cat

cat,

name applied broadly to the carnivorous mammals constituting the family Felidae, and specifically to the domestic cat, Felis catus. The great roaring cats, the lionlion,
large carnivore of the cat family, Panthera leo, found in open country in Africa, with a few surviving in India. Lions have short-haired coats of tawny brown, with the tail ending in a dark tuft.
..... Click the link for more information. , tigertiger,
large carnivore of the cat family, Panthera tigris, found in the forests of Asia. There are six subspecies of P. tigris: Amur or Siberian, Sumatran, Malayan, North Indochinese, Bengal, and South China or Amoy.
..... Click the link for more information. , and leopardleopard,
large carnivore of the cat family, Panthera pardus, widely distributed in Africa and Asia. It is commonly yellow, buff, or gray, patterned with black spots and rings. The rings, unlike those of the New World jaguar, never have spots inside them.
..... Click the link for more information. are anatomically very similar to one another and constitute the genus Panthera, which also includes the jaguarjaguar
, large New World carnivore of the cat family, Panthera onca. Jaguars range from the SW United States to S central Argentina, though there have been no resident breeding females in the United States since 1963.
..... Click the link for more information. and, in some systems, the snow leopard. The clouded leopards, Neofelis, and the cheetahcheetah
, carnivore of the cat family, Acinonyx jubatus, native to Africa and SW Asia as far east as India. Formerly numerous all over their range, they are extinct now in Asia except for small numbers in Iran's Dasht-e Kavir, and are threatened in all of their range.
..... Click the link for more information. , Acinonyx, are big cats that, like the jaguar and snow leopard, do not roar. The medium-sized and small cats are classified by most zoologists in different genera, but they were previously all put in the single genus Felis, despite the great variation among them. Among these cats are the pumapuma
or cougar
, New World member of the cat family, Puma concolor. Also known as mountain lion, catamount, panther, and painter, it ranges from S British Columbia to the southern tip of South America. The puma is slenderly built, with a lionlike face.
..... Click the link for more information. (or cougar) and the jaguarundi, genus Puma, the lynxlynx,
name given to several related small, ferocious members of the cat family. All have small heads, tufted ears, and heavy bodies with long legs and short tails. All are primarily terrestrial, although they are able to climb trees.
..... Click the link for more information. (including the bobcat), Lynx, the ocelotocelot
, medium-sized cat, Leopardus pardalis, of Central and South America. It is occasionally found as far N as Texas. The ocelot has a yellow-brown coat with black spots, rings, and stripes. It is about 30 in. (76 cm) long, not including the 14-in.
..... Click the link for more information. , Leopardus, the servalserval,
medium-sized African cat, Leptailurus serval, found S of the Sahara in scrub country close to water. The serval is lightly built with very long legs; it has a small head with large eyes and ears, set on a long neck. Its coat is yellow-orange with black spots.
..... Click the link for more information. , Leptailurus, and many small species described by the name cat or wildcat, such as the several golden cats and European wildcat, as well as the domestic cat. The small cats are generally ticked, striped, or spotted. The largest member of genus Felis is the jungle cat, F. chaus, of N Africa and Asia, found as far E as Indochina. It lives in a variety of habitats, especially open woodlands and scrub. It is also known as the jungle lynx but is not a true lynx.

Anatomy and Behavior

Of all the carnivores, cats are the most exclusive flesh-eaters and are the most highly adapted for hunting and devouring their prey. All cats have rounded heads, short muzzles, large eyes, sensitive whiskers about the mouth, and erect pointed ears. They have short, wide jaws equipped with long canine teeth and strong molars with sharp cutting edges. Their tongues are coated with sharp recurved projections called papillae that aid in drinking and grooming.

Cats have five toes on the forefeet and four on the hind feet. The fifth toe is set high on the forefoot and does not touch the ground during walking, but it is used in grooming and capturing prey. The ends of the toes bear strong, sharp, curved claws. In all but the cheetah the claws are completely retractile, being withdrawn into protective sheaths when not in use. This mechanism is a distinguishing feature of the cat family, although it occurs in a less developed form in some civets.

