MTF, NPS, DQE를 통한 관전압과 Cu-filter 두께에 따른 영상 평가 (The)effect of x-ray kVp and Cu-filter thickness at x-ray examination image using MTF, NPS and DQE measurenments원문보기
의료영상에서 디지털화가 되면서 디지털 방사선 검출기는 여러 의료영상 획득 장치에서 이용되어 왔다. 본 연구는 비정질 평판형 검출기를 이용하여 얻어진 영상의 평가를 통해서 영상평가의 주요인자인 MTF ( Modulation Transfer Function ), NPS ( Noise Power Spectrum ), ...
의료영상에서 디지털화가 되면서 디지털 방사선 검출기는 여러 의료영상 획득 장치에서 이용되어 왔다. 본 연구는 비정질 평판형 검출기를 이용하여 얻어진 영상의 평가를 통해서 영상평가의 주요인자인 MTF ( Modulation Transfer Function ), NPS ( Noise Power Spectrum ), DQE ( Detective Quantum Efficiency ) 의 값을 도출하여 의료 영상평가에 도움이 되고자 함에 목적이 있다. 비정질 평판형 검출기를 이용하여 얻어진 영상의 평가를 위해서MTF, normalized NPS, photon fluence , DQE 를 얻는다. Image process는 MATLAB를 이용하여 일련의 파라미터 계산 처리를 했다. 본 실험의 평가 파라미터를 통해서 임상에서의 Image quality를 유지하는데 도움이 될 것이라고 생각한다.
의료영상에서 디지털화가 되면서 디지털 방사선 검출기는 여러 의료영상 획득 장치에서 이용되어 왔다. 본 연구는 비정질 평판형 검출기를 이용하여 얻어진 영상의 평가를 통해서 영상평가의 주요인자인 MTF ( Modulation Transfer Function ), NPS ( Noise Power Spectrum ), DQE ( Detective Quantum Efficiency ) 의 값을 도출하여 의료 영상평가에 도움이 되고자 함에 목적이 있다. 비정질 평판형 검출기를 이용하여 얻어진 영상의 평가를 위해서MTF, normalized NPS, photon fluence , DQE 를 얻는다. Image process는 MATLAB를 이용하여 일련의 파라미터 계산 처리를 했다. 본 실험의 평가 파라미터를 통해서 임상에서의 Image quality를 유지하는데 도움이 될 것이라고 생각한다.
Time passes, medical use field of X-ray became wide and X-ray reflex appliance technology had contributed in human Health and Welfare by Film system image to clinical medicine that diagnoses human body. Digital Radiographic system that film is no necessity augmenting quality of reflex and data's eff...
Time passes, medical use field of X-ray became wide and X-ray reflex appliance technology had contributed in human Health and Welfare by Film system image to clinical medicine that diagnoses human body. Digital Radiographic system that film is no necessity augmenting quality of reflex and data's efficiency in existent Film system and transmission system (Picture Archiving and Communication System, PACS) and computer is development in the together hospital of reflex is detected popularized in present presence. A digital radiography imaging system based on flat-panel detector has some advantages compared with the conventional screen-film system. In this study, a flat-panel detector based on amorphous silicon was integrated into projection radiography system and algorithms for the corrections were implemented. Basic image quality parameters evaluate Modulation Transfer Function (MTF), Noise Power Spectrum (NPS) and Detective Quantum Efficiency (DQE) as a main factor of image quality evaluation. MTF, NPS and DQE have described useful descriptors of resolution, noise and signal to noise ratio transfer ability. The obtained results that value of digital radiation detector using the amorphous flat-panel detector, and expected to be accepted in the clinical applications.
Time passes, medical use field of X-ray became wide and X-ray reflex appliance technology had contributed in human Health and Welfare by Film system image to clinical medicine that diagnoses human body. Digital Radiographic system that film is no necessity augmenting quality of reflex and data's efficiency in existent Film system and transmission system (Picture Archiving and Communication System, PACS) and computer is development in the together hospital of reflex is detected popularized in present presence. A digital radiography imaging system based on flat-panel detector has some advantages compared with the conventional screen-film system. In this study, a flat-panel detector based on amorphous silicon was integrated into projection radiography system and algorithms for the corrections were implemented. Basic image quality parameters evaluate Modulation Transfer Function (MTF), Noise Power Spectrum (NPS) and Detective Quantum Efficiency (DQE) as a main factor of image quality evaluation. MTF, NPS and DQE have described useful descriptors of resolution, noise and signal to noise ratio transfer ability. The obtained results that value of digital radiation detector using the amorphous flat-panel detector, and expected to be accepted in the clinical applications.
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