CT motion artifacts (Motion Blur in X-ray)

Motion blur in x-ray imaging and a description of how the blurring can lead to motion artifacts in CT imaging. We describe the Filtered Backprojection algorithm and how the artifacts can propagate through the images. We also demonstrate how view weighting algorithms can be used to reduce motion artifacts in CT images.
For more information on the physics of x-ray and CT imaging see:
howradiologyworks.com.

[@fatihharman7096]

What is the pitch value of axial scan?

[@HowRadiologyWorks]

Pitch is the table translation divided by detector height, so if the table doesn’t move the pitch is zero

[@fatihharman7096]

If a head scan is reported as body32 in the dose report, the actual DLP is actually double, right? To give an example, a brain scan was done and DLP was given as 250 mgy Body32. Actually, it should be 500 mgy Head16, right?

[@HowRadiologyWorks]

This is approximately right and the vendors have a conversion which may not be exactly 2 but a similar factor

[@nitin5602]

Is there any way that emf of electric heat pad can reach level of ionizing radiation?

[@HowRadiologyWorks]

No a heat pad can not generate ionizing radiation. Please leave a similar question just on one video.

[@nitin5602]

Thanks Sir for clearing my doubt

[@HowRadiologyWorks]

@@nitin5602 no problem

[@ofentsefaithmaphutha5014]

🙌❤️

[@HowRadiologyWorks]

You are welcome Ofentse

[@fatihharman7096]

Is the brain more resistant to radiation than the chest?

[@TheNettforce]

Yes the brain is more resistant to radiation damage than the chest. This is why the brain has a low weighting factor when computing the effective dose