X-ray Golden Formulas - Part 1

[@Jgal-est99]

This was great! Exactly what I wanted. A quick simple explanation

[@MiguelReyes-yn5bg]

I come back here for every test

[@deshenaharvey1999]

Thank you so much!!!

[@florencesandjo7861]

"A radiograph is performed using 40 mAs, 80 kVp with a 100 cm SID receptor distance, a 40 cm object-to-image receptor distance, and a 2 mm focal spot. The magnification factor: I found MF = 1.66. Thank you so much.

[@RockTheRegistry]

You got it! A+

[@frankyja7638]

What formula would I use to solve this problem “If the exposure at 2m =18 R/min, what is the exposure at 6m from source?” Answer choices are A.162R B.54R C.2R D.6R

[@RockTheRegistry]

Inverse square law.

[@frankyja7638]

Rock The Registry Thank you!!

[@gigiknoxx8878]

@@RockTheRegistry Can i ask for the formula of this too? A radiographic exposure of the pelvis was taken at a distance of 40" using 25mAs and had an exposure of 100 mR. What would be the exposure be at a distance of 65"?

[@kirilzlatarski]

2

[@jaquta69]

Thank you, this was sooo helpful.

[@wolken4418]

What formula should I use when the question says theres an increase or decrease on kVp but what theyre looking for is seconds.

[@RockTheRegistry]

Hmm, I don't understand the question.

[@jenniferthompson4220]

Thank you ----Jennifer (APSU)

[@user-xc2ub4pn6g]

link to your 53 free questions doesn't work

[@michaelsantos2849]

Hey, what if you are going from a 5:1 grid to an 8:1? what would happen to the kVp

[@RockTheRegistry]

Hi, I'm just now seeing this comment! Sorry for the delay. The formula is New GF / Old GF so 4/2. Basically, multiply the mAs times 2.