Microbeam radiation therapy uses a lattice of kilo-voltage x-ray âmicro-beamletsâ. The beamlets are 100-300 microns apart (100 microns is roughly the width of a human hair) and each beamlet is 10-50 microns wide.
The National-Security-Law Expert Who Blocked Trump's Travel Ban The former federal prosecutor and deputy counsel to the Department of Homeland Security writes that the prohibition violates the Constitution.
Demonstrators gather near The White House to protest President Trump's travel ban on seven Muslim countries on January 29, 2017 in Washington. President Trump signed the controversial executive order that halted refugees and residents from predominantly Muslim countries from entering the United States.