All cats, with the exception of the lynx and related species, have long tails which they use for balance. The musculo-skeletal system is extremely flexible, allowing cats to arch and twist their bodies in a variety of ways. Most cats have good vision and are able to see well in very dim light; their color vision is weak. Their sense of hearing is excellent and, at least in the small cats, can detect frequencies of up to 40,000 Hz or higher. The sense of smell is not as highly developed as in the dogdog,
carnivorous, domesticated wolf (Canis lupus familiaris) of the family Canidae, to which the jackal and fox also belong. The family Canidae is sometimes referred to as the dog family, and its characteristics, e.g.
..... Click the link for more information. ; its keenness may vary from one species to another.

Cats are extremely agile; they can run faster than any other mammal for short distances and are remarkable jumpers. They are also good swimmers and members of many species appear to enjoy bathing. All are able to climb trees, but they vary in their behavior from almost exclusively terrestrial (e.g., the lion) to largely arboreal (e.g., the clouded leopards). Most cats stalk their victims with great stealth and silence; even the lion, which lives in open country, usually lies in concealment until it can pounce on its victim. Only the cheetah, the swiftest of all mammals, runs down its prey.

Most are more or less solitary, but cheetahs live in family groups and lions live in groups, called prides, of up to 30 individuals. Cats live in a wide variety of habitats, although they are most numerous in warm climates. Even a single species, such as the tiger, may range from cold northern regions to the tropics. All continents except Australia and Antarctica have native species.

Domestic Cats

Cats have been domesticated since prehistoric times, perhaps for 10,000 years; there is evidence (from a Neolithic grave on Cyprus) of some sort of association with humans dating back to the 8th cent. B.C. Cats have been greatly valued as destroyers of vermin, as well as for their ornamental qualities. The ancient Egyptian domestic cat, which spread to Europe in historic times, was used as a retriever in hunting as well as for catching rats and mice. It and the modern domestic cat, F. catus, are descended from Felis silvestris lybica, the Near Eastern subspecies of the wildcatwildcat,
common name of Old World cats (Felis silvestris) of Europe, Asia, and Africa. The wildcat resembles a large domestic tabby cat with a heavy tail; its fur is brownish to gray, with a pattern of light stripes. It can and does interbreed with domestic cats.
..... Click the link for more information. . The domestic cat can and does interbreed with the subspecies of wildcat found in Eurasia and Africa. Cats were venerated in the ancient Egyptian and Norse religions, and they have also been the object of superstitious fear, especially in the Middle Ages, when they were tortured and burned as witches.

Cats vary considerably in size; males commonly weigh 9 to 14 lb (4.1–6.4 kg) and females 6 to 10 lb (2.2–4.5 kg). They have coats of varying length and a wide variety of colors: black, white, and many shades of red, yellow, brown, and gray. A cat may be solid-colored or have patches or shadings of a second color. An extremely common pattern, probably derived from wild ancestors, is tabby: a red, brown, or gray background, striped with a lighter shade of the same color. The tortoiseshell pattern is a mixture of red, yellow, and black patches. The calico pattern is similar, but with large patches of white.

Recognized Breeds

Besides the common house cat, with its natural variation, the species F. catus includes recognized breeds with characteristics maintained by breeders and fanciers through selective mating. Breeds are established when particular traits breed true for several generations; the known lineage of an animal is called its pedigree. Cat fanciers' associations set standards, establish pedigrees, and conduct cat shows. There are seven such associations in the United States, one in Canada, and one in Great Britain. The short-haired breeds are in general more slender and active than the long-haired.

The long-haired breeds are the Persian and Himalayan; angora is an old term denoting any long-haired cat. Persians may be black, white, or any of a great variety of colors, including calico, tortoiseshell, tabby, and cameo (cream with red shadings). The Himalayan breed resulted from the crossing of a Siamese with a Persian cat; Himalayans have the stocky bodies and long hair of Persians, with Siamese coloring.

