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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of the Korean Society of Radiology
Journal Basic Information
Journal DOI :
The Korean Society of Radiology (KSR)
Editor in Chief :
Volume & Issues
Volume 6, Issue 6 - Dec 2012
Volume 6, Issue 5 - Oct 2012
Volume 6, Issue 4 - Aug 2012
Volume 6, Issue 3 - Jun 2012
Volume 6, Issue 2 - Apr 2012
Volume 6, Issue 1 - Feb 2012
Selecting the target year
A Study on Radiologists' Awareness and Performance of Hospital Infection Prevention
Yeo, Jin-Dong ; Jeon, Byeong-Kyu ;
Journal of the Korean Society of Radiology, volume 6, issue 5, 2012, Pages 321~333
DOI : 10.7742/jksr.2012.6.5.321
The purpose of this study is to examine radiologists' awareness and performance of hospital infection control, providing basic information needed to improve and educate how to control hospital infection. The subjects' awareness and performance of hospital infection control were respectively 141.05 and 138.15 points in average score on a 150-point scale. In all sub-areas of the control, the higher the awareness was, the higher the performance was, but the latter was relatively lower than the former. Factors that were having statistically significant effects on that awareness included the necessity of infection control education, participation or non-participation in infection prevention education and recognition or non-recognition of patients' disease state. And factors that were having statistically significant influences on that performance included participation or non-participation in infection prevention education, recognition or non-recognition of patients' disease state and the foresaid awareness itself.
Analysis on infection control of general hospital radiology
Shin, Jung-Sub ; Park, Cheol-Woo ; Jeon, Byeong-Kyou ;
Journal of the Korean Society of Radiology, volume 6, issue 5, 2012, Pages 335~342
DOI : 10.7742/jksr.2012.6.5.335
This study aims to find a way to control infection of community radiology effectively by calculating the degree of contamination, culture and identifying the flora in radiology of five general hospitals in Gyeongsangbuk-do. Staphylococcus, Micrococcus, Pseudomonas stutzeri, Pseudomonas oryzihabitans were identified as surface flora. These are know to be pathogens of hospital acquired infection and there was no radiology-specific flora. Research subject hospitals were conducting similar infection control education but degree of contamination of each hospital showed significant difference. Difference in degree of contamination according to contact sources were analyzed by Contact sources were classified into technologist-using, patients-using and common-using materials. Analysis of each hospital's degree of contamination showed that patient-using materials were significantly more contaminated than technologist-using and common-using materials (p<0.001). Devices which are similar to each other in monthly average frequency of use showed no significant difference in degree of contamination, but general X-ray devices and chest boards which are used most frequently showed higher degree of contamination than others. In addition, hospital A, B and C which have heavier monthly average caseload showed relatively high degree of contamination on irradiation devices which are used by technologists only or by technologists and patients commonly, office desks and doorpulls. Hence it is considered that intensity of infection control education should be different according to the degree of monthly average caseload. This study provided an opportunity to aware that technologists' feeling of contamination is crucial for infection control of radiology, and the Accupoint ATP public hygiene monitoring system which was used in this study for measuring the degree of contamination was proved to be an effective measuring device for hospital acquired infection management.
Evaluation of the dose distribution in Mapcheck using Enhanced Dynamic Wedge
Kang, Su-Man ; Jang, Eun-Sun ; Lee, Byung-Koo ; Jung, Bong-Jae ; Shin, Jung-Sub ; Park, Cheol-Woo ;
Journal of the Korean Society of Radiology, volume 6, issue 5, 2012, Pages 343~349
DOI : 10.7742/jksr.2012.6.5.343
Intensity Modulated Radiotherapy (IMRT) is increasing its use recently due to its benefits of minimizing the dose on surrounding normal organs and being able to target a high dose specifically to the tumor. The study aims to measure and evaluate the dose distribution according to its dynamic changes in Mapcheck. In order to verify the dose distribution by EDW angle(
), field size (asymmetric field) and depth changes (1.5 cm, 5.0 cm) using IMRT in Clinac ix, a solid phantom was placed on the Mapcheck and 100MU was exposed by 6 MV, 10MV X-ray. Using a 6MV, 10MV energy, the percentage depth dose according to a dynamic changes at a maximum dose depth (1.5 cm) and at 5.0 cm depth showed the value difference of maximum 0.6%, less than 1%, which was calculated by a treatment program device considering the maximum dose depth at the center as 100%, the percentage depth dose was in the range between 2.4% and 7.2%. Also, the maximum value difference of a percentage depth dose was 4.1% in Y2-OUT direction, and 1.7% in Y1-IN direction. When treating a patient using a wedge, it is considered that using an enhanced dynamic wedge is effective to reduce the scattered dose which induces unnecessary dose to the surroundings. In particular, when treating a patient at clinic, a treatment must be performed considering that the wedge dose in a toe direction is higher than the dose in a heel direction.
