Related Experiment Video
Updated: May 25, 2026

In Vivo Quantitative Assessment of Myocardial Structure, Function, Perfusion and Viability Using Cardiac Micro-computed Tomography
Published on: February 16, 2016
Photon-Counting Computed Tomography for In-Stent Occlusion: Lumen Visualization and Myocardial Viability
Khoi Viet Nguyen1, Van Tu Nguyen1, Ngoc Trang Nguyen1
1Institute of Diagnostic and Interventional Radiology, Bach Mai Hospital, Hanoi, Vietnam.
Background:
Conventional computed tomography evaluation of coronary stents is frequently limited by metal blooming artifacts. Ultra-high-resolution photon-counting detector computed tomography (PCCT) improves visualization of the internal vessel lumen and allows myocardial tissue characterization within a single noninvasive acquisition.
Case Summary:
A 58-year-old man with prior right coronary artery stenting presented with crescendo chest pain despite optimal therapy. Ultra-high-resolution PCCT demonstrated chronic total in-stent occlusion and robust left anterior descending artery-to-right coronary artery collaterals. Spectral iodine mapping identified a nonviable transmural scar, supporting conservative management and avoiding unnecessary high-risk revascularization.
Discussion:
Recent studies report high concordance between PCCT and magnetic resonance imaging for late enhancement. This case interests readers by demonstrating PCCT's "one-stop-shop" capability to surpass traditional imaging barriers, providing the detailed evidence necessary to optimize high-stakes clinical decisions.
Take-Home Message:
PCCT may improve diagnostic workflows and enhance precision for the management of complex coronary artery disease.
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