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Technologists Guide to technical parameters.

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and your first email is a self check study guide.

Important X-ray Gen Concepts

  • X-ray Generation Basics: boil off electrons, speed them up, crash them into heavy metal.
  • Bremsstrahlung: Put on the breaks until you understand this physical interaction as it generates most of the x-rays..
  • Characteristic: Learn the basic reason why there are lines, peaks in the x-ray spectrum
  • X-ray Tube Overview: summary of the components of an x-ray tube: filament (cathode), kVp, mA, rotating anode.
  • X-ray spectrum: Learn how to interpret an x-ray spectrum including Bremsstrahlung, Characteristic and filtering contribution
  • Engagement Questions: Self check questions with answers to ensure you are understanding the concepts.


I absolutely love this website! I am always looking for educational material that will assist educating future Radiologic Technologists. How Radiology Works has become one of my favorite educational resources due to its simple (and sometimes witty) approach to educating students about CT and x-ray.

Rebecca Raether

Rebecca Raether

Technologist, MSRS RT(R) (CT)

Brian’s lessons on How Radiology Works are something else. Awesome illustrations that are simple, rich and renewing. Thanks so much for undertaking such wonderful work. The reason is that most radiographers need a review of what they already should know and for students your methods are quite lovely.

Franklin Chiedozie Omeje

Franklin Chiedozie Omeje


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True Heros

As a Rad Tech you are the true hero, working day in and day out to get the best images for all of your patients.

Our mission here is to equip you with the physics knowledge of how the scanners work so that you aren’t nervous or guessing at the console but instead calmly making informed decisions.

froedtert brett on table sm

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