All other breeds are short-haired. Abyssinians have long bodies and ruddy brown coats with ticking (marking on each hair) of darker brown or black. They are thought to be the most unchanged descendants of the ancient Egyptian domestic cat. Siamese are slender cats with almond-shaped blue eyes, and white, cream, or fawn-colored coats with brown or gray areas, called points, on the feet, tail, ears, and face. Show Siamese are divided according to color of their coats and markings into seal-, chocolate-, blue-, lilac-, and red-point types. Burmese are small, muscular, roundheaded cats with medium to dark brown coats. Manx are tailless cats of various colors; their hind legs are longer than their forelegs, so that the rump is elevated. They probably arose by mutation on the Isle of Man in the Irish Sea, although tailless cats also occur in the Orient. The Russian Blue has bright green eyes and an evenly blue-gray coat, distinguished for having two layers of short, thick fur. The Rex is a recent breed resulting from mutation and is the only curly-haired cat. Its short, woolly coat may be any color. Domestic shorthair is also a recognized category in American cat shows; cats of this group differ from the common household cat only in having known parentage for at least two generations.

The Maine coon cat is a non-pedigreed strain of large domestic cats found in Maine and believed to be descended from Persians; coon cats weigh up to 25 lb (11.3 kg). Maltese does not connote a breed but is a name applied indiscriminately to gray cats. In 2006 an American biotechnology firm began selling cats that did not have the glycoprotein that causes an allergic response in humans; the animals had been selectively bred from cats that naturally lacked the allergen.

Classification

Cats are classified in the phylum ChordataChordata
, phylum of animals having a notochord, or dorsal stiffening rod, as the chief internal skeletal support at some stage of their development. Most chordates are vertebrates (animals with backbones), but the phylum also includes some small marine invertebrate animals.
..... Click the link for more information. , subphylum Vertebrata, class Mammalia, order Carnivora, family Felidae.

Bibliography

See M. Boorer, Wild Cats (1970); C. Necker, The Natural History of Cats (1970); G. N. Henderson and D. J. Coffey, ed., The International Encyclopedia of Cats (1973); R. Caras, ed., Harper's Illustrated Handbook of Cats (1985); D. Turner and P. Bateson, ed., The Domestic Cat (1988).

cat

Abbrev. for Cosmic Anisotropy Telescope.

Cat (Rabbit)

(religion, spiritualism, and occult)

The Cat is one of the 12 animals of the Chinese zodiac. It refers to one of the 12 earthly branches, which are used in Chinese astrology, together with the 10 heavenly stems. Such a branch designates one day every 12 days: the days are named according to a sexagesimal (60) cycle, made of 10 series of 12 branches.

Lucky and hedonistic, this socialite avoids problems; looking for his comfort, he is a refined gentleman. Not very ambitious, not really cut out for fierce struggles, he is, on the other hand, very clever. Suspicious, selfish, careful, easily hedging, and tactically skilled, he proves to be very adaptable: he will always land on his feet. Studious and cultured, the Cat is also a sensitive person.

—Michele Delemme

What does it mean when you dream about a cat?

Cats symbolize independence and power. They also represent the animal self. Cats are symbols of the feminine, prosperity, sexuality, and power. In dreams cats often represent some of their more common attributes or associations, such as “sleek,” “cunning,” “cat burglar.” The witch with her black cat commonly denotes evil and bad luck. “Catty” describes a person who makes mean or malicious remarks. Both positive and negative connotations surround the mystique of the cat. As with all dream symbols, the tone and setting of the dream indicate which meaning is appropriate.

cat

[kat] (naval architecture) A sturdy tackle used for bringing an anchor up to a ship's cathead. To hoist an anchor up to the cathead of a ship. (vertebrate zoology) The common name for all members of the carnivoran mammalian family Felidae, especially breeds of the domestic species, Felis domestica.

CAT

(meteorology) clear-air turbulence (medicine) computerized tomography

CAT.

