Browse > Article
http://dx.doi.org/10.5392/JKCA.2015.15.05.436

Development of Self-Diagnosis Linearity Quality Assurance Technique in Computed Tomography by Using Iodic Contrast Media  

Seoung, Youl-Hun (청주대학교 방사선학과)
Publication Information
The Journal of the Korea Contents Association / v.15, no.5, 2015 , pp. 436-443 More about this Journal
Abstract
The purpose of this study was to develop a self-diagnostic linearity quality control techniques of computed tomography (CT) by using measured CT number values from the various concentrations of iodine contrast media (CM) is diluted with distilled water under each condition of the tube voltage. The equipment was used for four-channel MDCT, the iodine concentration were using 300 mgI/ml, 350 mgI/ml, 370 mgI/ml and 400mgI/ml. Dilution of CM in distilled water was increased by each 5% until the maximum CT number values were measured. We applied the tube voltages for 90 kVp, 120 kVp, 140 kVp. As a result, we was obtained to the nearest linearity as 0.993 of correlation coefficient between the iodinated CM from 5% to 25% in 400 mgI/ml and the CT number values by 90 kVp. In conclusion, the proposed self-diagnostic linearity quality assurance technique by using iodine CM can be utilized to replace the AAPM CT performance phantom.
Keywords
Iodine Contrast Media; Computed Tomography; Linearity; Quality Control;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
연도 인용수 순위
1 Korea Food and Drug Adminstration, Guideline of Patients Eose in CT Examination, Series of Radiation Safty, Vol.19, pp.8-9, 2009.
2 J. Radon, "On the Determination of Functions From Their Integral Values Along Certain Mainfolds," IEEE Transactions on Medical Imaging, Vol.MI-5, No.4, 1986.
3 보건복지부, 특수의료장비의 설치 및 품질관리에 관한 규칙, 보건복지부령 386호, 2007.
4 J. T. Payne, E. C. McCullough, T. Stone, E. Gedgaudas, "Acceptance Testing of a Computerized Tomographic Scanner," Opt Engr, Vol.16, No.1, pp.28-31, 1977.
5 J. I. Choi, D. G. Na, H. H. Kim, Y. M. Shin, K. J. Ahn, and J. Y. Lee, "Quality control of medical imaging," J Korean Radiol Soc, Vol.50, No.5, pp.317-331, 2004.   DOI
6 K. J. Jang and D. C. Kweon, "Case Study of Quality Assurance for MDCT Image Quality Evaluation Using AAPM CT Performance Phantom," J Korean Conten Soc, Vol.7, No.7, pp.114-123, 2007.
7 M. L. Bouxsein, S. K. Boyd, B. A. Christiansen, R. E. Guldberg, K. J. Jepsen, and R. Muller, "Guidelines for assessment of bone microstructure in rodents using micro-computed tomography," J Bone Miner Res, Vol.25, No.7, pp.1468-1486, 2010.   DOI
8 AAPM Report No 1, Phantoms for performance evaluation and quality assurance of CT scanners, American Association of Physicists in Medicine, Chicago, IL, USA, 1997.
9 J. M. Goo, "Clinical Efficacy of Pamiray？ as a Nonionic Intravenous Contrast Material for Abdominal CT," J Korean Radiol Soc, Vol.49, No.3, pp.197-201, 2003.   DOI
10 W. Yoichi, "Derivation of linear attenuation coefficient from CT numbers for loe-energy photons," Phy Med Biol, Vol.44, pp.2201-2211, 1999.   DOI   ScienceOn
11 한동균, 김문찬, "전산화단층촬영 장치에서의 Contrst scale과 Linearity의 평가방법 및 현황조사", 대한전산화단층기술학회, 제5권, 제1호, pp.120-127, 2003.
12 B. S. Kang, K. M. Lee, W. Y. Shim, S. C. Park, H. D. Choi, and Y. K. Cho, "Analyze for the Quality Control of General X-ray Systems in Capital region," J Korean Society of Radiological Technology, Vol.35, No.2, pp.93-102, 2012.
13 C. S. Jeong and C. H. Lim, "The Study On Quality Control of Magnetic Resonance Imaging System," J Korean Conten Soc, Vol.9, No.6, pp.178-186, 2009.
14 S. W. Lee, H. J. Kim, T. H. Kim, S. J. Jo, and C. L. Lee, "Estimation and Application of HU Values for Various Materials as a Function of Physical Factor," Korean J Med Phys, Vol.20, No.3, pp.145-151, 2009.
15 W. K. Moon, T. J. Kim, J. H. Cha, K. S. Cho, E. W. Choi, Y. J. Lee, M. H. Kim, B. K. Han, Y. H. Choe, E. K. Kim, H. Y. Choi, S. Y. Chung, S. Y. Chung, N. Cho, J. G. Im, and K. M. Yeon, "Clinical Image Evaluation of Mammograms: A National Survey," J Korean Radiol Soc, Vol.49, No.6, pp.507-511, 2003.   DOI
16 Y. Yamashita, Y. Komohara, M. Takahashi, M. Uchida, N. Hayabuchi, T. Shimizu, and L. Narabayashi, "Abdominal helical CT: evaluation of optimal doses of intravenous contrast material-a prospective randomized study," Radiology, Vol.216, No.3, pp.718-723, 2000.   DOI   ScienceOn
17 S. J. Thomas, "Relative electron density calibration of CT scanners for radiotherapy treatment planning," Br J Radiol, Vol.72, No.860, pp.781-786, 1999.   DOI
18 J. Nosil, K. I. Pearce, and R. A. Stein, "Linearity and contrast scale control in computed tomography," Med. Phys, Vol.16, No.1, pp.110-113, 1989.   DOI   ScienceOn
19 D. H. Kim, K. H. Kim, J. Y. Chung, and H. J. Cho, "The change of CT number in the sylinge by pouring order of the contrast medium and saline," J Korean Society of Computed Tomographic Technology, Vol.9, No.1, pp.145-148, 2007.