NEW IN-VIVO CALIBRATION PHANTOMS AND THEIR PERFORMANCE
| Autor: | Jun Takada, Masaharu Hoshi, I. Shimizu, N. Sugiura, Masafumi Uchiyama, Satoru Endo, Toshiso Kosako, Tetsuo Ishikawa |
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| Rok vydání: | 2002 |
| Předmět: |
Adult
Models Anatomic Epidemiology Body height Health Toxicology and Mutagenesis Potassium Radioisotopes Test object Body size Body weight Imaging phantom Calibration Humans Dosimetry Radiology Nuclear Medicine and imaging Child Mathematics Photons Radiotherapy Phantoms Imaging business.industry Body Weight Counting efficiency equipment and supplies Body Height body regions Cesium Radioisotopes Nuclear medicine business Biomedical engineering |
| Zdroj: | Health Physics. 82:348-357 |
| ISSN: | 0017-9078 |
| DOI: | 10.1097/00004032-200203000-00007 |
| Popis: | New in-vivo calibration phantoms (anthropometric phantoms) were developed to meet the needs for Japanese standard phantoms. Two important characteristics of these phantoms were that (1) they were designed using Japanese body size survey data, and (2) they were designed so that they can be adapted to various positions or geometries. The performance of these phantoms was tested with respect to body size, activity distribution along the axis, and counting efficiency. The actual dimensions of the anthropometric phantoms were compared with the survey data. Most items (31 of 47) indicated good agreement between the actual values and the survey data for the adult anthropometric phantom. The activity distribution for the anthropometric phantoms was compared with that for block phantoms that simulate a uniform activity distribution. The anthropometric phantoms have some gaps in their joints. The measurement results, however, indicated that these gaps did not significantly affect the overall accuracy of the measurements. Differences in counting efficiency between the block phantoms and the anthropometric phantoms for the same age were no more than 6%. |
| Databáze: | OpenAIRE |
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