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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 5, Issue 6 - Dec 2011
Volume 5, Issue 5 - Oct 2011
Volume 5, Issue 4 - Aug 2011
Volume 5, Issue 3 - Jun 2011
Volume 5, Issue 2 - Apr 2011
Volume 5, Issue 1 - Feb 2011
Selecting the target year
The Research on the Simultaneous Examination of Thyroid Uptake Measurement and Thyroid Scan using Attenuation Filter
Lee, Hyo-Yeong ; Kim, Jong-Eon ; Im, In-Chul ;
Journal of the Korean Society of Radiology, volume 5, issue 6, 2011, Pages 309~313
DOI : 10.7742/jksr.2011.5.6.309
It is necessary for patients to wait twice for the thyroid examination of thyroid uptake measurement and thyroid scan by using
-pertechnetate. In the study, a method of simultaneous examination of thyroid uptake measurement and thyroid scan by one intravenous injection of
-pertechnetate was suggested by using attenuation filter. As a result, there was a significant correlation between control group and experimental group according to existence of attenuation filter. Consequently, the simultaneous examination of thyroid uptake measurement and thyroid scan by one intravenous injection can be applied clinically.
Survey of the Musculoskeletal Disorders of Riot Police and Conscripted Policeman in Radiologic Examination
Cho, Jae-Hwan ; Kang, Maeng-Jin ; Seok, Jong-Min ; Jeun, Sung-Joon ; Lim, Youn-Shik ; Jeong, Jae-Kyo ; Kim, Hyeon-Ju ; Ju, Myeong-Shik ; Dong, Kyung-Rae ; Park, Cheol-Soo ; Lee, Jin ; Lee, Hae-Kag ;
Journal of the Korean Society of Radiology, volume 5, issue 6, 2011, Pages 315~324
DOI : 10.7742/jksr.2011.5.6.315
The purpose of this study was to use as basic data for the is systematic and efficient facility inventory of policeman and the riot police, conscripted policeman. First, the analysis was performed for the patient implementing the simple x-ray, CT, and MRI examination to the policeman and the riot police, conscripted policeman within the radiologic examination. As to the classification by disease, it classified into the partial body as the common disease and musculoskeletal system disease. As to the fixed quantity comparison of the policeman and the riot police, conscripted policeman the basic X-ray, CT, MRI examination by part average personnel was compared. As to the research result the riot police, conscripted policeman, the Lower extremity examination occupies the simple X-ray, CT, and MRI examination in comparison with the other part altogether much and particularly, the Knee examination ratio occupies much among the Lower extremity examination.
Awareness of parents and infants on radiation leak in Fukushima in Japan
Park, Yun ; Lee, Jun-Haeng ; Kim, Hyun-Jeong ;
Journal of the Korean Society of Radiology, volume 5, issue 6, 2011, Pages 325~328
DOI : 10.7742/jksr.2011.5.6.325
The object of this study is to suggest national health material on the basis of awareness of parents and infants on radiation leak in Fukushima in Japan. This research investigated and analysed the 147 questionnaire forms out of 155 who are composed of 97 parents in 'H' kindergarten living in 'G' metropolitan city and 50 infants (5 years old, 27boys and 23 girls). In conclusion, the role of press is very important on the matter of radiation leak damage, and as a result, specific and practical management of curriculum regarding it is essential to provide parents and infants with useful information to improve national wellbeing.
A study on improvement of SPIHT algorithm using redundancy bit removing for medical image
Park, Jae-Hong ; Yang, Won-Seok ; Park, Chul-Woo ;
Journal of the Korean Society of Radiology, volume 5, issue 6, 2011, Pages 329~334
DOI : 10.7742/jksr.2011.5.6.329
This paper presents improvement of compression rate for SPIHT algorithm based on wavelet compression through redundancy bit removing. Proposed SPIHT algorithm uses a method to select of optimized threshold from feature of wavelet transform coefficients and removes sign bit only if coefficient is LL area. Finally Proposed SPIHT algorithm applies to Huffman coding. Experimental results show that the proposed algorithm achieves more improvement bit rate and more fast progressive transmission with low bit rate.
