Anti-scatter grids | X-ray Physics | Radiology Physics Course #39

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One mechanism used to reduce scatter is to place an anti-scatter grid between the patient and the detector. This grid attenuates photons that are not parallel to the primary beam (ie scattered photons). The removal of scatter comes at a cost. The intensity of the primary beam needs to increase in order to get the same exposure at the detector. This is known as the Bucky factor. Here we will also discuss grid types and grid cut-off.

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Not sure if the question banks are for you?
If you're here, you're likely studying for a radiology physics exam. I've spent the last few months collating past papers from multiple different countries selecting the most commonly asked questions. You'll be surprised how often questions repeat themselves!

The types of questions asked in FRCR, RANZCR AIT, ARRT, FC Rad Diag (SA), ABR qualifying Core Physics and MICR part 1 are surprisingly similar and the key concepts remain the same throughout. I've taken the most high-yield questions and answered them in video format so that I can take you through why certain answers are correct and others are not.

Happy studying,
Michael

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