Related Experiment Video
Updated: Sep 19, 2025

A Whole Body Dosimetry Protocol for Peptide-Receptor Radionuclide Therapy PRRT: 2D Planar Image and Hybrid 2D+3D SPECT/CT Image Methods
Published on: April 24, 2020
A dosimetry measurement on head and neck sensitive organs during CT scan, a comprehensive study
Amir Reza Khoshhal1, Ahmad Esmaili Torshabi1, Mehdi Zehtabian2
1Faculty of Sciences and Modern Technologies, Graduate University of Advanced Technology, Kerman, Iran.
None:
The increasing use of Computed Tomography (CT) significantly aids in diagnosing various diseases. However, patient radiation exposure remains a major concern. This study presents experimental dosimetry measurements of the radiation dose received by sensitive organs in the head and neck region during CT imaging with a Canon CT scanner using scan parameters of 135 kV, 150 mA, 6.6 s, and 5 mm slice thickness. Calibrated GR-200 Thermoluminescent Dosimeters (TLDs) were used to measure the absorbed doses at various points on a Rando phantom. A total of 84 TLDs were used for: the occipital (24) and temporal lobes (24), the thalamus (12), the hypothalamus (6), right parotid gland (4), eyes (4) and for background dose measurement (10). The absorbed doses were found to be 23.84 mGy for the occipital lobe, 23.11 mGy for the temporal lobe, 22.81 mGy for the hypothalamus, 22.94 mGy for the thalamus, 17.63 mGy for the left eye, 17.08 mGy for the right eye, and 28.08 mGy for the right parotid gland. The highest and lowest doses were observed in the right parotid gland and eyes, respectively. This study provides valuable insights for clinicians and radiologists, understanding the risk of overexposure with a quantitative vision in sensitive head and neck organs during scanning especially in pediatric and repeat-scan cases.
More Related Videos
08:36Multi-Tracer Studies of Brain Oxygen and Glucose Metabolism Using a Time-of-Flight Positron Emission Tomography-Computed Tomography Scanner
Published on: June 7, 2024
06:33Construction of a Preclinical Multimodality Phantom Using Tissue-mimicking Materials for Quality Assurance in Tumor Size Measurement
Published on: July 29, 2013
Related Concept Videos
Computed Tomography
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
Imaging Studies for Cardiovascular System V: CT
Imaging Studies I: CT and MRI
Description of the Procedures
Computed Tomography (CT) scan:
Computed Tomography (CT) scans use X-ray technology to generate detailed images of bones, organs, and tissues. During the scan, the patient lies on a moving table...
Radiological Investigation I: X-ray and CT
Imaging Studies III: Computed Tomography
Imaging Studies II: Positron Emission Tomography and Scintigraphy
Fundamental Principles of PET