Assessment of Coronary Stents in Vivo Through Photon-Counting Computed Tomography: A Study of Diagnostic Efficacy
By
Pietro G. Lacaita
Valentin Bilgeri
Philipp Spitaler
Benedikt Kindl
Wolfgang Dichtl
Ivan Lechner
Sebastian Reinstadler
Guy Friedrich
Gerlig Widmann
Gudrun M. Feuchtner
September 19, 2026
Clinical Scorecard: Assessment of Coronary Stents in Vivo Through Photon-Counting Computed Tomography: A Study of Diagnostic Efficacy At a Glance Category
Detail
Condition
Coronary Artery Disease (CAD)
Key Mechanisms
Photon-counting computed tomography (PCCT) provides higher spatial resolution and lower electronic noise compared to energy-integrating detector (EID) systems.
Target Population
Patients with previously implanted coronary stents undergoing assessment for in-stent restenosis (ISR).
Care Setting
Clinical assessment using advanced imaging techniques.
Key Highlights PCCT shows improved image quality and fewer artifacts compared to EID-CT.
The study assesses the diagnostic performance of PCCT for detecting ≥ 50% ISR.
In-stent lumen visibility is enhanced with ultrahigh-resolution imaging.
Current guidelines recommend caution in using coronary CTA for stents < 3 mm in diameter.
Guideline-Based Recommendations Diagnosis Management Monitoring & Follow-up Regular follow-up imaging may be necessary to assess for ISR, particularly in patients with risk factors for restenosis.
Patients should be monitored for symptoms of angina or other cardiac issues post-stenting.
Risks Patient & Prescribing Data Patients undergoing clinically indicated coronary CTA with previous stent implantation.
Use of intravenous iodinated contrast and beta blockers to optimize imaging conditions.
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