Protective Effects of Water dropwort and Jin-do turmeric on the Irradiation in Mouse
Yu, Ji-In ; Lee, Jun-Haeng ;
Journal of the Korean Society of Radiology, volume 5, issue 6, 2011, Pages 335~341
DOI : 10.7742/jksr.2011.5.6.335
This paper searched the affect of Water dropwort and Tumeric on radiation exposure. By experimenting 50 male mouse, ICR type 5 weeks old male 25~30g, 5 mouse was divided in to each group respectively. A : 3 Gy control group, B : 5 Gy control group, C : 3 Gy, FW, D : 5 Gy FW, E : 3 Gy LW, F : 5 Gy LW, G : 3 Gy FT, H : 5 Gy FT, I : 3 Gy LT, J : 5 Gy LT FW : Ate Water dropwort before the radiation exposure. FT : Ate Tumeric before the radiation exposure. LW : Ate Water dropwort after the radiation exposure. LT : Ate Tumeric after the radiation exposure. During the 7 day radiation, Control group (A, B) received physiological saline (500mg/kg/day) in oral administration, LW and LT group (E, F, I, J) respectively received Water dropwort or tumeric (500mg/kg/day) in oral administration after the radiation, FW and FT group (C, D, G, H) respectively received Water dropwort or tumeric (500mg/kg/day) in oral administration before the radiation. As a result, an average leukocyte rate on 5 mouse was 200K/
on group A. 6.46K/
on group C which was in normal rate range (1.8-10.7 K/
). An average leukocyte rate was 23.33K/
on group G. which was not normal rate, but compare to 200K/
, it was closer to normal rate. An average lymphocyte rate was 118.87K/
on Group A. 1.51K/
on Group G. which was in normal lymphocyte rate range (0.9-9.3K/
). An average thrombocyte rate was 4000K/
on Group A. 1107 K/
on Group C. 2759.6 K/
on Group G. which was in normal thrombocyte rate range (592-2972 K/
). From this result, it was found that when exposed to radiation, Water dropwort and Tumeric have defensive effect in a preventive level. Also from an animal experiment, it was found that blood corpuscle rate returns to a normal rate. Based on this experiment, diverse research on this field should be conducted.
Evaluation the absorbed dose in brain of dental radiography
Jeon, Woon-Sun ; Han, Dong-Kyoon ;
Journal of the Korean Society of Radiology, volume 5, issue 6, 2011, Pages 343~349
DOI : 10.7742/jksr.2011.5.6.343
This study was aimed to evaluate the absorbed dose in brain of dental radiography. For radiographic exposure, PLD(photoluminescence dosimetry) chips placed in Rando phantom to measurement the absorbed dose to pituitary gland, orbit, maxillary sinus and submandibular glands, thyroid gland, esophagus. Equipments were used Kodak 2200, Kodak 8000C dental radiographic systems and computed tomography(Lightspeed VCT). The absorbed doses were measured at the same exposure parameters and distance by the clinical factor(kV, mA, sec). The result were as follows ; The absorbed dose for intra-oral radiography were 0.02~2.47cGy, the greatest absorbed dose was 2.47cGy for thyroid gland in maxillary right molar projection. the lowest adsorbed dose was 0.02cGy for submandibular glands in lower anterior projection. The absorbed dose for extra-oral radiography were 0.36~3.44cGy of cephalometric method, 0.14~12.82cGy of panoramic method, 8.17~253.63cGy of computed tomography, the greatest adsorbed dose was 253.63cGy for submandibular glands in maxillary CT scan. the lowest adsorbed dose was 0.14cGy for orbit in panoramic method. As a result, extra-oral radiography was measured more than intra-oral radiography. In particular, method which used computed tomography was measured more than 100 times than intra-oral radiography highly. Therefore, you must show a guideline in extra-oral radiography and an effort to reduce absorbed dose is demanded.
A Study on the System Development and Management Method of USN Plants for Monitoring of Natural Disasters and Radioactive Contamination
Joo, Hae-Jong ; Cho, Moon-Taek ; Lee, Chung-Sik ; Baek, Jong-Mu ;
Journal of the Korean Society of Radiology, volume 5, issue 6, 2011, Pages 351~355
DOI : 10.7742/jksr.2011.5.6.351
In this paper, monitoring system and platform of plant growth are suggested which are required by safe crop management about disaster and radiation pollution. In addition, by monitoring plant growth, the growth of plants that can measure the size of the efficient system was developed. The expected effect of this study, first, through natural disasters and radioactive contamination monitors produce fast and accurate response function can result in improved quality and productivity. Second, the size of the plant required to maintain the measurement data can save time and expense savings. Finally, plant managers can improve work efficiency.
