Low Power Laser

Question 1

laser stands for

Answer 1

light amplification by stimulated emission of radiation

Question 2

device that produces light is blank

Answer 2

monochromatic/collimated/coherent

Question 3

Single wavelength

Single color

Answer 3

monochromatic

Question 4

Does not spread or diverge with distance

Able to be focused precisely on a small area

Answer 4

collimation

Question 5

Photons in phase temporally and spatially

Answer 5

coherence

Question 6

gaseous laser gases

Answer 6

helium neon

Question 7

gallium, aluminum, arsenide make up these lasers

Answer 7

diode

Question 8

gaseous resonance chamber is blanked while diode has a blank

Answer 8

sealed, gap

Question 9

Electric current passes through resonance chamber stimulating laser’s active medium

Answer 9

power source

Question 10

lasers with HeNe

Answer 10

red light lasers

Question 11

lasers with GaAIAs and GaAs and diode type

Answer 11

infrared light

Question 12

contains only one diode of a specific lasing medium

Answer 12

single diode

Question 13

contains a group of diodes that may be of differing lasing mediums

Answer 13

cluster diode

Question 14

Class blank lasers can damage the retina if the laser beam is focused on the eye.

Answer 14

3b

Question 15

the process of stimulating or inhibiting (modulating) the biologic responses of cells due to exposure to light

Answer 15

photobiomodulation

Question 16

increase cell function effect of laser

Answer 16

photobiostimulation

Question 17

decrease cell function effect of laser

Answer 17

photobioinhibition

Question 18

dose response of laser follows this principle

Answer 18

arndt shultz

Question 19

photon absorption follows law of blank

Answer 19

grotthus draper

Question 20

(color lover) a photo-acceptor molecule
Melanin – skin darkening
Hemoglobin – RBC
Retinal rhodopsin – color vision

Answer 20

chromophores

Question 21

shorter wavelengths scatter blank than longer wavelengths

Answer 21

more

Question 22

absorption is inversely proportional to penetration, and is greater for blank wavelengths

Answer 22

shorter

Question 23

Dependent upon frequency of laser light and tissue being irradiated

Answer 23

depth of penetration

Question 24

HeNe lasers are blank penetrating than GaAs or GaAlAs lasers

Answer 24

less

Question 25

blank penetration occurs by absorption while blank occurs in deeper tissues

Answer 25

direct, indirect

Question 26

Al Ga As laser produces a blank shaped beam

Answer 26

elliptical

Question 27

lllt causes increased Mast cell release
Interleukin 6 formation (inflammatory regulator)
Decreased dermal necrosis

Answer 27

acute phase

Question 28

lllt causes Wound contraction

Tensile strength/stress

Answer 28

chronic

Question 29

lllt causes
Enhanced collagen formation
Degranulation
Myofibroblast conversion

Answer 29

subacute

Question 30

power (P) delivered per area of laser probe (cm2)

Answer 30

power density

Question 31

Energy delivered per area of laser probe x time of irradiation

Answer 31

energy density

Question 32

amount of laser energy delivered by each diode in joules

Answer 32

dose per diode

Question 33

Total amount of laser energy delivered to the tissue

in joules

Answer 33

dose tissue

Question 34

laser power output is uninterrupted for entire time of irradiation

Answer 34

continuous

Question 35

laser power output is constantly interrupted for entire time of irradiation

Answer 35

pulsed

Question 36

number of joules for power during lllt increases with blank

Answer 36

stage of healing

Question 37

contraindications for lllt

Answer 37

over eyes, over malignancy, pregnant, epilepsy, over thyroid