Observation of Acoustic Characteristic Change in bubble cloud by Ultrasonic Cavitation
Noh, Si-Cheol ; Kim, Ju-Young ; Choi, Heung-Ho ;
Journal of the Korean Society of Radiology, volume 6, issue 5, 2012, Pages 351~356
DOI : 10.7742/jksr.2012.6.5.351
Ultrasonic cavitation is a physical phenomenon that generates and collapses microbubbles in media (mainly fluids) under conditions of strong ultrasonic irradiation. In this study, changes in the ultrasonic acoustic characteristics of bubble clouds in relation to ultrasonic irradiation were observed by the quantitative evaluation of cavitation yields. Concave-type single ultrasonic transducers with center frequencies of 500 kHz and 1.1 MHz were used to produce cavitation, and 2.25 MHz interference ultrasonic waves that would traverse any bubble clouds generated were used to analyze the cavitation. The parameters used for the evaluation of cavitation yields (changes in the center frequency, attenuation characteristics, and the propagation time of penetrating waves) were analyzed in relation to the cavitation-generating conditions (irradiation intensity, excitation signal, and center frequency). On the basis of these results, correlations between the changes in the center frequency and irradiation intensity were identified. Although the correlation coefficient was low, notable changes were observed in the center frequency under certain irradiation conditions. Attenuation trends in the interference ultrasonic waves showed high correlations with all the irradiation conditions, and it was noted that these trends were not affected by the forms of cavitation generated. No differences in the propagation time were observed among different irradiation conditions. These findings suggest that bubble yields can be quantitatively evaluated effectively by evaluating the diverse irradiation conditions and that such a quantitative evaluation could be used to study the basic cavitation phenomenon occurring in high-intensity ultrasonic wave treatment.
Evaluation of Image Noise and Radiation Dose Analysis In Brain CT Using ASIR(Adaptive Statistical Iterative Reconstruction)
Jang, Hyon-Chol ; Kim, Kyeong-Keun ; Cho, Jae-Hwan ; Seo, Jeong-Min ; Lee, Haeng-Ki ;
Journal of the Korean Society of Radiology, volume 6, issue 5, 2012, Pages 357~363
DOI : 10.7742/jksr.2012.6.5.357
The purpose of this study on head computed tomography scan corporate reorganization adaptive iteration algorithm using the statistical noise, and quality assessment, reduction of dose was evaluated. Head CT examinations do not apply ASIR group [A group], ASIR 50 applies a group [B group] were divided into examinations. B group of each 46.9 %, 48.2 %, 43.2 %, and 47.9 % the measured in the phantom research result of measurement of CT noise average were reduced more than A group in the central part (A) and peripheral unit (B, C, D). CT number was measured with the quantitive analytical method in the display-image quality evaluation and about noise was analyze. There was A group and difference which the image noise notes statistically between B. And A group was high so that the image noise could note than B group (31.87 HUs, 31.78 HUs, 26.6 HUs, 30.42 HU P<0.05). The score of the observer 1 of A group evaluated 73.17 on 74.2 at the result 80 half tone dot of evaluating by the qualitative evaluation method of the image by the bean curd clinical image evaluation table. And the score of the observer 1 of B group evaluated 71.77 on 72.47. There was no difference (P>0.05) noted statistically. And the inappropriate image was shown to the diagnosis. As to the exposure dose, by examination by applying ASIR 50 % there was no decline in quality of the image, 47.6 % could reduce the radiation dose. In conclusion, if ASIR is applied to the clinical part, it is considered with the dose written much more that examination is possible. And when examination, it is considered that it becomes the positive factor when the examiner determines.
