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Related Experiment Video

Updated: Jul 15, 2026

Identifying Coronary Artery Calcification on Non-gated Computed Tomography Scans

Identifying Coronary Artery Calcification on Non-gated Computed Tomography Scans

Published on: August 28, 2018

Coronary stent assessability by 64 slice multi-detector computed tomography.

Tej Sheth¹, Jonathan D Dodd, Udo Hoffmann

¹Cardiac MR-PET-CT Program, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, USA. shetht@mcmaster.ca

Catheterization and Cardiovascular Interventions : Official Journal of the Society for Cardiac Angiography & Interventions

|April 11, 2007

Summary

Assessing coronary stents with 64-slice multi-detector computed tomography (MDCT) showed that larger stents (≥3 mm) were more assessable. Smaller stents (<3 mm) often presented artifacts, limiting evaluation and necessitating improved MDCT resolution or stent design.

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Last Updated: Jul 15, 2026

Identifying Coronary Artery Calcification on Non-gated Computed Tomography Scans

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Published on: August 28, 2018

Semi-Automatic Graphical Tool for Measuring Coronary Artery Spatially Weighted Calcium Score from Gated Cardiac Computed Tomography Images

Semi-Automatic Graphical Tool for Measuring Coronary Artery Spatially Weighted Calcium Score from Gated Cardiac Computed Tomography Images

Published on: September 22, 2023

Area of Science:

Cardiovascular Imaging
Medical Device Technology
Radiology

Background:

Evaluating the assessability of modern coronary stent platforms using 64-slice multi-detector computed tomography (MDCT).
Assessing stent visualization quality, free from artifacts like partial volume effects, beam hardening, motion, calcification, or contrast limitations.

Purpose of the Study:

To determine the assessability of contemporary coronary stent platforms with 64-slice MDCT.
To identify factors influencing stent assessability in MDCT imaging.

Main Methods:

Prospective study of 54 stents in 44 patients within 48 hours of coronary stenting.
MDCT data acquired using a 64-slice scanner; assessability determined by blinded observers.
Assessability defined by clear visualization of the in-stent lumen.

Main Results:

56% (30/54) of stents were classified as assessable.
Stent diameter was the primary determinant of assessability.
Stents ≥3.0 mm were assessable in 85% of cases, while those <3 mm were assessable in only 26%.

Conclusions:

Contemporary stent designs on 64-slice MDCT exhibit artifact-free assessability primarily in larger diameter stents.
Improved MDCT spatial resolution or modified stent designs are required for noninvasive evaluation of smaller stents (<3 mm), where in-stent restenosis is more common.