Characteristics of Lumbar Bone Density in Middle-Aged and Elderly Subjects: A Correlation Study between T-Scores Determined by the DEXA Scan and Hounsfield Units from CT

Table 4

Regional CT values in different lumbar sequences.

Lumbar sequences	Vertical (HU)			Horizontal (HU)
	Anterior 1/3	Middle 1/3	Posterior 1/3	Left 1/3	Center 1/3	Right 1/3
L1	136.38 ± 4.42	148.25 ± 4.89	147.4 ± 5.22	154.20 ± 5.30	145.19 ± 4.81	132.64 ± 4.27
L2	136.38 ± 4.61	143.21 ± 5.02	139.61 ± 4.98	146.66 ± 5.14	142.09 ± 4.88	130.44 ± 4.48
L3	131.80 ± 4.56	134.66 ± 4.76	134.15 ± 4.99	138.44 ± 4.90	137.56 ± 4.78	124.60 ± 4.54
L4	130.90 ± 4.92	137.28 ± 4.90	139.53 ± 5.10	139.70 ± 5.13	138.30 ± 4.92	129.71 ± 4.85
Average	133.86 ± 2.31	140.85 ± 2.45	140.17 ± 2.54	144.75 ± 2.57	140.79 ± 2.42	129.35 ± 2.27