Performance of a 41 x 41 cm2 amorphous silicon flat panel x-ray detector designed for angiographic and R&F imaging applications.

We measured the physical imaging performance of a 41 x 41 cm2 amorphous silicon flat panel detector designed for angiographic and R&F imaging applications using methods from the emerging IEC standard for the measurement of detective quantum efficiency (DQE) in digital radiographic detectors. Measurements on 12 production detectors demonstrate consistent performance. The mean DQE at the detector center is about 0.

Digital tomosynthesis in breast imaging.

Purpose: To describe and evaluate a method of tomosynthesis breast imaging with a full-field digital mammographic system.

Materials And Methods: In this tomosynthesis method, low-radiation-dose images were acquired as the x-ray source was moved in an arc above the stationary breast and digital detector. A step-and-expose method of imaging was used.

[Prevalence of venous diseases. The San Valentino screening and prevalence study].

The PAP/PEA (Prevalence of Early Atherosclerosis) study aims to define the prevalence of subclinical atherosclerosis in a typical population of central Italy. A concomitant study evaluates the prevalence of venous diseases. The first group of 850 patients evaluated, indicated the prevalence of superficial ve-nous disease, the prevalence of deep venous thrombosis and pulmonary embolism and the prevalence of the most common venous malformations.