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- 사전포화펄스
- T2WI
- tof
- MRI image parameters
- no phase wrap
- fast spin echo
- saturation pulse
- FSE
- aliasing artifact
- T2 이완
- TR TE
- 방사선사나라
- saturation band
- T1WI
- fractional echo
- radiographer nara
- T1강조영상
- T2강조영상
- receive bandwidth
- wrap around artifact
- 자기공명혈관조영술
- MRA
- MRI gantry
- chemical shift artifact
- 동위상 탈위상
- ECG gating
- MR angiography
- slice gap
- K-space
- MRI 영상변수
- Today
- Total
목록MRI image parameters (3)
방사선사나라 Radiographer Nara
[MRI] (영/한) Image parameter(5) - Bandwidth , Saturation Pulse / 영상변수(5) - 주파수폭, 포화펄스
(영어/영문/English) 9. Bandwidth It refers to the range of frequencies and uses Hertz units The receiver bandwidth is an important factor in determining the SNR of an image, and it means the range that receives the echo signal from the tissue receiving the RF pulse and is expressed as ± Hz based on the center frequency. SNR = √ (old bandwidth / new bandwidth) When the receiver bandwidth is wide, noi..
[MRI] (영/한) Image parameter(4) - Slice thickness , Slice gap / 영상변수(4) - 절편두께, 절편간격
(영어/영문/English) 7. Slice thickness Width of the slice to be scaned Adjusting the width of the slice by passing a positive current to one side of the slice selection gradient coil and a negative current to the other side. (If a high current is passed, the thickness of the slice becomes thin, and when a low current is passed, the thickness of the slice becomes thick.) As the thickness of the slice..
[MRI] (영/한) Image parameter(3) - Matrix , FOV / 영상변수(3) - 매트릭스, 영상영역
(영어/영문/English) 5. Matrix It means the number of pixels arranged horizontally and vertically in the image area The smallest unit constituting a matrix of 2D images - pixel (picture cell), 3D - voxel (volume cell) The size of the matrix is in the form of 'frequency encoding number × phase encoding number' of the pixel. Increasing the matrix increases the number of pixels per unit area and incre..