# Calculators

## X-Ray Tech Exposure Calculator, 5 Simple relationships that guide Technical Parameters In X-Ray Imaging

An interactive calculator for changing multiple technical parameters (kVp, SID, s, Bucky Factor) in and observing the effect on the mA needed to keep the exposure on the image receptor constant. Great for studying for your ARRT boards or brushing up to sharpening your technical parameter skills for Radiography exams. X-Ray Exposure Calculator Overview of …

## Interactive calculator for Rad Techs for x-ray stopping power of different materials (water, lead, air, etc).

An interactive calculator for answering the question: what is the thickness of material A that we would need to match the x-ray transmission through a given thickness of material B. For instance how much water is equivalent to 1mm of lead in stopping an 50 keV x-rays? If you have been loosing sleep over such …

## Hands on Calculator for Technical Parameters In CT Imaging, and their effect on patient dose

A review of radiation dose measurements in CT and a calculator for changing multiple technical parameters (kVp, pitch, s) and observing the effect on the mA needed to keep the dose relatively constant. We also provide a couple use cases that would motivate changing the technical parameters of a protocol at the time of scanning. …

## Simple Calculator for Effective Dose in CT (DLP -> Eff Dose): Radiologic Technologist’s guide to Effective Dose (mSv) in CT from Dose Length Product (mGy cm)

Here is a simple calculator to compute the Effective Dose (mSv) from the Dose Length Product (mGy cm) for a CT exam of a single organ. In this article we review how dose measurements are made and how the Effective Dose is related to the Absorbed dose, and the approximation that is used in CT …

## Interactive X-Ray Transmission Calculator for Radiologic Technologists (Beer’s Law Equation)

This is a calculator the transmission, (fraction of the x-ray beam), that will penetrate different thickness of materials such as water, bone, air and lead. This calculator is useful to get a sense of what fraction of the x-ray beam will pass through different objects. The calculator has the option for a few energies of …