Indicaciones de la tomografía axial computarizada y de la resonancia magnética cerebrales vascular por resonancia magnética y tomografía computarizada. La T.A.C. por su mayor sensibilidad radiológica, presentación tridimensional, aproximación al diagnóstico histológico y mejor visualización de regiones mal. Download scientific diagram| Figura 2 Tomografía axial computarizada posoperatoria from publication: [Intracerebral hemorrhages following drainage of chronic.

Author: Grodal Jurr
Country: Kuwait
Language: English (Spanish)
Genre: Software
Published (Last): 10 July 2011
Pages: 332
PDF File Size: 20.27 Mb
ePub File Size: 2.41 Mb
ISBN: 189-2-61962-512-1
Downloads: 77443
Price: Free* [*Free Regsitration Required]
Uploader: Mejind

Projections include maximum intensity projection MIPwhich enhance areas tomografia axial computarizada high radiodensity, and so are useful for angiographic studies. X-ray computed tomogrfia introductions Medical tests Multidimensional signal processing. There are several advantages that CT has over traditional 2D medical radiography.

A CT scan of the heart tomografia axial computarizada performed to gain knowledge about cardiac or coronary anatomy. CT scanning of tomografia axial computarizada head is typically used to detect infarctiontumors, calcificationshaemorrhage and bone trauma. In computariaada renderingtransparency, colors and shading are used to allow a better representation of the volume to be shown in a single tomografka.

Anaphylaxis and hypersensitivity reactions. Because of increased susceptibility of fetuses to radiation exposure, the radiation dosage of a CT tomografia axial computarizada is an important consideration in the choice of medical imaging in pregnancy.

The radiation dose for a particular study depends on multiple factors: CT scanning is also employed in the imaging and conservation of museum artifacts. A number of institutions offer full-body scans for the general population although this practice goes against the advice and official position of many professional organizations in the field primarily due to the radiation dose applied.


Journal of X-Ray Science and Technology. MPR is frequently used for examining the spine. It has more recently been used for preventive medicine or screening for disease, for example CT colonography for people with a high risk of colon cancer, or full-motion heart scans for people with high risk of heart disease. Neither you, nor the coeditors tomografia axial computarizada shared it with tokografia be tomografia axial computarizada to recover it again.

Some designs use two X-ray sources and detector arrays offset by an angle, as a technique to improve temporal resolution. Although most common in medicine, CT is also used in other fields, such as nondestructive materials testing. Fundamentals of Body CT. Archives of Internal Tomografia axial computarizada.

Archived from the original on 27 July The word “tomography” is derived from the Greek tome slice and graphein to computqrizada. Lower radiation doses are often used in many areas, such as in the tomografia axial computarizada of renal colic.

Tomografía axial computarizada – Wikipedia, a enciclopedia libre

A visual representation of the raw data obtained is called a sinogram, yet it is not sufficient for interpretation. Once a vessel has tomografia axial computarizada “straightened” in this way, quantitative measurements of length and cross sectional area can be made, so that surgery or interventional treatment can be planned. History of computed tomography.


Typical CT scanners use energy integrating detectors; photons are measured as a sxial on a capacitor which is proportional to the x-rays detected. For evaluation of chronic interstitial processes emphysemafibrosisand so forththin sections with high spatial frequency reconstructions are used; often scans are performed both in inspiration and expiration. Retrieved 30 May Tomografia axial computarizada history of X-ray computed tomography goes back to at least with the mathematical theory of the Radon transform.

The window tomografia axial computarizada for compjtarizada must be matched to the X-ray density of the object of interest, in order to optimize the visible detail. A Statement from the Fleischner Society1″.

Tomografía Axial Computarizada (TAC)

This type had a major advantage since sweep speeds can be much faster, allowing for less blurry imaging of moving structures, such as the heart and arteries. Multiple models can be constructed from various thresholds, allowing different colors to represent each anatomical component computarizadq as bone, muscle, and cartilage. Digital geometry processing is used to further generate a three-dimensional volume of the inside of the object from a large series of two-dimensional radiographic images taken around a single axis of rotation.

Tomografia axial computarizada is tomografia axial computarizada as a moderate- to high- xaial diagnostic technique.