|
Laryngitis
|
D007827 |
[Inflammation of the LARYNGEAL MUCOSA, including the VOCAL CORDS. Laryngitis is characterized by irritation, edema, and reduced pliability of the mucosa leading to VOICE DISORDERS such as APHONIA and HOARSENESS.
] |
|
Laryngocele
|
D059608 |
[Congenital anomalous dilitation of the laryngeal saccule that may extend internally into the airway or externally through the thyrohyoid membrane.
] |
|
Laryngomalacia
|
D055092 |
[A congenital or acquired condition of underdeveloped or degeneration of CARTILAGE in the LARYNX. This results in a floppy laryngeal wall making patency difficult to maintain.
] |
|
Laryngopharyngeal Reflux
|
D057045 |
[GASTROESOPHAGEAL REFLUX wherein the retrograde flow passes through the UPPER ESOPHAGEAL SPHINCTER
, Back flow of gastric contents to the LARYNGOPHARYNX where it comes in contact with tissues of the upper aerodigestive tract. Laryngopharyngeal reflux is an extraesophageal manifestation of GASTROESOPHAGEAL REFLUX.
] |
|
Laryngoplasty
|
D058753 |
[A type of LARYNGOPLASTY carried out via the THYROID CARTILAGE.
, Surgical manipulations of the LARYNGEAL CARTILAGES to provide support and or bulk to defective, damaged or atrophied VOCAL CORDS as well as pitch adjustments.
, Restoration, reconstruction, or improvement of a defective or damaged LARYNX.
] |
|
Laryngoscopes
|
D020704 |
[Endoscopes for examining the interior of the larynx.
] |
|
Laryngoscopy
|
D007828 |
[Examination, therapy or surgery of the interior of the larynx performed with a specially designed endoscope.
] |
|
Laryngostenosis
|
D007829 |
[Developmental or acquired stricture or narrowing of the LARYNX. Symptoms of respiratory difficulty depend on the degree of laryngeal narrowing.
] |
|
Larynx
|
D007830 |
[A tubular organ of VOICE production. It is located in the anterior neck, superior to the TRACHEA and inferior to the tongue and HYOID BONE.
] |
|
Larynx, Artificial
|
D007831 |
[A device, activated electronically or by expired pulmonary air, which simulates laryngeal activity and enables a laryngectomized person to speak. Examples of the pneumatic mechanical device are the Tokyo and Van Hunen artificial larynges. Electronic devices include the Western Electric electrolarynx, Tait oral vibrator, Cooper-Rand electrolarynx and the Ticchioni pipe.
] |
|
Lasalocid
|
D007832 |
[Cationic ionophore antibiotic obtained from Streptomyces lasaliensis that, among other effects, dissociates the calcium fluxes in muscle fibers. It is used as a coccidiostat, especially in poultry.
] |
|
Laser Capture Microdissection
|
D061346 |
[Techniques using a laser to cut away and harvest a specific cell or cluster of cells from a tissue section while viewing it under the microscope.
] |
|
Laser Coagulation
|
D017075 |
[The use of green light-producing LASERS to stop bleeding. The green light is selectively absorbed by HEMOGLOBIN, thus triggering BLOOD COAGULATION.
] |
|
Laser Scanning Cytometry
|
D047569 |
[A scanning microscope-based, cytofluorimetry technique for making fluorescence measurements and topographic analysis on individual cells. Lasers are used to excite fluorochromes in labeled cellular specimens. Fluorescence is detected in multiple discrete wavelengths and the locational data is processed to quantitatively assess APOPTOSIS; PLOIDIES; cell proliferation; GENE EXPRESSION; PROTEIN TRANSPORT; and other cellular processes.
] |
|
Laser Speckle Contrast Imaging
|
D000081982 |
[Two-dimensional imaging created from the quantification of the blurring of speckle (randomly varying intensity patterns of light seen after it is scattered through a medium) that occurs spatially or temporally. LSCI is used for measuring blood flow in tissues such as the retina, skin, and brain.
] |
|
Laser Therapy
|
D053685 |
[The use of a laser either to vaporize surface lesions or to make bloodless cuts in tissue. It does not include the coagulation of tissue by laser (LASER COAGULATION).
, The utilization of photothermal effects of LASERS to denature COLLAGEN without destroying tissue.
, The use of photothermal effects of LASERS to coagulate, incise, vaporize, resect, dissect, or resurface tissue.
] |
|
Laser-Doppler Flowmetry
|
D017078 |
[A method of non-invasive, continuous measurement of MICROCIRCULATION. The technique is based on the values of the DOPPLER EFFECT of low-power laser light scattered randomly by static structures and moving tissue particulates.
] |
|
Laser-Evoked Potentials
|
D066331 |
[Somatosensory evoked potentials generated through the application of HEAT to the SKIN with a LASER. They are often used clinically to assess the function of the central nociceptive system and in diagnosing NOCICEPTIVE PAIN.
] |
|
Lasers
|
D007834 |
[An optical source that emits photons in a coherent beam. Light Amplification by Stimulated Emission of Radiation (LASER) is brought about using devices that transform light of varying frequencies into a single intense, nearly nondivergent beam of monochromatic radiation. Lasers operate in the infrared, visible, ultraviolet, or X-ray regions of the spectrum.
, The microwave equivalent of LASERS.
] |
|
Lasers, Dye
|
D054025 |
[Tunable liquid lasers with organic compounds (i.e., dye) which have a strong absorption band, used as the active medium. During emission, the dye has to be optically excited by another light source (e.g., another laser or flash lamp). The range of the emission wavelength may be anywhere from the ultraviolet to the near infrared (i.e., from 180 to 1100nm). These lasers are operated in continuous wave and pulsed modes. (UMDNS, 2005)
] |