Development of Liquid Crystal Optic Modulation Based X-ray Dosimeter by Using CdS Sensor
Noh, Si-Cheol ; Kang, Sang-Sik ; Jung, Bong-Jae ; Choi, Il-Hong ; Kim, Hyun-Hee ; Cho, Chang-Hoon ; Park, Jun-Hong ; Park, Ji-Koon ;
Journal of the Korean Society of Radiology, volume 5, issue 6, 2011, Pages 357~361
DOI : 10.7742/jksr.2011.5.6.357
In this study, the liquid-crystal optical modulation X-ray detection system using a CdS which is a family of II-IV compound semiconductor was proposed. The system consist of the detector, the signal processing part, the liquid-crystal driving parts, microcontroller, and I/O parts, and was designed to be suitable for miniaturization and portable. In addition, the system can measure a wide range X-ray by using the detecting range selection. In order to evaluate the performance of the proposed system, the CdS sensor's output characteristics were confirmed in accordance with changes of dose, and excellent correlation was determined. And also, the optical penetration ratio was discussed in accordance with changes of the applied voltage by measuring the change of the liquid-crystal in accordance with changes of the applied voltage. Through these results, the characteristics of the liquid-crystal optical modulation system such as the excellent reproducibility and the noise immunity were confirmed. And we considered that the CdS cell-based liquid-crystal optical modulated portable X-ray detection system could be applied to compact, low-cost, portable system.
Relationship Analysis of Osteoporosis and Body Mass Index(BMI) in the Middle-Aged Women
Lim, Jong-Duek ; Jung, Jae-Eun ; Park, Cheol-Woo ; Dong, Kyung-Rae ; Kim, Ho-Sung ; Kim, Sun-Geun ;
Journal of the Korean Society of Radiology, volume 5, issue 6, 2011, Pages 363~367
DOI : 10.7742/jksr.2011.5.6.363
Generally, the osteoporosis of a middle-aged women have been reported that was a high risk in underweight, but the obese women have feasible osteoporosis. Therefor, the subjects were 120 middle-aged women that were diagnosed with osteoporosis in the bone mineral densitometer (BMD), this study was done for the purpose of analyzing the relationship between osteoporosis and body mass index (BMI) of the middle-aged women. We were determined BMI which was less than 18.5 underweight, 18.5 to 22.9 normal, 23.0 to 24.9 overweight, 25.0 to 29.9 obesity and extremely obesity were more than 30. When we examined the BMI distribution of the subjects, it was 2 women (1.7%) for underweight, 18 women (15.0%) for normal, 19 women (15.8%) for overweight, 75 women (62.5%) for obesity and 6 women (5.0%) for extremely obesity. Also, the relationship between osteoporosis and BMI of the subjects, it was the osteoporosis in 13 cases out of 18 (72.2%) with normal, in 14 case out of 19 (73.7%) with overweight, in 63 case out of 75 (84%) with obesity, in 5 case out of 6 (83.3%) with extremely obesity, besides, the osteoporosis usually marks the highest in a BMI with obesity. In conclusion, the result of analyzing the relationship between osteoporosis and BMI, we found out that the osteoporosis of the middle-aged women was high risk with obesity, and that was mostly higher the osteopenia rather than osteoporosis.
A Study on the Appropriate Reconstruction of the CBCT Images of Mandibular Canals
Jeong, Cheon-Soo ; Mo, Eun-Hee ; Lee, Gee-Heun ; Han, Beom-Hee ; Kim, Seung-Chul ; Kim, Jung-Sam ; Lim, Cheong-Hwan ;
Journal of the Korean Society of Radiology, volume 5, issue 6, 2011, Pages 369~375
DOI : 10.7742/jksr.2011.5.6.369
In dental radiography, panoramic views cause distortion and thus may bring about inaccurate results in the process of quantitative analysis. In this connection, there has recently been an increasing use of cone beam computed tomography (CBCT) that is known to provide high-resolution images and positional information. In this study, a dental computed tomography unit, 'DCT-90-P IMPLAGRAPHY (Vatech, Korea)', was applied to 20 patients for 24 seconds respectively, with a tube voltage of 85kVp and a tube current of 7mA. The data of CBCT were three-dimensionally reconstructed by use of a computer program, and were histomorphometrically analyzed. The results showed that the diameter of mandibular canal is less distorted at a certain inclination of the mandibular body. The image tends to seem more distended in proportion to the distance between the subject and film. Also, the image tends to be affected according as it is out of focus. In conclusion, it requires that the image should be reconstructed in light of anatomic position and structure.
