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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
Kindergarten parents' perceptions on radioactive-contaminated foods and irradiated foods - Focus on the accident of unclear plant in Japan, 2011 -
Yang, Jinhee ; Park, Yun ; Yeo, Hwayeon ;
Journal of the Korean Society of Radiology, volume 6, issue 6, 2012, Pages 435~440
DOI : 10.7742/jksr.2012.6.6.435
The purpose of this study was to examine the impact of the Fukushima nuclear power plant accident of Japan in 2011 on kindergarten parents' perception about irradiated foods and radioactive-contaminated foods. This study analysed the 178 questionnaire forms out of 205 parents of 'K' and 'M' kindergarten in the region of 'J' city. The findings of the study indicated that the Japanese nuclear power plant accident exerted an influence on anxious of kindergarten parents about irradiated foods and radioactive-contaminated foods. In conclusion, The full-fledged publicity and parent education are required to improve the perception and understanding of kindergarten parents about irradiated foods and the differences between it and radioactive-contaminated foods.
Evaluation of Effectiveness of New Design Lead Apron during Pregnant X-ray Chest P-A
Kim, Hyeonggyun ; Kwon, Soonmu ; Jung, Hongmoon ;
Journal of the Korean Society of Radiology, volume 6, issue 6, 2012, Pages 441~445
DOI : 10.7742/jksr.2012.6.6.441
X-ray Chest P-A is very important and basic diagnosis examination for pregnant women. For a pregnancy period pregnant women should be treated very carefully not to be exposed to any radiation which might cause harmful damage to women and babies as well. Lead apron is one of the effective methods to protect pregnant women from the X-ray radiation. However, it is difficult to obtain the accurate position of pregnant women during X-ray Chest P-A since conventional lead apron method forces pregnant women to hold the apron by themselves only to make pregnant women very uncomfortable and hard to maintain accurate position during radiation. As a consequence, it is common to get low quality images of X-ray Chest P-A due to the overlap of apex of lung and scapular. In order to fix this problem, we made new design lead apron that allowed pregnant women to be more comfortable to maintain accurate position during X-ray Chest P-A position. Finally, with this new design lead apron, it was possible to get the best optimized images of X-ray Chest P-A of pregnant women by minimizing overlapping apex of lung and scapular.
Performance Measurement of Diagnostic X Ray System
You, Ingyu ; Lim, Cheonghwan ; Lee, Sangho ; Lee, Mankoo ;
Journal of the Korean Society of Radiology, volume 6, issue 6, 2012, Pages 447~454
DOI : 10.7742/jksr.2012.6.6.447
To examine the performance of a diagnostic X-ray system, we tested a linearity, reproducibility, and Half Value Layer(HVL). The linearity was examined 4 times of irradiation with a given condition, and we recorded a level of radiation. We then calculated the mR/mAs. And the measured value should not be more than 0.1. If the measured value was more than 0.1, we could know that the linearity was decreased. The reproducibility was analyzed 10 times of irradiations at 80kVp, 200mA, 20mAs and 120kVp, 300mA, 8mAs. The values from these analyses were integrated into CV equation, and we could get outputs. The reproducibility was good if the output was lower than 0.05. HVL was measured 3 times of irradiation without a filter, and we inserted additional HLV filters with 0, 1, 2, 4 mm of thickness. We tested the values until we get the measured value less than a half of the value measured without additional filter. We tested the linearity, the reproducibility, and HVL of 5 diagnostic X-ray generators in this facilities. The linearity of No. 1 and No. 5 generator didn't satisfy the standard for radiation safety around 300mA~400mA and 100mA~200mA, respectively. HVL of No.1 generator was not satisfied at 80kVp. The outputs were higher in the three-phase equipment than the single-phase equipment. The old generators need to maintain and exchange of components based on the these results. Then, we could contribute to getting more exact diagnosis increasing a quality of the image and decreasing an expose dose of radiation.
