Related Experiment Video
Updated: Jul 13, 2026
11:25
Simultaneous Scalp Electroencephalography (EEG), Electromyography (EMG), and Whole-body Segmental Inertial Recording for Multi-modal Neural Decoding
Published on: July 26, 2013
Development of integrated whole body counter
1Department of Radiation Dosimetry, Research Center for Radiation Emergency Medicine, National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan. t-suzuki@nirs.go.jp
Radiation Protection Dosimetry
|August 4, 2007
Summary
A new integrated whole body counter with 10 germanium detectors was developed to improve nuclide identification. This system enhances accuracy for internal contamination monitoring in organs like lungs and liver.
Area of Science:
- Nuclear physics and instrumentation
- Medical physics and radiation detection
- Environmental monitoring and radiation safety
Background:
- Conventional whole body counters often use NaI(Tl) scintillators in scanning bed geometry.
- Limitations in nuclide identification and sensitivity exist with existing technologies.
- Need for improved accuracy in internal contamination assessment.
Purpose of the Study:
- To develop an integrated whole body counter (WBC) with enhanced nuclide identification capabilities.
- To improve the sensitivity and accuracy of internal contamination monitoring.
- To utilize advanced detector technology for comprehensive organ coverage.
Main Methods:
- Development of an integrated WBC system comprising 10 detectors.
- Utilized p-type arrayed planar HPGe detectors for lungs and coaxial HPGe detectors for the gastrointestinal tract.
- Employed n-type and p-type HPGe detectors for chest, thyroid, skull, liver, and kidney.
- Implemented an electric cooling system with adiabatic expansion for continuous operation and asphyxia prevention.
- Conducted efficiency calibration using JAERI and BOMAB phantoms for lung and trunk detectors, respectively.
Main Results:
- The integrated WBC system demonstrated improved nuclide identification compared to conventional methods.
- High-purity germanium (HPGe) detectors provided superior spectral resolution for various organs.
- The adiabatic expansion cooling system ensured stable detector performance and continuous operation.
- Calibration using specialized phantoms validated the system's efficiency and accuracy.
Conclusions:
- The developed integrated whole body counter offers superior performance for internal contamination monitoring.
- The use of multiple HPGe detectors allows for precise nuclide identification and quantification in different organs.
- This advanced system represents a significant improvement in radiation safety and monitoring applications.
