Magnetic resonance imaging ascertainment of the local stem cell transplantation target by CT-guided puncture before operation. a, Cervical MRI indicating that the patient had a C3-C6 injury; thus, the upper intervertebral space to be punctured was C3-C4, and the lower intervertebral space was C7-T1. The red line indicates the upper intervertebral space (C3-C4) to be punctured and the intended target for cell transplantation. The green line represents the upper intervertebral space (C7-T1) for the intended puncture and the intended cell transplantation site. b, c, d, The spinal cord conditions of the upper and lower targets designated for stem cell transplantation, indicating that the targeted sites in the spinal cord were healthy in appearance, contained no obvious lesions and were close to the injury site.