卡钳
超声波
磁共振成像
医学
核医学
放射治疗
三维超声
体积热力学
成像体模
放射科
数学
几何学
物理
量子力学
作者
Daniel Roth,Marcella Safi,Oskar Vilhelmsson Timmermand,Evangelia Sereti,Malwina Molendowska,Michael Gottschalk,Anders Bjartell,Crister Ceberg,Filip Szczepankiewicz,Joanna Strand
出处
期刊:PLOS ONE
[Public Library of Science]
日期:2024-07-25
卷期号:19 (7): e0307558-e0307558
标识
DOI:10.1371/journal.pone.0307558
摘要
Accurate tumor volume estimation is important for evaluating the response to radionuclide therapy and external beam radiotherapy as well as to other pharmaceuticals. A common method for monitoring the growth of subcutaneous tumors in pre-clinical models and assessing the treatment response is to measure the tumor length and width by external calipers to estimate its volume. This procedure relies on an assumption of a spheroidal tumor shape wherein the tumor depth equals the width and can yield considerably inaccuracies. Ultrasound imaging is a non-invasive technique that can measure all three axes of the tumor and might be an alternative to caliper measurement with potentially greater accuracy and comparable ease-of-use and throughput. Both 2D and 3D ultrasound imaging are possible, the former offering short scan times without the need for anesthesia and heating-valuable factors for longitudinal studies in large animal cohorts. Nevertheless, tumor volume estimation accuracy by 2D ultrasound imaging has seen limited investigation. In this study we have evaluated the accuracy of tumor volume estimation by caliper and 2D ultrasound with comparisons to reference measurements by magnetic resonance imaging (MRI) in a pre-clinical model of prostate cancer treated with either external beam radiotherapy, radionuclide therapy, or no treatment.
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