Oral Radiology | X-Ray Settings | INBDE, ADAT

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In this video, we discuss the many factors that can be modified like exposure time and peak kilovoltage to change the radiographic image quality and radiation dose. Thanks for watching!

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Quick correction! I would like to clarify the table at the end of the video at 22:00. Increasing kVp increases the relative number of photons (quantity) and therefore increases the intensity of the x-ray beam... therefore, the resultant image has increased density. Increasing kVp also increases the mean energy of the beam (quality) which means the beam has more penetrating power... therefore, the resultant image has decreased contrast. Increasing filtration decreases the relative number of photons (quantity) and therefore decreases the intensity of the x-ray beam... therefore, the resultant image has decreased density. All of this is correct as shown in the table! However, this last point I want to make a correction. There are some nuances related to noise and scatter that convolute the issue, so instead I would encourage you to remember this: increasing filtration also INCREASES the mean energy of the beam (quality) by preferentially filtering out the lower energy photons which means the beam has more penetrating power... therefore, the resultant image has DECREASED contrast, not increased contrast.

mentaldental

Hi Ryan . I am a oversea student, when I came Us, English is the second language it’s mean I have study double . I was keeping watching your video every day, everytime I can ( I still work full time and study) . I passed today ! Thank you so much for sharing because Covid times, no school, no one teaching me . Thanks Ryan 🙂!

vyvo

Listened to this in the car on my way to take my test and I fully credit this to my passing grade. Perfect refresher and the way you related the answers is very helpful. I appreciate you!

Hallo_gt

Just can't get enough of this High-quality education by @Mental Dental.

theCLEARinstitute

In much shorter time I'm getting more and more educated AND interested about dentistry topics from Dr. Ryan than from college professors combined, thank you is just not enough🙏🙏💙

حيّز-جخ

Your video are a Life saver for me, I’m an RDA student, and you help me understand things better. Thank you.

Mapi

Radiology had never been my cuppa tea.. until I started watching your videos! xD
Thank youu for all these simplified explanations! :D

Nc-egir

OMG you are the best as soon as im done studying my notes i come and watch your videos to get a better understanding .

breahatcher

Amazing work ! Thank you so much on behalf of everyone who watched this!

iam_ligi

I wish my professors in 1980 were so clear. I am retaking boards again, moved states again, need to retake boards. I didn’t get this before. I only beginning. Thank you.

dancindebs

Trying to study for my DANB Certification and "BAM" I find you. thank you so much I understand Dental X-Rays, Radiation so much

jrosado

Keep them comming. Radiology's is my favorite because it's the field I want to master thank you for your videos

armandogrijalvaiii

Hey Ryan, As always great videos with excellent information given in nut shell. In the last slide, the table is stating "Energy" and in the same column it is mentioned about the "contrast". But as you said they don't go hand in hand. You mentioned in the previous slide/comment.. about Higher KVP and Higher Filtration will lead to "Higher Energy" photons. So with "Higher KVP" -- "Energy" of the photons will "Increase" -- and "Contrast" will "Decrease" (as there is more penetrating power)

sejalmehta