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Chamber-to-chamber Variations in the Same Type of a Cylindrical Chamber for the Measurements of Absorbed Doses

Kim SH, Huh H, Choi SH, Kim HJ, Lim C, Shin DO, Choi J

  • KMID: 2243959
  • Korean J Med Phys.
  • 2010 Mar;21(1):120-125.
For the measurements of an absorbed dose using the standard dosimetry based on an absorbed dose to water the variety of factors, whether big, small, or tiny, may influence the...
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Development of Preliminary Quality Assurance Software for GafChromic(R) EBT2 Film Dosimetry

Park JY, Lee JW, Choi KS, Hong S, Park BM, Bae YK, Jung WG, Suh TS

  • KMID: 2243958
  • Korean J Med Phys.
  • 2010 Mar;21(1):113-119.
Software for GafChromic EBT2 film dosimetry was developed in this study. The software provides film calibration functions based on color channels, which are categorized depending on the colors red, green,...
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Development of Novalis Quality Assurance Protocol for Radiosurgery

Lee DJ, Lee KN, Lee S, Lee SH, Kim DH

  • KMID: 2243957
  • Korean J Med Phys.
  • 2010 Mar;21(1):99-112.
In Republic of Korea, there are many Quality Assurance protocol for general radiation treatment machine such as linac. However, Quality Assurance protocol for radiosurgery treatment system is not ready perfectly....
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Development of a High Resolution SPECT Detector with Depth-encoding Capability for Multi-energy Imaging: Monte Carlo Simulation

Beak CH, Hwang JY, Lee SJ, Chung YH

  • KMID: 2243956
  • Korean J Med Phys.
  • 2010 Mar;21(1):93-98.
The aim of this work was to establish the methodology for event positioning by measuring depth of interaction (DOI) information and to evaluate the system sensitivity and spatial resolution of...
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Skin Damage Sustained During Head-and-Neck and Shoulder Radiotherapy Due to the Curvature of Skin and the Use of Immobilization Mask

Kim S, Jeung TS, Lim S, Park YM, Park D

  • KMID: 2243955
  • Korean J Med Phys.
  • 2010 Mar;21(1):86-92.
The purpose of this study was to measure curvature contour skin dose using radiochromic film and TLD for a conventional open field. We also attempted to quantify the degradation of...
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Study on the Compatibility for an Ir-192 Source Manufactured by Korea Atomic Energy Research Institute (KAERI) in GammaMed Brachytherapy Machine

Jeong DH, Lee KK, Kim SK, Moon SR

  • KMID: 2243954
  • Korean J Med Phys.
  • 2010 Mar;21(1):78-85.
The compatibility with GammaMed-12i brachytherapy machine for an Ir-192 encapsulated source (IRRS20, KAERI, Korea) manufactured by Korea atomic energy research institute (KAERI) has been investigated. As a mechanical testing of...
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Assessment of Osteoporosis Based on Changes in SNR and ADC Values on MR Diffusion Weighted Images

Cho JH, Kim YS

  • KMID: 2243953
  • Korean J Med Phys.
  • 2010 Mar;21(1):70-77.
This study tested how S/N (Signal to Noise Ratio) ratios and ADC (apparent diffusion coefficient) values vary with different T-scores in a group of patients with osteoporosis. Based on DEXA...
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Dosimetry by Using EBT2 Film for Total Skin Electron Beam Therapy (TSET)

Hwang UJ, Rah JE, Jeong H, Ahn SH, Kim DW, Lee SY, Lim YG, Yoon M, Shin DH, Lee SB, Park SY, Pyo HR, Chung WK

  • KMID: 2243952
  • Korean J Med Phys.
  • 2010 Mar;21(1):60-69.
For treatment of Total Skin Electron beam Therapy (TSET), measurement of dose at various conditions is need on the contrary to usual radiotherapy. When treating TSET with modified Stanford technique...
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SNR and ADC Changes at Increasing b Values among Patients with Lumbar Vertebral Compression Fracture on 1.5T MR Diffusion Weighted Images

