964956), Hee Seung Kim (9742848), Kidong Kim (760970), Chang-Soon Lee (5842619), Keonho Son (18271589), Joon Koo Han (8292582)
2024 · doi:10.1371/journal.pone.0301193.g002 · W6904735611
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⚙ AI-generated summary by qwen3.7-flash, 2026-10-11 ⓘ

This paper illustrates quantitative assessment of treatment efficacy on MR images, demonstrating significant shrinkage and nonperfused volume ratios in a 50-year-old woman with an adenomyotic lesion following HIFU therapy.

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This study evaluates the efficacy of high-intensity focused ultrasound for treating uterine adenomyosis using optimized computer-simulated parameters. The research analyzes short-term and long-term outcomes in patients, utilizing magnetic resonance imaging to quantify lesion volume reduction and nonperfused tissue ratios. In a representative case, a fifty-year-old woman demonstrated an eighty percent shrinkage rate of the adenomyotic lesion three months post-treatment. This paper is centrally about adenomyosis — specifically the quantitative assessment of treatment efficacy via magnetic resonance imaging following high-intensity focused ultrasound therapy.

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Abstract

(A, B) Pre-HIFU sagittal and axial T2-weighted images show an adenomyotic lesion at the posterior wall of the uterus. The volume of the adenomyotic lesion was calculated as 0.523 × length × width × height (lines) and was equal to 60.8 cm3. (C–F) Three-month follow-up images of the same participant. (C, D) Sagittal and axial T2-weighted images show shrinkage of the adenomyotic lesion. The adenomyosis volume was calculated as 12.0 cm3, and the adenomyosis volume shrinkage rate was 80.3%. (E, F) Contrast-enhanced T1-weighted images demonstrate nonperfused volume, which was equal to 8.3 cm3. The calculated nonperfused volume ratio in this participant was 69.1%.
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Optimized treatment parameter by computer simulation for high-intensity focused ultrasound treatment of uterine adenomyosis: Short-term and long-term results Fig 2 Examples of quantitative assessment of treatment efficacy on MR images of a 50-year-old woman. (A, B) Pre-HIFU sagittal and axial T2-weighted images show an adenomyotic lesion at the posterior wall of the uterus. The volume of the adenomyotic lesion was calculated as 0.523 × length × width × height (lines) and was equal to 60.8 cm3. (C–F) Three-month follow-up images of the same participant. (C, D) Sagittal and axial T2-weighted images show shrinkage of the adenomyotic lesion. The adenomyosis volume was calculated as 12.0 cm3, and the adenomyosis volume shrinkage rate was 80.3%. (E, F) Contrast-enhanced T1-weighted images demonstrate nonperfused volume, which was equal to 8.3 cm3. The calculated nonperfused volume ratio in this participant was 69.1%.

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