Comparing Raw Data and DICOM Data According to Use Duration of Digital Radiography System
Sung-Hun Jeoung1, Chung-Hwan Lim2, Kil-Soo Ra3
1Sung-Hun Jeoung Department of Radiology, Seosan Jung-Ang Jeneral Hospital, Seosan-Si, Republic of Korea, East Asian.
2Chung-Hwan Lim Department of Health Care, Hanseo University, Seosan-Si, Republic of Korea, East Asian.
3Kil-Soo Ra Department of Health Care, Hanseo University, Seosan-Si, Republic of Korea, East Asian.
Manuscript received on 10 June 2019 | Revised Manuscript received on 17 June 2019 | Manuscript Published on 22 June 2019 | PP: 833-837 | Volume-8 Issue-8S2 June 2019 | Retrieval Number: H11400688S219/19©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open-access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: With changes in diagnostic radiation generatin g apparatus, digital radiography (DR) systems are conti nuously increasing. The objective of this study was to c ompare Raw data and DICOM data according to the u se period of DR system. In addition, this study conduc ted a constancy experiment in Korea for the first time. Based on measured value of the consistency test, it wa s measured after calibration for 1month and 4 months. Image quality change with time was then observed. A nalysis of MTF curve was carried out with spatial reso lutioninter section of MTF 10% and the curve was eval uated. Sharpness ratings were evaluated at the intersecti on of MTF 50% and the curve. Information transmissi on ability was measured up to 1.0-3.0lp/㎜.Constancy t est results showed that the Raw data information trans mission ability was 1.0lp/㎜ 92%, 2.0lp/㎜ 79%, 3.0lp/ ㎜ 63%, MTF 10% 5.4lp/㎜, and MTF 50% 3.9lp/㎜. DICO Mdata information transmission ability was 1.0lp/ ㎜ 94%, 2.0lp/㎜ 74%, 3.0lp/㎜ 63%, MTF 10% 5.1lp/ ㎜, and MTF 50% 3.7lp/㎜. In results of calibration af ter 1month and 4 months, based on constancy test val ue, the image quality decreased with time. It was mea sured higher than 1month and 4 months after calibratio n. Radiologists responsible for medical imaging will be able to improve the quality of life of patients as well as the quality of medical service if they can fully un derstand the evaluation method according to change of image and maintain medical image consistently.
Keywords: Constancy test, Raw Data, DICOM Data, MTF, Calibration
Scope of the Article: Wireless Multimedia Systems