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KMID : 0357520170400010001
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Journal of Radiological Science and Technology
2017 Volume.40 No. 1 p.1 ~ p.6
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Analysis of Image Quality According to BMI of Digital Chest Radiography: Focusing on Bureau of Radiological Health Evaluation
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Jin Seong-Jin
Im In-Chul
Cho Ji-Hwan
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Abstract
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Visual evaluation of chest radiograph images is the most practical and effective method. This study compared the Body Mass Index, waist circumference, and mAs with chest radiographs of 351 women. The Bureau of Radiological Health method was used to evaluate the image quality of chest X-ray images by anatomical and physical methods. The average age of the subjects was 30.17±4.73 and the average waist circumference was 66.91±4.67 cm. The mean Body Mass Index value was 20.21±2.23, the mean value of mAs was 3.04±0.78, and the mean value of Bureau of Radiological Health was 79.83±8.45. When the Body Mass Index value increased, waist circumference and mAs mean value increased. The mean value of Body Mass Index was statistically significant(p<0.05) in Group 4 compared to Groups 1 and 2, with increasing Body Mass Index. Exposure control of the automatic exposure control system is considered to be well performed according to body thickness or Body Mass Index at the time of chest radiography. As the Body Mass Index increases, the thickness of the body increases and the breast thickness of the woman also increases. Therefore, it is considered that the exposure amount is changed by the automatic exposure control device to affect the image quality.
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KEYWORD
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Chest radiography , Body Mass Index(BMI) , mAs , Bureau of Radiological Health(BRH) , Image quality
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