Evaluation of Approximate Exposure to Low-dose Ionizing Radiation from Medical Images using a Computed Radiography (CR) System
Yu, Minsun ; Lee, Jaeseung ; Im, Inchul ;
Journal of the Korean Society of Radiology, volume 6, issue 6, 2012, Pages 455~464
DOI : 10.7742/jksr.2012.6.6.455
This study suggested evaluation of approximately exposure to low-dose ionization radiation from medical images using a computed radiography (CR) system in standard X-ray examination and experimental model can compare diagnostic reference level (DRL) will suggest on optimization condition of guard about medical radiation of low dose space. Entrance surface dose (ESD) cross-measuring by standard dosimeter and optically stimulated luminescence dosimeters (OSLDs) in experiment condition about tube voltage and current of X-ray generator. Also, Hounsfield unit (HU) scale measured about each experiment condition in CR system and after character relationship table and graph tabulate about ESD and HU scale, approximately radiation dose about head, neck, thoracic, abdomen, and pelvis draw a measurement. In result measuring head, neck, thoracic, abdomen, and pelvis, average of ESD is 2.10, 2.01, 1.13, 2.97, and 1.95 mGy, respectively. HU scale is
, respectively, in CR image. At this moment, using characteristic relationship table and graph, ESD measured approximately 2.16, 2.06, 1.19, 3.05, and 2.07 mGy, respectively. Average error of measuring value and ESD measured approximately smaller than 3%, this have credibility cover all the bases radiology area of measurement 5%. In its final analysis, this study suggest new experimental model approximately can assess radiation dose of patient in standard X-ray examination and can apply to CR examination, digital radiography and even film-cassette system.
Utilization-Focused Reduction of Radiation Exposure with XCP-DS FIT Sensor Holder by Measuring Dose of Dental X-ray Generator
Lee, Kyung Hee ;
Journal of the Korean Society of Radiology, volume 6, issue 6, 2012, Pages 465~471
DOI : 10.7742/jksr.2012.6.6.465
In this study, three dimensional X-ray dose distribution from dental X-ray generator system was measured by ALOKA PDM-117 dosimeter. The X-ray dose distribution will be change with XCP-DS FIT in oral shot, because the distance between X-ray generator and the dosimeter. The X-ray dose change affects on patient exposure and radiograph image quality. Therefore, it is important to obtain relation between the X-ray dose and the distance. The X-ray dose at the central position was decreased with increasing the distance. Furthermore, the dose at the edge of the X-ray flux was increased with increasing the distance. The increased dose affects on the patient radiation exposure. The present results will provide for good dental radiograph image and reducing radiation over-exposure on patient.
TLD dose variation of Magnetic Resonance Imaging Equipment
Je, Jaeyong ; Kang, Eunbo ;
Journal of the Korean Society of Radiology, volume 6, issue 6, 2012, Pages 473~476
DOI : 10.7742/jksr.2012.6.6.473
The PET-MRI which has been installed and being managed recently uses both magnetic field and radiation. Most radiation workers wear a thermoluminescenct dosimeter (TLD) as a personal radiation dosimeter, and the TLD is affected both by a magnetic field and radiation. In this research, the same amount of X-ray was applied to 36 TLDs, and the changes in the dose of the 32 TLDs exposed to magnetic field at the location where its intensity of the magnetic resonance imaging (MRI) was about 5000 Gauss for eight hours with one-hour unit and that of the four TLDs not exposed to magnetic field were compared and checked. The measurement result showed that exposure dose of the TLD attached to the MRI changed irregularly depending on the amount of exposure time. Therefore, the TLD whose amount of changes little in the environment of a MRI is demanded to be developed.
Development and Evaluation of Parallel Beam Optic for X-ray
Park, Byunghun ; Cho, Hyungwook ; Chon, Kwonsu ;
Journal of the Korean Society of Radiology, volume 6, issue 6, 2012, Pages 477~481
DOI : 10.7742/jksr.2012.6.6.477
An X-ray diffractometer which has various X-ray optics can give qualitative and quantitative information for a sample using a nondestructive analysis method. A parallel beam optic passes the parallel beam and removes divergent beam generated from an X-ray tube. The parallel beam optic used in the X-ray diffractometer was fabricated by wire cut and grading of stainless steel plates and was evaluated its performance using an X-ray imaging system. The measured parallelization of 6.6 mrad for the fabricated the parallel beam optic was a very close to the expected value of 6 mrad. An X-ray imaging technique for evaluating the parallel beam optics can estimate parallelization for each plate and can be used to other X-ray optics.
