• Journal of radiological science and technology
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• v.20 no.1
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• pp.61-64
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• 1997

• Journal of radiological science and technology
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• v.17 no.1
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• pp.65-70
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• 1994

• Journal of radiological science and technology
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• v.17 no.1
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• pp.71-76
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• 1994

• Journal of radiological science and technology
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• v.19 no.2
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• pp.67-70
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• 1996

• Journal of The Korean Radiological Technologist Association
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• v.28 no.1
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• pp.6-22
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• 2002

This study is carried out to get to professional standards that is reqested on clinical medicine for graduates of 3-year radiological technology department, to prepare for specialist system that is planed by radiological technologist association, and to d

• Journal of radiological science and technology
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• v.19 no.2
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• pp.15-44
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• 1996

• Korean Journal of Digital Imaging in Medicine
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• v.13 no.4
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• pp.185-189
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• 2011

To assess the prevalence of various radiological reduction methods for childhood intussusception in training hospitals by means of a nationwide phone survey, and to demonstrate recent trends in this area by comparing the findings with those obtained in a survey conducted. $BaTiO_3$ system was prepared by using fabrication of classical conditioning ceramics. Polycrystalline and surface structure characteristics of the specimens were measured by X-ray diffraction, SEM(Scanning Electron Microscopy) and EDAX (Energy Dispersive Spectrometer), respectively.

• Journal of radiological science and technology
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• v.16 no.2
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• pp.73-79
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• 1993

• Journal of Radiopharmaceuticals and Molecular Probes
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• v.6 no.2
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• pp.102-115
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• 2020

In the state of Positronium (Ps), which is an unstable material created by the temporary combination of electrons and positrons, the imaging technology through photo-conversion methodology is emerging as a new research theme under resonance conditions through terahertz electromagnetic waves. Normally, Positronium can be observed in the positron emission computed tomography (PET) process when an unstable, separate state that remains after the pair annihilation of an electron and a positron remains. In this study, terahertz (THz) waves and Cherenkov radiation (CR) are generated using the principle of ponderomotive force in the plasma wake-field acceleration, and electrons and positrons are simultaneously generated by using a relativistic electron beam without using a PET device. We confirm the possibility of Positronium photoconversion technology in terahertz electromagnetic resonance conditions through experimental studies that generate an unstable state. Here, a relativistic electron beam (REB) energy of 0.5 MeV (γ=2) was used, and the terahertz wave frequencies is G-band. Meanwhile, a THz wave mode converting three-stepped axicon lens was used to apply the photoconversion technology. Through this, light emission in the form of a luminescence-converted Bessel beam can be verified. In the future, it can be used complementarily with PET in nuclear medicine in the field of medical imaging.

• Journal of radiological science and technology
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• v.20 no.2
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• pp.28-33
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• 1997

For the Evaluation of X-ray image intensifier, we measured radiation dose at input of I. I., brightness and fluorescence at output of I. I. by using X-ray exposure meter, optometer and fluorescence meter for the relative conversion factor. Especially, by using fluorescence meter, we could easily get relative conversion factor without having regulated machine by JIS. Since using, the quality of image intensifier is going down. Consequently, it needs continuous quality maintenance.