在CT肺血管造影中,低对比体积和低注射流速的可行性
Wan Chin Lee1, Jun Kai Poon2, Jacqueline Jin Hui Siah2
1Radiography, Changi General Hospital, Singapore.
Journal of medical imaging and radiation sciences
|June 19, 2024
概括
一种低体积对比介质,低流速 (LVLF) 计算机断层扫描肺血管扫描 (CTPA) 协议提供了与标准协议相比的诊断图像质量. 这种LVLF CTPA方法可能允许在难以静脉输入的患者中减少对比剂的使用.
科学领域:
- 放射学 放射学是一门学科.
- 医疗成像医学成像
- 心血管成像 - 心血管成像
背景情况:
- 计算机断层扫描肺血管图 (CTPA) 是诊断肺栓塞 (PE) 的标准.
- 最佳的肺动脉模糊化通常需要高流速对比介质 (CM) (>4.5ml/s) 的管理.
- 具有挑战性的静脉注射 (IV) 接入可以限制达到这些高流量.
研究的目的:
- 为了评估低体积CM,低流速 (LVLF) CTPA协议是否产生与标准协议相匹配的图像质量.
- 通过定量霍恩斯菲尔德单位 (HU) 测量动脉增强来评估图像质量.
- 通过主观放射科医生评估来评估图像质量.
主要方法:
- 对151名因怀疑PE而接受CTPA的患者的回顾性分析.
- 标准协议 (50ml CM在4.5ml/s) 和LVLF协议 (减少CM体积和流量) 之间的比较.
- 由独立的放射科医生和放射学家进行的定量HU测量和主观图像质量评分.
主要成果:
- 在多个肺动脉段的LVLF和标准CTPA协议之间,动脉衰减 (HU) 没有显著差异.
- 两种协议之间的整体主观图像质量得分没有显著差异.
- LVLF协议实现了与标准协议相比的诊断图像质量.
结论:
- LVLF CTPA 协议表现出与标准协议相似的增强和主观图像质量.
- 该协议为具有挑战性IV接入的患者提供了可行的替代方案.
- 在CTPA检查中优化对比介质剂量的潜力.
更多相关视频
05:26Two-Dimensional X-Ray Angiography to Examine Fine Vascular Structure Using a Silicone Rubber Injection Compound
Published on: January 7, 2019
5.8K
09:32Time-Resolved, Dynamic Computed Tomography Angiography for Characterization of Aortic Endoleaks and Treatment Guidance via 2D-3D Fusion-Imaging
Published on: December 9, 2021
3.0K
相关概念视频
Radiological Investigation III: Pulmonary Angiogram and PET Scan
91
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...
91
Radiological Investigation I: X-ray and CT
226
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...
226
