Development and evaluation of photon-counting Cd0.875Zn0.125Te0.98Se0.02 detector for measuring bone mineral density

J. Byun, Y. Kim, J. Seo, E. Kim, K. Kim, A. Jo, W. Lee, B. Park

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Cadmium zinc telluride (CZT) has been actively researched and developed by researchers in various fields. In medical applications, especially photon-counting, CZT enables improved image quality, multi-material decomposition, and improved dose efficiency. Moreover, band gap engineering and selenium addition on CZT improved electrical, spectroscopic and structural properties, thereby supporting performance of CZT as a photon-counting detector. In this study, it is shown that Cd0.875Zn0.125Te0.98Se0.02 (CZTS) shows sufficient performance without loss of detection efficiency. We carried out a study involving the application of this CZTS on calculating bone mineral density (BMD) values, because this application has a novelty of new material for BMD sensor which follows the CdTe- or CdZnTe- based BMD detector. Anatomical images from different energy bins contained different information of attenuation although the images were taken in the same region at the same time. Moreover, calculated BMD values had a proper tendency depending on the amount of bone in that region. The final BMD value was 1.1972 g/cm2, which is close to the real value of 1.2 g/cm2. The introduction with a bone filter and a smaller pixel size will improve the accuracy and precision of photon-counting CZTS detectors for measuring BMD values. However, in this study the CZTS showed the feasibility that a photon-counting CZTS detector can help the measurement of BMD values and the diagnosis of osteoporosis.

Original languageEnglish
Pages (from-to)245-253
Number of pages9
JournalPhysical and Engineering Sciences in Medicine
Volume46
Issue number1
DOIs
Publication statusPublished - 2023 Mar

Bibliographical note

Publisher Copyright:
© 2022, Australasian College of Physical Scientists and Engineers in Medicine.

Keywords

  • Bone mineral density
  • CdZnTeSe
  • Photon-counting detector

ASJC Scopus subject areas

  • Biotechnology
  • Radiological and Ultrasound Technology
  • Biophysics
  • Biomedical Engineering
  • Instrumentation
  • Radiology Nuclear Medicine and imaging

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