Tag Archives: CR

iSupertech Digital X-Ray Calculator

Digital Radiography Solutions has combined forces with Judy McNitt-mell of Supertech and Ron Reed of Dev App Central, LLC to create the first ever app for digital radiography techniques.  It’s called the iSupertech Digital X-Ray Technique Calculator and can be downloaded and used on iPhones, iPods and iPads. At the

Using Too Much mAs Legal Issues, Part 4

Today I want to discuss the possibility of your facility being sued for using too much mAs (over radiating/over dosing) the patient with CR or DR general radiography. This sort of takes us back to the first blog I ever posted (January 1st, 2013) where I discussed Creeping Dose. The

Optimum kV for DR & CR Equipment

As soon as the film-screen combination was developed in our profession, there has been optimum kVs used for every body part.  Even when Rare Earth screens came on the market in the early 80’s and the mAs was cut to one third (from 9 to 3 for example) the kV

Grid Cut-Off in the Digital World

After years of wondering about it, sometimes noticing it and finally researching it, I’ve come to the conclusion that grid cut-off isn’t mentioned anymore because no one even knows it’s happening.  With film it was totally obvious because grid lines covered 50-100% of the image.  That is not the case

The Trouble with Post Processing “Collimation”

Post processing “collimation”, shuttering or cropping seemed to be one of the greatest features of digital radiography.  With our first CR unit we were taking badly collimated chest x-rays and then with a couple of mouse and key strokes turning in images that looked like we were the best collimating

Problems with Exposure Index (EI) Numbers

When Fuji first developed CR back in the early 80’s, they were also the first company to invent an Exposure Index (EI) number system.  As most of us know, they went with S numbers and decided to have those numbers correspond with the speed of film –screen systems so that the higher