Lingual thyroid gland: sonographic appearance

Thyroid dysgenesis is often manifested by a lingual or sublingual location of the thyroid gland. If radionuclide studies are not readily available or are contraindicated, ultrasound (US) may be used to locate the gland. The US appearance of a lingual thyroid gland and the role of US in the evaluation of suspected thyroid dysgenesis are described.     

HPLC测定益肤霜中红霉素和地塞米松的含量

采用ＨＰＬＣ测定益肤霜中红霉素和地塞米松的含量，控制制剂的质量。色谱条件：固定相为Ｋｒｏｍａｓｉｌ Ｃ１８柱；流动相为乙腈－０．２ｍｏｌ／Ｌ醋酸铵－水，流速０．８ｍｌ／ｍｉｎ；检测波长２１５ｎｍ。以ｃ对峰面积Ａ作直线回归，红霉素在１．５－２４ｇ／Ｌ地塞米松在２０－３００ｍｇ／Ｌ的范围内，其浓度与峰面积呈直线关系。红霉素回收率为９９．６９％；地塞米松的回收率为１００．２８％。本法操作简便，结果准确，     

Quality assessment and assurance in diagnostic imaging. Theoretical and practical considerations and a quality audit of the excretory urogram

Concepts necessary to an understanding of the basics of quality assurance audits are presented. Included are specific examples that bridged theory and practice by applying the protocol to a real-life diagnostic imaging situation. This method meets the present requirements of the Joint Commission of the Accrediation of Hospitals.     

The occurrence and significance to animal health of Leptospira, Mycobacterium, Escherichia coli, Brucella abortus and Bacillus anthracis in sewage and sewage sludges.

Samples of sewage, sewage sludge and sewage effluent from one or more of four sewage treatment plants were examined for the presence of Leptospira, Mycobacterium, Escherichia coli, Brucella abortus and Bacillus anthracis. Brucella abortus and Bacillus anthracis were not isolated. Eleven strains of E. coli potentially enteropathogenic for calves or piglets, eight pathogenic strains of Mycobacterium and one patho;genic Leptospira strain were isolated from 101, 189 and 189 samples respectively. Sewage sludge is no;t considered to play a major part in the epidemiology of disease caused by these organisms.     

Prekallikrein-Kallikrein conversion rate as a predictor of contrast material catastrophies

An in vitro is described that attempts to detect patients with a potential for adverse systemic reactions to contrast material. This test involves measuring the rate of conversion of prekallikrein to kallikrein under certain standard conditions. In a preliminary retrospective study, the test could be used to identify such patients with a sensitivity of 88%, a specificity of 82%, and a predictive value of 79%.