MRI P3

Lorentzian force

The total force on a charged particle moving through both a magnetic field and an electric field

Electric field

Motion less electron

Electric and magnetic field

Electron in motion (spinning)

Lorentzian force

The total force on a moving electron is the sum of the forces caused by external electric and magnetic fields

Solenoid

A helically wound coil of wire

Solenoid

A coil of current-carrying wire produces a magnetic field

Electromagnet

A coil of current-carrying wire produces a magnetic field with an iron core

Motor

A device that converts electric energy into mechanical energy

Generator

Converts mechanical energy into electric energy

Transformer

Alters the magnitude of electric current and voltage

Faraday’s law

A force is exerted on a current-carrying wire in the presence of a magnetic field

Faraday’s law

Force is perpendicular to both the magnetic field and the direction of electron flow

Transformer

A ________ consists of coils on a ferromagnetic core

Maxwell’s wave equations

Described visible light as oscillating electric and magnetic fields

Visibile window

Visible light interacts as a wave (400-700 nm)

Faraday cage

Provides radiofrequency shielding to the scanning room to minimise occurrence of interference-associated imaging artifact

540-1640

Standard commercial AM broadcast operates from approximately ____ kHz

50-200

FM radio and television occupy a band of frequencies from approximately ____ MHz

MRI window

Uses RF in the frequency range of approximately 10 to 200 MHz for imaging

X-ray window

Utilizes x-rays (20-150 keV) for imaging internal structures

Visible window

Used for surface imaging, with detection by rods, cones, or photographic film