Application of molybdenum target X-ray photography in imaging analysis of caudal intervertebral disc degeneration in rats

Table 1 McNemar's test results of degeneration visualized using molybdenum target X-ray photography and conventional X-ray examination (n = 19)

		Molybdenum target inspection (No.)
		Obvious	Unobvious	aP
Plain X-ray (No.)	Obvious	12	0	0.031
	Unobvious	6	1

^aP: McNemar's test, P < 0.05

Table 2 Measured height of space between degenerative vertebral segments in different plain X-ray images

	mean ± SD1 (mm)	Observer 1	Observer 2	Observer 3	Observer 4	ICC
Needle puncture model (n = 9)	X-ray	2.0 ± 0.7	1.8 ± 0.5	2.3 ± 0.2	1.6 ± 0.4	0.41
	Molybdenum	1.7 ± 0.2	1.9 ± 0.2	1.9 ± 0.3	1.8 ± 0.1	0.81
Endplate-injured model (n = 10)	X-ray	1.7 ± 0.3	2.2 ± 0.5	2.6 ± 0.3	1.8 ± 0.1	0.35
	Molybdenum	2.1 ± 0.1	1.9 ± 0.3	2.1 ± 0.1	2.0 ± 0.2	0.92

¹mean ± SD: Mean height (Figure 2) ± standard deviation. ICC: Intraclass correlation coefficient.