Absorbed Spectrum Comparison of Lead and Tungsten in Continuous X-ray Energy using Monte Carlo Simulation
Kim, Kyotae ; Kang, Sangsik ; Noh, Sicheul ; Jung, Bongjae ; Cho, Changhoon ; Heo, Yeji ; Park, Jikoon ;
Journal of the Korean Society of Radiology, volume 6, issue 6, 2012, Pages 483~487
DOI : 10.7742/jksr.2012.6.6.483
In 1895, the discovered X-ray is used for not only in this field of medicine wide but also field. The detection of radiation after, people realized the risk of the radiation exposured recommended the principle about the protection of radiation by the part of the effort for lowering the radiation exposure. In this recommendation, all unnecessary radiation exposure have to be prevented by All doses include the protection of radiation, general idea of applicable two kinds of that it has to low maintain. Presently, in the General X-ray room of the clinical, the lead (Pb) was used for the shielding, However, because it had the problem of the lead poisoning which is fatal in the human body, the alternatives was showed. and Among them, the material that it is the tungsten was presented. in this research, the absorbed spectrum according to the thickness in the continuous X-ray energy of the tungsten which is not harmful to the human body through the Monte Carlo simulation, tried to compare with the absorbed spectrum of the lead (Pb). The tungsten confirmed that simulation presumption than result lead in the whole domain that absorbed probability was higher and it is considered that tungsten shows the absorbed efficiency higher than the lead in particularly, 70 keV ~ 90 keV and the tungsten is more useful to the X-ray energy cover of the high energy diagnostic area.
Study on the Free Volume in Polymer by Positron Annihilation Lifetime Spectroscopy (PALS)
Kim, Yongmin ; Shin, Jungki ; Kwon, Junhyun ;
Journal of the Korean Society of Radiology, volume 6, issue 6, 2012, Pages 489~493
DOI : 10.7742/jksr.2012.6.6.489
Positron Annihilation Lifetime Spectroscopy is a non-destructive technique to study voids and defects in solids by the measurement of gammas from electron-positron annihilation. In this study, we measured the lifetime of CR, EPDM, NBR, all of which are widely used polymer in various fields. A conventional fast-fast coincidence system in KAERI(Korea Atomic Energy Research Institute) has been used to measure the lifetime spectra, Three lifetime components were analyzed from each lifetime spectra. According to Tao-Eldrup model equation, the size and fraction of free-volume were calculated. Mean radius and free volume fraction of CR, EPDM NBR are
(2.6381%), respectively. Through these measurements, we identified the feasibility of the PAL system for polymer analysis.
Thermal Characteristics Analysis of Power Device for Motor Driving Power Converter
Cho, Moontaek ; Lee, Chungsik ; Lee, SangBock ;
Journal of the Korean Society of Radiology, volume 6, issue 6, 2012, Pages 495~498
DOI : 10.7742/jksr.2012.6.6.495
In this paper, the basic behavior of the environment and the driving time as a prediction of the lifetime of the power semiconductor devices were recorded. Radiator of a power device driving time and temperature operating environment, including cumulative record by the controller of the power converter, and doing it so you can see the power semiconductor devices for the life of the structure that the size of the change in the temperature of the semiconductor chip and the number of iterations to maintenance warranty period because of a lifetime by forecasting or replacement can be made at the appropriate time that is considered.
Relative ratio about dose value of thermoluminescence and optical stimulated luminescence dosimeter according to exposed condition in diagnostic radiation
Kang, Yeonghan ; Kwon, Soonmu ; Kim, BooSoon ;
Journal of the Korean Society of Radiology, volume 6, issue 6, 2012, Pages 499~505
DOI : 10.7742/jksr.2012.6.6.499
The purpose of this study was to find out the difference of radiation dose value through energy, exposure number, fluoroscopy time, the number of days of exposed scatter X-ray when TLD and OSLD is used in diagnostic radiology. The difference of value were measured by relative ratio and interval. Energy makes high relative ratio of TLD(
) than OSLD(
), exposure number makes high of OSLD(
) than TLD(
). There are no significant differences between relative ratio of TLD and OSLD in fluoroscopy time and the number of days of exposed scatter X-ray. But interval of relative ratio in the number of days of exposed scatter X-ray was narrowed in less 0.2. That means, the measurement of scatter X-ray could more confident in TLD and OSLD than the measurement of direct ray. In conclusion, we have to recognize the relative ratio of TLD and OSLD could be vary depending on exposed condition of radiation. And in some cases, double test of TLD and OSLD get more creditable results of dose value.
