복부 팬텀영상에서 장비별 피폭선량 및 노이즈 비교
A Noise and Quantity of Exposed Ray for Abdominal Phantom Image
0
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
This research is to compare noise and quantity of exposed ray at abdomen with two medical equipment company, GE and Siemens. As well as figuring out which one has high or low quantity of exposed ray and advantages of each equipment in certain areas. This research used SIEMENS (Somatom Definition Flash, Germany) and GE (Discovery CT 750 HD, USA) in ‘C’ University as CT equipments. For dummy, this research used Rando phantom (Art-20x fluke biomedical, USA) in condition of care dose 4D and care Kv System with Siemens and GE respectively. For slice thickness, this research used 3 mm for Siemens and 3.75 mm for GE and scanned abdomen 4 times with same FOV 38 cm and 80, 100, 120, 140 kVp. This research is to figure out correlation between noise and quantity of rays from changes of tube voltage in each company’s equipment for abdominal phantom. Also this paper got the results that average value of noise decreases and values of CTDlvol and DLP increases by increasing tube voltage to 80, 100, 120, 140 kVp respectively. From above research, there is a difference in quantity of ray for patients by type of equipment, even scanning same area. Therefore, there should be appropriate management criteria. With this perception, the limitation of this research used only two different companies’ equipment and used standardized phantom that excludes different characteristics by each patient. To increase quality of image with decreasing unnecessary quantity of rays, there should be additional technology development.
Abstract
This research is to compare noise and quantity of exposed ray at abdomen with two medical equipment company, GE and Siemens. As well as figuring out which one has high or low quantity of exposed ray and advantages of each equipment in certain areas. This research used SIEMENS (Somatom Definition Flash, Germany) and GE (Discovery CT 750 HD, USA) in ‘C’ University as CT equipments. For dummy, this research used Rando phantom (Art-20x fluke biomedical, USA) in condition of care dose 4D and care Kv System with Siemens and GE respectively. For slice thickness, this research used 3 mm for Siemens and 3.75 mm for GE and scanned abdomen 4 times with same FOV 38 cm and 80, 100, 120, 140 kVp. This research is to figure out correlation between noise and quantity of rays from changes of tube voltage in each company’s equipment for abdominal phantom. Also this paper got the results that average value of noise decreases and values of CTDlvol and DLP increases by increasing tube voltage to 80, 100, 120, 140 kVp respectively. From above research, there is a difference in quantity of ray for patients by type of equipment, even scanning same area. Therefore, there should be appropriate management criteria. With this perception, the limitation of this research used only two different companies’ equipment and used standardized phantom that excludes different characteristics by each patient. To increase quality of image with decreasing unnecessary quantity of rays, there should be additional technology development.
참고문헌 (15)
- Dawson P, "Patient dose in multi-slice CT: Why is it increasing and does it matter?", Br. J. Radiol., 77(1), pp.S10~S13 (2004)[DOI]
- 구현우, "소아 CT 방사선량에 대한 이해와 영상기법의 최적화", 대한영상의학회지, 52(1), pp.1~5 (2005), 대한영상의학회
- Hu H, "Four multidetector-row-helical CT: image quality and volume coverage speed", Radiology, 215(1), pp.55~62 (2000)[DOI]
- ICRP, "Managing Patient Dose in MultiDetector Computed Tomography (MDCT)", ICRP Publication 102. Pergamoon Press, ~ (2006)
- Kalra MK, "Strategies for CT radiation dose optimization", Radiology, 230(3), pp.619~628 (2004)[DOI]
- Kim YH, "Patient exposure doses from medical x-ray examinations in Korea", J. Radiol. Sci. Technol., 28(3), pp.241~248 (2005)
- 권성욱, "MDCT 검사에서 환자 체중을 이용한 선량 평가", 의학물리, 21(3), pp.246~252 (2010), 한국의학물리학회
- Lee CI, "Diagnostic CT scans: assessment of patient, physician, and radiologist awareness of radiation dose and possible risks", Radiology, 231(2), pp.393~398 (2004)[DOI]
- 문일봉, "CT 검사 시 관전류 자동조절기법이 선량에 미치는 영향", 방사선산업학회지, 10(2), pp.49~54 (2016), (사)한국방사선산업학회[DOI]
- 문일봉, "MDCT에서 절편두께에 따른 Noise 측정", 방사선산업학회지, 11(3), pp.151~155 (2017), (사)한국방사선산업학회[DOI]
- 문일봉, "MDCT에서 관전압 변화에 따른 노이즈와 선량의 변화", 공학기술논문지, 7(4), pp.175~178 (2014), 공학기술연구원
- Schaller S, "Spatial domain filtering for fast modification of the tradeoff between image sharpness and pixel noise in computed tomography", IEEE Trans. Med. Imaging, 22(7), pp.846~853 (2003)[DOI]
- Wang Q, "The application of automatic tube current modulation (ATCM) on image quality and radiation dose at abdominal computed tomography (CT): A phantom study", J. Xray Sci. Technol., 21(4), pp.453~464 (2013)
- Yates SJ, "Effect of mul-tislce scanners on patient dose from routine CT examinations in East Anglia", Br. J. Radiol., 77(918), pp.472~478 (2004)[DOI]
- Yoo HJ, "Radiation Dose and Image Quality in Neck Angiography: Comparison of Dual Source Computed Tomography and Multi-detector Computed", J. Kor. Soc. Comput. Tomogr. Technol., 12(2), pp.27~32 (2010)