Maxwell Term Artifacts Due to Scanning with Flow Comp and Swap Phase and Frequency.

MRIQ: Maxwell Term Artifacts See long description The system is a 1.5T LX. The artifact seen here is due to running flow compensation while phase and frequency are swapped. Image Parameters Exam Description lumbar test Series Description Sagittal FSE T2 Anatomic Reference Scan Protocol Name Patient Weight (kg , Lb) 81 , 180 Image Type GE Advantage Windows Image Format Rectangular Image Matrix (pixels) 512 Image Suite ID #MRS1 Study number 540 Series number 3 Image number 7 Series Date & Time Jan 30, 1998 2:28:02 PM Image Date & Time Jan 30, 1998 2:28:03 PM Contrast information NO C Display FOV (mm) 260 Slice Thickness (mm) 4.0 Magnet Strength (Gauss) 15000 Number of excitations 4.0 Number of echoes 1 Flip Angle for GRASS(°) 90 TR (ms) 3300 TI (ms) 0 TE (ms) 98 TE2 (ms) 0 Center Freq.(0.1Hz) 638761410 Auto Center Freq(0.1Hz) 638761410 Auto Trans.Gain(0.1dB) 186 Prescan R1 Analog 11 Prescan R2 Digital 15 SAT fat/water/none 0 Variable Bandwidth(Hz) 32.0 Nb of slices in this group 12 Phase contr. flow axis 0 Phase contr. velocity encoding 0 Prescan Flag Auto Prescan Succeeded Pulse Seq. Name fse PSD Name FSE Coil Name LS456 Slice Location (mm) 1.0 Scan Spacing (mm) 1.0 Recon. x (mm) 1.0 Recon. y (mm) 0.0