Measurements of target volumes and organs at risk using DW‑MRI in patients with central lung cancer accompanied with atelectasis.

IF 1.4 Q4 ONCOLOGY Molecular and clinical oncology Pub Date : 2023-06-01 DOI:10.3892/mco.2023.2641
Xinli Zhang, Tong Liu, Hong Zhang, Mingbin Zhang
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Abstract

Accurate imaging-based tumor delineation is crucial for guiding the radiotherapy treatments of various solid tumors. Currently, several imaging procedures, including diffusion-weighted magnetic resonance imaging (DW-MRI), intensified computed tomography and positron emission tomography are routinely used for targeted tumor delineation. However, the performance of these imaging procedures has not yet been comprehensively evaluated. In order to address this matter, the present study was conducted in an aim to assess the use of DW-MRI in guiding radiotherapy treatments, by comparing its performance to that of other imaging procedures. Specifically, the exposure dosages to organs at risk, including the lungs, heart and spinal mencord, were evaluated using various radiotherapy regimes. The findings of the present study demonstrated that DW-MRI is a non-invasive and cost-effective imaging procedure that can be used to reduce lung exposure doses, minimizing the risk of radiation pneumonitis. The data further demonstrate the immense potential of the DW-MRI procedure in the precision radiotherapy of lung cancers.

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使用DW - MRI测量伴有肺不张的中枢性肺癌患者的靶体积和危险器官。
准确的基于影像的肿瘤描绘对于指导各种实体瘤的放射治疗至关重要。目前,包括扩散加权磁共振成像(DW-MRI)、强化计算机断层扫描和正电子发射断层扫描在内的几种成像程序通常用于靶向肿瘤的描绘。然而,这些成像程序的性能尚未得到全面评估。为了解决这一问题,本研究旨在通过比较DW-MRI与其他成像程序的性能来评估DW-MRI在指导放射治疗中的应用。具体地说,使用各种放疗方案评估了对危险器官(包括肺、心脏和脊髓)的暴露剂量。本研究的结果表明,DW-MRI是一种非侵入性和成本效益高的成像程序,可用于减少肺部暴露剂量,最大限度地降低放射性肺炎的风险。这些数据进一步证明了DW-MRI在肺癌精确放疗中的巨大潜力。
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