Categorias: Todos - skeletal - brain - imaging

por Macey langston 2 anos atrás

109

PET Radiopharmaceuticals

Various PET radiopharmaceuticals are used for different medical imaging purposes. F-18 FDG is commonly employed to assess abnormal glucose metabolism, particularly in brain imaging related to epileptic seizures, oncology for suspected cancer, and cardiac viability for conditions like coronary artery disease and left ventricular dysfunction.

PET Radiopharmaceuticals

PET Radiopharmaceuticals

Ga-68 Dotatate

Localization of somatostatinreceptor positive neuroendocrine tumors (NeTs)
Somatostatin receptor.
68 Min.

N-13 Ammonia

Myocardium rest and stress imaging and evaluate for CAD.
Analog of ammonia. Distributed to all organs. Diffusion across capillary membrane, then metabolic conversion.
9.96 Min.

Rb-82 Chloride

Myocardium rest and stress imaging and to evaluate for CAD.
Analogous to Potassium (K+). Ion exchange.
Half-Life:
76 Sec.

F-18 Fluciclovine(Axumin)

Imaging in men for prostate cancer (based on PSA levels).
Amino acid transport across mammalian cell membranes.Taken up by prostate cancer cells.Active transport.

F-18 Sodium Fluoride

Skeletal imaging- Define areas of altered osteogenic activity.
Accumulates in skeleton in an even fashion. Ion exchange.
Half Life:

F-18 Florbetapir(Amyvid)

Alzheimer’s & cognitive decline disorders. Estimate B-amyloid neurotic plaque.
Binds to B-amyloid plaques in the brain. Passive diffusion.

F-18 Florbetaben(Neuraceq)

Estimating B-amyloid plaque density in patients with cognitive decline. (Alzheimer’s).
Binds to B-amyloid plaques in the brain. Crosses the BBB. Passive diffusion.

F-18 FDG

Uses:
Abnormal glucose metabolism

Cardiac viability- CAD and L. ventricular dysfucntion.

Brain imaging- associated with foci of epileptic seizures.

Oncology- Assessment of with suspected cancer.

MOL:
Glucose analog. Metabolism. Passive diffusion
Half life:
110 Min.