Ch 16 Intrumentation

tomography in nuclear medicine

images being obtained with two dimensional projections of three dimensional sources

what is the basic problem with conventional radionuclide imaging?

taking projection images from the posterior, laterals, and oblique views

how can we overcome structured being superimposed images of overlaying and/or underlying structures

tomographic imaging

what is an alternative to standard planar imaging?

tomographic images

2-D representations of structures lying within a selected plane in a 3-D object

mathematical algorithms

_________ _____ are then used to reconstruct images of selected planes within the object from the projection data

emission computed tomography

ECT

emission computed tomography

the process of reconstructing images of selected planes within the object from the acquired projection data

emission computed tomography

Through THIS process we can produce images where the activity from overlying (or adjacent) cross-sectional planes is eliminated from the image

increase

through emission computed tomography this process can drastically ____ the contrast-to-noise ratio

transmission computed tomography

Reconstruction of images from transmitted emissions from an external source like an X-ray tube, is known as

true

true or false: SPECT and PET create a significant improvement to the contrast-to-noise ratio

the ability to quantify the exact location and depth of the activity within the body

how dose SPECT and PET improve contrast-to-noise ratio?

quantify

SPECT and PET both have the ability to ____ the exact location and depth of the activity within the body

Johann Radon 1917

The mathematical algorithms underlying reconstruction tomography was originally first published by who and when?

radio-astronomy and chemistry allow for practical application of tomography when?