- Precision Validation of Electromagnetic Physics in Geant4 Simulation for Proton Therapy
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Park SH, Rah JE, Shin JW, Park S, Yoon SC, Jung WG, Suh TS
- KMID: 1989078
- Korean J Med Phys.
- 2009 Dec;20(4):225-234.
Geant4 (GEometry ANd Tracking) provides various packages specialized in modeling electromagnetic interactions. The validation of Geant4 physics models is a significant issue for the applications of Geant4 based simulation in... -
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- Estimation of Inhomogeneity Correction Factor in Small Field Dosimetry
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Shin HJ, Kang YN, Jang J, Seo JH, Jung JY, Choi BO, Choi IB, Lee DJ, Kwon SI
- KMID: 1989082
- Korean J Med Phys.
- 2009 Dec;20(4):260-268.
In this study, we estimated inhomogeneity correction factor in small field. And, we evaluated accuracy of treatment planning and measurement data which applied inhomogeneity correction factor or not. We developed... -
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- Evaluation the Output Dose of Linear Accelerator Photon Beams by Blind Test with Dose Characteristics of LiF:Mg,Cu,P TLD
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Choi TJ, Lee HJ, Yie JW, Oh YG, Kim JH, Kim OB
- KMID: 1989087
- Korean J Med Phys.
- 2009 Dec;20(4):308-316.
To achieve the accurate evaluation of given absorbed dose from output dose of linear accelerator photon beam through investigate the characteristics of LiF:Mg,Cu,P TLD powder. This experimental TL phosphor is... -
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- A Study on Usefulness of Specific Agents with Liver Disease at MRI Imaging: Comparison with Ferucarbotran and Gd-EOB-DTPA Contrast Agents
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Lee JS, Goo EH, Park CS, Lee SY, Choi YS
- KMID: 1989079
- Korean J Med Phys.
- 2009 Dec;20(4):235-243.
The purpose of this experiment is to know the relation of the detection and characterization of liver's diseases as comparison of finding at MR imaging using a Ferucarbotran (SPIO) and... -
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- A Study on Compensation for Imaging Qualities Having Artifact with the Change of the Center Frequency Adjustment and Transmission Gain Values at 1.5 Tesla MRI
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Lee JS, Goo EH, Park CS, Lee SY, Lee HJ
- KMID: 1989080
- Korean J Med Phys.
- 2009 Dec;20(4):244-252.
The purpose of this study is to compensate for susceptibility and a ferromagnetic body artifact using CFA and TGV on MR Imaging. A total of 30 patients (15 men and... -
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- Estimation of CyberKnife Respiratory Tracking System Using Moving Phantom
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Seo JH, Kang YN, Jang JS, Shin HJ, Jung JY, Choi BO, Choi IB, Lee DJ, Kwon SI, Lim JS
- KMID: 1989089
- Korean J Med Phys.
- 2009 Dec;20(4):324-330.
In this study, we evaluated accuracy and usefulness of CyberKnife Respiratory Tracking System (SynchronyTM, Accuray, USA) about a moving during stereotactic radiosurgery. For this study, we used moving phantom that... -
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- Effects of the Variability of Individual Data on the Group Results; an Acupuncture Study Using fMRI
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Bae SI, Jahng GH, Ryu CW, Lim S
- KMID: 1989084
- Korean J Med Phys.
- 2009 Dec;20(4):277-289.
Recently, functional MRI has been used to investigate the neurobiological mechanisms of acupuncture and the specificity of acupoint. The group data tend to be regarded as more important than the... -
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- Quality Control of Radiation Dosimetry Service
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Lee JH, Lee SB, Chang KJ, Lee KY, Lee HK, Kim HJ, Jin GH
- KMID: 1989081
- Korean J Med Phys.
- 2009 Dec;20(4):253-259.
We have developed standards based on international criterions for the quality control of dose tested by the measurement institutions of individual exposure doses through improving the reliability of data on... -
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- The Study on the Use of a Cylindrical Ionization Chamber for the Calibration of a 6 MeV Electron Beam
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Kim SH, Huh H, Choi SH, Choi J, Kim HJ, Lim C, Shin DO
- KMID: 1989088
- Korean J Med Phys.
- 2009 Dec;20(4):317-323.
The standard dosimetry systems based on an absorbed dose to water recommend to use a planeparallel chamber for the calibration of such a low-megavoltage electron beam as a nominal energy... -
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- Evaluation of Unexposed Images after Erasure of Image Plate from CR System
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Lim BY, Park HS, Kim JH, Park KH, Kim HJ
- KMID: 1989075
- Korean J Med Phys.
- 2009 Dec;20(4):199-207.
It is important to initialize Image Plate (IP) completely for removing residual latent image by sodium lamp for reliability and repeatability of computed radiography (CR) system. The purpose of this... -
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- Study on the Small Fields Dosimetry for High Energy Photon-based Radiation Therapy
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Jeong HS, Han Y, Kum O, Kim CH
- KMID: 1989085
- Korean J Med Phys.
- 2009 Dec;20(4):290-297.
In case of radiation treatment using small field high-energy photon beams, an accurate dosimetry is a challenging task because of dosimetrically unfavorable phenomena such as dramatic changes of the dose... -
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- Dosimetric Characteristics of Edge Detector(TM) in Small Beam Dosimetry
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Chang KH, Lee BR, Kim YH, Choi KS, Lee JS, Park BM, Bae YK, Hong S, Lee JW
- KMID: 1989074
- Korean J Med Phys.
- 2009 Dec;20(4):191-198.
In this study, we evaluated an edge detector for small-beam dosimetry. We measured the dose linearity, dose rate dependence, output factor, beam profiles, and percentage depth dose using an edge... -
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- The Evaluation of Scattering Effects for Various Source Locations within a Phantom in Gamma Camera
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Yu AR, Lee YS, Kim JS, Kim KM, Cheon GJ, Kim HJ
- KMID: 1989077
- Korean J Med Phys.
- 2009 Dec;20(4):216-224.
(131)I is a radiological isotope being used widely for treatment of cancer as emitting gamma-ray and it is also applied to estimate the function of thyroid for its accumulation in... -
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- Evaluation on Protrusion of the Imaginary Prostate Volume Using Three-Dimensional Volume Rendering
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Seoung YH, Joo YH, Rhim JD, Choe BY
- KMID: 1989076
- Korean J Med Phys.
- 2009 Dec;20(4):208-215.
This study is to compare the accuracy of evaluation regarding the volume of the prostate, which three-dimensional volume rendering was produced the shape of protrusion, by measuring two kinds of... -
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- Estimation of Jaw and MLC Transmission Factor Obtained by the Auto-modeling Process in the Pinnacle3 Treatment Planning System
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Hwang T, Kang SK, Cheong KH, Park S, Lee M, Kim KJ, Oh DH, Bae H, Suh TS
- KMID: 1989083
- Korean J Med Phys.
- 2009 Dec;20(4):269-276.
Radiation treatment techniques using photon beam such as three-dimensional conformal radiation therapy (3D-CRT) as well as intensity modulated radiotherapy treatment (IMRT) demand accurate dose calculation in order to increase target... -
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- MR T2 Map Technique: How to Assess Changes in Cartilage of Patients with Osteoarthritis of the Knee
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Cho JH, Park CS, Lee SY, Kim BH
- KMID: 1989086
- Korean J Med Phys.
- 2009 Dec;20(4):298-307.
By using the MR T2 map technique, this study intends, first, to measure the change of T2 values of cartilage between healthy people and patients with osteoarthritis and, second, to... -
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