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AJNR - American Journal of Neuroradiology

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Percutaneous Biopsy of the Thoracic and Lumbar Spine: Transpedicular Approach under Fluoroscopic Guidance

Laurent Pierot^,a and Anne Boulin^a

^a From the Department of Diagnostic and Therapeutic Neuroradiology, Foch Hospital, 40, rue Worth, 92151 Suresnes Cedex, France.

View larger version (113K): [in a new window]   FIG 1. Trephine set for biopsy of the thoracic spine. 1 = fine needle (external diameter, 1.5 mm); 2 = rigid guidewire (length, 32 cm); 3 = graduated external sheath (external diameter, 2.8 mm); 4 = hollow intermediate piece with handle; 5 = serrated cannula (internal diameter, 1.6 mm; external diameter, 2.2 mm); 6 = obturator. In the set for biopsy of the lumbar spine, the rigid guidewire is 40 cm long. The graduated external sheath has an external diameter of 4 mm, and the serrated cannula, an internal diameter of 2.2 mm

View larger version (90K): [in a new window]   FIG 2. Percutaneous transpedicular biopsy at the thoracic (T11) level. A, CT scan shows a heterogeneous sclerotic and lytic lesion at T11. B and C, Posteroanterior (B) and lateral (C) views show the transpedicular pathway of the trephine needle.