Informatics Publishing Limited

Jeung Seung-Woon ¹, Lim Cheong-Hwan ¹, Joo Young-Cheol ¹

Affiliations
1 Department of Health Care, Hanseo University, Chungcheongnam-do Province, KR

Abstract

As the frequency of use of VDT has increased in the hospitals, related diseases have been found to occur. Especially among the radiologists who perform 3D operations, there has been a gradual increase in the number of reported cases of VDT diseases. Hence, this study performed surveys among radiologists working in the area of 3D processing operations in MRI rooms, CT rooms, PACS rooms, and radiation oncology treatment planning offices to determine the symptoms and work conditions of radiologists suffering from VDT syndrome. It was also found that work environment related characteristics had an effect on VDT syndrome (p<0.05). In the correlation analysis between general characteristics and work environment related characteristics of radiologists suffering from VDT syndrome, it was found that both showed a positive correlation. A positive correlation was only observed in the questions on how 3D operation affected health (p<0.05). In this study, the following result was obtained: There is a need for promotion and education to prevent VDT syndrome symptoms in order to improve the problems related to the work environment of 3D processing workspace.

Keywords

3D Processing, MRI Rooms, Radiation Treatment Planning, Radiologists, VDT Syndrome

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Lim Sang-Wook ¹, Lim Cheong-Hwan ¹

Affiliations
1 Department of Health Care, Hanseo University, Seosan, KR

Abstract

Background/Objectives: In this study, the outer diameter of the detachable coil used for cerebral aneurysm coil embolization was evaluated objectively through quantitative analysis. Methods/Statistical Analysis: Out of the helical shape coils from three companies that had failed coil embolization from January 2012 to May 2015, the outer diameter of 120 coils (20 from each company) with the diameter of 1.5 mm, and 2.0 mm were measured with an optical microscope and compared with the outer diameter of the coil before insertion. Findings: For the coils from all three companies, there were not any significant changes for the outer diameter after keeping the coils in a water bath at 37℃ for 10 and 20 minutes, respectively. For the 1.5 mm sized coils, the average outer diameters before insertion were 1,860μm for coils from company S, 1,530μm for C and 1,554μm for M. Similarly, for the 2.0 mm sized coils, the averages were 2,372μm for company S, 2,038μm for C, and 2,056μm for M, which were larger than the sizes proposed by the companies. After failure, the average changes in outer diameter were 2,074μm for company S, 1,535μm for C and 1,558μm for M measured for the 1.5 mm sized coils, and 2,581μm for company S, 2,043μm for C, and 2,062μm for M among the 2.0 mm sized size coils. The change in the average was the largest for coils from company S, which showed a statistical significance (p<0.05). Also, the shorter the length of a given coil, the smaller the changes seen in the diameter. Application/Improvements: The coils from companies C and M maintained reproducibility; that is, they maintained the original shape after the insertion failure, and did not show significant changes in the outer diameter.

Keywords

Cerebral Aneurysm Coil Embolization, Coil Diameter, Detachable Coils, Reproducibility.

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Ji-Hoon Choi ¹, Lim Cheong-Hwan ¹, Huang Yuxin ¹

Affiliations
1 Department of Health Care, Hanseo University, Seosan, KR

Abstract

Background/Objectives: The image quality was degraded due to the image noise in accordance with the performance improvement of diagnostic DR system. This study aims to present and recommend the effect on an image when hospitalized patients undergo the examination without wearing an examination gown in the chest PA test using radiography. Methods/Statistical Analysis: The experiment in this study was conducted by using the DR system of DK Company. In regard to the comparison experiment between the patient gown and the examination gown, Thorax Phantom was utilized. The Phantom specification is RS-111. The image was obtained by utilizing AEC by varying the dose (mAs) and tube voltage (kVp) while putting both the patient gown and the examination gown on the phantom. Then, the gray value of the obtained image was measured based on the 7 points that were to measure the density at the Japan Anti-Tuberculosis Association through the Image J program. Findings: In the case of descriptive statistics, it was found that there was only a small number of the factors that inhibited the quality of an image because the examination gown was closer to the mean value of phantom than the patient gown on the basis of the phantom. As for the analysis in relation to the measurement area, there was a significant difference at the 2 point spot and the 7 point spot in relation to the patient gown and examination gown of phantom in accordance with the tube voltage. As for the correlation analysis, there was a significant difference between the phantom, the patient gown and the examination gown. Hence, there was a relationship between these three groups. The most influencing factor of the DR development is the patient gown or the examination gown. Application/Improvements: It is believed that it would be possible to enhance the quality of an image by conducting an examination with the examination gown and comparing it with the patient gown in the radiography lab.

Keywords

Artifact, Chest PA, DR System, Gray Value.

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