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. 2015 Jul 1;16(4):881–888. doi: 10.3348/kjr.2015.16.4.881

Fig. 3. Epicenter and number of involved segments (NIS) of herniated disc on MRI.

Fig. 3

45-year-old female with left upper extremity tingling sensation. A. T2-weighted axial imaging shows disc protrusion at C5-6 level. B. Eight virtual lines delimit seven segments, and epicenter (6) and NIS (5, 6, and 7; i.e., three segments) of herniated disc material are determined.