introduction to radiologic technology unit 3 to 4

Origins of Radiology

1895

discovered the X-ray

Wilhelm Rontgen

Radiology

It is a branch of medicine that uses imaging technology to

diagnose and treat disease.

Radiologist

It refers to a physician who applies any form of radiation

in the diagnosis and treatment of disease.

Radiography

It is an imaging modality that uses x-ray film and usually an x-ray tube mounted from the ceiling on a track that allows the tube to be moved in any direction; provides fixed images.

Radiographer

It refers to a radiologic technologist who deals

specifically with x-ray imaging.

Radiologic Technology

It is the art and science of using radiation to provide images of the bones, organs, soft tissue and vessels that comprise the human body.

Radiologic Technologist

They are the health care professionals who perform diagnostic imaging procedures, such as X-ray examinations, magnetic resonance imaging (MRI) scans and computed tomography (CT) scans.

He produced the first recognized vacuum when he

invented the barometer.

Evangelista Toricelli

He invented an air pump capable of removing air

from a tube.

Otto Van Guericke

He is the first to study electricity and magnetism in

detail.

William Gilbert

He built and improved the static generator.

Isaac newton

He distinguished two kinds of electricity with the

use of glass, silk and paper.

Charles du Fay

He improved the electroscope which is a vessel for discharging electricity under the vacuum. The electroscope is considered to be the forerunner of the x-ray tube.

Abbe Jean-Antoine Nollet

He is also a pioneer in the study of electricity.

Benjamin Franklin

He demonstrated electrical current through transmission of electricity from a Leyden jar through wires in a vacuum tube.

William Watson

He induced an electric current by moving a magnetin and out of the coil which is then developed into electromagnetic induction and used to produce better generators and transformers.

Michael Faraday

He conducted several experiments with cathode rays, which are streams of electrons emitted from the cathode.

Johann Wilhelm Hittorf

He demonstrated that matter was emitted from the cathode which has enough energy to rotate a wheel placed within the tube.

William Crookes

He produced a radiograph in 1890, However his achievement was recognized only in retrospect and after the discovery of x-rays by Roentgen.

William Godspeed

In the 1870s–1880s, scientists used

Crookes tubes

a self-taught English scientist, developed the Crookes tube, the ancestor of modern X-ray tubes and fluorescent lamps.

Sir William Crookes

Roentgen tested different materials

(wood, aluminum, even his hand)

uses film or a solid-state image receptor and usually an x-ray tube mounted from the ceiling on a track that allows the tube to be moved in any direction.

Radiography

is usually conducted with an x-ray tube located under the examination table.

Fluoroscopy

Demonstrated use of intensifying screen

Michael Pupin (1896)

uses a rotating x-ray source and detector array. A volume of data is acquired so that fixed images can be reconstructed in any anatomical plane—coronal, sagittal, transverse, or oblique.

Computed tomography

where awarded a Nobel prize in physics for

their work in radioactivity.

Pierre Curie, Marie Curie and Henri Becquerel

noticed that the radium killed diseased cells, which was the first suggestion of the medical utility of radioactivity.

Pierre Curie

refined the knowledge of radioactivity and purified the radium metal.

Marie Curie

In 1932, Ernest Lawrence

invented the cyclotron which is a chamber

that is used to accelerate particles to high speeds for use as projctiles.

made a significant breakthrough when he demonstrated a successful chain

reaction in a Uranium pile which is then developed into nuclear weapons and

is used to bomb Nagasaki and Hiroshima in Japan.

Enrico Fermi

Used double-emulsion plates to cut

exposure in half

Charles Leonard (1904)

Advancements in Fluoroscopy

Invented by Thomas Edison (1898)