Standard Guide for Computed Tomography (CT)

Importancia y uso:

5.1 Computed tomography (CT) is a radiographic reconstruction method that provides a sensitive technique whenever the primary goal is to locate and size planar and volumetric detail in three dimensions.

5.2 CT provides quantitative volume images as a function of density and element number (attenuation coefficient) by means of computer-processed combinations of many X-ray measurements taken from different angles to produce cross-sectional images of specific areas of a scanned object, allowing the user to see inside the object without cutting. CT is considered much easier to interpret than conventional radiographic data due to the elimination of overlapping structures. The new user can learn quickly to read CT data because the images correspond more closely to the way the human mind visualizes three-dimensional structures than conventional projection radiography. Further, because CT slices and volumes are digital, they may be enhanced, analyzed, compressed, archived, input as data into performance calculations, compared with digital data from other NDE modalities, or transmitted to other locations for remote viewing.

Subcomité:

E07.01

Referida por:

E1695-20E01, E1672-12R20, E3375-23, F2902-16E01, D8093-19, F3160-21, E1570-19, E2767-24E01, E1817-08R22, E1814-14R22, E1935-97R19, E0543-21, E1931-16R22, E3327_E3327M-21, E2533-21, E3166-20E01, F2450-18, E0543-21

Volúmen:

03.03

Número ICS:

35.240.80 (IT applications in health care technology)

Palabras clave:

CDD; computed tomography; contrast-detail-diagram; CT; detectability; imaging; modulation transfer function; MTF; nondestructive evaluation (NDE); point spread function (PSF); reconstruction; scan; slice;