Chap 1 Book Nucmed Questions and Answers
The science and clinical practice of nuclear medicine involve the administration of trace amounts of compounds labeled with radioactivity (_____) that are used to provide ____ information in a wide range of disease states.
radionuclides, diagnostic
...
Chap 1 Book Nucmed Questions and
Answers
The science and clinical practice of nuclear medicine involve the administration of trace
amounts of compounds labeled with radioactivity (_____) that are used to provide ____
information in a wide range of disease states. - answer radionuclides, diagnostic
In its most basic form, a nuclear medicine study involves injecting a compound, which is
labeled with a _____-emitting or positron-emitting radionuclide, into the body. The
radiolabeled compound is called a _____, or more commonly, a tracer or ____ - answer
gamma-ray, radiopharmaceutical, radiotracer
.When the radionuclide decays, _____ or high-energy photons are emitted - answer
gamma rays
An external, ____-sensitive gamma-ray "camera" can detect the _____ or photons and
form an image of the distribution of the radionuclide - answer position, gamma rays
There are two broad classes of nuclear medicine imaging: _____ [which includes single
photon emission computed tomography (SPECT)] and ______ [positron emission
tomography (PET)] - answer single photon imaging, positron imaging
Single photon imaging uses radionuclides that decay by _____ emission. A ____ image
is obtained by taking a picture of the radionuclide distribution in the patient from ____
particular angle. This results in an image with little depth information, but which can still
be diagnostically useful - answer gamma-ray, planar, one
For the tomographic mode of single photon imaging (SPECT), data are collected from
____ angles around the patient. This allows ____ images of the distribution of the
radionuclide to be reconstructed, thus providing the depth information missing from
planar imaging. - answer many, cross-sectional
Positron imaging makes use of radionuclides that decay by ____ emission. it has a very
short lifetime and, following annihilation with an ___, simultaneously produces two ____
photons that subsequently are detected by an imaging camera. - answer positron,
electron, high-energy
, tomographic images are formed by collecting data from many angles around the
patient, resulting in ____ images - answer PET
The power of nuclear medicine lies in its ability to provide exquisitely ___ measures of a
wide range of____ processes in the body. - answer sensitive , biologic
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