Objective:to do clinical study on effect of sleep-related behavior modification and relaxation training on insomnia.Method:44 outclinic patients with insomnia received sleep-related behavior modification and relaxation training for 8 weeks. Using self-designed inventory to assess the outcome.Result:the time of sleep increased since the third week, and increased continuously. After the intervention, the rate of satisfaction about sleep increased from 23% at the baseline to 86.1%. 36 of the 44 patients completed the 8-week clinical study. Conclusion:sleep-related behavior modification and relaxation training can improve sleep of patients with insomnia.

Objective To analyze the characteristics and to evaluate the application of quantitative CT spectral parameters in patients with suspected lung cancer.Methods One hundred and thirty two patients with occupying lesions of the lung underwent chest plain and two-phase contrast enhanced CT scan with gemstone spectral imaging (GSI) mode.The CT images of patients with confirmed lung cancer by pathological evidence were analyzed with GSI viewer.Optimal energy value supplying optimal contrast-tonoise ratio (CNR) was recorded.The CT values of lesions at 40 keV,70 keY and optimal energy level were measured.Spectral curve slope at different intervals of 40-70 keV,40-100 keV and 40-140 keV was computed.Effective atomic number (Zeff),iodine concentration (IC) and water concentration (WC) were measured and analyzed by statistical methods.Results Sixty six patients with confirmed lung cancer were included in the analysis.The optimal energy values for optimal CNR on plain scan,arterial phase and venous phase were (63.09±5.33) keV,(52.65±6.44) keV and (54.06±5.53) keV,respectively.The difference of CT values at different energy levels on each scan phase was statistically significant (F=4.561,P=0.025).The spectral curve slope values among three different energy intervals were significantly different (F=2.137,P＜0.001).The differences of the slope between arterial phase and venous phase at same energy interval were not significant (40-70 keY:t=1.165,P=0.248;40-100 keV:t=1.102,P=0.274;40-140 keV:t=1.118,P=0.268).Zeff on plain scan,arterial phase and venous phase was 7.73±0.14,8.35±0.37 and 8.39±0.30,respectively.There was positive correlation between IC and Zeff on enhanced phase (arterial phase:r=0.998,P＜0.001;venous phase:r=0.998,P＜0.001).Conclusion CT spectral imaging can supply the optimal energy value for optimal CNR.CT value at optimal energy level and spectral curve slope at 40-140 keV are suitable for analysis.IC and Zeff can be used jointly in evaluation of patients with suspected lung cancer.