Skip to main content

Can someone ELI5 what is optical density?

By

I’m sorry for asking such a basic question but I just don’t get. With regards to film-screen radiography and the characteristic curve, what is meant by optical density? I’ve googled it and I’m seeing stuff about absorbance and the degree of light intensity transmitted through a medium. But I still don’t get it in the context of radiology. Excluding the toe and shoulder of the characteristic curve, OD appears to be somewhat proportional to the kerma so the more photons passing on to the film, the higher the OD. But then how is OD a measure of how “absorbent” something is? Isn’t it the exact opposite of that?

submitted by /u/Bitsoft
[link] [comments]

source https://www.reddit.com/r/Radiology/comments/pf8bim/can_someone_eli5_what_is_optical_density/
Labels:

Comments

Post a Comment

Popular posts from this blog

Do rad techs/sonographers deal with vomit often?

By
Hi there! I’m currently considering going to school to be a rad tech or sonographer but I’m struggling to find out if you guys deal with vomit a lot. I am emetophobic (phobia of vomit) and, while I think I’d like these jobs a lot, it does worry me to think about having to deal with it often. Thank you for your help! submitted by /u/pootscoot1 [link] [comments] source https://www.reddit.com/r/Radiology/comments/p5y0aa/do_rad_techssonographers_deal_with_vomit_often/
Post a Comment
Read more

Far progressed rheumatoid arthritis. Secondary finding in CTA in a patient with righthemispherial MCA Syndrome.

By
submitted by /u/MoronimusVanDeCojck [link] [comments] source https://www.reddit.com/r/Radiology/comments/kcrm49/far_progressed_rheumatoid_arthritis_secondary/
Post a Comment
Read more

Radiology program

By
I’m from New York looking to attend a Rad tech program. I work for Northwell and recently came across a flyer for John Patrick University. it is an online AS program with clinicals in person (which my job will allow me to do) It seems as if this program is not accredited by JCERT but the school is accredited by ACCSC. I reached out to the director of the school and also the arrt and they say that there would be no issue taking boards. I haven’t really heard of anyone going through online program so I wanted to make sure everything checks out. Since this was being advertised at work I couldn’t see why they would put something that wouldn’t be accepted out. This is the link https://jpu.edu/associate-science-radiologic-technology-degree/?amp submitted by /u/Wonderful-Rhubarb394 [link] [comments] source https://www.reddit.com/r/Radiology/comments/14q4aya/radiology_program/
Post a Comment
Read more