T1 SE / T1 TSE / T1 FSE Fat Saturated Post Contrast
MRI image appearance
The easiest way to identify T1 weighted fat saturated post gadolinium images is to look for adipose tissues (e.g. subcutaneous fat and fat in bone marrow) and blood vessels in the body (e.g arteries and veins in the brain, neck, chest, abdomen, upper limbs and lower limbs). Areas contain adipose tissues appear dark on T1 weighted fat saturated post gadolinium images. Blood vessels and pathologies with high vascularity appear bright on T1 weighted fat saturated post gadolinium images.
Tissues and their T1 fat saturated post gadolinium appearance
Fluids : – dark (Ureters and bladder appear as bright due to the contrast excretion)
Bone marrow : – dark
Muscles- gray
Moving blood : – bright
White matter : – whiter
Gray matter : – gray
Bone : – dark
Fat : – dark
Air : – dark
Use
- Very useful for pituitary imaging
- Very useful for spine imaging
- Very useful for pelvic imaging
- Very useful for anterior neck, orbits and face imaging
- Very useful for any musculoskeletal imaging
- Very useful for extremity imaging
Pathological appearance
Pathologies with adipose tissues content will appear dark on T1 fat saturated post gadolinium images (e.g. lipoma). Pathologies with hypervascularization will appear bright on T1 fat saturated post gadolinium images (e.g. tumours like hemangioma, Lymphangioma, hemangioendothelioma, Kaposi sarcoma, angiosarcoma, hemangioblastoma etc. and inflammatory processes like discitis, meningitis, synovitis, arthritis, osteomyelitis etc). Pathological processes with no vascularity will remain unenhanced (appear dark on a T1 fat saturated post gadolinium image).
T1 FAT SAT CORONAL POST CONTRAST SEQUENCE USED IN PITUITARY GLAND IMAGING
T1 FAT SAT AXIAL POST CONTRAST SEQUENCE USED IN ORBITS IMAGING
T1 FAT SAT CORONAL POST CONTRAST SEQUENCE USED IN PITUITARY GLAND IMAGING
T1 FAT SAT AXIAL POST CONTRAST SEQUENCE USED IN NECK IMAGING
T1 FAT SAT SAGITTAL POST CONTRAST SEQUENCE USED IN CERVICAL SPINE IMAGING
T1 FAT SAT SAGITTAL POST CONTRAST SEQUENCE USED IN LUMBAR SPINE IMAGING
T1 FAT SAT AXIAL(UTERUS) POST CONTRAST SEQUENCE USED IN FEMALE PELVIC IMAGING
T1 FAT SAT AXIAL POST CONTRAST SEQUENCE USED IN FEMALE URETHRA IMAGING
T1 FAT SAT CORONAL POST JOINT INJECTION SEQUENCE USED IN HIP ARTHROGRAPHY IMAGING
T1 FAT SAT AXIAL POST JOINT INJECTION SEQUENCE USED IN SHOULDER ARTHROGRAPHY IMAGING