Cho JH, Park CS, Lee SY, Kim BH

  • KMID: 2243951
  • Korean J Med Phys.
  • 2010 Mar;21(1):52-59.
To examine among patients with vertebral compression fracture the extent to which signal-to-noise ratio (SNR) and Apparent Diffusion Coefficient (ADC) values at the lumbar vertebral compression fracture site vary on...
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An Empirical Study on Quantitative Evaluation of Cognitive Function

Ryu WS, Kim H, Chung ST

  • KMID: 2243950
  • Korean J Med Phys.
  • 2010 Mar;21(1):42-51.
Imaging studies using MRI, PET, and/or MEG have been primary evaluation methods to quantitatively assess cognitive function. Recent advances in computational technology and information technology may allow a novel evaluation...
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Neurochemical Profile Quantification of Regional Adult Mice Brain Using: ex vivo 1H High-Resolution Magic Angle Spinning NMR Spectroscopy

Lee DW, Woo DC, Lee SH, Kim SY, Kim GY, Rhim HS, Choi CB, Kim HY, Lee CW, Choe BY

  • KMID: 2243949
  • Korean J Med Phys.
  • 2010 Mar;21(1):35-41.
The purpose of this study is to quantitate regional neurochemical profile of regional normal adult mice brain and assess regional metabolic differences by using ex vivo 1H high-resolution magic angle...
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Fabrication and Optimization of a Fiber-optic Dosimeter for Proton Beam Therapy Dosimetry

Jang KW, Cho DH, Yoo WJ, Seo JK, Lee B, Hwang EJ, Shin D, Park SY

  • KMID: 2243948
  • Korean J Med Phys.
  • 2010 Mar;21(1):29-34.
In this study, we have fabricated a fiber-optic dosimeter for a proton beam therapy dosimetry. We have measured scintillating lights with the various kinds of organic scintillators and selected the...
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Analysis of 1H Magnetic Resonance Spectroscopy Pattern in Invasive Ductal Carcinoma of Breast

Cho JH, Park CS, Lee SY, Kim BH

  • KMID: 2243947
  • Korean J Med Phys.
  • 2010 Mar;21(1):22-28.
To evaluate the potential value of 1H Magnetic resonance spectroscopy (MRS) for detecting and characterizing invasive ductal carcinoma of breast. We conducted 1H Magnetic resonance spectroscopy (MRS), using a 3.0T...
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Comparison of Radioactivity Measurement with Radionuclide Calibrators in Nuclear Medicine Centers

Son HK, Kim JH, Lim C, Yang HK, Park KJ, Oh HJ, Kim HJ, Kim DS

  • KMID: 2243946
  • Korean J Med Phys.
  • 2010 Mar;21(1):16-21.
To acquire good image quality and to minimize unnecessary radiation dose to patients, it is important to ensure that the radiopharmaceutical administered is accurately measured. Quality control of radionuclide calibrators...
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Measurement and Evaluation of Scatter Fractions for Digital Radiography with a Beam-Stop Array

Choi YN, Cho HM, Kim YS, An SJ, Kim HJ

  • KMID: 2243945
  • Korean J Med Phys.
  • 2010 Mar;21(1):9-15.
Scatter radiation considerably affects radiographic image quality by reducing image contrast and contributing to a non-uniform background. Images containing a large portion of scatter radiation may result in an incorrect...
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A Study on Dose Response of MAGAT (Methacrylic Acid, Gelatin Gel and THPC) Polymer Gel Dosimeter Using X-ray CT Scanner

Jung JY, Lee CI, Min JH, Kim YL, Lee SY, Suh TS

  • KMID: 2243944
  • Korean J Med Phys.
  • 2010 Mar;21(1):1-8.
In this study, we evaluated the dose response of MAGAT (Methacrylic Acid Gelatin gel and THPC) normoxic polymer gel dosimeters based on the X-ray CT scanner. To perform this study,...
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