Objective To investigate stroke prevention knowledge among primary hypertension stroke patients.Methods The survey was conducted among 100 primary hypertensive stroke patients older than 35 years old for sociodemographic information,and stroke prevention knowledge.Results The stroke prevention knowledge score of 100 patients was (63.22 ± 20.68) points,diet dimension got the best score,came in first,to master the knowledge of the incidence of stroke signs was the worst,came in last.Blood pressure medication,coronary heart disease were stroke-related knowledge influencing factors.Conclusions The level of stroke prevention knowledge among primary hypertension stroke patients is low.In order to help hypertensive stroke patients improve their stroke prevention knowledge,health education should be promoted.

ObjectiveTo investigate the value of perfusion CT imaging in thyroid nodule. Methods Of the 40 cases of post-surgical thyroid nodule identified by pathology, nodular goiter was verified in 22 cases, thyroid adenoma in 6 cases,and thyroid carcinoma in 12 cases. All cases underwent CT perfusion scan at preoperative. The perfusion parameters including the blood flow ( BF), blood volume ( BV ), mean transit time ( MTT), and permeability of surface (PS) of region of interest (ROI) were calculated. The Mann-whitney test was used to comparing the differences of the different perfusion parameters. The ones with statistical significance would be introduced into the discriminatory analysis to distinguish the benign and malignant thyroid nodule. ResultsThe median MTT in 28 cases with benign thyroid nodule were 4. 33 s (Min 1.42 s,Max 10. 93 s), and that in 12 cases with malignant nodules were 2. 18 s( Min 1. 95 s, Max 2. 87 s). The difference had statistical significance ( P ＝ 0. 00 ) . The median BF in cases with thyroid carcinoma was 560. 23( Min 330. 66, Max 1000.00) ml ·100 g-1 ·min-1, and that in cases with the benign nodular were 374.79(Min 117.47,Max 1000.00) ml · 100 g-1 · min-1. There was a significant statistical difference ( P ＝0. 01 ). Through the discriminatory analysis, the difference of MTT between benign and malignant nodules were statistically significant (P ＝ 0. 00 ).After establing the Bayes discriminatory function, the overall diagnostic accuracy was 87.5％ (35/40).Conclusions MTT and BF are useful parameters in CT perfusion imaging to distinguish the benign and malignant thyroid nodules and the MTT is more accuracy.