Schedule of Prenatal Care. Specific schedules of prenatal care vary from provider to provider, but a general schedule follows below, as well as some of the screening tests or activities you might expect at various visits.
radioisotope. a radioactive form of an element, consisting of atoms with unstable nuclei, which undergo radioactive decay to stable forms, emitting characteristic alpha, beta, or gamma radiation. These may occur naturally, as in the cases of radium and uranium, or may be created artificially.
The reading on the detector increases when above a leak as the radiation can escape through the hole in the pipe more easily and also there will be an accumulation of the radioactive fluid in the ground around the leak. Radioisotopes used to find leaks are ones that emit gamma radiation with a short half-life.Gamma rays can easily penetrate pipes (even if they are underground) and reach the detector. Both alpha and beta particles would not pass through pipes, so could not be used.lthough ionising radiation can cause cancer, high doses of gamma (or X-ray) radiation can target and kill cancerous cells. This is called radiotherapy. About 40% of people with cancer undergo radiotherapy as part of their treatment.