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Imaging Studies for Cardiovascular System V: CT

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...

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Related Experiment Video

Updated: Jul 18, 2026

Imaging In-Stent Restenosis: An Inexpensive, Reliable, and Rapid Preclinical Model

Imaging In-Stent Restenosis: An Inexpensive, Reliable, and Rapid Preclinical Model

Published on: September 14, 2009

Improving Visualization of In-stent Lumen Using Prototype Photon-counting Detector Computed Tomography with

Yoshinori Funama¹, Seitaro Oda², Fuyuhiko Teramoto³

¹Department of Medical Radiation Sciences, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan.

Journal of Medical Physics

|June 3, 2024

Summary

Photon-counting detector CT (PCD CT) with a high-resolution plaque kernel offers superior visualization of coronary artery lumen size and in-stent stenosis compared to energy-integrating detector CT (EID CT). This advanced imaging technique provides more accurate measurements, regardless of stent orientation.

Keywords:

Energy-integrating detector computed tomography in-stent plaque visibility lumen size photon-counting detector computed tomography

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Generation and 3-Dimensional Quantitation of Arterial Lesions in Mice Using Optical Projection Tomography

Generation and 3-Dimensional Quantitation of Arterial Lesions in Mice Using Optical Projection Tomography

Published on: May 26, 2015

Area of Science:

Medical Imaging
Radiology
Cardiovascular Imaging

Background:

Accurate assessment of coronary artery lumen size and in-stent stenosis is crucial for cardiovascular disease management.
Conventional energy-integrating detector computed tomography (EID CT) may have limitations in visualizing fine details, particularly around stents.
Photon-counting detector computed tomography (PCD CT) represents a technological advancement with potential for improved image quality.

Purpose of the Study:

To compare the performance of PCD CT utilizing a high-resolution (HR) plaque kernel against EID CT.
To evaluate the visualization of lumen size and the in-stent stenotic portion at various coronary vessel angles.
To determine the accuracy of measurements for lumen dimensions and stenosis severity in coronary stents.

Main Methods:

Utilized photon-counting detector computed tomography (PCD CT) with an HR-plaque kernel and energy-integrating detector CT (EID CT).
Acquired coronary CT angiography datasets to assess lumen size and in-stent stenotic portions.
Analyzed images at different coronary vessel angles (0°, 45°, 90°) and calculated the mean degree of in-stent stenosis.

Main Results:

PCD CT with HR-plaque kernel consistently provided wider lumen size measurements compared to EID CT across all angles.
Mean in-stent stenotic portion was significantly lower with PCD CT (69.7%) versus EID CT (90.4%).
PCD CT demonstrated superior visualization of lumen size and accurate measurement of stenotic portions, irrespective of stent direction.

Conclusions:

PCD CT with HR-plaque kernel significantly enhances the visualization of coronary artery lumen size.
This technique offers more accurate quantification of the in-stent stenotic portion compared to conventional EID CT.
PCD CT is a promising tool for improved assessment of coronary artery stents and related pathologies.