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library:mri_standard_parameters [2025/05/06 15:21] – scottlibrary:mri_standard_parameters [2025/06/25 14:20] (current) – scott
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 =====MRI Standard Parameters===== =====MRI Standard Parameters=====
 ^Parameter^T1 SE/FSE^T2 FSE^STIR IR-FSE^T2 FLAIR IR-FSE^GRE^DWI^ ^Parameter^T1 SE/FSE^T2 FSE^STIR IR-FSE^T2 FLAIR IR-FSE^GRE^DWI^
-|TR|400-700|3000+ (2000+ if Restore Pulse)|3000+|9000+|VAR|8000+|+|TR|400-700|3000+ (1500+ if Restore Pulse)|3000+|9000+|VAR|8000+|
 |TE|MIN; <30|85-120|40-70|90-120|In phase|MIN; ~70-100| |TE|MIN; <30|85-120|40-70|90-120|In phase|MIN; ~70-100|
 |ETL|3-5 If FSE|16-24|12-16|16-28|N/A|N/A| |ETL|3-5 If FSE|16-24|12-16|16-28|N/A|N/A|
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 |SLICE THICKNESS|2 - 3mm|2 - 3mm|2 - 3mm|2 - 3mm|2 - 3mm|2 - 5mm| |SLICE THICKNESS|2 - 3mm|2 - 3mm|2 - 3mm|2 - 3mm|2 - 3mm|2 - 5mm|
 |SLICE SPACING|10%|10%|10%|10%|10%|10%| |SLICE SPACING|10%|10%|10%|10%|10%|10%|
-|NOTES| -Pre and post contrast \\ -Choose FSE for metal artifacts| -High ETL may cause blurring \\ -If using FatSat, decrease TE to 70-80 -TE 500+ for myelo| \\ -Superior FatSat over large FOV \\ -Do not scan post contrast -Low inherent SNR| \\ -Sensitive to subtle contrast  \\ -Scan with 2 concat \\ -Keep TR very long|Many variants \\ -T1: FLASH;VIBE \\ -T2*:GRE;MEDIC \\ -T2* for Hemo \\ -Can be 3D for thin slice \\ -Can be 3D for isotropic|-Low resolution \\ -Low SNR \\ -Not sensitive to gad \\ -Scan for ischemia \\ -EPI artifacts|+|NOTES| -Pre and post contrast \\ -Choose FSE for metal artifacts| -High ETL may cause blurring \\ -If using FatSat, decrease TE to 70-80 -TE 500+ for myelo| \\ TI 150-180ms for 1.5T\\ -Superior FatSat  over large FOV \\ -May suppress lesions if scanned post contrast\\ -Low inherent SNR| \\ -Use Auto TI; approximately 2250ms \\ -Scan with 2 concat \\ -Keep TR very long|Many variants \\ -T1: FLASH;VIBE \\ -T2*:GRE;MEDIC \\ -T2* for Hemo \\ -Can be 3D for thin slice \\ -Can be 3D for isotropic|-Low resolution \\ -Low SNR \\ -Not sensitive to gad \\ -Scan for ischemia \\ -EPI artifacts|
  
 Provided by Scott Johnson, MS RT (R)(MR) - edited by meuon, a weird spinning particle in the machine. Provided by Scott Johnson, MS RT (R)(MR) - edited by meuon, a weird spinning particle in the machine.