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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 7, Issue 6 - Dec 2013
Volume 7, Issue 5 - Oct 2013
Volume 7, Issue 4 - Aug 2013
Volume 7, Issue 3 - Jun 2013
Volume 7, Issue 2 - Apr 2013
Volume 7, Issue 1 - Feb 2013
Selecting the target year
Dose Evaluation of Childhood Leukemia in Total Body Irradiation
Lee, Dongyeon ; Ko, Seongjin ; Kang, Sesik ; Kim, Changsoo ; Kim, Donghyun ; Kim, Junghoon ;
Journal of the Korean Society of Radiology, volume 7, issue 4, 2013, Pages 259~264
DOI : 10.7742/jksr.2013.7.4.259
Total body irradiation in the treatment of childhood leukemia, which is one of the pre-treatment with stem cell transplantation is being used, the current organization using compensators are treated. However, under the terms of the compensator organization long-term impact on the human body, it is difficult to assess directly. In this study, we use the mathematical simulation of radiation exposures body energy and the distance to the crew and the patient (source surface distance, SSD), and patients with tissue compensators change of the distance along the body of the organ doses were evaluated. As a result, the surface dose of energy 4 MV, SSD 280 cm, tissue compensators and the patient when the distance 30 cm 5.84 G / min showed the highest levels. In addition, patients with tissue compensators and the distance apart when 30 cm TBI represents the ideal dose distribution was found.
Analysis of Signal Intensity in Choroid Plexuses by Diffusion Weighted Imaging
Oh, JongKap ;
Journal of the Korean Society of Radiology, volume 7, issue 4, 2013, Pages 265~269
DOI : 10.7742/jksr.2013.7.4.265
This report aims at picturing out the clinical usefulness by analyzing the signal intensity in choroid plexuses which produce cerebrospinal fluids by diffusion weighted imaging. At first, subjects were chosen among the patients who showed high in signal intensity by diffusion weighted imaging. The subjects were taken another test by fluid attenuated inversion recovery diffusion weighted echo planer image(FLAIR-DW-EPI) the signals of fluid attenuation. And it was found that there are differences between the signal intensities of the two methods, which showed that the signal intensity in FLAIR-DW-EPI is equal to or low than, that in the Brain. By this, it is felt that it is helpful to diagnose the disease in choroid plexus by testing another more with FLAIR-DW-EPI methods the patients who showed high in signal intensity in choroid plexus by
diffusion weighted echo planer image(
A Study of Tube Angle and Patient`s Rotation Angle in Scapular Y View
Ahn, ByeoungJu ; Lee, JunHaeng ;
Journal of the Korean Society of Radiology, volume 7, issue 4, 2013, Pages 271~275
DOI : 10.7742/jksr.2013.7.4.271
Shoulder bone scan everyday life, sports activities at the side of the shoulder joint, or applying strong force in the lateral occurs. Mainly on upper arm abduction, temple, other rotational dislocation of the shoulder joint gahaejyeo as useful for observing the presence or absence of lesions is used. Shoulder PA oblique projection prevent distortion of the image due to the angle and the most useful diagnostic radiological investigate shooting angle. Shoulder blade body and the acromion and coracoid process Y-view is formed characters.
angle between the shoulder blades and the acromion is the obstruction.
to the Y-view of the humerus head looks superimposed, the position of the shoulder joint and seemed appropriate.
of the humerus head superimposed on the Y-view, but above the humerus head and shoulder joints were distorted. When
elevation observed on the side of the best has come Y-view also acromion and coracoid process is finished.
Reduction of Radiation Dose according to Geometric Parameters from Digital Coronary Angiography
Kang, Yeonghan ; Cho, PyongKon ;
Journal of the Korean Society of Radiology, volume 7, issue 4, 2013, Pages 277~284
DOI : 10.7742/jksr.2013.7.4.277
This study aims to find out geometric parameters which practitioner adjustable to reduce dose in coronary angiography. We take fluoroscopy and cine exposure by use of phantom, and got dose use the dose-area product(DAP) meter of angiography device, than convert DAP to effective dose. As results, Cine exposure shows higher dose measurement about 6-7 times than fluoroscopy. Dose in frame per second(FPS) mode could be decrease down to 70%, as lower FPS. In view of X-ray tube angle, LAO
shows highest dose measurement. More use of Collimator, lower dose measurement. Source-image intensifier distance(SID) get longer to 10cm, dose of each fluoroscopy and cine exposure increase up to 25-30%. Image magnification of field of view(FOV) could increase dose up to 1.21-2 times. Also table-image intensifier distance get longer to 10cm, dose increased 1.11-1.25 times. Practitioner can adjust several geometric parameters, as FPS mode, tube angle, Collimation, SID, table-image intensifier distance, FOV. And each factors can reduce radiation dose in coronary angiography.
