title: By the way, doctor.  I read that President Obama had a virtual colonoscopy.  Is this the colon cancer screening test that everybody should be getting instead of a regular colonoscopy?  I thought it was kind of experimental.
authors.forename: Robert J
authors.initials: RJ
authors.lastname: Mayer
mesh_terms: D023881:Colonography, Computed Tomographic / Q000191:economics / Q000706:statistics & numerical data*; D003113:Colonoscopy / Q000706:statistics & numerical data; D015179:Colorectal Neoplasms / Q000175:diagnosis* / Q000517:prevention & control; D003955:Diagnostic Tests, Routine / Q000191:economics; D007722:Health Knowledge, Attitudes, Practice; D006801:Humans