The double line sign is an MRI finding seen at the periphery of a region of osteonecrosis (avascular necrosis, bone infarct). It is best seen on T2 weighted sequences and consists of an inner bright T2 line representing granulation tissue and an outer dark line representing sclerotic bone. This sign is reported in up to 80% of cases 3.
- 1. Resnick D, Kransdorf MJ. Bone and joint imaging. W B Saunders Co. (2005) ISBN:0721602703. Read it at Google Books - Find it at Amazon
- 2. Kaplan P. Musculoskeletal MRI. W B Saunders Co. (2001) ISBN:0721690270. Read it at Google Books - Find it at Amazon
- 3. Glickstein MF, Burk DL, Schiebler ML et-al. Avascular necrosis versus other diseases of the hip: sensitivity of MR imaging. Radiology. 1988;169 (1): 213-5. Radiology (abstract) - Pubmed citation
Synonyms & Alternative Spellings
|Synonyms or Alternative Spelling||Include in Listings?|
|Double line sign of AVN||✗|
|Double line sign of avascular necrosis||✗|