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 Indian J Med Microbiol  
 

Figure 7 (A, B): Follow-up MRI after RFA of a subphyseal femoral osteoid osteoma of the femur. A sagittal T1W MRI (A) shows an area of coagulation necrosis (arrow) surrounding the nidus (arrowhead). A coronal contrast-enhanced T1W MRI with fat suppression (B) shows a hypointense perfusion defect (arrow) surrounded by a thin enhancing rim (arrowhead)

Figure 7 (A, B): Follow-up MRI after RFA of a subphyseal femoral osteoid osteoma of the femur. A sagittal T1W MRI (A) shows an area of coagulation necrosis (arrow) surrounding the nidus (arrowhead). A coronal contrast-enhanced T1W MRI with fat suppression (B) shows a hypointense perfusion defect (arrow) surrounded by a thin enhancing rim (arrowhead)