Deck 10: Electromagnetic Radiation: Laser, Ultraviolet, and Diathermy

Question 1

Which of the following statements most accurately represents the role of the United States Food and Drug Administration (FDA) as a regulatory agency and its influence involving devices that are introduced into the physical therapy clinical environment?

A)The FDA is a regulatory commission that has no impact on what is done in the clinical environment.
B)The FDA controls what devices can be sold in the USA.
C)The FDA assures public safety by requiring that prior to being approved, devices must be proven safe and effective.
D)The FDA is a regulatory agency that delays progress requiring paperwork before products can be marketed in the USA.

Answer 1

C

Question 2

The bending of energy that is related to the source of the energy, referred to as the incident angle of the energy delivered is the definition of which of the following?

A)Reflection
B)Absorption
C)Refraction
D)Frequency

Answer 2

C

Question 3

Diathermy utilizes wavelengths from the EM spectrum that are highly regulated. What entity is responsible for the regulation of the "airwaves?"

A)The Federal Trade Commission
B)The Food and Drug Administration
C)The Federal Communications Commission
D)No one; airwaves are not regulated.

Answer 3

C

Question 4

Which of the following does not represent a treatment goal of UV?

A)Erythemal response within 12 hours of initial exposure
B)Pigmentation-thickening of the stratum corneum of the skin
C)Destruction of bacteria in wounds and ulcers
D)Muscle-guarding reduction

Question 5

The amount of heat generated in deeper tissues will be directly proportional to the creation of eddy currents that have been induced perpendicular to the source of the EM energy. What is the term that is used to describe water-containing molecules, which influence whether or not they will rotate in response to the application of diathermy?

A)Ions
B)Dipoles
C)Monocytes
D)Erythrocytes

Question 6

Of what potential significance is maintaining a consistent distance between radiant light sources and the patient?

A)There is no significance.
B)If you increase the distance, the dosage will increase.
C)If you decrease the distance, the dosage will increase.
D)The inverse square law applies and will adversely affect the dosage with any change in distance from the patient.

Question 7

What does a rainbow have to do with the EM spectrum?

A)A rainbow has nothing to do with the EM spectrum.
B)A rainbow is an example of the visible wavelengths of light in the EM spectrum.
C)A rainbow is a myth.
D)A rainbow represents each of the colors of the EM spectrum and is identical to the light that a laser is capable of producing.

Question 8

Which of the following statements best reflects how laser light differs from other forms of light?

A)Laser is an acronym; white light is not an acronym.
B)Laser light is monochromatic and white light is multi-chromatic.
C)Laser light is non-collimating and white light is collimating.
D)Laser light is ionizing and white light is non-ionizing.

Question 9

The application of diathermy as a potential treatment intervention in physical therapy is based upon which of the following?

A)As a conductive heat source
B)As a convective heat source
C)As a heat source that works by conversion
D)Diathermy is not a heat source

Question 10

Which of the following represents a potential use for UV as a treatment intervention in physical therapy?

A)Preparation of wound beds for healing
B)Psoriasis
C)To kill MRSA
D)UV is not a potential treatment intervention in physical therapy.