| Autor: |
Peng, Gang, Zeng, Yongming, Luo, Tianyou, Zhao, Feng, Peng, Shengkun, You, Renqiang, Tan, Hua, Liu, Xiao, Wang, Jie |
| Předmět: |
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| Zdroj: |
Radiation Protection Dosimetry; Jul2012, Vol. 150 Issue 4, p292-297, 6p |
| Abstrakt: |
The authors measured organ radiation doses during multi-slice computed tomography (MSCT) chest scans using a China Sichuan anthropomorphic phantom (CDP-1C). Chest CT images from live volunteers based on automatic tube current modulation (ATCM) techniques were similar to those obtained using the CDP-1C phantom, indicating that the phantom accurately modelled the anatomic structure and X-ray absorbance of the human torso. Indeed, attenuation values differed by <5 %. Organ radiation doses were measured using thermoluminescence dosemeters in the CDP-1C. With increased noise index, the CT dose index, the dose-length product and the average organ dose all decreased. Thus, the CDP-1C phantom can also assess dose levels during CT examinations in Chinese patients. The noise index (based on ATCM techniques) should be set to 8.5 or higher to reduce X-ray exposure while maintaining appropriate resolution for diagnosis. [ABSTRACT FROM PUBLISHER] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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