There's a good reason why composers of operas and musicals have traditionally included an overture intended to precede staged shows--and that reason is now supported by science. The overture and entr-acte, respectively the musical overviews of the first and second halves of a performance, are designed to familiarize the audience with the hooks and choruses [...]
New research has shown that childhood exposure to CT scans is linked to an increased cancer risk. And a study published last year linked brain tumours to frequent dental X-Rays. Still, the Canadian Dental Association maintains that X-Rays are an integral component of best dental practices, provided they are used sparingly and only in appropriate [...]
There are many reasons to love MRI; not least among them is the fact that this versatile imaging test won't expose the body to ionizing radiation. In a world increasingly taxed with toxins and free radicals, MRI reassures patients that, should they require medical imaging to address a current health issue, the scan won't impact [...]