CAT scan

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Related to CAT scan: CT scan, MRI scan


1. to examine or map the body, or one or more organs or regions of it, by gathering information with a sensing device, such as a moving detector or a sweeping beam of radiation.
2. the data or image so obtained, often designated according to the organ under examination, such as a brain scan, kidney scan, or thyroid scan.
3. shortened form of scintiscan.
A-scan display on a cathode ray tube of ultrasonic echoes, in which one axis represents the time required for return of the echo and the other corresponds to the strength of the echo.
B-scan display on a cathode ray tube of ultrasonic echoes, in which the position of a bright dot on the tube corresponds to the time elapsed and the brightness of the spot to the strength of the echo; movement of the transducer across the skin surface yields a two-dimensional cross-sectional display.
CAT scan (CT scan) the image generated by computerized axial tomography.
HIDA scan a type of scan using a technetium 99m complex to assess hepatobiliary function.
thallium scan a scintiscan involving use of thallium 201; see also thallium scan.
ventilation-perfusion scan (V/Q scan) a scintigraphic technique for demonstrating perfusion defects in normally ventilated areas of the lung in the diagnosis of pulmonary embolism, consisting of the imaging of the distribution of an inhaled radionuclide followed by the imaging of the perfusion of the lungs by an injected radionuclide.

CAT scan

A CT scan.

CAT scan

Computer tomography, see there . ;.

CAT scan

computed axial tomography scan, a colloquial term for CT scan.
See: computed tomography
See also: scan

Patient discussion about CAT scan

Q. I get bad headaches had ct scans and m.r.i. even sinus surgery, suffering 2yrs now, dizzness occurs too..

A. If all prior medical investigations turned out normal, and sinus surgery didn't help relieve your symptoms, I would suggest the reason for your headaches is probably migraine attacks, that can cause severe headaches, and no CT scan or MRI can diagnose them. The diagnosis is made clinically, by your doctor. Migraine headaches can be eased by proper medications, before and during an attack. You should consult a neurologist.

More discussions about CAT scan
References in periodicals archive ?
But there are not that many primate CAT scans about.
In these instances, the obvious benefits of getting information from a CAT scan clearly outweigh any risks to the patients.
The plan also calls for adding a second cardiac catheterization laboratory along with a recovery area and patient holding room, and relocating MRI and CAT scan equipment from a satellite building into the hospital, Mirzabegian said.
More tests for McCloskey: Junior center Mike McCloskey is still being bothered by pain in his chest and will undergo a CAT scan.
Subjecting a patient to less than 9 percent of the radiation of a full set of X-rays, at one-third the cost of a CAT scan, the NewTom has the potential to take the dental and oral surgery world by storm in just a few years.
Richard is probably the only owner I've ever known that made us drivers get a CAT scan,'' Hornaday said.
Such exposures are comparable to those of a head-and-body CAT scan.
Despite lingering grogginess and nausea, Murray received encouraging news Tuesday when a CAT scan determined that blood has not leaked from his brain, a condition doctors said would require surgery to repair.
LAUSD board member David Tokofsky summed it up nicely when he remarked that Romer ``wants to do an X-ray, and the IRS tells us we're going in for a full CAT scan.
In the geophysical equivalent of a CAT scan, scientists have identified key parts of the molten-rock plumbing system underneath a mid-ocean ridge -- offering new insight into the process that forms two-thirds of the planet's surface.
Add injuries: Free safety John Walker of Birmingham High in Encino suffered a concussion and is supposed to have a CAT scan today.
A CAT scan Monday revealed Kariya has a cracked bone in his right foot.