On drawings, abbr. for “catalog.”

cat

A roll of straw and clay; used as filling between timbers in a wall.

cat

continually “washes” itself. [Animal Symbolism: Jobes, 296]See: Cleanliness

cat

evil being, demonic in nature. [Animal Symbolism: Mercatante, 46]See: Demon

cat

symbol of egotism because of its aloofness and independence. [Animal Symbolism: Mercatante, 49]See: Egotism

cat

¹1. a small domesticated feline mammal, Felis catus (or domesticus), having thick soft fur and occurring in many breeds in which the colour of the fur varies greatly: kept as a pet or to catch rats and mice 2. any of the larger felines, such as a lion or tiger 3. any wild feline mammal of the genus Felis, such as the lynx or serval, resembling the domestic cat 4. Nautical a heavy tackle for hoisting an anchor to the cathead 5. a short sharp-ended piece of wood used in the game of tipcat

cat

²1. a. short for catalytic converterb. (as modifier): a cat car 2. short for catalytic

CAT

(1)Common Abstract Tree Language. R. Voeller & Uwe Schmidt, UKiel, Germany 1983. Universal intermediate language, used byNorsk Data in their family of compilers. "A Multi-LanguageCompiler System with Automatically Generated Codegenerators,U. Schmidt et al, SIGPLAN Notices 19(6):202-2121 (June 1984).

cat

(tool)(From "catenate") Unix's command which copies one ormore entire files to the screen or some other output sinkwithout pause.

See also dd, BLT.

Among Unix fans, cat is considered an excellent example ofuser-interface design, because it delivers the file contentswithout such verbosity as spacing or headers between the files(the pr command can be used to do this), and because it doesnot require the files to consist of lines of text, but workswith any sort of data.

Among Unix haters, cat is considered the canonical exampleof *bad* user-interface design, because of its woefullyunobvious name. It is far more often used to blast a fileto standard output than to concatenate files. The name "cat"for the former operation is just as unintuitive as, say,LISP's cdr.

Of such oppositions are holy wars made.

cat

(1) (CATegory X) See cable categories.

(2) (conCATenate) See concatenating text files.

(3) A Unix command that displays the contents of a text file. It is equivalent to the type command in Windows and DOS. See Unix commands.

Cat

(dreams)Cats have both positive and negative connotations. You need to consider all of the details in the dream in order to obtain accurate interpretation. The cat can be a symbol of sexuality, femininity, prosperity, and power. A cat is also an independent animal, and in your dream you may be associating yourself or someone else with these characteristics. Usually the dream is telling you about yourself and not others. Historically black cats have been symbols of evil and bad luck. If you are a cat lover and have one as a pet, the symbolism may not apply to your dream. Old, superstitionbased dream interpretations say that a cat is a bad omen and that you can expect deceit from those who you trust.

CAT

tomography

[to-mog´rah-fe] any method that produces images of single tissue planes. In conventional radiology, tomographic images (body section radiographs) are produced by motion of the x-ray tube and film or by motion of the patient that blurs the image except in a single plane. In reconstruction tomography (CT and PET) the image is produced by a computer program.computed tomography (CT) (computerized axial tomography (CAT)) a radiologic imaging modality that uses computer processing to generate an image (scan" >CAT scan) of the tissue density in a “slice” as thin as 1 to 10 mm in thickness through the patient's body. These images are spaced at intervals of 0.5 to 1 cm. Cross-sectional anatomy can be reconstructed in several planes without exposing the patient to additional radiation.

Since its introduction in 1972, the use of this modality has grown rapidly. Because it is noninvasive and has high contrast resolution, it has replaced some radiographic procedures using contrast media. It also has a better spatial resolution than scintillation imaging (about 1 mm for CAT compared to 15 mm for a scintillation camera).
A CAT scan is divided into a square matrix of pixels (picture elements). The newer CAT scanners use a high resolution matrix with 256 × 256 or 512 × 512 pixels. The region of the tissue slice corresponding to a pixel has a cross-sectional area of 1 × 1 mm to 2 × 2 mm; because of the thickness of the slice, it has a finite height and is therefore referred to as a voxel (volume element).
The actual measurements made by the scanner are the x-ray attenuations along thousands of rays traversing the slice at all angles. The attenuation value for a ray is the sum of the values for all of the voxels it passes through. A computer program called a reconstruction algorithm can solve the problem of assigning attenuation values for all the pixels that add up to the measured values along each ray.
The attenuation values are converted to CAT numbers by subtracting the attenuation value of water and multiplying by an arbitrary coefficient to produce values ranging from −1000 for air to +1000 for compact bone with water as 0. CT numbers are sometimes expressed in Hounsfield units, named after Godfrey Hounsfield, the inventor of the CT scanner; Hounsfield and Allan Cormack were co-winners of the Nobel Prize in physiology or medicine in 1979 for the development of computerized axial tomography.

