AUTOMATIC BRAIN DOSE ESTIMATION IN COMPUTED TOMOGRAPHY USING PATIENT DICOM IMAGES

被引：8
作者：
Gharbi, Souha [1 ]
Labidi, Salam [1 ]
Mars, Mokhtar [1 ]
机构：
[1] Univ Tunis EL Manar, Inst Super Technol Med Tunis, Lab Rech Biophys & Technol Med, 9 Ave Docteur Z Essafi, Tunis 1006, Tunisia
来源：
RADIATION PROTECTION DOSIMETRY | 2020年 / 188卷 / 04期
关键词：
ATTENUATION-BASED ESTIMATION; CANCER-RISK ESTIMATION; PART I. DEVELOPMENT; CT EXAMINATIONS; LENGTH PRODUCT; SIZE; VALIDATION; INDEX; SEGMENTATION; QUALITY;
D O I：
10.1093/rpd/ncaa006
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
This study aims to develop an Automatic Brain Dose Estimation (ABDE) methodology for head computed tomography examinations. The ABDE is to be applied first to an anthropomorphic Alderson phantom to obtain a Correction factor (C-f) between the ABDE and the direct absorbed brain dose using dosemeters positioned within the anthropomorphic phantom. Then, in order to estimate the correct brain dose for patient, the C-f was multiplied by the mean ABDE values for each patient. Results were compared to those registered with a mathematical simulation phantom using CT-Expo V 2.4 software. Results showed no significant difference between the correct ABDE values and the CT-Expo values with amean percent difference of 2.54 +/- 0.01%. In conclusion, ABDE yields a correct estimation of brain dose, taking into account the size and attenuation of the irradiated region. Thus, it is clinically recommended for accurate patient brain dose assessment.
引用
收藏
页码：536 / 542
页数：7
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