Application of Single Photon Detector in Medical Imaging Technology

DOI

10.2991/978-94-6463-864-6_3How to use a DOI?

Keywords

Single Photon Detectors; Superconducting Nanowire Detectors; X-Ray Imaging; Quantum Parametric Mode Sorting

Abstract

In recent years, single photon detection technology has made a breakthrough in the field of medical imaging, and promoted the development of high sensitivity, low noise and high-resolution imaging systems. A new type of single photon detector (SPD) based on superconducting materials, wide band gap semiconductors and perovskites and its application in medical imaging are reviewed in this paper. Through the optimal design of the superconducting nanowire single photon detector (SNSPD), great sensitivity of photon detection has been achieved at 3.7 K operating temperature (system efficiency 14.1%). Additionally, a large detection area of 400 × 400 μm2 has been successfully realized through this design optimization. Gallium nitride (GaN)-based X-ray single photon detectors are designed with vertical p-i-n structure to reduce dark current to 7 pA (-200 V) and achieve linear response in the 10–20 keV energy spectrum. The perovskite single crystal X-ray detector maintains stability in the air for 1.5 years. The normalized signal-to-noise ratio is improved significantly through layer thickness optimization and zero bias operation. In addition, the innovative combination of quantum parametric mode sorting (QPMS) technology and photon-counting CT system achieves 94% classification accuracy at 500 times background noise and breaks traditional CT spatial resolution to 150 μm. These technological innovations provide new solutions for non-invasive blood flow monitoring, low-dose X-ray imaging, and high-precision tumor diagnosis, marking a key step toward high sensitivity, robustness, and multimodal fusion in medical imaging.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Ningyuan Zhang
PY  - 2025
DA  - 2025/10/23
TI  - Application of Single Photon Detector in Medical Imaging Technology
BT  - Proceedings of the 2025 2nd International Conference on Electrical Engineering and Intelligent Control (EEIC 2025)
PB  - Atlantis Press
SP  - 12
EP  - 20
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-864-6_3
DO  - 10.2991/978-94-6463-864-6_3
ID  - Zhang2025
ER  -