相关实验视频

Updated: Jun 14, 2025

Continuous Blood Sampling in Small Animal Positron Emission Tomography/Computed Tomography Enables the Measurement of the Arterial Input Function

Continuous Blood Sampling in Small Animal Positron Emission Tomography/Computed Tomography Enables the Measurement of the Arterial Input Function

Published on: August 8, 2019

使用双源光子计数探测器同时进行高音调多能量CT肺血管造影CT:一个幻影实验

Jelena M Mihailovic¹, Michael R Bruesewitz¹, Joseph R Swicklik¹

¹Department of Radiology, Mayo Clinic, Rochester, Minnesota, USA.

Journal of applied clinical medical physics

|August 29, 2024

概括

光子计数探测器CT可以同时进行多能量和高调成像,提高CT肺血管造影的准确性. 这项技术减少了运动器件,提高了肺栓塞的评估与精确的量化.

科学领域:

医疗成像医学成像
放射学放射学是一门学科.
光子计数探测器技术的技术

背景情况:

双源CT系统提供高调螺旋模式 (66 ms时间分辨率),以减少CT肺血管造影 (CTPA) 中的运动器件.
多能 (ME) 模式提供图,对于肺栓塞 (PE) 评估至关重要.
电流能集成探测器 (EID) CT不能同时执行ME和高调采集.

研究的目的:

评估光子计数探测器 (PCD) CT在CTPA中同时进行高音和ME成像的能力.
评估运动对图像质量和诊断准确性的影响.

主要方法:

使用了一种模拟呼吸运动的运动幻影.
用和模拟血栓的管子被扫描,使用单独的高音调/ME EID-CT和同时高音调ME PCD-CT.
重建了虚拟单能图像和图;测量了血栓封闭率的百分比.

主要成果:

EID-CT ME扫描显示出显著的运动工件.
与EID-CT ME相比,PCD-CT高度ME在运动中显示出更稳定的度测量,标准偏差较低.
与EID-CT不同的是,PCD-CT高调ME在静态和移动条件之间的血栓封闭测量中显示出良好的一致性.

结论:

结合ME和高音模式的PCD-CT允许同时进行准确的量化.
这种技术使CTPA中血管内阻塞的可靠评估更容易,即使患者运动.

关键词:

双源计算机断层扫描技术光子计数探测器计算机断层扫描.肺栓塞肺栓塞是一种肺栓塞.

更多相关视频

Multi-modal Pulmonary Imaging: Using Complementary Information from CT and Hyperpolarized 129Xe MRI to Evaluate Lung Structure-Function

Multi-modal Pulmonary Imaging: Using Complementary Information from CT and Hyperpolarized 129Xe MRI to Evaluate Lung Structure-Function

Published on: April 12, 2024

Use of a Multi-compartment Dynamic Single Enzyme Phantom for Studies of Hyperpolarized Magnetic Resonance Agents

Use of a Multi-compartment Dynamic Single Enzyme Phantom for Studies of Hyperpolarized Magnetic Resonance Agents

Published on: April 15, 2016

相关概念视频

Computed Tomography

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...

Radiological Investigation III: Pulmonary Angiogram and PET Scan

Radiological Investigation III: Pulmonary Angiogram and PET Scan

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...

Positron Emission Tomography

Positron Emission Tomography

Positron emission tomography (PET) is a medical imaging technique involving radiopharmaceuticals — substances that emit short-lived radiation. Although the first PET scanner was introduced in 1961, it took 15 more years before radiopharmaceuticals were combined with the technique and revolutionized its potential.
One of the main requirements of a PET scan is a positron-emitting radioisotope, which is produced in a cyclotron and then attached to a substance used by the part of the body...