The Usability Analysis of 3D-CRT, IMRT, Tomotherpy Radiation Therapy on Nasopharyngeal Cancer
Song, Jong-Nam ; Kim, Young-Jae ; Hong, Seung-Il ;
Journal of the Korean Society of Radiology, volume 6, issue 5, 2012, Pages 365~371
DOI : 10.7742/jksr.2012.6.5.365
The radiation therapy treatment technique is developed from 3D-CRT, IMRT to Tomotherapy. and these three technique was most widely using methods. We find out a comparison normal tissue doses and tumor dose of 3D-CRT, IMRT(Linac Based), and Tomotherapy on Head and Neck Cancer. We achieved radiological image used the Human model phantom (Anthropomorphic Phantom) and it was taken CT simulation (Slice Thickness : 3mm) and GTV was nasopharngeal region and PTV(including set-up margin) was GTV plus 2mm area. and transfer those images to the radiation planning system (3D-CRT - ADAC-Pinnacle3, Tomotherapy - Tomotherapy Hi-Art System). The prescription dose was 7020 cGy and measuring PTV's dose and nomal tissue (parotid gland, oral cavity, spinal cord). The PTV's doses was Tomotherapy, Linac Based - IMRT, 3D-CRT was 6923 cGy, 6901 cGy and 6718 cGy its dose value was meet TCP because its value was up to the 95% based on 7020 cGy, Nomal tissue (parotid gland, oral cavity, spinal cord) was 1966 cGy(Tomotherapy), 2405 cGy(IMRT), 2468 cGy(3D-CRT)[parotid gland], 2991 cGy(Tomotherapy), 3062 cGy(IMRT), 3684 cGy (3D-CRT)[oral cavity], 1768 cGy(Tomotherapy), 2151 cGy(IMRT), 4031 cGy(3D-CRT)[spinal cord] its value did not exceeded NTCP. All the treatment techniques are equated with tumor and nomal tissue doses. The 3D-CRT was worse than other techniques on dose distribution, but it is reasonable in terms of TCP and NTCP baseline Tomotherapy, IMRT -dose distribution was relatively superior- was hard to therapy to claustrophobic patients and patients with respiratory failure. Particularly, in case on Tomotherapy, it take MVCT before treatment so dose measurement will be unnecessary radiation exposure to patients. Conclusion, Tomotherapy was the best treatment technique and 2nd was IMRT, and 3rd 3D-CRT. But applicable differently depending on the the patient's condition even though dose not matter.
Radioactive Iodine Therapy Room a Part University Hospital of the Actual Conditions of Safety Management Consideration
Han, Sang-Hyun ; Lee, Sang-Ho ;
Journal of the Korean Society of Radiology, volume 6, issue 5, 2012, Pages 373~381
DOI : 10.7742/jksr.2012.6.5.373
Using Radioiodine therapy of thyroid cancer in the past have been used for decades as many look forward to continuing treatment be used, and the current outlook of in korea 2010 based on the number of Iodine therapy room is operated by 124, but still is lacking. So many hospitals opened their therapy room, but importantly, increasing number of treatment rather than therapy room current treatment is that it must be preceded by the proper administration of the. Therefore therapy room expansion, discussions about before now being applied therapy room safety management standards, and a part university hospital based safety management standards by examining how well kept and that the therapy room to the use of the overall safety management research on the actual condition were discussed.
A Study on the Load Analysis of Gliding Grade under the Kaltenborn-Evjenth Concept
Choi, Seok-Joo ; Choi, Wan-Suk ; Moon, Ok-Kon ;
Journal of the Korean Society of Radiology, volume 6, issue 5, 2012, Pages 383~388
DOI : 10.7742/jksr.2012.6.5.383
This study attempted to make comparisons in the magnitude of the applied power depending on gender, gliding direction and gliding grade when gliding treatment grade II and III under the Kaltenborn-Evjenth Concept
are applied to the caudal, ventral and dorsal shoulder joint using the loading cell equipment. As a result of load difference depending on gender, men showed a significantly higher load than women for all of Caudal Grade II/III, Ventral Grade II/III and Dorsal Grade II/III (p<.05). As a result of comparisons for load difference depending on the treatment direction, the ventral and dorsal loads were significantly higher than the caudal load for all of Grade II and Grade III (p<.05). As a result of comparisons for load difference depending on treatment grade, the load was significantly higher in Grade III than Grade II for all of the caudal, ventral and dorsal side (p<.05). Given the aforesaid results, it could be confirmed that the magnitude of the applied force at the same grade could be different depending on the direction and gender, when gliding II/III are applied to the caudal, ventral and dorsal of glenohumeral joint.
