During fluoroscopic bladder and bronchial examinations the radiation workers concerned are exposed to 90°-scattered photons. The effective energy expressed in mm Al was measured for these photons exited at tube potentials ...

Two capacitor discharge X-ray units of different make were compared. The same radiological examinations were carried out with both units and the radiation exposure for every examination was measured on a Rando phantom with ...

While high-energy photon radiation in radiotherapy of deeper tissues has a skin-sparing effect, contamination with electron and low-energy photon radiation can diminish and even abolish this effect. Experiments with perspex, ...

A study of the rates of repeat radiography in two hospitals in the Cape Peninsula was undertaken. The relationship between these rates and the type of examination as well as the contributing factors was established. The ...

The relative biological effectiveness (RBE) of 100 kV X-rays compared with cobalt-60-γ-irradiation was determined using a cell colony assay based on the survival of Chinese hamster V-79 lung fibroblasts. The 37% dose (D(o)) ...