INTRO TO RAD (week 1)

Atoms and molecules are the fundamental building blocks of ____

The function of an x-ray grid is to

In the United States, we are exposed to ______ MTV/year of ionizing radiation from the natural environment

The source of radiation in an x-ray tube (the anode) shall not be closer than _____ inches from the patient

The purpose of rotating the x-ray tube target is to

The central or principle beam of x-rays is termed the

____ is a special quantity of radiologic science.

The general goal for central ray placement is

A device used to control the size of the radiation field is a

Which formula represents the relationship between wavelength, frequency and velocity of an electromagnetic wave?

An electron cloud surrounding a hot cathode is referred to as a(n)

The best source of man-made ionizing radiation exposure to the public is ____

Mass is the quantity of matter as described by its energy equivalence

An x-ray machine designed for direct viewing of the x-ray image is called a(n)

The majority of radiography education programs today are based in

Which has the shortest wavelength?

The energy of x-rays is _____

Radiographers can control voluntary motion by

The formula E=mc^2 is the basis for the theory that led to the development of _____

Gonadal shielding can negatively impact exam efficacy was first stated in a position statement by the

Computed tomography was developed in the?

The container for the vacuum of the x-ray tube is made of

Ionizing radiation is capable of removing _____ from atoms as it passes through matter

Which term refers to the restriction of the exposure field?

What is the removal of an electron from an atom called?

_____ is used in DR to provide a black background around the original collimation edges.

Who invented the fluoroscope & investigated hundreds of fluorescent materials.

Filtration is used to _____

Radiology emerged as a medical specialty because of the snook transformer and the Crooks x-ray tube

Grids or Becky’s are generally used for body parts that measure greater than

Which of the following is NOT accurate statement regarding the characteristics of x-ray?

A moving object has ______ energy

Which type of radiation forms the x-ray image?

Device is located between the x-ray tube & the control panel that increases voltage delivered from the power co.

Which of the following substances is most readily penetrated by x-rays?

Ionization is the removal of an electron from an atom

The access point for the radiographer to determine the exposure factors & to initiate the exposure is called

Radiographic images of the hands, wrist, feet and toes are routinely displayed with the digits

Radiographs are usually oriented on the display monitor in a(n) _________ position.

What is the most common image receptor general position?

What is another term for remnant radiation?

An imaginary photon that is emitted from the center of the focal spot, perpendicular to the long axis of the x-ray tube

The frequency of an electromagnetic sine wave is defined as

Today, radiology is considered to be a(n) _____ occupation

Defined as the distance from the anode focal spot inside the x-ray tube to the image receptor

The simplest and most common type of compensating filter is the

Who invented the hot cathode x-ray tube, the prototype of modern x-ray tubes?