Single-photon emission computed tomography is a nuclear medicine tomographic imaging technique using gamma rays. It is very similar to conventional nuclear medicine planar imaging using a gamma camera. However, it is able to provide true 3D information. This information is typically presented as cross-sectional slices through the patient, but can be freely reformatted or manipulated as required. The technique requires delivery of a gamma-emitting radioisotope into the patient, normally through i
Basic U.S. dietary guidelines suggest that adults get less than 2,300 milligrams of sodium each day, but the basic guidelines apply to fewer than a third of Americans. The rest -- 70% of the population -- are middle aged, elderly, or African-American. This huge majority should get less than 1,500 milligrams of sodium per day. But the average American gets more than twice the recommended daily dose of sodium: 3,466 milligrams of sodium per day. This means we're at risk of da ngerously raising our blood pressure. That high blood pressure increases our risk of heart disease, stroke, and kidney disease.
One teaspoon of salt contains approximately 2300 milligrams (mg) of sodium. How much sodium do I need? Most Canadians consume far more sodium than is needed. The recommended amount per day is between 1500 mg (considered adequate intake) and 2300 mg (upper amount) for people 9 -50 years of age. For people over 50 years of age, an adequate intake drops to 1300 mg per day until 70 and then 1200 mg over 70 years of age. However, the average daily intake in the Canadian diet is about 3500 mg of sodium, although many Canadians eat well in excess of 5000 mg per day.