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Determination of Quality Factors for Cylindrical Ionization Chambers in kV X-rays: Review of IAEA Dosimetry Protocol and Monte Carlo Calculations and Measurements for N23333 and N30001 Chambers

Lee KK, Jeong DH, Lim C, Chang SK, Moon SR

  • KMID: 1591040
  • Korean J Med Phys.
  • 2005 Jun;16(2):53-61.
The quality factors for cylindrical ionization chambers for kV X-rays were determined by Monte Carlo calculation and measurement. In this study, the X-rays of 60~300 kV beam (ISO-4037) installed in...
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Neutron Generation from a 24 MV Medical Linac

Lee JO, Jeong DH, Kang JK

  • KMID: 1591056
  • Korean J Med Phys.
  • 2005 Jun;16(2):97-103.
The energy spectra and dose calculations were performed for secondary neutrons from a 24 MV LINAC using MCNPX code (V2, 4, 0). The energy spectra for neutrons and photons emitted...
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Characteristics of Detectors for Measurements of Photon Depth Doses in Build-Up Region

Kang SK, Cho BC, Park SW, Oh DH, Park HC, Kim SS, Bae H

  • KMID: 1591048
  • Korean J Med Phys.
  • 2005 Jun;16(2):77-81.
To determine the appropriate method out of various available methods to measure build-up doses, the measurements and comparisons of depth doses of build-up region including the surface dose were executed...
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Interstitial Photodynamic Therapy (PDT) Set-up for Treating Solid Tumor Using Laser Diode

Kim KH, Kim JK

  • KMID: 1591057
  • Korean J Med Phys.
  • 2005 Jun;16(2):104-109.
Photodynamic therapy (PDT) is one of the expectable current cure operation methods. Tumor tissue is treated by abundant oxygen in a body and generated singlet or free radical from exterior...
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The Analysis of a Cerrobend Compensator and a Electronic Compensator Designed by a Radiation Treatment Planning System

Song JY, Nah BS, Chung WK, Ahn SJ, Nam TK, Yoon MS

  • KMID: 1591051
  • Korean J Med Phys.
  • 2005 Jun;16(2):82-88.
In this study, the physical compensator made with the high density material, Cerrobend, and the electronic compensator realized by the movement of a dynamic multileaf collimator were analyzed in order...
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An Effect of Time Gating Threshold (TGT) on the Delivered Dose at Internal Organ with Movement due to Respiration

Kim YL, Chung JB, Chung WK, Hong S, Suh TS

  • KMID: 1591053
  • Korean J Med Phys.
  • 2005 Jun;16(2):89-96.
In this study, we investigated the effect of time gating threshold on the delivered dose at a organ with internal motion by respiration. Generally, the internal organs have minimum motion...
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Quality Assurance Program of Electron Beams Using Thermoluminescence Dosimetry

Rah JE, Suh TS, Kim GY, Jeong HK, Shin DO

  • KMID: 1591042
  • Korean J Med Phys.
  • 2005 Jun;16(2):62-69.
The purpose of this study has been performed to investigate the possibility of external audit program using thermoluminescence dosimetry for electron beam in korea. The TLD system consists of LiF...
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Comparison of Enhanced Dynamic Wedge with Physical Metal Wedge based on the Basic Dosimetric Parameters

Lee JW, Hong S, Choi KS, Chung JB, Choe BY, Jang HS, Suh TS

  • KMID: 1591044
  • Korean J Med Phys.
  • 2005 Jun;16(2):70-75.
For clinical implementation of Enhanced Dynamic Wedge (EDW), it is necessary to adequately analyze and commission its dosimetric properties in comparison to common physical metal wedge (MTW). This study was...
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