background and objective: chest x-ray is usually the first radiography performed for a newborn. this test is easily accessible and yet a basic screening method. different results have been reported in various studies regarding the diagnostic value of chest x-ray in cardiovascular disease in children. materials and methods: the study was carried out retrospectively using the medical files of 100...

RESULTS: Microcalcifications were detected radiographically in 146 of 361 (40%) cores. If calcifications were present on specimen radiographs, histologic detection of these calcifications was made in 114 of 146 (78%) specimens, and diagnosis was made in 118 of 146 (81%). If calcifications were not present on specimen radiographs, histologic detection was obtamed in 27 of 215 (13%) specimens and...

An x-ray multilayer mirror, specially designed to produce resonant absorption at a definite angle of incidence, may be used as an angular dispersive element for refractive x-ray radiography. In this method the signal-to-noise ratio can be significantly enhanced due to suppression of the shot noise produced by the direct beam. Refraction contrast of a copper wire 75 μm in diameter and a human ha...