Sources blamed her death on the border scanning machine, described as a "U.S.-made advanced portal using millimeter wave holographic technology to screen passengers for weapons and explosives."
http://www.haaretz.com/print-edition/news/security-scanner-blamed-for-woman-s-death-1.157432
Maybe it was a rare occurrence, but that is precisely the point of the public health experts who point out that using the scanners as primary screening means that very rare incidences will occur because of the large volume of people screened.
http://stoptsascanners.blogspot.com/2011/02/dangers-of-millimeter-wave-scanners.html