螺旋CT双期增强薄层扫描对小胰腺癌诊断的研究

为了研究螺旋CT胰腺期、肝脏期双期增强薄层扫描在小胰腺癌早期诊断中的作用,对25例小胰腺癌患者行螺旋CT双期增强扫描,结果显示,两组观察结果经统计学处理有显著性差异,螺旋CT动态增强薄层2mm扫描比5mm扫描可明显提高小胰腺癌和微胰腺癌的检出率,对小胰腺癌的早期诊断有重要的临床价值.肝脏期扫描为临床确定肿瘤是否能够手术切除提供科学依据.     

儿童慢性乙型肝炎的抗病毒治疗

儿童慢性乙型肝炎的治疗比较复杂,应正确选择抗病毒治疗的时机,合理应用有限的治疗药物。处于免疫耐受期的患儿不应治疗,处于免疫清除期或肝脏组织学提示有明显炎症的应进行治疗。干扰素是治疗的一线药物,核苷（酸）类似物是二线用药。     

FURTHER STUDIES OF SITUATIONAL TESTS

In the present paper, results are reported for two different situational judgment tests (SJT) used in validation studies with almost 4,000 employees in 7 different organizations. Across the 2 studies, it was shown that situational test scores were significantly related to performance (weighted average r = .19), cognitive ability (weighted average r = .45), and experience (weighted average r = .20). In one study, there was a slight tendency for experience and cognitive ability to interact in the prediction of situational judgment, such that cognitive ability became less predictive as experience increased. Situational judgment fully mediated the effects of cognitive ability in one study, but not in the other. Finally, SJT race effect sizes were consistent with past research and, while not trivial, smaller than those typically observed for cognitive ability tests. The studies yielded very similar results despite the use of different keying methods (empirical vs. subject matter expert opinion). The preponderance of the evidence indicates that situational judgment measures mediate avariety of job relevant skills. Limitations to these studies and directions for future research are reviewed.