Deep Learning-Based Magnetic Resonance-Ultrashort Time of Echo Imaging for Analyzing Degeneration of Intervertebral Disc Cartilage Endplate and Rehabilitation Nursing

Table 2

DIDCE Pfirrmann grading.

Characteristics	Grade I	Grade II	Grade III	Grade IV	Grade V
Structure of nucleus pulposus	Even, bright white	Uneven, horizontal band can be observed	Uneven, gray	Uneven, gray to black	Uneven, black
Nucleus pulposus-annulus fibrosus boundary	Clear	Clear	Unclear	Lost	Lost
Nucleus pulposus signal intensity	High (comparable to cerebrospinal fluid)	High (comparable to cerebrospinal fluid)	Medium	Medium to low	Low
Disc height	Normal	Normal	Slightly reduced	Moderately reduced	Severely reduced