Volumetric magnetic resonance guided high intensity focused ultrasound ablation of adenomyosis through transverse and longitudinal scars

Nguyễn Minh Đức
2017 · doi:10.1594/ecr2018/c-0237 · W2793207269
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This study investigated the efficacy of MR-guided high-intensity focused ultrasound for ablating adenomyosis, focusing on its application through transverse and longitudinal scars.

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This study evaluated the safety and efficacy of volumetric magnetic resonance-guided high-intensity focused ultrasound ablation for adenomyosis in patients with pre-existing transverse or longitudinal abdominal scars. Twenty women were divided into two groups based on scar orientation, all receiving a scar-patch to mitigate skin burns during treatment. The researchers found no statistically significant difference in immediate non-perfused volume ratios, adenomyosis volume reduction, or symptom improvement between the two groups at six-month follow-up. These results indicate that using a scar-patch allows for efficient and safe MR-HIFU treatment regardless of scar direction. This paper is centrally about adenomyosis — specifically assessing technical modifications for treating it in patients with prior abdominal surgeries.

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Abstract

Poster: ECR 2018 / C-0237 / Volumetric magnetic resonance guided high intensity focused ultrasound ablation of adenomyosis through transverse and longitudinal scars by: N. M. Duc 1, B. Keserci1, H. Q. Huy1, P. N. Hoa1, P. M. Thong2; 1Ho Chi Minh/VN, 2Ha Noi/VN
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Keywords

Interventional non-vascular, MR, Ablation procedures, Tissue characterisation Authors: N. M. Duc1, B. Keserci1, H. Q. Huy1, P. N. Hoa1, P. M. Thong2; 1Ho Chi Minh/VN, 2Ha Noi/VN DOI: 10.1594/ecr2018/C-0237 Aims and objectives The presence of transverse or longitudinal abdominal scars in the sonication beam path is still considered to be one of the limiting factors as their appearance might increase the risk of skin and scar burns during the high-intensity focused ultrasound ablation. Our aim was to compare the immediate non perfused volume (NPV) ratio, the complication rate, the adenomyosis volume reduction ratio, the transformed symptom severity score (tSSS) improvement at follow-up between patients with transverse and longitudinal scar patients groups using scar-patch in magnetic resonance guided...

Methods

and materials 20 women (38.2±5.1 years) who underwent MR-HIFU ablation were divided into 2 groups: the transverse scar group (N=10) and longitudinal scar group (N=10). The immediate NPV ratio, adenomyosis volume reduction ratio and tSSS at 6 months follow-up were accessed. All complications and adverse events were investigated during ablation procedure and follow-up period

Results

The volume of adenomyosis was 102.1ml ± 50.4 (57.0-162.0 ml) for the transverse scar group and 101.3ml ± 48.8 (46-152 ml) for the longitudinal scar group. The mean transverse and longitudinal scar size in length were 126.5 mm ± 49.2 and 111.8 mm ± 32.8, respectively. The NPV ratio was 72.1% ± 15.1 (57.5-100 %) in the transverse scar group and 69.4% ± 13.4 (58.5-100%) in the longitudinal scar group (p>0.05). The volume reduction ratio follow-up was 24.0% ± 18.2 (-4.5%-39.8%) for transverse scar group...

Conclusion

Our findings revealed no difference in treatment outcome between two groups. Therefore, we suggest that the scar-patch could be served efficiently in MR-HIFU treatment of adenomyosis patients with transverse and longitudinal abdominal scars. Personal information Dr. Nguyen Minh Duc Department of radiology, Pham Ngoc Thach university of medicine 86/2 Thanh Thai, Ward 12, District 10, Ho Chi Minh city, Viet Nam Mobile phone: +84902886899 Email: [email protected]

References

1. Gorny KR, Chen S, Hangiandreou NJ, et al. Initial evaluation of acoustic reflectors for the preservation of sensitive abdominal skin areas during MRgFUS treatment. Phys Med Biol. 2009; 54:125–133. 2. Yoon SW, Seong SJ, Jung SG, et al. Mitigation of abdominal scars during MR-guided focused ultrasound treatment of uterine leiomyomas with the use of an energy-blocking scar patch. J Vasc Interv Radiol 2011; 22:1747–1750. 3. Keserci B, Nguyen D. Volumetric magnetic resonance-guided high-intensity focused ultrasound ablation of uterine fibroids through abdominal scars: the impact...

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adenomyosis

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