Learning objectives
To detail the existing utility of T1 weighted images in musculoskeletal MR scans.
To learn the additional or unrecognized importance of T1 weighted sequences in the interpretation of Musculoskeletal MR scans.
Background
Fluid sensitive sequences like FSPD (fat saturated Proton Density) and STIR are given more importance by many readers while interpreting musculoskeletal MRI.
T1 weighted sequences are usually ignored as the images are considered as "anatomy weighted".
In this review,
we discuss the importance of T1 weightedsequences in detecting different pathologiesof the musculoskeletal system.
From Known to Unknown- utility of T1 weighted images.
Broad concepts On T1W- What is known :
1. View the "Dark side" with suspicion
If marrow lesions are darker than muscle,
they...
Findings and procedure details
Unknown ( or lesser known) concepts On T1W:
1. View the "Dark side" with suspicion
Dark soft tissue,
not seen on fluid sensitive images,
is likely due to fibrotic lesions.
Examples include De Quervain's tenosynovitis and capsular scarring in the axillary recess.
2.
"Fat is a Friend "
Loss of bright fat signal on T1W sequences around the ligaments is a sign of injury to the ligaments.
Loss of bright fat signal within and aroundnerves implies impingement by lesions like degenerated disc or invasion by...
Conclusion
This review summarises the importance of T1 Weighted sequences in the interpretation of musculoskeletal pathologies.
The well-known concepts are first reviewedfollowed by lesser-knownconcepts about T1 weighted sequences.
In general,
apart of excellent anatomic detail on T1 Weighted sequences,
there is a wealth of information to diagnose many pathologies.
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