DWI对99Tcm-MDP骨显像不能定性脊柱病灶的临床应用价值

目的 探讨DWI在⁹⁹Tc^m-MDP骨显像中不能明确良恶性的脊柱病灶中的诊断价值。方法 2016年1月-2017年6月之间常规行⁹⁹Tc^m-MDP全身骨显像发现脊柱病灶（≤ 2）,但性质不能明确的30例肿瘤患者（男12例,女18例,中位年龄57岁）,1周内再行常规MRI及DWI检查。以2种以上影像检查（CT或MRI）和/或随访（≥ 6个月）明确脊柱病灶的良恶性诊断,分析DWI对脊柱病灶的诊断效能。测量、分析良恶性组病灶间ADC值差异,采用接受者操作特征曲线判定良恶性病变鉴别诊断阈值,并计算ADC值对病变潜在恶性评估的敏感度、特异度及准确度。数据分析均使用SPSS22.0统计软件完成,组间比较采用独立样本t检验。结果 共39个骨病灶,其中恶性27个,均为骨转移灶;良性12个：终板炎6个、感染性4个、退变2个;39个病灶中：良性病变组病灶平均ADC值为（1.402±0.441）×10^-3mm²/s,恶性病变组病灶平均ADC值为（0.929±0.221）×10^-3mm²/s,两组间有统计学差异（t=4.494,P<0.05）。以1.163×10^-3mm²/s为阈值,曲线下面积为0.843,ADC值评估骨疾病变潜在恶性的敏感度92.6%,特异度75.0%,准确度94.9%,阳性预测值100.0%,阴性预测值85.7%。结论 DWI对⁹⁹Tc^m-MDP骨显像不能定性的骨病灶具有较高的良恶性诊断效能;ADC值作为量化指标对脊柱良恶性病变的鉴别诊断有一定的价值。     

灰毡毛忍冬花蕾挥发油成分研究

金银花为我国常用中药 ,具有清热解毒、凉散风热的功能 ,常用于外感风热、流行感冒、疖疮痛肿、乳腺炎、痢疾诸病。金银花在我国分布广泛 ,植物来源复杂。据报道 [1,2 ]全国有 2 0余种植物的花蕾在不同地区当金银花入药 ,均为忍冬科 Caprifoliaceae忍冬属 Lonicera植物。其中 ,灰毡毛忍冬 L. macrathoides Hands.-Mazz.在西南地区大量栽培使用 ,为西南地区金银花主流商品之一。挥发油是金银花的活性成分 ,山东产忍冬 L.japonica Thunb.及其变种花蕾的挥发油成分研究已有文献报道 [3～ 5] ,但灰毡毛忍冬干燥花蕾的挥发油成分尚未见报道。…     

馕加碘防治碘缺乏病的初步实验研究

目的 用新疆市场上销售的碘盐和当地产的土盐烤制馕,探索馕作为补碘载体的可行性.方法 采用新疆当地馕坑和打馕的传统方法,取30 g碘盐和30 g土盐,分别加水后各与2 kg面粉混合,烤制两种馕即碘盐馕和土盐馕各10个.分别取两种馕的上皮部,炉壁部、混合部(上下及中间),采用食品中碘的碱灰化-砷铈催化分光光度测定法,测定两种馕及其不同部位的含碘量,并与成人及儿童每天摄碘推荐量进行比较.结果 碘盐馕含碘量为(0.654±0.076)mg/kg,远远高于土盐馕的含碘量[(0.075 ±0.022)mg/kg],二者比较差异有统计学意义(t=13.520,P<0.01).碘盐馕和土盐馕的上皮部、炉壁部、混合部含碘量分别为(0.700±0.100)、(0.064 ±0.029)mg/kg,(0.647 ±0.076)、(0.070 ±0.019)mg/kg,(0.659 ±0.073)、(0.073 ±0.030)mg/kg,两种馕相同部位比较,差异有统计学意义(t值分别为3.826、4.201、4.103,P均<0.01),同种馕不同部位比较,差异无统计学意义(F值分别为0.220、0.190,P均>0.05).结论 采用碘盐烤制的馕含碘量高于当地产的土盐烤制的馕,同种馕的不同部位含碘量没有明显的不同,鉴于馕作为主食,在当地具有普遍性,采用碘盐烤制的馕可作为有效补碘载体.     

新疆阿克苏地区重点人群碘营养和智力水平调查

Objective To investigate the iodine nutritional status of school children, lactating women and infants in iodine deficient areas of Baicheng and Wushi Counties in Xinjiang Autonomous Region. Methods According to the geographic location of east, south, west and north of county, 10 primary schools of 8 townships were selected. In each school, 10 children among each gender and age group from 8 to 10 years old were selected. A total of 300 school children were chosen. One hundred and four infants aged 0-2 years old and their mother were selected in 8 townships. Iodine content in edible salt at household level, the urinary iodine in school children and lactating women, total goiter rate(TGR) and the status of the intelligence quotient (1Q) of school children, the status of psychological development of infants were observed. Direct titration assay for testing the salt iodine, colorimetric ceric-arsenic assay and vitriolic ammonium assimilation were used for testing urinary iodine. The size of thyroid gland was measured by palpation. The Combined Raven Test for Chinese Rural was used to test the IQ. The psychological development of infants was tested by Danver Development Screening Test (DDST). Results The coverage rate of iodized salt at household level was 73.1% (123/182), however, the proportion of households using adequately iodized salt was 64.1% (118/182). The medium of urinary iodine in school children was 103.7 μ/L, with 47.8%(75/157) less than 100 μg/L and 28.0% (44/157) less than 50 μg/L; it was 123.0 μg/L in Baieheng County, with 44.4%(28/63) less than 100 μg/L and 33.3%(21/63) less than 50 μg/L; it was 100.3 μg/L in Wushi County, 50.0%(47/94) less than 100 μg/L and 24.5%(23/94) less than 50 μg/L. The medium of urinary iodine in locating women was 143.3 μg/L, it was 119.7 μg/L and 184.6 μg/L in Baicheng and Wushi Counties, respectively. The total rate of goiter in school children was 14.3%(43/300), it was 10.8%(13/120) and 16.6%(30/180) in Baicheng and Wushi Counties, respectively. The average IQ in school children was 80.6±11.6, it was 83.0±11.6 and 79.0±11.7 in Baicheng and Wushi Counties, respectively. The proportion of mental retardation in school children (IQ≤69) was 13.0% (39/300), it was 6.7% (8/120) and 17.2%(31/180) in Baicheng and Wushi Counties, respectively. In addition, the proportion of psychological development in infants being normal, suspicious and abnormal was 78.8%(82/104), 12.5% (13/104) and 8.7%(9/104), respectively. Conclusion This study confirms the fact that there is also existence of mental retardation in children and infants, caused by iodine deficiency.