在能量整合和光子计数探测器CT系统之间基于冠状动脉CT血管学FFR的个体内比较
Emese Zsarnoczay1, Daniel Pinos2, U Joseph Schoepf2
1Division of Cardiovascular Imaging, Department of Radiology and Radiological Science, Medical University of South Carolina, Charleston, USA; MTA-SE Cardiovascular Imaging Research Group, Department of Radiology, Medical Imaging Centre, Semmelweis University, Budapest, Hungary.
International journal of cardiology
|December 27, 2023
概括
光子计数探测器 (PCD) CT-FFR是可行的,并且与能量集成探测器 (EID) CT-FFR有很强的一致性. 这种比较证实PCD-CT是非侵入性冠状动脉疾病评估的可行选择.
科学领域:
- 心脏病学 心脏病学
- 医疗成像医学成像
- 放射学 放射学是一门学科.
背景情况:
- 基于冠状动脉计算机断层扫描血管造影 (CCTA) 的分量流量储备 (CT-FFR) 非侵入性地评估冠状动脉疾病的严重程度.
- 从光子计数探测器 (PCD) 和能量整合探测器 (EID) 的CT系统中比较CT-FFR对于临床采用至关重要.
研究的目的:
- 在PCD-CT和EID-CT系统之间进行个体内CT-FFR测量比较.
- 用PCD-CT技术评估CT-FFR的可行性和一致性.
主要方法:
- 展望性,单中心研究,涉及22名患者,在30天内在EID-CT和PCD-CT系统上接受CCTA.
- 两个CT系统都使用了匹配的图像重建设置.
- 使用机器学习算法进行了半自动CT-FFR分析,CT-FFR ≤ 0.75被认为是显著的.
主要成果:
- 在每容器 (r=0.83,ICC=0.92) 和每患者 (r=0.90,ICC=0.93) 分析中,在EID-CT和PCD-CT之间的CT-FFR值中没有发现显著差异和强烈一致.
- 平均偏差是最小的 (0.02) 与狭窄的协议边界 (-0.14/0.19和-0.15/0.19).
- 所有患者都被两种CT系统一致分类 (CT-FFR>0.75对≤0.75).
结论:
- 使用PCD-CT进行CT-FFR评估是可行的.
- 基于PCD-CT的CT-FFR在图像重建相似时显示出与EID-CT的强烈一致.
- PCD-CT显示了功能性冠状动脉狭窄症可靠的非侵入性评估的潜力.
相关概念视频
Computed Tomography
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...
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 for Cardiovascular System VI: Calcium -Scoring CT
Calcium-Scoring CT ScanA calcium-scoring CT scan, also known as coronary artery calcium (CAC) scan, detects calcium deposits in the coronary arteries. This test assesses the risk of coronary artery disease (CAD), which can lead to cardiovascular events such as angina, heart failure, and sudden cardiac arrest.A calcium-scoring CT scan is generally recommended for individuals at intermediate risk of CAD without symptoms. It includes:Men aged 40-75 and women aged 50-75: Especially those with a...
Acute Coronary Syndrome III: Diagnostic Studies
Diagnosing acute coronary syndrome or ACS begins with a thorough patient history. Notable symptoms include central, crushing chest pain radiating to the left arm, neck, jaw, or back, along with shortness of breath, sweating (diaphoresis), nausea, vomiting, dizziness, and palpitations.It is crucial to note any history of cardiac illnesses and assess risk factors, including age, gender, smoking, hypertension, diabetes, hyperlipidemia, and a sedentary lifestyle.During physical examination, vital...


