三维TransRectal超声框架
Framework for 3D TransRectal Ultrasound
摘要:
前列腺活检主要在2D经直肠超声(TRUS)控制下通过根据预定义模式对前列腺进行采样来进行。在第一次活检的情况下,这种模式遵循随机系统计划。有时,可能需要重复活检以靶向先前活检未采样的区域或重新采样关键区域(例如,在癌症预期管理或先前前列腺上皮内瘤变发现的情况下)。从临床的角度来看,控制前列腺内这些活检的3D空间分布可能是有用的。现代3D-TRUS探头可以在几秒钟内采集高质量的前列腺体积。我们开发了一个框架来跟踪3D TRUS图像中的前列腺。这意味着,如果一个人在会话开始时采集参考体积,而在每次活检期间采集另一个参考体积,则可以通过对齐图像来确定参考体积中的前列腺与其他体积之间的关系。我们使用该工具来评估一名操作员(一名年轻的泌尿科助理教授)在2D TRUS引导下进行12次活检的能力。
英文摘要:
Prostate biopsies are mainly performed under 2D TransRectal UltraSound (TRUS) control by sampling the prostate according to a predefined pattern. In case of first biopsies, this pattern follows a random systematic plan. Sometimes, repeat biopsies can be needed to target regions unsampled by previous biopsies or resample critical regions (for example in case of cancer expectant management or previous prostatic intraepithelial neoplasia findings). From a clinical point of view, it could be useful to control the 3D spatial distribution of theses biopsies inside the prostate. Modern 3D-TRUS probes allow acquiring high-quality volumes of the prostate in few seconds. We developed a framework to track the prostate in 3D TRUS images. It means that if one acquires a reference volume at the beginning of the session and another during each biopsy, it is possible to determine the relationship between the prostate in the reference and the others volumes by aligning images. We used this tool to evaluate the ability of a single operator (a young urologist assistant professor) to perform a pattern of 12 biopsies under 2D TRUS guidance.
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