Radiopharmaceuticals Flashcards
Is a radioactive pharmaceutical agent that is used for diagnostic or therapeutic procedure
Radiopharmaceutical
Substances that have the same number of protons but have varying numbers of neutrons
Radionuclide
Decay equation
Ae = Ao^-λt
Represents specific gravity at time t (Decay equation)
Ae
Represents initial activity (Decay equation)
Ao
Represents the decay constant calculated as In 2/ half-life
λ
Represents time (Decay equation)
t
The fundamental unit of radioactivity; defined as 3.7x10^10 nuclear transformation per second or disintegrations per second (dps)
Curie (Ci)
Radiopharmaceuticals that deliver the minimum possible radiation dose to the patient while still obtaining the required diagnostic information
Diagnostic radiopharmaceuticals
Radiopharmaceuticals that deliver the maximum radiation dose to the diseased organ or tumor while minimizing the radiation dose to nontarget tissues
Therapy radiopharmaceuticals
A metastable nuclear isomer of technetium 99, the most commonly used medical radioisotope
Technetium-99m (99m Tc)
Half-life of Technetium-99m (99m Tc)
1 day/24 hours
An isotope of yttrium; used in radiation therapy to treat cancer
Yttrium-90 (90 Y)
Half-life of Yttrium-90 (90 Y)
64.1 hours
A diagnostic radiopharmaceutical indicated for myocardial perfusion imaging for the diagnosis of coronary artery disease
Thallous-201 chloride (201 Tl)
Meaning of SPECT
Single-photon emission computed tomography
Used as a radioactive tracer to obtain images of a specific type of tissue, or disease state of tissue
Gallium-67 citrate (67 Ga)
An isotope of indium that is useful for isotopic labeling of blood cell components
Indium-111 chloride (111 In)