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使用自由呼吸、自门控4D磁共振成像工作流程对乳腺癌放疗中的乳房及危及器官进行运动评估。

Movement assessment of breast and organ-at-risks using free-breathing, self-gating 4D magnetic resonance imaging workflow for breast cancer radiation therapy.

作者信息

Habatsch Melanie, Schneider Manuel, Requardt Martin, Doussin Sylvain

机构信息

Siemens Healthcare GmbH, Erlangen, Germany.

出版信息

Phys Imaging Radiat Oncol. 2022 May 14;22:111-114. doi: 10.1016/j.phro.2022.05.007. eCollection 2022 Apr.

DOI:10.1016/j.phro.2022.05.007
PMID:35619641
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9127201/
Abstract

Motion management is essential in treatment planning of radiotherapy for breast cancer. This study assessed the movement of organs-at-risk and the breast using 4D magnetic resonance imaging (MRI). A self-gating respiration-resolved radial 3D gradient echo sequence was used. Five healthy volunteers were imaged at 1.5 T during free-breathing in supine position making use of a breast board. Median distances between heart and chest wall in axial views were 2.4 cm (range: 1.5 cm) and 3.0 cm (range: 1.7 cm) for end-of-exhale and end-of-inhale. 4D-MRI allowed organ delineation and might be a promising addition to novel RT planning for breast cancer patients.

摘要

运动管理在乳腺癌放射治疗的治疗计划中至关重要。本研究使用四维磁共振成像（4D-MRI）评估了危及器官和乳房的运动情况。采用了一种自门控呼吸分辨径向三维梯度回波序列。五名健康志愿者在仰卧位自由呼吸时，利用乳房板在1.5T磁场下进行成像。呼气末和吸气末时，轴位视图中心脏与胸壁之间的中位距离分别为2.4厘米（范围：1.5厘米）和3.0厘米（范围：1.7厘米）。4D-MRI能够进行器官勾画，可能是乳腺癌患者新型放疗计划中一个很有前景的补充手段。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/58d2/9127201/588ddef10cf4/gr2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/58d2/9127201/f7cdc6fe06b7/gr1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/58d2/9127201/588ddef10cf4/gr2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/58d2/9127201/f7cdc6fe06b7/gr1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/58d2/9127201/588ddef10cf4/gr2.jpg

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