We analysed follow-up data from 18,486 primary total hip arthroplasties performed between 1967 and 2001 to assess the validity of clinical procedures in diagnosing loosening of prosthetic components. Sensitivity, specificity and predictive values were estimated with the radiological definition of loose or not loose as the 'gold standard'. The prevalence of acetabular loosening increased from 0....

Downlo kground: Diagnostic irradiation of the mother during pregnancy increases the risk of childhood acute oblastic leukemia (ALL). There is inconsistent evidence on associations between ALL and other parental dhood diagnostic irradiation. The aim of this analysis is to investigate whether diagnostic X-rays of the r before birth, of the father before conception, or of the child increased the r...

A procedure for the calibration of instruments for the detection of 222Rn in air is described. The method is based on the alpha-spectrometric determination of the concentration in air of 218Po in the calibration chamber. The calibration chamber is described, together with the method of maintaining a high aerosol concentration. The 218Po concentration at steady state in the chamber is found to b...

X-ray based radiological procedure statistics and trend in Malaysia for 1990-1994 is reported; this information allows comparisons to be made with the United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) Report. Additionally it is essential information for health care planners and providers. Malaysia is categorised as a health care level II country based on the UNSCE...

gastric varices (gv) are responsible for 10-30% of all variceal  hemorrhage. however, they tend to bleed more severely with higher mortality. around 35-90% rebleed after spontaneous hemostasis. approximately 50% of patients with cirrhosis of liver harbor  gastroesophageal varices. in this review, new treatment modalities in the form of endoscopic treatment options and interventional radiologica...

Advanced and specialized radiological diagnostic procedures are essential in cases of clinically diagnosed injuries to the head, thorax, abdomen or extremities of a child, especially if there is no case history or if the reporting of an inadequate trauma suggests battered child syndrome. In particular, these diagnostic procedures should aim at detecting lesions of the central nervous system (CN...

this paper presents the current activities on radiation protection in iran. according to the atomic energy organization law of iran the radiological safety is ascribed to the atomic energy organization of iran (a e o i) and the radiation protection department (r p d) is the responsible organ within aeoi. r p d since it's establishment in 1975, with the aim to ensure the protection of man and hi...

BACKGROUND Radiological imaging plays an important role in the setting of staging, follow-up, and imaging-guided treatment of colorectal carcinoma (CRC). METHODS This review aims to summarize the current state of the art of the different radiological imaging procedures in CRC including an overview over recently published national and European guidelines and consensus statements concerning the...