ABSTRACT
Objective To investigate the correlation between the changes of fat and microcirculation in vertebral marrow and the intervertebral disc degeneration. Methods This was a cross-sectional cohort study. Based on the inclusion and exclusion criteria, all 82 patients were recruited, while 246 lumbar intervertebral disc (L2/3-L4/5) were studied. Each disc was assessed by using Pfirrmann grades. The chemical shift imaging (CSI) was performed to calculate the signal intensity ratio (SIR) of the corresponding upper and under vertebral marrow. And intravoxel incoherent motion (IVIM) imaging was performed to obtain the IVIM parameters of slow apparent diffusion coefficient (Dslow), fast apparent diffusion coefficient (Dfast) and perfusion fraction (f). At the same time, b values of 0, 600 s/mm2 were used to obtain the ADC value of each disc. The ADC values of disc, the SIR values and IVIM parameters of the upper and under vertebral marrow between the different segments and different Pfirrmann grading groups were compared using one-way ANOVA or non-parametric test. The correlation of the Pfirrmann grading and ADC value of disc with the parameters of the vertebral marrow were analyzed, respectively. Results Only the f value of the upper and under vertebral marrow showed significant difference between the different segments groups of L2/3 to L4/5 discs (F=5.351 and 8.482, both P<0.05). The ADC values of discs, the SIR value of the upper vertebral marrow and the Dslow value of the under vertebral marrow had significant difference between the different Pfirrmann grading groups (all P<0.05). The Pfirrmann grading was negatively correlated with the disc ADC values (r=-0.651, P<0.01), and was mildly and positively correlated with the SIR values of the upper and under vertebral marrow (r=0.238 and 0.266, both P<0.01). The disc ADC values had a slightly negative correlation with the SIR value of the upper and under vertebral marrow(r=-0.230 and-0.247, both P<0.01). Conclusions The changes of the SIR value and all IVIM parameters of the vertebral bone marrow were not very obvious with the increasing of the grading of the intervertebral disc degeneration, which may be not an effective supplement for the grading of intervertebral disc degeneration.
ABSTRACT
Objective To investigate the correlation between the changes of fat and microcirculation in vertebral marrow and the intervertebral disc degeneration. Methods This was a cross-sectional cohort study. Based on the inclusion and exclusion criteria, all 82 patients were recruited, while 246 lumbar intervertebral disc (L2/3-L4/5) were studied. Each disc was assessed by using Pfirrmann grades. The chemical shift imaging (CSI) was performed to calculate the signal intensity ratio (SIR) of the corresponding upper and under vertebral marrow. And intravoxel incoherent motion (IVIM) imaging was performed to obtain the IVIM parameters of slow apparent diffusion coefficient (Dslow), fast apparent diffusion coefficient (Dfast) and perfusion fraction (f). At the same time, b values of 0, 600 s/mm2 were used to obtain the ADC value of each disc. The ADC values of disc, the SIR values and IVIM parameters of the upper and under vertebral marrow between the different segments and different Pfirrmann grading groups were compared using one-way ANOVA or non-parametric test. The correlation of the Pfirrmann grading and ADC value of disc with the parameters of the vertebral marrow were analyzed, respectively. Results Only the f value of the upper and under vertebral marrow showed significant difference between the different segments groups of L2/3 to L4/5 discs (F=5.351 and 8.482, both P<0.05). The ADC values of discs, the SIR value of the upper vertebral marrow and the Dslow value of the under vertebral marrow had significant difference between the different Pfirrmann grading groups (all P<0.05). The Pfirrmann grading was negatively correlated with the disc ADC values (r=-0.651, P<0.01), and was mildly and positively correlated with the SIR values of the upper and under vertebral marrow (r=0.238 and 0.266, both P<0.01). The disc ADC values had a slightly negative correlation with the SIR value of the upper and under vertebral marrow(r=-0.230 and-0.247, both P<0.01). Conclusions The changes of the SIR value and all IVIM parameters of the vertebral bone marrow were not very obvious with the increasing of the grading of the intervertebral disc degeneration, which may be not an effective supplement for the grading of intervertebral disc degeneration.
ABSTRACT
Objective To investigate the association of cholecystectomy with non-alcoholic fatty liver.Methods The 1 10 adults treated by cholecystectomy,who underwent physical examination in the Third Affiliated Hospital of Southern Medical University from January 201 1 to December 2013,were included in the study.None of the subjects had a history of viral hepatitis and alcohol abuse.All subjects under-went CT scanning and measurement of serum triglyceride and cholesterol levels to confirm the diagnosis of non-alcoholic fatty liver.Results Among the 110 subjects,42 (38.18%)had non-alcoholic fatty liver,including 28 males (45.90%)and 14 females (28.59%);78 (70.91%)had increased blood lipids,and 32 (29.09%)had normal blood lipids.Conclusion Cholecystectomy may be a risk factor for NAFLD.
ABSTRACT
<p><b>OBJECTIVE</b>To improve the results of the soft tissue expansion technique.</p><p><b>METHODS</b>Two expanders were buried in the same soft tissue pocket in an overlapping pattern. The inflation process was carried out routinely.</p><p><b>RESULTS</b>19 cases of various tissue defects were treated with the overlapping tissue expansion technique since March 1999. Good results have been achieved.</p><p><b>CONCLUSION</b>The overlapping tissue expansion technique can provide much more expanded tissue and reduce complications compared with the traditional expansion technique. It is especially suitable for repair of the defects at the facial and cervical region.</p>