mri artefacts
Transcription
mri artefacts
MRI ARTEFACTS Raimo Sepponen Motion artefact chickscope.beckman.uiuc.edu Motion artefact MRI Clinics of North America: Vol.7, No. 4: Nov. 1999 Motion Artefact MRI Clinics of North America: Vol.7, No. 4: Nov. 1999 Instability artefact chickscope.beckman.uiuc.edu Vascular pulsation artefact MRI Clinics of North America: Vol.7, No. 4: Nov. 1999 Respiration and vascular artefacts MRI Clinics of North America: Vol.7, No. 4: Nov. 1999 Respiration and cardiac artefacts: Respiration Oriented Phase Encoding (ROPE) MRI Clinics of North America: Vol.7, No. 4: Nov. 1999 Cardiac motion – ECG Gating MRI Clinics of North America: Vol.7, No. 4: Nov. 1999 Vascular pulsation MRI Clinics of North America: Vol.7, No. 4: Nov. 1999 CSF Flow artefact MRI Clinics of North America: Vol.7, No. 4: Nov. 1999 Gibbs Ringing - Truncation chickscope.beckman.uiuc.edu Truncation artefact MRI Clinics of North America: Vol.7, No. 4: Nov. 1999 Fat/Air interface, Aliasing MRI Clinics of North America: Vol.7, No. 4: Nov. 1999 Aliasing artefact MRI Clinics of North America: Vol.7, No. 4: Nov. 1999 RFI Interference BW 100 kHz BW 50 kHz chickscope.beckman.uiuc.edu RF Interference MRI Clinics of North America: Vol.7, No. 4: Nov. 1999 Random noise chickscope.beckman.uiuc.edu Quadrature error chickscope.beckman.uiuc.edu Digitizer Quantization - Low Dynamic Range chickscope.beckman.uiuc.edu RF Inhomogeneity chickscope.beckman.uiuc.edu Shimming Spin Echo Gradient Echo chickscope.beckman.uiuc.edu Susceptibility artefact chickscope.beckman.uiuc.edu Susceptibility artefact MRI Clinics of North America: Vol.7, No. 4: Nov. 1999 Susceptibility artefact MRI Clinics of North America: Vol.7, No. 4: Nov. 1999 Chemical shift artefact MRI Clinics of North America: Vol.7, No. 4: Nov. 1999 Fat/Water cancellation MRI Clinics of North America: Vol.7, No. 4: Nov. 1999 Clipping - ADC overflow Receiver overshoot MRI Clinics of North America: Vol.7, No. 4: Nov. 1999 Slice interference MRI Clinics of North America: Vol.7, No. 4: Nov. 1999