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| DCS | decompression sickness; dense canalicular system; diffuse cortical sclerosis; dorsal column stimulat... |
|---|---|
| VATS | Video Assisted Thoracoscopic Surgery, Video-assisted thoracic surgery |
| AVT | Allen vision test; arginine vasotocin; Aviation Medicine Technician |
| CCT | carotid compression tomography; central conduction time; cerebrocranial trauma; chocolate-coated tab... |
| CECT | contrast-enhanced computed tomography |
| VEC-DIC | Video-enhanced contrast, differential interference contrast |
|---|---|
| CE | Contrast enhanced |
| CE-CT | Contrast-enhanced computed tomography |
| VATS | Video Assisted Thoracic Surgery |
| VATS | Video Assisted Thoracoscopic Surgery |
| Allen video enhanced contrast | <procedure> A method for enhancing microscopic images pioneered by R D Allen. The digitised image has the background (an out of focus image of the same microscopic field with comparable unevenness of illumination etc.) subtracted and the contrast expanded to utilise the potential contrast range. Interestingly, it is possible to produce images of objects that are below the theoretical limit of resolution microtubules for example. (18 Nov 1997) |
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| video-assisted thoracic surgery | A less morbid alternative to "open" thoracotomy that employs cameras, optic systems, percutaneous stapling devices, and assorted endoscopic graspers, retractors, and forceps. Also called video thoracoscopic surgery, it can be selectively applied to various pulmonary, pleural, and pericardial lesions. (05 Mar 2000) |
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| video games | A form of interactive entertainment in which the player controls electronically generated images that appear on a video display screen. This includes video games played in the home on special machines or home computers, and those played in arcades. (12 Dec 1998) |
| video microscopy | <technique> Microscopy that takes advantage of video as an imaging, image processing, analysing, or controlling device. (05 Aug 1998) |
| video recording | The storing or preserving of video signals for television to be played back later via a transmitter or receiver. Recordings may be made on magnetic tape or discs (videodisc recording). (12 Dec 1998) |
| video waveform | <microscopy> The display of the (composite) video signal onto a cathode-ray oscilloscope triggered by the V- or H-sync pulse. The amplitudes and waveforms, as well as precision of timing, of the signal components are made visible. (05 Aug 1998) |
| microscopy, video | Microscopy in which television cameras are used to brighten magnified images that are otherwise too dark to be seen with the naked eye. It is used frequently in telepathology. (12 Dec 1998) |
| Allen, Alfred | <person> U.S. Chemist, 1846-1904. See: Allen's test. (05 Mar 2000) |
| Allen-Doisy test | A test for oestrogenic activity; the material to be investigated is injected repeatedly into immature or spayed rats or mice; the disappearance of leukocytes from the vaginal smear and the appearance of cornified cells constitutes a positive reaction. (05 Mar 2000) |
| Allen-Doisy unit | The quantity of oestrogen capable of producing in a spayed mouse a characteristic change in the vaginal epithelium, namely, disappearance of leukocytes and appearance of cornified cells, as determined by a vaginal smear; equal approximately to one-half of an estrone unit. Synonym: mouse unit. (05 Mar 2000) |
| Allen, Edgar | <person> U.S. Endocrinologist, 1892-1943. See: Allen-Doisy test, Allen-Doisy unit. (05 Mar 2000) |
| Allen, Edgar Van Nuys | <person> U.S. Physician, 1900-1961. See: Allen's test. (05 Mar 2000) |
| Allen-Masters syndrome | <syndrome> Pelvic pain resulting from an old laceration of the broad ligament received during delivery. (05 Mar 2000) |
| Allen's test | For phenol: upon the addition of 5 or 6 drops of hydrochloric acid and then 1 of nitric acid to the suspected fluid, a red colour develops. For strychnine: fluid is extracted with ether, which is then evaporated by means of "drop-by-drop" pipetting into a warmed porcelain dish or crucible; the residue is treated with a small bit of manganese dioxide and dilute sulfuric acid; a red-blue or violet colour develops if strychnine is present. Origin: A.H. Allen A test for radial or ulnar patency; either the radial or ulnar artery is digitally compressed by the examiner after blood has been forced out of the hand by clenching it into a fist; failure of the blood to diffuse into the hand when opened indicates that the artery not compressed is occluded. Origin: Edgar Van Nuys Allen (05 Mar 2000) |
| Allen, Willard | <person> U.S. Gynecologist, *1904. See: Corner-Allen test, Corner-Allen unit, Allen-Masters syndrome. (05 Mar 2000) |
| chalcone michael allen | An organic molecule prepared by aldol condensation of acetophenone andbenzaldehyde. (09 Oct 1997) |
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