Fig. 1
From: The role of intraoperative ultrasound in management of spinal intradural mass lesions and outcome
Intraoperative ultrasounds. Features of the spinal canal (a, b, c, d); a and c; sagittal cuts while b and d; axial cuts. Arrow 1; dura, 2; spinal cord, 3; cerebrospinal fluids, 4; nerve roots (cauda equina), 5; vertebral body, 6; posterior bony element and 7; nerve root exiting from the spinal cord inside the dura. Ultrasound machines (e, f); e, Hitachi Aloka with three probes; 1 Burr-Hole probe, 2 Hockey stick probe, 3; microconvex probe, f; IBE 2500D with one probe, 4; endocavitary probe