Prelim Intro Flashcards
Injection of the radiopharmaceutical
()
radionuclide and pharmaceutical
carries the radionuclide to the
organ being examined.
Pharmaceutical
Radionuclide in the target organ emits ___
gamma
rays
detects the gamma rays to
create a digital image.
Gamma camera
Three classifications of nuclear
medicine
Imaging procedures - referred to as scanning
scintigraphy
Radionuclide therapy
Radioimmunoassay (RIA)
is the nuclear medicine
laboratory technique for measuring trace amount of
substances in the blood. (substances being measured
with RIA are the least 1000 times less)
Radioimmunoassay (RIA)-
Major subdivisions of nuclear
medicine: IDIN
In “vivo
Diagnostic Procedure
Imaging studies
Non-imaging studies
- for brain, liver, lung, bone, kidney, heart, thyroid, and other organs for detection of a tumor. Whole body imaging for the detection of
metastases.
Imaging studies
- are thyroid uptake to determine thyroid function,
renography for the investigation renal function, and blood volume measurement.
Non-imaging studies
-
treatment of Hyperthyroidism with I-131
Therapeutic Procedure
measurement of hormones,
enzymes, and other
substances.
Radioimmunoassay (RIA)
Two Classes of Nuclear Medicine Imaging
Single Photon Imaging
Positron Imaging
- includes Single Photon emission Computed
tomography (SPECT) - Uses radionuclides that decay by gamma emission
Single Photon Imaging
- Includes Positron Emission Tomography (PET)
- Uses radionuclide that decay by positron emission
Positron Imaging
2 General Components of
radiopharmaceutical
Radionuclide
• Pharmaceutical
Are administered to a human subjects usually
by intravenous injection.
Contain “radionuclide” as an integral part of
the main ingredient.
Are medicinal products designed for the use in the
investigation or treatment of human diseases
Radiopharmaceuticals
The atoms involved and the only nuclei
that undergo radioactive decay
▪ Emits gamma ray as it decays
▪ This is tagged to a radiopharmaceutical
Radionuclide
Any chemical substances intended for use in medical
diagnosis, cure treatment or prevention of disease.
▪ Carries the radionuclide to the organ being
examined.
▪ This is chosen in the basis of its preferential
localization or participation in the physiological
function of a given organ.
▪ Produces gamma-ray emission from within the
organ is being studied.
Pharmaceuticals/Tracer
