MRI Knee - Sagittal T1 - Normal ACL
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MRI Knee - Sagittal T1 - Normal ACL
- The normal anterior cruciate ligament (ACL) is slightly obliquely orientated (superolateral to inferomedial)
- Sagittal plane MRIs of the knee are angled to optimise views of the ACL
- On a T1 sagittal image the ACL should appear well-defined and black, as in this image
- The posterior cruciate ligament (PCL) is only partly visible as it is out of plane with the ACL
MRI Knee - Sagittal T1 - ACL complete tear
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MRI Knee - Sagittal T1 - ACL complete tear
- The ACL is not visible
- Its fibres – normally black – are replaced by strands of high signal representing oedema within the torn ligament