相关实验视频

Updated: May 2, 2026

Automated Midline Shift and Intracranial Pressure Estimation based on Brain CT Images

Automated Midline Shift and Intracranial Pressure Estimation based on Brain CT Images

Published on: April 13, 2013

将间接的MRI信息纳入基于CT的深度学习模型,用于前列腺自身细分

Daan Stas¹, Geert De Kerf¹, Michaël Claessens²

¹Department of Radiation Oncology, Iridium Network, Antwerp, Belgium; Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium.

Radiotherapy and oncology : journal of the European Society for Therapeutic Radiology and Oncology

|February 23, 2025

概括

一个新的深度学习模型在CT扫描上准确地描述前列腺癌结构,遵循基于MRI的指导方针. 这个人工智能工具通过提高轮准确度而有助于放射治疗规划,而不需要直接MRI输入.

科学领域:

辐射疗法辐射疗法
医疗成像医学成像
人工智能的人工智能

背景情况:

计算机断层扫描 (CT) 成像在为前列腺癌划分软组织方面存在挑战.
目前的指导方针要求整合磁共振成像 (MRI) 信息以获得准确的轮.
准确的风险器官划分对于有效的前列腺癌放射治疗至关重要.

研究的目的:

开发和评估深度学习 (DL) 模型,用于CT图像上的前列腺和风险器官轮.
该模型旨在直接从CT数据中复制基于MRI的轮精度.
与欧洲放射治疗和瘤学会 (ESTRO) 和辐射瘤实践咨询委员会 (ACROP) 的指导方针保持一致.

主要方法:

利用了来自165名前列腺癌患者的CT扫描数据 (136名用于培训,29名用于测试).
开发了一个3D U-Net深度学习架构,用于轮关键区域:临床目标体积 (前列腺有/没有静脉),膀,阳肠和精液囊.
临床医生进行了定性审查,并使用子相似系数 (DSC) 和豪斯多夫距离 (HD95) 与手动划分进行了定量比较.

主要成果:

DL模型在前列腺目标体积 (CTV-iVP,CTV-eVP) 中获得了高质量评分,需要临床医生最小调整 (96%).
定量分析显示,CTV-iVP和CTV-eVP的性能可比,DSC为89%,HD95为4mm.
该模型对膀 (DSC 96%,HD95 2.9mm) 显示出强的结果,对直肠和精液囊泡显示出可接受的性能.

结论:

这是第一个在CT成像中实施MRI轮指南的DL模型.
基于CT的DL模型是根据ESTRO-ACROP指南进行训练的,这代表了一种新的方法.
开发的模型是放射治疗中前列腺划分的宝贵工具,减少了对直接MRI输入的依赖.

关键词:

自动细分可以实现.计算机断层扫描 (CT) 是一种计算机断层扫描.深度学习是一种深度学习.磁共振成像技术磁共振成像技术前列腺癌是什么意思前列腺癌是什么意思辐射疗法辐射疗法

更多相关视频

Brain Infarct Segmentation and Registration on MRI or CT for Lesion-symptom Mapping

Brain Infarct Segmentation and Registration on MRI or CT for Lesion-symptom Mapping

Published on: September 25, 2019

Application of Deep Learning-Based Medical Image Segmentation via Orbital Computed Tomography

Application of Deep Learning-Based Medical Image Segmentation via Orbital Computed Tomography

Published on: November 30, 2022

相关概念视频

Magnetic Resonance Imaging

Magnetic Resonance Imaging

Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...

Imaging Studies I: CT and MRI

Imaging Studies I: CT and MRI

Introduction: MRI and CT scans are crucial advancements in medical imaging techniques, playing a vital role in diagnosing conditions related to the gastrointestinal (GI) system. Each scan serves distinct purposes, targets specific areas, and requires unique nursing duties.
Description of the Procedures
Computed Tomography (CT) scan:
Computed Tomography (CT) scans use X-ray technology to generate detailed images of bones, organs, and tissues. During the scan, the patient lies on a moving table...

Imaging Studies IV: Magnetic Resonance Imaging

Imaging Studies IV: Magnetic Resonance Imaging

Introduction:Magnetic Resonance Imaging, or MRI, can include a specialized imaging technique of the urinary system known as Magnetic Resonance Urography (MRU). This radiation-free technique uses strong magnetic fields and radio waves to produce detailed images with the help of a computer. MRU is particularly effective for visualizing fluid-filled structures like the kidneys, ureters, and bladder.Applications of MRI in the Genitourinary SystemKidneys and Ureters: MRI detects tumors, cysts,...