Computed tomography. Relative position of the x-ray tube, patient, and detectors in a fourth generation CT unit.electron beam computed tomography (EBCT) ultrafast tomography" >computed tomography done with a scanner in which the patient is surrounded by a large circular anode that emits x-rays as the electron beam is guided around it.extended narrow tomography tomography involving an increase in amplitude and increase in exposure angle resulting in greater thinness of the cut for examination.linear tomography tomography in which the tube and film move in the same direction.narrow angle tomography a type of tomography that results in thicker sections for examination.pluridirectional tomography tomography in which there is a great deal of movement in a variety of directions.positron emission tomography (PET) a combination of tomography" >computed tomography and scanning" >scintillation scanning. Natural biochemical substances or drugs tagged with a positron-emitting radioisotope are administered to the subject by injection; the tagged substance (tracer) then becomes localized in specific tissues like its natural analogue. When the isotope decays, it emits a positron, which then annihilates with an electron of a nearby atom, producing two 511 keV gamma rays traveling in opposite directions 180 degrees apart. When the gamma rays trigger a ring of detectors around the subject, the line between the detectors on which the decay occurred is stored in the computer. A computer program (reconstruction algorithm), like those used in computed tomography, produces an image of the distribution of the tracer in the plane of the detector ring.

Most of the isotopes used in PET scanning have a half-life of only 2 to 10 minutes. Therefore, they must be produced by an on-site cyclotron and attached chemically to the tracer and used within minutes. Because of the expense of the scanner and cyclotron, PET is used only in research centers. However, PET is important because it provides information that cannot be obtained by other means. By labeling the blood with ¹¹C-carbon monoxide, which binds to hemoglobin, images can be obtained showing the regional perfusion of an organ in multiple planes. By using labeled metabolites, images can be obtained showing metabolic activity of an organ. ¹⁵O-oxygen and ¹¹C-glucose have been used for brain imaging and ¹¹C-palmitate for heart imaging. ⁸¹Rb, which is distributed like potassium, is also used for heart imaging. By using labeled neurotransmitters, hormones, and drugs the distribution of receptors for these substances in the brain and other organs can be mapped.single-photon emission computed tomography (SPECT) a type of tomography in which gamma photon–emitting radionuclides are administered to patients and then detected by one or more gamma cameras rotated around the patient. From the series of two-dimensional images produced, a three-dimensional image can be created by computer reconstruction. The technique improves resolution of, and decreases interference by, overlapping organs. It is used particularly for assessment of cardiac disease, stroke, and liver disease; for staging of cancer; and to diagnose physical abnormalities through evaluation of function.ultrasonic tomography the ultrasonographic visualization of a cross-section of a predetermined plane of the body; see ultrasonography" >B-mode ultrasonography.

CAT

Abbreviation for chloramphenicol acetyl transferase; obsolete abbreviation for computerized axial tomography (CT).

CAT

abbr.1. clear-air turbulence2. computerized axial tomography

cat

(kăt)n.a. A small domesticated carnivorous mammal (Felis catus), kept as a pet and as catcher of vermin, and existing in a variety of breeds.b. Any of various other carnivorous mammals of the family Felidae, including the lion, tiger, leopard, and lynx.c. The fur of a domestic cat.

CAT

A gene on chromosome 11p13 that encodes catalase, an enzyme which plays a central role in the body’s defence against oxidative stress, converting the reactive oxygen species hydrogen peroxide (H2O2) to water and oxygen, thereby mitigating H2O2’s toxic effects.
Molecular pathology
Defects in CAT cause acatalasemia. Oxidative stress may play a role in the development of chronic or late-onset diseases—e.g., diabetes, asthma, Alzheimer's disease, systemic lupus erythematosus, rheumatoid arthritis and cancer.

