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| 1972 || || English engineer {{w|Godfrey Hounsfield}} and South African physicist {{w|Allan Cormack}} develop the [[w:CT scan|computerized axial tomography]] (CAT) scanner (later known as {{w|CT scan}}). With the help of a computer, the device combines many {{w|X-ray}} images to generate cross-sectional views as well as three-dimensional images of internal organs and structures.<ref name="History of Microscopes"/><ref>{{cite web |title=Godfrey Hounsfield |url=https://radiopaedia.org/articles/godfrey-hounsfield |website=radiopaedia.org |accessdate=30 January 2019}}</ref><ref>{{cite book |title=An Introduction to Medical Physics |edition=Muhammad Maqbool |url=https://books.google.com.ar/books?id=5yc-DwAAQBAJ&pg=PA224&dq=1972+%7C%7C+%7C%7C+English+engineer+%7B%7Bw%7CGodfrey+Hounsfield%7D%7D+and+South+African+physicist+%7B%7Bw%7CAllan+Cormack%7D%7D&hl=en&sa=X&ved=0ahUKEwjdkuaE-pXgAhVO1VkKHVXjAZsQ6AEIKTAA#v=onepage&q=1972%20%7C%7C%20%7C%7C%20English%20engineer%20%7B%7Bw%7CGodfrey%20Hounsfield%7D%7D%20and%20South%20African%20physicist%20%7B%7Bw%7CAllan%20Cormack%7D%7D&f=false}}</ref><ref>{{cite book |title=Research Developments in Computer Vision and Image Processing: Methodologies and Applications: Methodologies and Applications |edition=Srivastava, Rajeev |url=https://books.google.com.ar/books?id=YOOWBQAAQBAJ&pg=PA240&dq=1972+%7C%7C+%7C%7C+English+engineer+%7B%7Bw%7CGodfrey+Hounsfield%7D%7D+and+South+African+physicist+%7B%7Bw%7CAllan+Cormack%7D%7D&hl=en&sa=X&ved=0ahUKEwjdkuaE-pXgAhVO1VkKHVXjAZsQ6AEILjAB#v=onepage&q=1972%20%7C%7C%20%7C%7C%20English%20engineer%20%7B%7Bw%7CGodfrey%20Hounsfield%7D%7D%20and%20South%20African%20physicist%20%7B%7Bw%7CAllan%20Cormack%7D%7D&f=false}}</ref> ||

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| 1975 || || The {{w|Microscopical Society of Ireland}} is established.<ref>{{cite web |title=History |url=https://microscopy.ie/history.php |website=microscopy.ie |accessdate=30 January 2019}}</ref> || {{w|Ireland}}