Selection of X-ray Technical Factors

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VIDEO INFO: Selecting for radiographic technique is a complex process. Here is an overview of the most significant variables. Subscribe! Or we'll microwave your dosimeter ;)
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[@RockTheRegistry]

In the discussion of subject density, I mention that an increase in subject could decrease contrast due to Compton scatter and resultant fog, but a case could be made that increasing subject density will increase contrast due to increased subject contrast. Also in the discussion of destructive pathology, if we have pathology increased so much that completely destroyed an entire bone then the contrast will decrease.

[@joemitchell5178]

Can you tell me if these factors drastically changed for the 2017 update or are they similar? I appreciate how you discuss and show the direct and indirect connections. Thank you

[@RockTheRegistry]

@@joemitchell5178 Great question! Nothing much changed with the update on this section.

[@natalielemus9433]

This video is helping me so much. Thank you for posting this.

[@RockTheRegistry]

Thank you! Definitely download your free copy of 53 Patient Care Questions. There’s a link below the video. And let me know if you have any specific questions about radiography.

[@jeremyz8020]

Hello, sir. Why increasing OID doesn’t change IR exposure? If there is more loss of scatter, more IR exposure should be decreased.

[@hunegnawderseh4325]

how to solve errer cod 3

[@muhammadibrahimkhan1955]

Sir is every factor remain same or something changed now till 2023

[@jeremyz8020]

I feel a lot mistakes in the table. If you change the angle, the SID should be increased. So the IR exposure should be decreased. As for the additive condition, why can the contrast be increase since more mucus and blood around this area? If the kvp is constant and is not enough to penetrate this condition, you can not figure out what is what. If the kvp can penetrate the tissue, the exposure latitude will be longer so the contrast is decreased as well. Sir, I really believe the contents need to be verified.

[@chad969]

I'm not sure if I understand what the words "direct" and "indirect" mean in this context. I noticed that every time you marked one of the boxes with a D for direct, you marked the adjacent box with an up arrow to indicate an increase. And every time you marked one of the boxes as indirect, you marked the adjacent box with a down arrow. So one could infer that perhaps the word "direct" just means that as A increases B increases, and "indirect" means that as A increases B decreases. But if that's the case then it would seem that both of the columns which say "increase/decrease" are completely redundant. Take mAs for example. You marked a D in the upper left box, indicating a direct relationship between mAs and receptor exposure. If "direct" means that as mAs increases, receptor exposure increases, then why do we need a box right next to it with an up arrow? Isn't that up arrow just indicating the exact same thing that the letter D is indicating?

[@RockTheRegistry]

Yep.