A Research on Superparamagnetic Iron Oxide Nanoparticles' Toxicity to U373MG Cell and its Effect on the Radiation Survival Curve
Kang, Seonghee ; Kim, Jeonghwan ; Kim, Dokyung ; Kang, Bosun ;
Journal of the Korean Society of Radiology, volume 6, issue 6, 2012, Pages 507~513
DOI : 10.7742/jksr.2012.6.6.507
This research was performed to evaluate the superparamagnetic iron oxide nanoparticles'(SPIONs) cell toxicity and to measure the radiation cell survival curve changes of SPIONs-uptake glioblastoma multiforme cells. The results could be practically used as the fundamental data to ameliorate proton beam cancer therapy, for example, providing necessary GBM treatment dose in the proton beam therapy when the therapy takes advantage of SPIONs. The assessment of the toxicological evaluation of synthesized SPIONs was accomplished by MTT assay as an in vitro experiment. The results showed no meaningful differences in the cell survival rate at the
SPIONs concentrations, but the cell toxicity was shown as the cell survival rate decreased up to 74.2% at the
SPIONs concentration. Then, we measured each radiation cell survival curve for U373MG cells and SPIONs-uptake U373MG cells with 0~5 Gy of proton beam irradiations. It is learned from the analysis of the experimental results that the SPION-uptake cells' radiation survival rate was more rapidly decreased as the irradiation dose increased. In conclusion we confirmed that SPIONs-uptake in U373MG cells induces cell death at the much less dose than the lethal dose of SPION-non-uptake cell. This research shows that the therapeutic efficacy of glioblastoma multiforme treatment in proton beam therapy can be improved by SPIONs targeting to the GBM cells.
The study on the Effect of relaxation of stress E.D.T applies
Han, Byungsung ; Kim, Weanjun ; Hong, Seonggyun ;
Journal of the Korean Society of Radiology, volume 6, issue 6, 2012, Pages 515~520
DOI : 10.7742/jksr.2012.6.6.515
The stress of modern society as the biggest areas of interest are being considered to be the cause of all disease. These stresses affect the brain, particularly in the unusual, the reduction of alpha-wave is that it happens. In this study, about the stress of alfa-wave EDT alternative medicine techniques to evaluate whether the positive impact is on. Application of the 10 minutes 2 times a week carried out two weeks with the following conclusions were protruding. Alternative Medicine EDT to apply techniques to stabilize the meaning of the EEG alpha and beta wave of the increase was reduced, showed no significant effect in reducing gamma-wave suggest that there is some help. Through these results, EDT alternative medicine technique stress in alfa-wave because of the significant effects in improving elementary school teachers on stress management and emphasizes the necessity of actively used.
Measurement of Kager's Triangle Area and Retrocalcaneal Surface Temperature by shoes heel height
Jeon, Byeongkyou ; Yeo, Jindong ; Shin, Jungsub ;
Journal of the Korean Society of Radiology, volume 6, issue 6, 2012, Pages 521~529
DOI : 10.7742/jksr.2012.6.6.521
The aim of this study was to analyze radiological change of Kager's triangle area and retrocalcaneal surface temperature by shoes heel height. Area of Kager's triangle was measured by simple radiography study And PACS of INFINITI. Retrocalcaneal surface temperature were measured by DITI. Area of Kager's triangle and retrocalcaneal surface temperature were calculated for comparison and analysis, with flat shoes and high heel shoes. Area of Kager's triangle(
) and retrocalcaneal surface temperature (
)tends to decrease with high heel shoes. The highest and shortest of the Kager's triangle area and a surface temperature difference between flat shoes and high heel shoes, each
and showed slight differences. The highest weight and the lowest weight of a surface area and the temperature difference between flat shoes and high heels, each
and higher weight Kager's area and the surface temperature is decreased. The longest time and shortest time of a surface area and the temperature difference between high heels, each
. In conclusion, Areas of Kager's triangle and retrocalcaneal surface temperature decrease with high heel shoes. If we wear high heel shoes for a long time, retrocalcaneal pain and blood flow disorder will occurs.