脉冲多相对照介质注射协议在头部和部计算机断层扫描血管学中的可行性:一个系统的回顾性研究
Xinghao Yang1,2, Zheng Li1, Junyao Cai2
1Departments of CT, The Second Affiliated Hospital of Qiqihar Medical University, Qiqihar, Heilongjiang, China.
PeerJ
|December 1, 2025
概括
一种新的脉冲多相对照介质注射协议用于头部和部计算机断层扫描血管学 (CTA) 提高了图像质量. 与传统的协议相比,这种方法还显著减少了辐射暴露和对比剂的使用.
科学领域:
- 放射学 放射学是一门学科.
- 医疗成像医学成像
- 血管成像 血管成像
背景情况:
- 脑部计算机断层血管造影 (CTA) 对于诊断血管疾病至关重要.
- 优化对比介质注射协议对于改善图像质量和患者安全至关重要.
- 评估像脉冲多相注射这样的新技术可以带来更好的诊断结果.
研究的目的:
- 评估脉冲多相对照介质注射协议在头部和部CTA中的有效性和价值.
- 为了比较脉冲和传统CTA协议之间的客观和主观图像质量指标.
- 评估脉冲协议对辐射剂量和对比剂体积的影响.
主要方法:
- 对348名接受头部和部CTA的患者进行了回顾性分析.
- 患者被分为常规对比剂组 (60毫升) 和脉冲多相组 (35毫升初始,随后交替5毫升对比剂/5毫升盐水注射).
- 分析了客观测量 (CT值,CNR,SNR) 和主观图像质量得分,以及辐射剂量 (DLP,ED).
主要成果:
- 脉冲组表现出明显改善的主观图像质量和评审者之间的一致性.
- 虽然CT值,CNR和SNR等客观测量没有显著差异,但脉冲组在下静脉和上静脉中CT值较低.
- 脉冲协议导致辐射剂量 (DLP和ED) 和对比剂使用量显著降低.
结论:
- 脉冲多相对比介质注射协议在头部和部CTA中提供了卓越的主观图像质量.
- 这种创新的协议有效地减少了静脉对比残留物,从而实现了更清晰的成像.
- 脉冲方法显著降低了辐射暴露和对比剂消耗,提高了患者的安全性和成本效益.
相关概念视频
Imaging Studies for Cardiovascular System V: CT
261
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...
261
Imaging Studies III: Computed Tomography
261
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...
261
Radiological Investigation III: Pulmonary Angiogram and PET Scan
387
Radiological investigations are paramount in the diagnosis and management of various pulmonary diseases. Two essential investigations are the Pulmonary Angiogram and the Positron Emission Tomography (PET) Scan.
Pulmonary Angiogram
A Pulmonary Angiogram is an invasive procedure involving injecting a contrast medium through a catheter threaded into the pulmonary artery or the right side of the heart to visualize the pulmonary vasculature. Computed Tomography (CT) scans have mainly replaced this...
Pulmonary Angiogram
A Pulmonary Angiogram is an invasive procedure involving injecting a contrast medium through a catheter threaded into the pulmonary artery or the right side of the heart to visualize the pulmonary vasculature. Computed Tomography (CT) scans have mainly replaced this...
387
Imaging Studies I: CT and MRI
763
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...
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...
763
Imaging Studies VII: Vascular Imaging
292
DefinitionRenal angiography, also known as renal arteriography, is an imaging technique used to obtain a comprehensive view of blood flow and the vascular structure of blood vessels in the kidneys and surrounding areas.PurposeRenal angiography detects blood vessel abnormalities in the kidneys, such as aneurysms, stenosis, thrombosis, vascular tumors, and renal artery stenosis. It evaluates kidney function and guides interventional treatments like angioplasty or stent placement.Pre-Procedure...
292
Imaging Studies for Cardiovascular System IV: CMRI
296
Cardiovascular magnetic resonance imaging, or CMRI, is a non-invasive diagnostic test that employs a magnetic field and radiofrequency waves to create precise images of the heart and arteries. It provides comprehensive information about cardiac anatomy, function, perfusion, and tissue characterization without ionizing radiation.IndicationsCMRI diagnoses various heart conditions, including tissue damage from heart attacks, ischemic heart disease, myocarditis, aortic issues (tears, aneurysms,...
296


