相关实验视频

Updated: Jan 13, 2026

High-Resolution Cardiac Positron Emission Tomography/Computed Tomography for Small Animals

High-Resolution Cardiac Positron Emission Tomography/Computed Tomography for Small Animals

Published on: December 16, 2022

优化对比度的低管电压胸部CT:一个随机对照试验低度对比介质

Jiho Park¹, Bo Mi Gil², Yun-Hyeon Kim³

¹Department of Radiology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 222, Banpo-daero, Seoul 06591, Republic of Korea.

Diagnostics (Basel, Switzerland)

|January 10, 2026

概括

使用100kVp胸部CT的低度对比介质 (LCCM) 提供与标准协议相匹配的图像质量. 这种方法可以减少不良反应,提高计算机断层扫描 (CT) 成像中的患者安全.

科学领域:

放射学放射学是一门学科.
医疗成像医学成像
诊断成像诊断成像诊断成像

背景情况:

传统的胸部CT协议通常使用更高的管电压和标准对比介质度.
优化对比介质 (CM) 度和管电压对于平衡图像质量,辐射剂量和患者安全至关重要.

研究的目的:

为了评估低度对比介质 (LCCM) 在100kVp胸部CT中的非劣势性,与标准协议相比.
评估不同CM度对增强型胸部CT扫描质量的影响.

主要方法:

一个前性的,多中心的,随机对照试验,涉及成年患者 (BMI <30).
参与者被分为四组:对照组 (120kVp,320 mgI/mL CM) 和三个测试组 (100kVp与320,270或240 mgI/mL CM).
图像质量由两个独立的读者评估,基于可接受扫描比例的非劣等性;记录了不良反应.

主要成果:

与LCCM (270和240 mgI/mL) 的100 kVp胸部CT显示的图像质量与标准方案相比并非劣.
虽然一个读者注意到100kVp和标准CM (320 mgI/mL) 的可接受扫描比例较低,但另一个读者没有发现明显的劣势.
在LCCM组中,注射部位疼痛和热感等不良反应较少发生,全身热量具有统计意义 (p = 0.003).

结论:

使用LCCM的低管电压 (100kVp) 胸部CT实现了与标准协议相比的无劣诊断图像质量.
使用100kVp的常规度CM可能会降低诊断上可接受的扫描的比例.
与100kVp胸部CT相结合的LCCM显示出由于减少不良事件而提高患者安全的潜力.

关键词:

计算机断层扫描 (CT) 是一种计算机断层扫描.对比媒介是对比媒介.胸部胸部胸部胸部管道电压的压力

更多相关视频

In Vivo Quantitative Assessment of Myocardial Structure, Function, Perfusion and Viability Using Cardiac Micro-computed Tomography

In Vivo Quantitative Assessment of Myocardial Structure, Function, Perfusion and Viability Using Cardiac Micro-computed Tomography

Published on: February 16, 2016

Novel In Vivo Micro-Computed Tomography Imaging Techniques for Assessing the Progression of Non-Alcoholic Fatty Liver Disease

Novel In Vivo Micro-Computed Tomography Imaging Techniques for Assessing the Progression of Non-Alcoholic Fatty Liver Disease

Published on: March 24, 2023

相关概念视频

Radiological Investigation I: X-ray and CT

Radiological Investigation I: X-ray and CT

Radiological investigations, including X-rays and computed tomography (CT) scans, are critical for diagnosing and evaluating various medical conditions. These imaging techniques provide valuable insights into the body's internal structures, aiding in the detection of abnormalities, assessment of disease progression, and development of treatment strategies. This article delves into two primary radiological investigations, chest X-rays and CT scans, outlining their purpose, procedures, and...

Imaging Studies for Cardiovascular System V: CT

Imaging Studies for Cardiovascular System V: CT

Cardiac computed tomography (CT) scanning is an advanced cardiac imaging technique that utilizes CT technology, with or without intravenous (IV) contrast, to produce accurate cross-sectional virtual slices of specific areas of the heart, coronary circulation, and major blood vessels such as the aorta, pulmonary veins, and arteries. The computer processes these slices to generate three-dimensional images. Multidetector CT (MDCT) is a rapid form of CT scanning that captures multiple slices...

Imaging Studies III: Computed Tomography

Imaging Studies III: Computed Tomography

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...