Fig. 6From: SPECT/CT bone scintigraphy to evaluate low back pain in young athletes: common and uncommon etiologiesOsteoid osteoma lesion at L1 pedicle with “double intensity sign” on bone scan. a Axial SPECT image show focal increased uptake in the left pedicle with a surrounding area of less intense uptake (“double intensity sign“). b Axial CT image of L1 vertebra and c sagittal image of the spine (between T12 and L3 levels) show a sclerotic lesion at L1 left pedicle with a central lucency which is almost completely calcifiedBack to article page