在CT中减少对比剂体积和辐射剂量,使用90kVp管电压,高管电流调制和先进的代算法
Min Su Park1, Hong Il Ha1, Jhii-Hyun Ahn2
1Department of Radiology, Hallym University Sacred Heart Hospital, Anyang-si, Gyeonggi-do, Republic of Korea.
PloS one
|June 15, 2023
概括
通过90kVp胰腺动态CT扫描降低计算机断层扫描 (CT) 辐射剂量,显著改善了图像质量和诊断信心,同时减少了对比剂体积和辐射暴露.
科学领域:
- 放射学 放射学是一门学科.
- 医疗成像医学成像
- 辐射瘤学 辐射瘤学
背景情况:
- 计算机断层扫描 (CT) 的使用正在增加,这引发了对辐射剂量的担忧.
- 在CT成像中,平衡图像质量,辐射剂量和对比材料至关重要.
研究的目的:
- 在胰腺动态计算机断层扫描 (PDCT) 中评估图像质量和辐射剂量,使用90kVp管电压和降低对比剂.
- 将90kVp PDCT与标准的100kVp PDCT进行比较.
主要方法:
- 51名患者接受了PDCT,使用90kVp和100kVp协议.
- 通过测量Hounsfield单位 (HU) 和图像噪声来评估客观图像质量.
- 主观图像质量由两名放射科医生对五个类别进行评估,包括损伤明显性和诊断性能.
主要成果:
- 90kVp组显示出对比剂体积 (24.4%),辐射剂量 (31.7%) 和图像噪声 (20.6%) 的显著降低 (p < 0.001).
- 对于大多数器官 (p < 0.001),对比度与噪声比率 (CNR),信号与噪声比率 (SNR) 和优点数字在90kVp组显著更高 (p < 0.001).
- 放射科医生认为90kVp组的主观图像质量更好,除了损伤明显性 (p < 0.001).
结论:
- 使用减少对比度和先进算法的90kVp PDCT实现了显著的辐射剂量减少.
- 该协议提高了胰腺CT成像的图像质量和诊断信心.
- 这些发现支持使用较低的管电压来优化胰腺CT协议.
相关概念视频
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
Imaging Studies for Cardiovascular System V: CT
45
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...
45
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
Radiological Investigation I: X-ray and CT
299
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...
299


