📌 How to Avoid the Trap: Pars Defect That Looks Like a Facet Joint on Axial MRI Shape, Level, and Position — The Three Keys to Correct Identification On axial lumbar MRI, a pars defect can mimic the appearance of a facet joint, especially when there is an irregular gap that resembles a joint space. To distinguish them correctly, three criteria must be checked: 1. Level A true facet joint appears only at the level where the superior and inferior articular processes meet. If the slice is above or
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📌 How to Avoid the Trap: Pars Defect That Looks Like a Facet Joint on Axial MRI Shape, Level, and Position — The Three Keys to Correct Identification On axial lumbar MRI, a pars defect can mimic the appearance of a facet joint, especially when there is an irregular gap that resembles a joint space. To distinguish them correctly, three criteria must be checked: 1. Level A true facet joint appears only at the level where the superior and inferior articular processes meet. If the slice is above or
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