Radiological Imaging and TestsClick on a link below to learn more about the condition or treatment. Bone Scan CT Scan Discogram EMG Facet Joint Block Lab Tests MRI Scan Myelogram Somatosensory Evoked Potential Spinal Tap X-ray Discography Electrodiagnostic Testing Magnetic Resonance Imaging (MRI Radiographic Assessment for Back Pain Specialized Nerve Tests: NCV and SSEP