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RADIOLOGIC TECHNOLOGY BASICS AND FUNDAMENTALS

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Radiologic Technology Basics and Fundamentals is a comprehensive guide designed for students, professionals, and anyone interested in the field of radiologic technology. This document provides a clear and concise overview of the foundational principles, techniques, and equipment used in diagnostic ...

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  • December 23, 2024
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  • 2024/2025
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X-RAY PRODUCTION

ELECTRON TARGET INTERACTIONS

A. KINETIC ENERGY

energy in motion

High KE: High Kvp: high x-ray quality : high x-ray quantity

B. PROJECTILE ELECTRONS

electrons travels from cathode to anode

Interacts in tungten atom by tranferring its KE to W atom

Electron ins REST state

Projectile electron interaction

OUTER SHELL / INNER SHELL

NUCLEAR FIELD

Production of Heat/ Infrared/ radiation

99% HEAT
1 % x-ray
How:
electrons in exited state level / higher
energy level
NO IONIZATION of electrons

ANODE HEAT
Production:
high tube current: high heat


Interaction:
OUTER SHELL ELECTRONS




CHARACTERISTIC X-RAY 1% X- ray


INTERACTION: INNER SHELL ELECTRON


How?



X-RAY PRODUCTION 1

, Total removal of electron from the atom,
then outer shell fills the INNER VOID


ionized electron from K shell, Lshell
electrons fills the K shell void : emission of
x-ray : K- xrays….


only the K- characteristic x-rays are useful
in imaging


69 kVP



CHARACTERISTIC X-RAY SPECTRUM


ELECTRON BINDING ENERGIES


energy: fixed / discrete energies


K- xrays : only characteristic x-rays:
diagnostic x-ray



69 kev




BREMSSTRAHLUNG X-RAY 1% x-rays
INTERACTION: NUCLEAR FIELD


Braking of projectile electron



how?
Electrostatic Force between the nucleus
and projectile electron


projectile electron passes by the nucleus
and slows down and changes its course
leaving reduce KE


loss of KE: emission of x-ray


dependent on the loss KE



X-RAY PRODUCTION 2

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