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Study of Variation of Internal Taget Volume between 4DCT and Slow-CT in Respiratory Patterns Using Respiratory Motion Phantom

Lee SS, Choi SH, Min CK, Ji YH, Kim MS, Yoo HJ, Kim CH, Kim KB

The objective of this study is to investigate the difference of ITV lengths and ITVs between 4DCT and Slow-CT images according to respiratory patterns using a respiratory motion phantom. The...
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Determining Ion Collection Efficiency in a Liquid Ionization Chamber in Co-60 Beam

Choi SH, Kim CH

Liquid ionization chamber is filled with liquid equivalent material unlike air filled ionization chamber. The high density material allow very small-volume chamber to be constructed that still have a sufficiently...
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Study of Scatter Influence of kV-Conebeam CT Based Calculation for Pelvic Radiotherapy

Yoon K, Kwak J, Cho B, Kim Y, Lee S, Ahn S, Nam S

The accuracy and uniformity of CT numbers are the main causes of radiation dose calculation error. Especially, for the dose calculation based on kV-Cone Beam Computed Tomography (CBCT) image, the...
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Evaluation of Dosimetric Characteristics of Reproducibility, Linearity and Dose Dependence of Optically Stimulated Luminescence Dosimeters in Co-60 Gamma-rays

Han SC, Choi SH, Park S, Kim CH, Jung H, Kim MS, Yoo HJ, Kim CH, Ji YH, Yi CY, Kim KB

We aimed to evaluate the dosimetric characteristics of reproducibility, linearity and dose dependence of optical stimulated luminance dosimeter (OSLD) in the Co-60 Gamma-rays and to analyze with a precedent study...
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Development of Dose Verification Method for In vivo Dosimetry in External Radiotherapy

Hwang UJ, Baek TS, Yoon M

The purpose of this study is to evaluate the developed dose verification program for in vivo dosimetry based on transit dose in radiotherapy. Five intensity modulated radiotherapy (IMRT) plans of...
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The Output Factor of Small Field in Multileaf Collimator of 6 MV Photon Beams

Lee HJ, Choi TJ, Oh YK, Jeun KS, Lee YH, Kim JH, Kim OB, Oh SA, Kim SK, Yea JW

The IMRT is proper implement to get high dose deliver to tumor as its shape and selective approach in radiation therapy. Since the IMRT is performed as modulated the radiation...
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Measurement and Estimation for the Clearance of Radioactive Waste Contaminated with Radioisotopes for Medical Application

Kim C, Park M, Kim GS, Jung H, Jang S

The amounts of radioactive wastes to be disposed in the medical institute have been increased due to development of radiation diagnosis and therapy rapidly. They are produced mostly by the...
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Assessment for the Temperature according to the Electrode Diameter of Radio Frequency Hyperthermia Using Agar Phantom

Lee YH, Oh YK, Kim HY, Jeon KS, Choi EC, Park SG, Kim OB, Kim JH

Hyperthermia is effective treatment modality when it combine with the radiotherapy treatment. It is important to verify the temperature distribution of (patient's) body for the safety and effective treatment during...
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