机器学习能否识别必要的静脉对比剂量和注射速率,以在动态肝脏计算机断层扫描上实现最佳增强?
Takanori Masuda1, Takeshi Nakaura2, Yoshinori Funama3
1From the Department of Radiological Technology, Faculty of Health Science and Technology, Kawasaki University of Medical Welfare, Okayama.
Journal of computer assisted tomography
|June 28, 2023
概括
机器学习准确地预测对比剂量,以获得最佳的肝动态CT增强. 这种人工智能驱动的方法可以确保有效的成像,而不会影响诊断图像质量.
科学领域:
- 放射学 放射学是一门学科.
- 医疗成像医学成像
- 人工智能的人工智能
背景情况:
- 在肝动态CT中,最佳的对比增强对于准确的诊断至关重要.
- 确定精确的对比物质 (CM) 剂量可能具有挑战性,影响图像质量和患者安全.
- 目前用于CM剂量计算的方法可能并不总是有效地实现最佳增强.
研究的目的:
- 评估机器学习 (ML) 在预测肝动态CT最佳CM剂量的有效性.
- 为了比较基于ML的CM剂量预测与基于体重的传统协议.
- 评估ML引导的CM剂量对图像质量指标的影响.
主要方法:
- 集体ML回归器被训练并使用患者数据进行测试,以预测肝动态CT的CM剂量.
- 一项前性试验将基于ML的CM剂量协议与基于标准体重 (BW) 的协议进行了比较.
- 动脉和肝脏的CT数量,CM剂量和注射率在使用统计测试的协议之间进行比较.
主要成果:
- 与BW协议 (118.0 mL,3.9 mL/s) 相比,ML协议使用的CM剂量 (112.3 mL) 和注射速率 (3.7 mL/s) 略低一些,具有统计学上显著的差异 (P < 0.05).
- 在腹腔大动脉 (P = 0.20) 和肝膜膜 (P = 0.45) 的ML和BW协议之间没有观察到CT数量的显著差异.
- 观察到的CT数量的差异在预先确定的等效率范围内,表明图像质量可比.
结论:
- 机器学习有效地预测CM剂量和注射速率,以在肝动态CT中获得最佳的对比度增强.
- 基于ML的剂量实现了最佳的增强,而不会影响腹腔大动脉和肝膜的CT数量.
- 这表明了ML在优化对比增强CT协议的实用性,以提高效率和诊断准确性.
更多相关视频
04:09Predicting Treatment Response to Image-Guided Therapies Using Machine Learning: An Example for Trans-Arterial Treatment of Hepatocellular Carcinoma
Published on: October 10, 2018
8.3K
06:24Dynamic Contrast Enhanced Magnetic Resonance Imaging of an Orthotopic Pancreatic Cancer Mouse Model
Published on: April 18, 2015
15.2K
相关概念视频
Imaging Studies III: Computed Tomography
30
DefinitionComputed Tomography (CT) of the genitourinary (GU) tract is a non-invasive imaging modality that utilizes X-rays and computer processing to generate detailed cross-sectional images of the urinary system, encompassing the kidneys, ureters, bladder, and adjacent structures such as the adrenal glands.PurposeCT scans of the GU tract serve several diagnostic and therapeutic purposes, including:Diagnosis of Urinary Tract Diseases: Detects kidney stones, tumors, cysts, and congenital...
30
Computed Tomography
4.6K
Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
4.6K
