<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_en">radiology</topic></authority><related type="other"><topic>radiologists</topic></related><related type="other"><topic>radiography</topic></related><related type="broader"><topic>medicine</topic></related><related type="broader"><topic>physics</topic></related><variant type="other"><topic>radiological</topic></variant> <note xml:lang="en"><![CDATA[ The science concerned with the use of radiation, such as X-rays and radioactive materials in the diagnosis and treatment of disease. For the application of techniques producing radiographic images, use "radiography." ]]></note></mads>