The Study of Dose Distribution according to the Using Linac and Tomotherapy on Total Lymphnode Irradiation
Kim, Youngjae ; Seol, Gwanguk ;
Journal of the Korean Society of Radiology, volume 7, issue 4, 2013, Pages 285~291
DOI : 10.7742/jksr.2013.7.4.285
In this study, compare and analyze the dose distribution and availability of radiation therapy when using a different devices to TNI(Total Lymphnodal Irradiation). Test subjects(patients) are 15 people(Male 7, Female 8). Acquire CT Simulation images of the 15 people using Somatom Sansation Open 16 channel and then acquired images was transferred to each treatment planning system Pinnacle Ver 8.0 and Tomotherapy Planning System and separate the tumor tissue and normal tissues(whole lung, spinal cord, Rt kidney, Lt kidney). Tumor prescription dose was set to 750 cGy. and then Compare the Dose Compatibility, Normal Tissue`s Absorbed Dose, Dose Distribution and DVH. Statistical analysis was performed SPSS Ver. 18.0 by paired sample Assay. The absorbed dose in the tumor tissue was
in tomotherapy planning,
in linac. Tomotherapy`s absorbed dose in the tumor was more appropriate than linac. and These values are not statistically significant(p>0.05). Tomotherapy plan`s absorbed dose in the normal tissues were less than linac`s plan. This value was statistically significant(p<0.05) excepted of whole lung. In DVH, appropriated on tumor and normal tissues in tomotherapy and linac but tomotherapy`s TER was better than linac. Namely, a result of Absorbed dose in tumor and normal tissue, Dose distribution pattern, DVH, Both radiation therapy devices were appropriated in radiation therapy on TER. The Linac has a short treatment time(about 15-20 min) and open space on treatment time. It cause infant and pediatric patients to receiving uncomfortable treatment. So, In this case, it will be fine that Linac based therapy was restricted use. and if the patient was cooperative, it will be show a better prognosis that Tomotherapy using Radiation Therapy.
Factor Analysis on Cerebrovascular Disease of Korean Police Officers
Jeon, WooJin ; Cho, Jaehwan ;
Journal of the Korean Society of Radiology, volume 7, issue 4, 2013, Pages 293~299
DOI : 10.7742/jksr.2013.7.4.293
The aim of this study is to investigate the correlation cerebrovascular disease factors in police officers, to provide basic data for a systematic and effective resource management of police officers in the future. This study was conducted on police officers who visited the national police hospital and who underwent MRI for the diagnosis of cerebrovascular diseases. In study result, the probability of cerebrovascular disease was 1.63 times higher in patients with a hypertension. And, the probability of cerebrovascular disease was 1.95 times higher in patients with a Cardiovascular disease. Beside, the probability of cerebrovascular disease was 0.54 times higher in patients with a drinking. And, the probability of cerebrovascular disease was 0.32 times higher in patients with a high homocysteine level.
Analysis of Image Distortion by Mandibular Arch Form in Cone Beam CT and Panoramic Image
Jeong, Cheonsoo ; Lee, Geeheun ;
Journal of the Korean Society of Radiology, volume 7, issue 4, 2013, Pages 301~305
DOI : 10.7742/jksr.2013.7.4.301
This thesis intends to analyze tooth distortion by mandibular arch form by reproducing existing panorama image and reconstructed panorama image of Cone Beam CT data with the three-dimensional computer program. The diameter of tooth measured in Cone Beam CT`s cross-section image and reconstructed panorama was synchronized without any big change from incisors to posteriors. But, panorama showed serious distortion as going to posteriors after showing a little distortion in incisors. The panorama reconstructed for patients` individual arch showed reduced distortion than panoramas used generally. In addition, panorama showed serious distortion from incisors to posteriors and it means that distortion is reduced in reconstructed panorama.
Volume Change of Spiral Computed Tomography due to the Changed in the Parameters
Lee, JunHaeng ;
Journal of the Korean Society of Radiology, volume 7, issue 4, 2013, Pages 307~311
DOI : 10.7742/jksr.2013.7.4.307
This study examined the change of artifact volume by analyzing the level of image change associated with the setting of threshold through 3D imaging in scan parameter(slice thickness and helical pitch) and 3D image reconstruction to explore whether the presence of pathology was fully distinguished when CT was taken by lower dose than the existent dose to reduce exposure. Furthermore, this study attempted to investigate Scan Parameter acceptable in CT to reduce exposure dose. For materials and methods, silicon was used to produce samples. Five spherical samples were produced at 10-millimeter intervals(50, 40, 30, 20, and 10 mm) in diameter and were fixed at 120 Kvp of tube voltage and 50 mA of tube current. Varied slab thickness((1.0, 2.0, 3.0, 5.0, and 7.0mm) and Helical Pitch(1.5, 2.0, 3.0) were scanned. The image at an interval of 1.0, 2.0, 3.0, 5.0, and 7.0mm was transmitted to the workstation. Threshold(-200, -50, 50 ~ 1,000) was changed using the volume rendering technique, 3D image was reconstructed, and artifact volume was measured. In conclusion, 1.5 of Helical Pitch showed the least change of volume and 3.0 of helical pitch showed the greatest reduction of volume change. The experiment suggested that as slice thickness was increased, artifact volume was decreased more than actual measurement. Furthermore, in the 3D image reconstruction, when the range of threshold was set as -200 ~1,000, artifact volume was changed the least. Based on the results, it is expected to have an effect of reducing exposure dose.