An Assessment of Entrance Surface Dose Using the nanoDot Dosimeter
Kim, Jong-Eon ; Im, In-Chul ; Park, Cheol-Woo ;
Journal of the Korean Society of Radiology, volume 5, issue 6, 2011, Pages 377~381
DOI : 10.7742/jksr.2011.5.6.377
The purpose of this study is an assessment between the measured value of the nanoDot dosimeter and the calculated value of Non Dosimeter Dosimetry-Method(NDD-M) for entrance surface dose in general radiography. Measurement and calculation of the entrance surface doses were performed for head(AP), abdomen(AP), pelvis(AP), thoracic spine(AP) and lumbar spine(AP). As a result, the relative ratios of the measured value to the calculated value were acquired 1.5-2.1 for each region. Reproducibility acquired 0.035 as a coefficient of variation.
Monte Carlo Simulation for absorbed dose in PMMA phantom during the low-energy X-ray irradiation
Kim, Sang-Tae ; Kang, Sang-Koo ; Kim, Chong-Yeal ;
Journal of the Korean Society of Radiology, volume 5, issue 6, 2011, Pages 383~389
DOI : 10.7742/jksr.2011.5.6.383
This study offered a new method to calculate absorbed dose of actual patients through Monte Carlo Simulation by using the linkage of Geant4 and DICOM, and, the experimental value of absorbed dose at the center and Geant 4 simulation result according to the depth of PMMA mock phantom were compared by using MOSEF in order to verify Geant4 calculation code. In the area where there was no air space between the irregular gap due to incomplete compression of PMMA slab, the differences were
respectively. Excluding the error due to incomplete compression of PMMA mock phantom, the calculation values of the Monte Carlo simulation by linkage of Geant4 and DICOM was the same.
A Case of Atypical Pathogen Pneumonia, associated with Recurrent into Diffuse Pneumonic Consolidation
Oh, Jong-Kap ;
Journal of the Korean Society of Radiology, volume 5, issue 6, 2011, Pages 391~400
DOI : 10.7742/jksr.2011.5.6.391
Pneumonia is an infection of the lungs and respiratory system and can be classified by a variety of factors such as infectious agents, etiology, infection area, and other criteria. From a 46-year-old male, who was suspected of being infected with atypical pathogen pneumonia and underwent such tests as serological testing, examination of sputum, urine examination, parasite examination, bronchoscopy, needle biopsy and so on, no significant abnormality was found. This patient also showed no specific symptoms like auscultatory abnormalities, high fever, nonproductive cough, muscle stiffness, sputum production, dyspnea. Prescription of broad-spectrum oral antibiotics and ant-parasitic didn't seem to be effective against bacterial and atypical pathogen. The patient's condition alternately repeated between natural cure and recurrence. The average healing process during which scarring, nodule recurrence and disappearance on the lungs happened was about 20 days. Chest radiography and chest high resolution computerized tomographic scans(HRCT scan) was performed to depict parenchymal aberrations and demarcate the extent and distribution of atypical pathogen pneumonia. As a result, chest radiography did not show the specific symptoms, whereas areas of opacity (seen as white) which represent consolidation were revealed in chest HRCT scan. This indicates that only chest radiography is not that useful for early diagnosis of atypical pathogen pneumonia in patients, since it can't show exactly what the symptom is because of the barriers such as diaphragm, liver, and spine. Therefore, it is desirable that chest HRCT should be used in the diagnosis to compare with the results of chest radiography. Here, report with literature investigations the case of recurrent atypical pathogen pneumonia.
