Related Experiment Video

Updated: Apr 4, 2026

Visualization of Low-Level Gamma Radiation Sources Using a Low-Cost, High-Sensitivity, Omnidirectional Compton Camera

Visualization of Low-Level Gamma Radiation Sources Using a Low-Cost, High-Sensitivity, Omnidirectional Compton Camera

Published on: January 30, 2020

The cadmium telluride photon counting sensor in panoramic radiology: gray value separation and its potential

Robert Langlais¹, Akitoshi Katsumata², Sudeshni Naidoo³

¹Professor Emeritus, University of Texas Health Science Center Dental School and CEO Emeritus Enterprises, San Antonio, TX, USA.

Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology

|September 2, 2015

Abstract

Objective:

To investigate whether bone mineral density can be evaluated more accurately using a panoramic device with a new cadmium telluride photon-counting sensor and software than 2 panoramic devices with a conventional semiconductor sensor.

Study Design:

A fiduciary test object with several known levels of hydroxy apatite mineral concentration was placed in a phantom on the mandibular occlusal plane. Panoramic images were acquired by changing the position of the test object within the dental arch. The gray value, the spectrum deformation index (SDI), and the relative attenuation index (RAI) of the test object were evaluated. The SDI and RAI represent unique energy information as acquired by the QR-Master panoramic machine and the corresponding special QR-MC analysis software. In order to compare the values expressed in the different units (gray, SDI, and RAI values), the percentage discrepancy was calculated.

Results:

The cadmium telluride photon-counting fitted machine more consistently separated each of the hydroxy apatite concentrations in all of the different positioning configurations and locations. The SDI function of the QR Master machine produced more stable values than the RAI value and the gray values of the 2 conventional panoramic machines.

Conclusions:

The methodologies as developed for this study can be used to test more sophisticated analyses for the determination of bone density.

More Related Videos

High Spatial Resolution Chemical Imaging of Implant-Associated Infections with X-ray Excited Luminescence Chemical Imaging Through Tissue

High Spatial Resolution Chemical Imaging of Implant-Associated Infections with X-ray Excited Luminescence Chemical Imaging Through Tissue

Published on: September 30, 2022

3D Imaging of Soft-Tissue Samples using an X-ray Specific Staining Method and Nanoscopic Computed Tomography

3D Imaging of Soft-Tissue Samples using an X-ray Specific Staining Method and Nanoscopic Computed Tomography

Published on: October 24, 2019

Related Concept Videos

Determination of Crystal Structures

Determination of Crystal Structures

In the late 1800s, the revelation that light extended beyond visible wavelengths led to the discovery of X-rays by Wilhelm Roentgen. Recognized as high-energy electromagnetic radiation with short wavelengths, X-rays prompted exploration into their interaction with crystals. Max von Laue proposed in 1912 that the periodic arrangement of atoms, ions, or molecules in crystals would cause them to diffract X-rays, a hypothesis confirmed through experiments with copper sulfate and zinc sulfide...

Articles linked to this work by shared authors, journal, and citation graph.

Generating Findings for Jaw Cysts in Dental Panoramic Radiographs Using a GPT-Based VLM: A Preliminary Study on Building a Two-Stage Self-Correction Loop with a Structured Output (SLSO) Framework.

Diagnostics (Basel, Switzerland)·2026

Impact of image processing techniques on deep learning-based classification accuracy of cervical vertebral maturation.

Oral radiology·2026

A Logistic Regression Model for Predicting Osteoporosis Using Alveolar Bone Mineral Density Measured on Intraoral Radiographs Combined with Panoramic Mandibular Cortical Index.

Journal of clinical medicine·2025

Impacts of X-ray beam angulation and image receptor positioning on the quantification of alveolar bone mineral density using intraoral radiographic technique.

Oral radiology·2025

Detection and dual-label classification of tooth number and condition in dental panoramic radiographs including deciduous teeth.

Radiological physics and technology·2025

Evolutionary Implications of the Human Soleus Muscle Based on the Comparative Anatomy of Detailed Intramuscular Nerve Distribution Patterns in Primates.

Journal of morphology·2025

See all related articles