Read more nuclear medicine stories on Newserhttp://www.newser.com/taggrid/43119/nuclear-medicine.htmlhttp://img1-cdn.newser.com/images/newser-black250x40.gifhttp://www.newser.com/2012 - Newseren-usNewser Feed GeneratorSat, 26 May 2012 06:22:06 CDThttp://www.newser.com/story/66838/radioactive-isotope-shortage-stalls-medical-tests.htmlHarry Kimball<img src='http://img2-cdn.newser.com/getimage.aspx?mediaid=233719&width=45&height=45&crop=Y&updateddate=20110331215713' border='0' />Trouble at nuclear reactors that produce two-thirds of the world’s medical isotopes have created massive testing delays in the US, the Philadelphia Inquirer reports. The isotopes, created in Canada and the Netherlands, are used for presurgery stress tests and to locate some cancers; doctors are limping along with older, less...A nuclear medicine technologist talks to a patient before a positron emission tomography cat scan, or PET-CT.http://www.newser.com/story/66838/radioactive-isotope-shortage-stalls-medical-tests.htmlThu, 13 Aug 2009 15:44:02 CDT