Consistent Comparison for The Linearity Air Kerma of IEC Standards and Commercial Load in Diagnosing DR Generators
Han, Beom-Hui ; Kim, Chong-Yeal ; Lee, Sang-Ho ; Han, Sang-Hyun ; You, In-Gyu ;
Journal of the Korean Society of Radiology, volume 6, issue 5, 2012, Pages 389~394
DOI : 10.7742/jksr.2012.6.5.389
In this study, based on IEC 60601-2-54 standard load conditions presented in the limited interval over the air kerma at the absolute linearity closely evaluated by measuring the X-ray results were as follows: 10 units targeted all Diagnostic X-ray generating device (DR) presented in the IEC 60601-2-54 standard linearity of air kerma emerged as inappropriate, the general evaluation of the dose linearity from four in the top 50% and 80 kVp % of the two measurement series were as irrelevant all the rest from six of the top tube voltage of 50% and 80% of the two measurement series, appeared in all suitable. Presented in IEC 60601-2-54 standard dose linearity testing and conventional linearity tests showed many differences. IEC 60601-2-54 standard linearity in the proposed international standards of air kerma is the recommendation of the existing dose linearity considerably more feasible, and to quantify the amount of radiation as the standard suggested by the standard IEC 60601-2-54 air kerma of a diagnostic X-ray imaging device linearity performance management is considered key elements in the critical appraisal.
Comparison with ABCHES and Abdomen Compression Device in Respirational Radiation Therapy on Patients in Hepatocellular Carcinoma
Cho, Yoon-Jin ; Byun, Sang-Joon ; Kim, Young-Jae ;
Journal of the Korean Society of Radiology, volume 6, issue 5, 2012, Pages 395~402
DOI : 10.7742/jksr.2012.6.5.395
4D-Radiation Therapy is the optimal treatment to track moving organs(tumor) and give the appropriate prescription dose to tumor and low radiation dose to normal tissue surrounding tumor volume. The ABCHES is a 4DRT devices maintaining shallow breathing to patients. It allows the tumor's movement was minimize. Meanwhile, Abdominal compression device is limited the breath compressing abdomen on patients. In this paper we will quantitative analysis the movement of tumor on only ABCHES versus ABCHES with Abdomal compression device and Analysis tumor dose and normal tissue's dose by Dose Volume Histogram on two parts. The result of Comparision ABCHES and ABCHES with Abdominal compression device, SI(Superior-Inferior) direction, AP(Anterior-Posterior) direction and LR(Left-Right) direction was limited 1.0 mm, 0.2 mm, 0.2 mm(average). and also reduction rate of voluume in HPTV was
, and LPTV was
under only using ABCHES and ABCHES with compression. The analysis dose volume histogram was more radiation dose in ABCHES and abdominal compression device than only using ABCHES, and less normal tissue-ipsilateral lung, whole lung, kidney-dose in ABCHES and abdominal compression device than only using ABCHES. The overall analysis was ABCHES with abdominal compression better than only using ABCHES method. In hereafter it will be studies that limitation of ABCHES and abdomonal compression device. In other words, patient's discomfort on compression intensity, method of application on patient with inaccurate respiration cycle.
Neutron Capture Resonance Energy Identification of Indium by Time-of-Flight Method
Lee, Sam-Yol ;
Journal of the Korean Society of Radiology, volume 6, issue 5, 2012, Pages 403~408
DOI : 10.7742/jksr.2012.6.5.403
Prompt gamma ray from the natural Indium sample was measured by using an assembly of BGO(
) scintillation detectors in the neutron energy region from 1 to 300 eV. The assembly was composed of pieces of BGO. The spectrometer was composed geometrically as total energy absorption detector. 46-MeV electron linear accelerator which is located at Research Reactor Institute, Kyoto University used for neutron sources from photonuclear reaction. The measurement of the neutron capture resonances was performed to below neutron energy 1 keV, because of strong X-ray effect from photonuclear reaction in Ta target and short distance from the target to an assembly of detector. The distance of neutron flight path is
. The large neutron capture resonances were measured from 1 to 400 eV. The energy in the capture resonance was compared with the evaluated values. The large resonances were seen in the present measurement. General agreement can be seen between the present measurement and the previous evaluated data in relevant energy region. In the present study, we measured the continues resonance structure above 1 keV neutron energy region. 91.49 eV new neutron capture resonance was found in present measurement.
