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3.0T 자기공명영상을 이용한 잡음전력스펙트럼 특성 평가

Evaluation of Noise Power Spectrum Characteristics by Using Magnetic Resonance Imaging 3.0T

방사선기술과학 2021년 44권 1호 p.31 ~ 37
민정환, 정회원, 김승철,
소속 상세정보
민정환 ( Min Jung-Whan ) - Shingu University Department of Radiological Technology
정회원 ( Jeong Hoi-Woun ) - Baekseok Culture University Department of Radiological Science
김승철 ( Kim Seung-Chul ) - Korea University Institute for Health Science

Abstract


This study aim of quantitative assessment of Noise Power Spectrum(NPS) and image characteristics of by acquired the optimal image for noise characteristics and quality assurance by using magnetic resonance imaging(MRI). MRI device was (MAGNETOM Vida 3.0T MRI; Siemense healthcare system; Germany) used and the head/neck shim MR receive coil were 20 channels coil and a diameter 200 mm hemisphere phantom. Frequency signal could be acquired the K-space trajectory image and white image for NPS. The T2 image highest quantitatively value for NPS finding of showed the best value of 0.026 based on the T2 frequency of 1.0 mm-1. The NPS acquired of showed that the T1 CE turbo image was 0.077, the T1 CE Conca2 turbo image was 0.056, T1 turbo image was 0.061, and the T1 Conca2 turbo image was 0.066.
The assessment of NPS image characteristics of this study were to that could be used efficiently of the MRI and to present the quantitative evaluation methods and image noise characteristics of 3.0T MRI.

키워드

자기공명영상; 잡음전력스펙트럼; 변조전달함수; 품질보증; 잡음
Magnetic resonance imaging; Noise power spectrum; Modulation transfer function; Quality assurance; Noise

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