Skip to main content

Why aren't grids/rasters circular?

By

Just started radiography-education about a month ago, and we've now arrived at grids, all of them (I've been introduced to at least) having straight slits, and some being layered + turned 90 degrees + Bucky ofc.

I'm wondering: If the x-rays are emitted in a cone from the anode towards the patient -> grid -> sensor, it would seem intuitive to use a filter that is angled out equally from the center in all directions (i.e ring-slits angled towards the anode). My guess would be that this would minimise Compton-blur more evenly without loosing as much image/dose.

Is it manufacturing costs, higher need for proper placement of the grid, or am i missing something obvious?

Studying in Denmark, so sorry if some of the terms are a bit off.

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

source https://www.reddit.com/r/Radiology/comments/y30qp8/why_arent_gridsrasters_circular/
Labels:

Comments

Post a Comment

Popular posts from this blog

I got into the Rad Tech program!

By
I just want to share with you that I finally got into the program at our local community college and i’m starting this summer. For context, I’m already 30yo with a prior BS degree and decided on a career change. During the pandemic until this semester, I took my time to take all the pre-reqs and GEs required while working. I also volunteered at a hospital for over a year. It was optional due to COVID, but I still did it to get the brownie points. I finally applied last March 2023 and received good news last Friday. The program is based on a pointing system, so I think having good grades really mattered. It was my first time applying and the only program I applied to. I didn’t know it was possible to get in on your first try because of all of the stories I’ve been reading, so don’t lose hope because it’s possible! Wishing everyone who’s applying this year good luck. You can do this! If you have questions, I will do my best to answer them 😊 also if you have tips on how to survive this ...
Post a Comment
Read more

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

Question regarding ultrasound

By
Hello radiologists, I have a quick question regarding ultrasounds of the scrotum. (Not asking for medical advice just wondering about something). I’ve done an ultrasound of the scrotum and the radiologist only took pictures of the right side of the testicle and then the left side but not in between so my question is, do ultrasounds show all “angles” of a testicle or does the device need to be held at various areas to show a full testicle? Because if only one side of the testicle is seen then wouldn’t the other side be as important in diagnosing something? Thanks! submitted by /u/doomyboomy [link] [comments] source https://www.reddit.com/r/Radiology/comments/oi2nmk/question_regarding_ultrasound/
Post a Comment
Read more