Neuroreceptor Studies Using Positron Emission Tomography

Pulmonary studies using positron emission tomography.

The detailed investigation of regional differences in lung function at a local level began when suitable gamma-ray emitting isotopes and focused external radiation detectors (especially the Anger gamma-camera) became available. A major recent advance has been the development of positron emission tomography (PET), which provides a powerful combination of highly accurate tomographic reconstructio...

Receptor using Positron Emission Tomography

The actions of marijuana (cannabis) are mediated by receptors (primarily the cannabinoid CB1 receptor) that have unusually high density and wide distribution in brain. In addition to mediating the effects of exogenous drugs like cannabis, these receptors also receive signals from endogenous cannabinoids (endocannabinoids), which modulate the release of several other neurotransmitters. Since abn...

Functional Imaging Studies of Human Cognition Using Positron Emission Tomography

Human cerebral circulation: positron emission tomography studies.

We reviewed the literature on human cerebral circulation and oxygen metabolism, as measured by positron emission tomography (PET), with respect to normal values and of regulation of cerebral circulation. A multicenter study in Japan showed that between-center variations in cerebral blood flow (CBF), cerebral blood volume (CBV), cerebral oxygen extraction fraction (OEF) and cerebral metabolic ra...

Imaging Cellular Proliferation in Prostate Cancer with Positron Emission Tomography

Prostate cancer remains a major public health problem worldwide. Imaging plays an important role in the assessment of disease at all its clinical phases, including staging, restaging after definitive therapy, evaluation of therapy response, and prognostication. Positron emission tomography with a number of biologically targeted radiotracers has been demonstrated to have potential diagnostic and...