TECHNICAL REPORT Why Philips6 May 2026 11:04
TECHNICAL REPORT
Why Philips Chose Not to Commercialize
Photon-Counting CT:
A Technical Analysis of Strategic, Material, and Engineering Factors
Rad Detect AI - Radiation Detection & Photon-Counting Detector Consulting
www.rad-ai.org
March 2026
(First Paragraph of 11 page doc)
Executive Summary
Philips Healthcare developed a fully functional spectral photon-counting CT (SPCCT) prototype based on cadmium zinc telluride (CZT) detectors, demonstrating impressive clinical results in cardiac, vascular, and thoracic imaging. Despite this technical achievement, Philips made a strategic decision not to commercialize this technology, instead doubling down on their dual-layer spectral detector platform (IQon, Spectral CT 7500, and now Verida).
This report examines the technical, material science, manufacturing, and commercial factors behind this decision. The analysis draws on published clinical research, Philips' own statements, and fundamental physics of CZT-based photon-counting detectors to provide a balanced perspective on why a company with a working prototype chose an alternative path.
Key finding: The decision was not primarily about whether photon-counting CT works - it clearly does. Rather, it reflects the practical challenges of manufacturing CZT detectors at clinical CT scale, the maturity and proven track record of Philips' existing dual-layer spectral technology, and a calculated assessment that the incremental clinical benefit of photon-counting may not justify the added complexity and cost for most clinical workflows.