Signal to Noise Ratio of MR Spectrum by variation echo time : comparison of 1.5T and 3.0T
Kim, Sung-Gil ; Lee, Kyu-Su ; Rim, Che-Pyeong ;
Journal of the Korean Society of Radiology, volume 5, issue 6, 2011, Pages 401~407
DOI : 10.7742/jksr.2011.5.6.401
The purpose of this study is to know the differences of MR spectra, obtained from normal volunteers by variable TE value, through the quantitative analysis of brain metabolites by peak integral and SNR between 1.5T and 3.0T, together with PRESS and STEAM pulse sequence. Single-voxel MR proton spectra of the human brain obtained from normal volunteers at both 3.0T MR system (Magnetom Trio, SIEMENS, Germany) and 1.5T MR system (Signa Twinspeed, GE, USA) using the STEAM and PRESS pulse sequence. 10 healthy volunteers (3.0T:3 males, 2 females; 1.5T : 3 males, 2 females) with the range from 22 to 30 years old (mean 26 years) participated in our study. They had no personal or familial history of neurological diseases and had a normal neurological examination. Data acquisition parameters were closely matched between the two field strengths. Spectra were recorded in the white matter of the occipital lobe. Spectra were compared in terms of resolution and signal-to-noise ratio(SNR), and echo time(TE) were estimated at both field strengths. Imaging parameters was used for acquisition of the proton spectrum were as follow : TR 2000msec, TE 30ms, 40ms, 50ms, 60ms, 90ms, 144ms, 288ms, NA=96, VOI=
. As the echo times were increased, the spectra obtained from 3.0T and 1.5T show decreased peak integral and SNR at both pulse sequence. PRESS pulse sequence shows higher SNR and signal intensity than those of STEAM. Especially, Spectra in normal volunteers at 3.0T demonstrated significantly improved overall SNR and spectral resolution compared to 1.5T(Fig1). The spectra acquired at short echo time, 3T MR system shows a twice improvement in SNR compared to 1.5T MR system(Table. 1). But, there was no significant difference between 3.0Tand 1.5T at long TE It is concluded that PRESS and short TE is useful for quantification of the brain metabolites at 3.0T MRS, our standardized protocol for quantification of the brain metabolites at 3.0T MRS is useful to evaluate the brain diseases by monitoring the systematic changes of biochemical metabolites concentration in vivo.
Fabrication of X-ray monocapillary optics for soft X-ray fluorescence analysis
Cho, Hyung-Wook ; Park, Byung-Hoon ; Kim, Yong-Min ; Choi, Chul-Hee ; Choi, Seong-Hee ; Kim, Ki-Hong ; Chon, Kwon-Su ;
Journal of the Korean Society of Radiology, volume 5, issue 6, 2011, Pages 409~413
DOI : 10.7742/jksr.2011.5.6.409
An X-ray tube used an X-ray fluorescence analysis system has a low X-ray photon intensity which results in reducing measurement accuracy and increasing exposure time. These shortages can be overcame by using a monocapillary optics. A monocapillary optics was optimally designed for focusing the characteristic X-ray of tungsten (8.4 keV). The monocapillary optics can achieve a gain of 10 at the least. The monocapillary optics was fabricated by using puller and pyrex glass, raw material. In fabrication, a weigh of 45g and a temperature of
was loaded. The total fabrication time was 460 minutes. The fabricated capillary had 87 mm in length and maximum diameter of 300
and minimum diameter of 192
. When the fabricated monocapillary optics is applied to an X-ray fluorescence analysis system, the detection accuracy for soft elements, for example sulfur (S), will be improved.
The Measurement of Helper's Exposure Dose of nearby Radiographic Table in X-ray Examination
Eun, Sung-Jong ; Kim, Sung-Gil ; Min, Byung-Woon ;
Journal of the Korean Society of Radiology, volume 5, issue 6, 2011, Pages 415~420
DOI : 10.7742/jksr.2011.5.6.415
The purpose of this study is to know the exposure dose nearby table on the general radiography(skull AP, chest PA, abdomen AP, lumbar lateral, hip joint, knee joint) and to find the reducing it. We measured beside the 45cm and 75cm table center, and 70cm, 80cm, 130cm, 150cm height from the bottom. That were measured highly from the radiography of lumbar lateral, abdomen AP and hip joint as followed
at the 80cm height beside 45cm from the center of table. Measured doses were reduced in order of chest PA, abdomen, hipjoint, skull, knee joint projection. It appears exposure dose of nearby radiographic table was extremely low amount compared with limit of dose(1mSv). If it protected by Pb apron, exposure dose of assisting person will not be exceed a limit of dose. Conclusively, Wearing apron is very important to avoid radiation from the general radiography.
Assessment of dose effects on image quality at chest computed radiography
Kang, Bo-Sun ;
Journal of the Korean Society of Radiology, volume 5, issue 6, 2011, Pages 421~426
DOI : 10.7742/jksr.2011.5.6.421
This research was accomplished to assess dose effects on image quality at computed radiography (CR). The ultimate target of the research was finding optimized exposure that provides necessary image quality for the clinical chest diagnosis. Modulation transfer function (MTF), normalized noise power spectrum (NNPS), and Noise equivalent quanta (NEQ) corresponding to the different doses were measured for the assessment of image quality. The preparation of "edge test device" used in MTF measurement and experimental geometry setup were followed by the recommendations of International Electrotechnical Commission (IEC). The experimental results show the necessary image quality can be achieved even at a half of the automatic exposure control (AEC) setting dose for chest diagnosis. It means that the patient exposure can be reduced dramatically by using optimized dose.