[Photon-Counting Detector CT: Advances and Clinical Applications in Cardiovascular Imaging]

Area of Science:

• Medical Imaging
• Radiology
• Cardiovascular Diagnostics

Background:

• Dual-source photon-counting detector CT (PCD-CT) has emerged as a significant advancement since its 2021 approval.
• Its application in cardiovascular imaging is rapidly evolving, with growing research and clinical insights.

Purpose of the Study:

• To provide a comprehensive review of current knowledge and research on dual-source PCD-CT in cardiovascular imaging.
• To illustrate innovative applications and future perspectives through case examples.

Main Methods:

• Structured literature review using Google Scholar and PubMed with keywords: "photon-counting detector", "cardiovascular CT", "cardiac CT", "ultra-high-resolution CT".
• Analysis of studies published since January 2015, supplemented by clinical experience and case examples.

Main Results:

• Dual-source PCD-CT offers optimized dose efficiency, intrinsic spectral sensitivity, and ultra-high-resolution capabilities.
• It shows potential for improved image quality or reduced radiation dose in cardiovascular protocols, particularly for challenging patient groups.
• Spectral sensitivity aids in reducing metallic artifacts and contrast agent doses.

Conclusions:

• PCD-CT demonstrates technical feasibility for non-invasive cardiac diagnostics, potentially expanding CT's scope.
• Challenges include cost, data volume, reconstruction time, and integrating spectral sensitivity with ultra-high resolution.
• Prospective randomized studies with clinical endpoints are essential to validate its advantages and guide evidence-based clinical integration.