83 yr M, with h/o Prostate CA (on hormonal Rx w/ undetectable PSA) PMH significant for CLL on BM Bx 9 yrs back (no current treatment). Now presents w/ fatigue, unexplained wt. loss & anorexia. CT: extensive abd. LAD. FDG PET/CT scan is shown. Most likely...
49 yr old male with atypical angina; underwent Tc-99m Tetrofosmin SPECT stress study. The images indicate: A. Attenuation Artifact B. Scatter Artifact C. Normalization Artifact D. Reverse Redistribution Pattern
What is Nuclear Medicine & Molecular Imaging?
Molecular imaging is a type of medical imaging that provides detailed pictures of what is happening inside the body at the molecular and cellular level.
About Nuclear Medicine & Molecular Imaging:
Nuclear Medicine is branch of medicine that uses the radioactivity for diagnosis and therapy. It started in the mid-1920s when German scientists experimented with radionuclides on rats.
Diagnostic Nuclear Medicine (Radionuclide Imaging, Nuclear Scintigraphy):
Tracers (pharmaceuticals labeled with radiation emitting isotopes or radionuclides) are administered to patients (either intravenous, orally, inhalation, subcutaneously/subdermally) and the radiation emitted is detected by scintillation cameras (gamma cameras or PET cameras) and images are produced from this, depicting the distribution of the tracer within the body.
Therapeutic Nuclear Medicine:
Radiopharmaceuticals are administered (usually intravenously) to treat disease with curative or palliative intent. They act by killing abnormal cells within the body by high but localized radiation exposure (akin to targeted internal radiation).
PET/CT, a hybrid imaging technique, combines functional/physiologic imaging with the more traditional anatomic/structural imaging. By providing the best of both worlds, it has played a pivotal role in ushering in the new era of Molecular Imaging, to go hand in hand with Molecular Medicine in the 21st century.
The Indo-American Society of Nuclear Medicine (IASNM) was conceived in 1979 and incorporated as a non-profit tax-exempt organization in the State of Texas in 1984. The membership of the Society primarily consists of physicians, scientists and technologists in nuclear medicine, although interested professionals in other disciplines also can be members of the Society. The major objective of this Society is to advance the profession of nuclear medicine through exchange of ideas and knowledge among its members, and also to help promote the state-of-the-art nuclear medicine in the developing countries, namely, India.