OBJECTIVE: To analyze the relationship between the @entity79 ( @entity79 ) and lumbar @entity1797 in @entity2608 by using T1  -MRI. METHODS: Twenty female @entity2608 at the age of 10.9 years on average (rang, 4-20 years) were selected. The lumbar intervertebral discs were classified by Pfirrmann grading system and the T1   relaxation time (T1   value) was examined by using MRI (Philips 1.5 Tesla), and then @entity79 values of the L4,5 vertebrae and femoral ward's triangle were detected by using Osteocore dual energy X-ray absorptiometry. Finally, the relationship of T1   value of the lumbar intervertebral discs and Pfirrmann grading with age, weight, @entity79 of lumbar vertebrae and femoral ward's triangle was analyzed. RESULTS: The @entity79 values of lumbar vertebrae and femoral ward's triangle were (0.64    0.17) g/cm2 and (0.67    0.19) g/cm2 respectively, showing no significant difference (t = 2.893, P = 0.128). According to Pfirrmann grading system, there were 7 cases of grade I, 8 cases of grade II, and 5 cases of grade III at L4,5 intervertebral discs. The T1   value of the lumbar intervertebral disc was (104.08    18.65) ms; the T1   values of grades I, II, and III were (121.31    13.44), (104.73    15.01), and (77.41    11.87) ms, respectively. There was a negative correlation between T1   value and the age and the @entity79 of lumbar vertebrae and femoral ward's triangle. There was a positive correlation between Pfirrmann grading and the variables as listed above. Significant negative linear correlation was also observed between T1   value and Pfirrmann grading. CONCLUSION: The T1   value is a reliable index when quantifying lumbar @entity1797 , and there is a significant positive correlation between @entity79 and lumbar @entity1797 in @entity2608 .

[RELATIONSHIP BETWEEN BONE MINERAL DENSITY AND LUMBAR INTERVERTEBRAL DISC DEGENERATION IN XXXX ].

@entity1797 :: ('MESH:D055959', 'Disease') :: ['intervertebral disc degeneration'] @entity79 :: ('MESH:D001847', 'Disease') :: ['bone mineral density', 'BMD'] @entity2608 :: ('9544', 'Species') :: ['rhesus macaques']
@entity2608 :: (9544,Species) :: ['RHESUS MACAQUES']
