Light in Medicine Applications

<p>Fluorescence (A)</p> Signup and view all the answers

<p>100 to 400 nm (A)</p> Signup and view all the answers

<p>400 to 700 nm (D)</p> Signup and view all the answers

<p>Acoustic light (B)</p> Signup and view all the answers

<p>Very smooth surface (A)</p> Signup and view all the answers

<p>Observing patterns of cerebrospinal fluid reflection (B)</p> Signup and view all the answers

<p>By showing light reflection from the chest wall (D)</p> Signup and view all the answers

<p>Exposure to visible light (A)</p> Signup and view all the answers

<p>Leading to skin cancer (A)</p> Signup and view all the answers

<p>UV photons can kill germs more effectively (B)</p> Signup and view all the answers

<p>It converts molecular products into vitamin D (D)</p> Signup and view all the answers

<p>Surgical instruments (C)</p> Signup and view all the answers

<p>Cornea and lens (B)</p> Signup and view all the answers

<p>290 - 320 nm (D)</p> Signup and view all the answers

<p>Visible light (C)</p> Signup and view all the answers

<p>Radiance (C)</p> Signup and view all the answers

<p>Cystoscope (A)</p> Signup and view all the answers

<p>To allow for tissue biopsy (A)</p> Signup and view all the answers

<p>It typically results in tissue destruction. (B)</p> Signup and view all the answers

<p>Ruby laser (B)</p> Signup and view all the answers

<p>Endoscopes are used to view internal body cavities and often have light sources and magnifying attachments. (C)</p> Signup and view all the answers

<p>Enteroscope (B)</p> Signup and view all the answers

<p>The temperature of the tissue rises rapidly. (C)</p> Signup and view all the answers

<p>They can be used to examine areas that are difficult to reach with rigid endoscopes. (C)</p> Signup and view all the answers

<p>To photocoagulate the retina. (C)</p> Signup and view all the answers

<p>It allows for vaporization of small regions without harming surrounding tissue. (D)</p> Signup and view all the answers

<p>1 second (B)</p> Signup and view all the answers

<p>Energy is delivered in constant streams. (A)</p> Signup and view all the answers

<p>Efficient welding of the retina to the choroid. (B)</p> Signup and view all the answers

<p>It can induce a burn on the retina. (A)</p> Signup and view all the answers

<p>A large percentage of sunlight is infrared energy. (A)</p> Signup and view all the answers

<p>Reflective IR photography (A)</p> Signup and view all the answers

<p>When an incoming photon induces an electron to emit another photon. (A)</p> Signup and view all the answers

<p>Narrow beam with a single wavelength. (B)</p> Signup and view all the answers

<p>Through population inversion and stimulated emission. (A)</p> Signup and view all the answers

<p>14000 to 900 nm (C)</p> Signup and view all the answers

<p>Photons are emitted randomly in various directions. (A)</p> Signup and view all the answers

Ratio of the speed of light in vacuum to its speed in a material (n = c/v).

Light behaves as both a wave (interference, diffraction) and a particle (photon absorption).

When absorbed, light energy appears as heat, used in medical applications like heating tissues.

Process where absorbed light leads to the emission of a lower energy photon.

Reflection from smooth surfaces like mirrors, creating clear images.

Scattering of light in many directions from rough surfaces.

Light with wavelengths from 100 to 400 nm, just beyond visible spectrum.

Light with wavelengths from 700 to 1000 nm, felt as heat.

Type of ultraviolet light with wavelengths from 320 to 400 nm.

Type of ultraviolet light with wavelengths from 290 to 320 nm.

Type of ultraviolet light with wavelengths from 100 to 290 nm.

The quantity of light striking a surface, measured in photometric units.

The intensity of a light source, also measured in photometric units.

The quantity of light striking a surface, measured in radiometric units.

The intensity of a light source measured in radiometric units.

Medical instruments used to view internal body cavities, often equipped with light and optical attachments.

Transmission of light through body tissues for medical examination.

Using light to diagnose excess cerebrospinal fluid in the skull.

Using light reflection to assess a collapsed lung in infants.

Using visible light to treat jaundice in premature infants.

Ultraviolet light kills germs and sterilizes medical tools.

UV light causes skin reactions, both beneficial and harmful.

Infrared rays are generally safe and not hazardous to the retina.

UV light is absorbed by DNA, increasing skin cancer risk.

The amount of power per unit area, significant in laser applications.

The maximum temperature tissue can withstand without being damaged.

A type of laser that emits energy in short bursts (pulses).

A laser that emits a constant beam of light without interruption.

Medical procedures using lasers on the eye to treat conditions like retinal detachment.

The process of using laser energy to coagulate blood vessels in the retina.

The power output at an exact moment, particularly during a short laser pulse.

Damaging effects of laser heat on living tissue, depending on exposure duration.

Wavelengths from 700 nm to 1 mm, felt as heat.

Uses 700 to 900 nm wavelengths to visualize veins under the skin.

Uses long IR waves (14000-900nm) to indicate body temperature.

Includes spontaneous emission and stimulated emission of photons.

Occurs when an incoming photon induces an electron to emit more photons.

Condition where more electrons are in excited states than in lower energy states for laser operation.

Emitted photons travel in the same direction and are in phase with each other.

Acronym for Light Amplification by Stimulated Emission of Radiation.