Feature values of DWT using MR general imaging and molecular imaging
Pack, Dae-Sung ; Choi, Gui-Rack ; Han, Byung-Sung ; Ahn, Byung-Ju ;
Journal of the Korean Society of Radiology, volume 6, issue 5, 2012, Pages 409~414
DOI : 10.7742/jksr.2012.6.5.409
This study acquired molecular lmaging using nano-contrast agents, and the general condition of the same image acquisition to analyze the difference between molecular imaging and general imaging, two images are converted into DWT (Discrete Wavelet Transform). Nano-contrast agent imaging using MRI and molecular imaging using PET study of molecular imaging technology mainstream. DWT analysis of the same lesions using MRI imaging and molecular imaging block lesions are present in the lesions, illustrating the value of a high-frequency feature both highly general imaging and molecular imaging could know that. The high frequency region of the feature extraction values appear higher molecular imaging.
Impact of KTO Method on the shoulder pain reduction
Kang, Cheol-Ho ; Byun, Sang-Joon ; Hong, Seong-Gyun ;
Journal of the Korean Society of Radiology, volume 6, issue 5, 2012, Pages 415~419
DOI : 10.7742/jksr.2012.6.5.415
Frozen shoulder was diagnosed with this study 14 patients were enrolled. Patients who volunteer to visit the configuration is more than six months and pain were studied in a chronic illness. Frozen shoulder to patients based on these results the effect of KTO treatment is a diet that is valid for a unified model and the exact effect can be enhanced, be combined with other treatments and therapies are deemed necessary. When applied to patients with Frozen shoulder KTO with an increased range of motion of the shoulder can result in a reduction of pain.
A comparative study of educators vs, non-educators designed to improve dental radiographic quality control - Focusing on theories of dental radiographic and practical training and clinical practice education -
Kim, Seung-Hee ; Hong, Su-Min ; Lee, Kwang-Ok ;
Journal of the Korean Society of Radiology, volume 6, issue 5, 2012, Pages 421~426
DOI : 10.7742/jksr.2012.6.5.421
The purpose of this study was to investigate the knowledge of dental hygiene students of the quality assurance of dental radiation such quality assurance and related educational experiences in an effort to accelerate the preparation of a curriculum for systematic quality-assurance. The subjects in this study were 453 dental hygiene students who participated in dental radiography courses. Varied statistical analyses such as frequency analyses, reliability, chi-square, and independent samples t-tests were conducted on the data collected, using SPSS 12.0. Scheffe test was also used after one-way ANOVA as post-hoc tests. Results showed that (a) the students' acknowledge level of Radiographic Quality Assurance was
out of 12 on average. The more theory and practical classes students took, the higher points they got (p<0.001); (b) Most of the students experienced 1-3 lessons out of 13 in practical training and 26.3% of students did not take any practical lesson. ;(c)Students who did not take any practical training got 7.20 points out of 13, students who took 1-3 lessons got 7.84 points out of 13, students who took 4-5 lessons got 7.87 points out of 13, and students who took more than 6 lessons got 8.14 points out of 13 on average. The more practical classes they took the higher acknowledge level they were. Therefore it needs to provide adequate practical lessons to them.
A Study on Shoulder Joint Motions in the Caudal Gliding of Kaltenborn-Evjenth Concept
Choi, Wan-Suk ; Park, Ju-Hyun ; Jung, Bong-Jae ; Moon, Ok-Kon ; Min, Kyung-Ok ; An, Ho-Jung ;
Journal of the Korean Society of Radiology, volume 6, issue 5, 2012, Pages 427~433
DOI : 10.7742/jksr.2012.6.5.427
This study aimed at identifying changes in the acromiohumeral distance (AHD) and arm when the caudal gliding gradeII and III of Kaltenborn-Evjenth Concept
are applied to the right glenohumeral joint. The humeral head moved down about 5mm from the initial position when the gliding gradeII was applied, and about 8mm from the initial position when the gliding gradeIII was applied. Although men showed a higher acromiohumeral distance per grade than women in comparisons by gender for the acromiohumeral distance, there was no significant difference in statistics. The Abduction angle improved about
from the initial angle when the gliding gradeII was applied, and about
from the initial angle when the gliding gradeIII was applied. Although women showed the abduction angle greater than men for every grade in comparisons by gender for the abduction angle, there was no significant difference in statistics. Based on the aforesaid findings, the extent of kinematic changes in the humeral head could be identified when the gliding grades were applied. Accordingly, it is considered that more scientific evidence based treatments could be expected if influences on the surrounding structures by these changes could be learned through more studies in the future.