CAT

1. Catalase.2. Catalyst.3. Catecholamine.4. Chloramphenicol acetyl transferase, a 'reporter' gene.5. Choline acetyl transferase.6. Cholesterol acyl transferase.7. Computerized axial tomography, see there.

cat

Felis catus A mammal of medical interest that is a model for some human diseases, eg, dermatosparasix, and a vector for bacteria, fungi, and parasites

Cats, impact on medicine

Model systems

-human diseases, eg dermatosparasix, a defect in converting type I procollagen to collagen; mannosidosis–affects shorthair cats; Niemann-Pick disease, type I–affects Siamese cats

Vectors for disease

Bacteria Bartonella (Rochalimaea) henselae, Bergeyella (Weeksella) zoohelcum, Brucella suis—anthrax, Campylobacter jejuni, Capnocytophaga canimorsus, CDC group NO-1, Chlamydia psittaci–feline strain, Dipylidium caninum, Francisella tularensis, Neisseria canis, Pasteurella multocida, Q-fever, Rickettsia felis, salmonellosis, Yersinia pestis–plague, Yersinia pseudotuberculosis
Fungi, eg Microsporum canis–dermatophytosis, Sporothrix schenckii
Parasites, eg Ancylostoma braziliense, A caninum, Brugia pahangi*, Clonorchis sinensis, Cryptosporidium, cutaneous larva migrans, Dipylidium caninum, Dracunculiasis medinensis*, Echinococcus vogeli, E multilocularis, Gnathostoma spinigerum, Isospora belli, Leptospira spp–leptospirosis, Opistorchis felineus, Sarcoptes scabiei–scabies, Toxoplasma gondii, Trypanosoma cruzi*, Trichinosis, visceral larva migrans, Wuchereria bancrofti. See Cat scratch disease
Viruses Cowpox, poxvirus, rabies medicine.bu.edu/dshapiro/zoocat.htm

Allergies

Some individuals are highly allergic to cats, which is attributed to the Fel dl antigen, see there

*Parasites that have part of their life cycle in humans

CAT

Abbreviation for chloramphenicol acetyl transferase;[obsolete] computed axial tomography.

tomography

(to-mog'ra-fe) [ tomo- + -graphy] A radiographic technique that selects a level in the body and blurs out structures above and below that plane, leaving a clear image of the selected anatomy. This is accomplished by moving the x-ray tube in the opposite direction from the imaging device around a stationary fulcrum defining the plane of interest. Tube movements can be linear, curvilinear, circular, elliptical, figure eight, hypocycloidal, or trispiral. With the exception of renal tomography most tomographic procedures have been replaced by computed tomography (CT). Synonym: body section radiography; body section roentgenography

computed axial tomography

Abbreviation: CAT
See: computed tomography

computed tomography

Abbreviation: CT
A computerized x-ray scanning system that produces a sectional anatomic image. It is achieved by digital processing of x-ray attenuation coefficients from a 360° wedge scan of ionizing radiation. There is considerable use of data from the attenuation coefficients in diagnosis. Computed tomography is colloquially called a cat scan.

CAUTION!

CT scans expose patients to radiation on the order of 10 mSv per scan. Educational materials about the potential risks and benefits of scanning should be provided to patients to ensure that scans are performed safely and carefully.

computerized axial tomography

Abbreviation: CAT
See: computed tomography

electrical impedance tomography

Cross-sectional body imaging that reconstructs pictures of internal organs based on measurements of their electrical activity as detected by electrodes placed on the surface of the body.

electron-beam tomography

Ultrafast computed tomography

full body computed tomography

Abbreviation: FBCT
An examination from head to toe of the body with computed tomographic imaging, promoted as a screening test for cancer and other illnesses.

CAUTION!

The test exposes patients to high levels of radiation, reveals more false positive findings than true positives, and is expensive.

Heidelberg retinal tomography

Abbreviation: HRT
A confocal laser scanning system that produces three-dimensional images of the posterior segment of the eye. It is used to diagnose and treat glaucoma.

helical computed tomography

Computed tomographic (CT) images that are obtained as the CT table moves continuously during a single, held breath. Detailed evaluation of dynamic internal features is feasible with this technique. Synonym: spiral computed tomography

optical coherence tomography

Abbreviation: OCT
A radiographical method used to obtain high-resolution cross-sectional images of tissues and their defects, e.g., of the structures of the eye.

panoramic tomography

Zonography.

