positron-emitting tracer imaging system.
Hongguang Liu, a postdoctoral fellow in the Cancer Molecular Imaging Chemistry Laboratory (CMICL), was awarded the MICoE Young Investigator Award (1st Place) for the paper presentation at the Annual Meeting of the Society of Nuclear Medicine (SNM 2010)in Salt Lake City, UT for his talk on "Noninvasive molecular imaging of radioactive tracers using optical imaging techniques".
Tumour perfusion was assessed using a radioactive tracer (15O-water) and PET imaging.
In addition, for whatever reason, my mom always wanted to do both tests on the same day -- which meant fasting all evening, waking up, drinking orange contrast liquid for the CAT scan, driving to hospital and receiving the radioactive tracer, driving to the imaging center and getting the CAT scan, then driving back to hospital for the bone scan.
In this initial study, patients received infusions of approximately 25 mCi of 99mTc-HMPAO, a radioactive tracer that facilitated the imaging of rCBF.
(Last year, researchers in London used PET imaging with another radioactive tracer to show that microglial cells are hyperactive in the brains of patients with schizophrenia).
The following year, Alex et al. [ 25] described a peritumoral intradermal injection of radioactive tracer (99mTc sulphur colloid), followed by imaging and intraoperative gamma probe radiolocalization of SLNs.
Fluorescence diffuse optical tomography (DOT) is an emerging deep tissue (>3 mm) imaging technique that has great potential as an alternative to radioactive tracer analysis for noninvasive detection and imaging of the sentinel lymph node.
23 The following year, Alex et al. described a peritumoral intradermal injection of radioactive tracer (m technetium sulfur colloid), followed by imaging and intraoperative gamma probe radiolocalization of SLNs. 25 The sentinel node concept has since been extensively studied and validated for patients with cutaneous melanoma and breast cancer.
Certainly, the need for short-lived radioactive tracers for PET imaging carries a considerable financial burden, as well as requiring infrastructure (e.g., cyclotron, radiation shielding) and distribution logistics.
The best method for imaging biochemical events in humans is through PET imaging, in which a radioactive tracer injected into the body makes it possible to detect chemical activity.
