• Title/Summary/Keyword: 흉부방사선

Search Result 838, Processing Time 0.031 seconds

A Study on the Using of Automatic Exposure Control in the Chest Radiography (흉부 방사선검사에서 자동노출제어 사용에 관한 연구)

  • Choi, Sung-Sik;Lim, Cheong-Hwan;Jung, Sung-Hoon
    • Journal of radiological science and technology
    • /
    • v.42 no.1
    • /
    • pp.19-24
    • /
    • 2019

  • For general radiological examinations, even in the same area and the same test, the test conditions must be set differently according to the patient. However, since it is impossible to consider the body shape and conditions of patients every time in medical institutions where various patients visit, the tests are conducted by setting the AEC which automatically sets the test conditions. AEC is most commonly used in chest radiography. Therefore, the purpose of this study is to propose the improvement plans for using AEC by measuring the exposure dose and evaluating the image quality according to whether the AEC is used or not, and to provide basic data for AEC research. In the present study, images were acquired while varying tube voltage and test distance according to the use of AEC in chest radiography. The radiation dose was measured by placing the dosimeter in front of the chest phantom, and the CNR and SNR of acquired images were analyzed using Image J. The t-test was conducted for the statistical analysis and the significance was determined at the level of 95%(p<.05). As a result of this study, in the inspection distance (100cm, 140cm, 180cm) according to the use of AEC, high doses were observed when the AEC was used and there was statistically significant difference(p<.05). In the t-test to determine the difference between CNR and SNR depending on whether AEC was used or not, there was no significant difference according to the use of AEC(p>.05). Therefore, when performing chest radiography, if the radiologist establishes the appropriate examination conditions and conducts the examination by not just relying solely on AEC, it may be possible to reduce unnecessary radiation exposure to the patient.

  • https://doi.org/10.17946/JRST.2019.42.1.19 인용 PDF KSCI

Diagnosis with Ultrasound for Rib Fractures in the Golf (골프 운동중 발생한 늑골 골절의 초음파 진단)

  • Lim, Che-Joon;Youn, Te-Hyun;An, Ki-Yong
    • Journal of Korean Orthopaedic Sports Medicine
    • /
    • v.7 no.1
    • /
    • pp.50-54
    • /
    • 2008

  • Purpose: In most cases, the main cause of chest or back pain during playing golf is rib fractures. This kind of rib fractures can be easily overlooked in plain radiographs. The purpose of this article is to clarify the value of the ultrasound in detecting rib fractures. Materials and Methods: We compared the findings of chest-X rays (anteroposterior, left or right lateral, both oblique view) with those of the ultrasound in 56 patients between the ages of 20th & 60th who were diagnosed rib fractures. Their chief complaints were chest or back pain which developed during playing golf. The results were analyzed statistically. Results: Among 56 cases of rib fractures, 34 cases were diagnosed with initial X-rays. 51 cases were diagnosed with ultrasound. The sensitivity of radiograph and ultrasound were 60.71% & 91.07%, respectively. Dignosis was ultrasound with statical significance whereas radiography did not(p=0.0004). Conclusion: It was concluded that ultrasound is a valuable tool in the diagnosis of the rib fractures which were undetected with X-rays during playing golf.

  • PDF

Evaluation of Effectiveness of New Design Lead Apron during Pregnant X-ray Chest P-A (임산부 흉부 촬영중 사용할 새로 디자인된 납치마의 효율성 평가)

  • Kim, Hyeonggyun;Kwon, Soonmu;Jung, Hongmoon
    • Journal of the Korean Society of Radiology
    • /
    • v.6 no.6
    • /
    • pp.441-445
    • /
    • 2012

  • X-ray Chest P-A is very important and basic diagnosis examination for pregnant women. For a pregnancy period pregnant women should be treated very carefully not to be exposed to any radiation which might cause harmful damage to women and babies as well. Lead apron is one of the effective methods to protect pregnant women from the X-ray radiation. However, it is difficult to obtain the accurate position of pregnant women during X-ray Chest P-A since conventional lead apron method forces pregnant women to hold the apron by themselves only to make pregnant women very uncomfortable and hard to maintain accurate position during radiation. As a consequence, it is common to get low quality images of X-ray Chest P-A due to the overlap of apex of lung and scapular. In order to fix this problem, we made new design lead apron that allowed pregnant women to be more comfortable to maintain accurate position during X-ray Chest P-A position. Finally, with this new design lead apron, it was possible to get the best optimized images of X-ray Chest P-A of pregnant women by minimizing overlapping apex of lung and scapular.

  • https://doi.org/10.7742/jksr.2012.6.6.441 인용 PDF KSCI