|
KMID : 0357520160390030407
|
|
Journal of Radiological Science and Technology
2016 Volume.39 No. 3 p.407 ~ p.414
|
|
|
Study on Exposure Dose According to Change of Source to Image Distance and Additional Filter Using Abdomen Phantom
|
|
Kim Ki-Won
Son Jin-Hyun
|
|
|
Abstract
|
|
|
|
This study is to minimize the patient dose and maintain the image quality according to change of source to image receptor distance and applying additional filter. In this study, we used the DR system, the tissue-equivalent abdomen phantom and the aluminium filter. The exposure conditions were set to 80 kVp using AEC mode. The collimation size was 16 ×16 inch. The exposure dose were measured 10 times when the SID was changed with 100, 110, 120 and 130 cm, respectively. The pirana 657 for dosimeter was located on center of radiation irradiation. The acquired images were analyzed by using the image J. In the results, the tube current was increased with increasing the SID but ESD was decreased with increasing the SID. The decrease of ESD attribute to use of filter that remove the photon of lower energy. In the histogram results using image J, there were differences between the ESD and the exposure conditions according to change of SID. However, there were not differences in histogram. Therefore, the exposure dose could reduced when set the longer SID. For pediatric exam, the exposure dose could reduced when used the aluminium filter.
|
|
|
KEYWORD
|
|
|
Dose Area Product Meter (DAP), semiconductor dosimeter
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|
|