POSITRON EMISSION TOMOGRAPHY: PET SCAN revealing lung cancer

PET SCAN OF BRAIN

positron emission tomography

Abbreviation: PET
Reconstruction of brain sections by using positron-emitting radionuclides. By using several different radionuclides, researchers can measure regional cerebral blood flow, blood volume, oxygen uptake, and glucose transport and metabolism, and can locate neurotransmitter receptors. PET has been used with fludeoxyglucose F 18 to identify and localize regional lymph node metastases and to help assess response to therapy.

The images produced by PET are in colors that indicate the degree of metabolism or blood flow. The highest rates appear red, those lower appear yellow, then green, and the lowest rates appear blue. The images in various disease states may then be compared to those of normal subjects. Three- and four-dimensional reconstructions are often achieved through the use of computed tomography (CT) with the same machine. See: illustration

illustration

quantitative computed tomography

Abbreviation: QCT
A method for determining the bone mineral density of a three-dimensional bony specimen, e.g., in the vertebral bodies or the forearms. It is used in the diagnosis of osteopenia and osteoporosis.

single photon emission computed tomography

Abbreviation: SPET, SPECT
A medical imaging method for reconstructing sectional images of radiotracer distributions. See: nuclear medicine scanning test; positron emission tomography

spiral computed tomography

Helical computed tomography.

ultrafast computed tomography

Computed tomographic scanning that produces images by rotating the x-ray beam at targets placed around a patient, instead of moving a patient on a gantry through the scanner. The technique minimizes patient movement artifacts and decreases scanning times to about 50 to 100 msec. It is capable of providing good resolution of vascular structures, such as the aorta and the coronary arteries. Synonym: electron-beam tomography

xenon-enhanced computed tomography

Computed tomographic scanning that uses the inert gas xenon to improve the visual distinction between healthy and abnormal tissues, esp. to visualize blood flow to different regions of the brain in stroke.

CAT

Abbrev. for computerized axial tomography (CT SCANNING).

CT or CAT

Computed tomography, a radiologic imaging that uses computer processing to generate an image of tissue density in slices through the patient's body.Mentioned in: Histiocytosis X

Patient discussion about CAT

Q. Any one used or know anything about cats claw? What you think about this site ? http://cats-claw.blogspot.com/A. There's some info here:
http://www.cncahealth.com/health-notes.htm?org=cnca&ContentID=2064008
To your health...

Q. Can it be that I stopped being allergic to cats? is it a miracle? I was allergic to cats in my childhood, and yesterday a friend cat jumped on me and nothing happened. A. NO,IF NOTHING HAPPENED

Q. i LOVE cats! but whenever I get near them I start sneezing like crazy Is there something I can take that will prevent this allergic reaction? cause I'm just dying to get a fluffy little kitty... A. i know a guy who's going through an anti-allergy treatment (for the last year and a half). he is going every month or so and get a shot. i think this is the treatment:
http://www.mayoclinic.com/print/allergy-shots/AA00017/METHOD=print

More discussions about CAT

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Breeds of cat

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Anatomy and Behavior

Domestic Cats

Recognized Breeds

Classification

Bibliography

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Cat (Rabbit)

What does it mean when you dream about a cat?

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CAT

CAT.

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tomography

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Cats, impact on medicine

CAT

tomography

computed axial tomography

computed tomography

CAUTION!

computerized axial tomography

electrical impedance tomography

electron-beam tomography

full body computed tomography

CAUTION!

Heidelberg retinal tomography

helical computed tomography

optical coherence tomography

panoramic tomography

positron emission tomography

quantitative computed tomography

single photon emission computed tomography

spiral computed tomography

ultrafast computed tomography

xenon-enhanced computed tomography

CAT

CT or CAT

Patient discussion about CAT

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cat

Synonyms for cat

noun feline

Synonyms

Synonyms for cat

noun feline mammal usually having thick soft fur and no ability to roar: domestic cats