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Topic: Positron emission

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Neutron emission

Beta emission

Beta decay

Proton emission

Electron capture

Internal conversion

Alpha decay

Spontaneous fission

Beta particle

Radioactive decay

Positron

Gamma decay

Weak nuclear force

Positron emission tomography

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	Encyclopedia: Positron emission (Site not responding. Last check: 2007-10-07)
		Proton emission (also known as proton radioactivity) is a type of radioactive decay in which a proton is ejected from a nucleus.
		Image of a typical positron emission tomography (PET) facility Positron emission tomography (PET) is a nuclear medicine medical imaging technique which produces a three dimensional image or map of functional processes in the body.
		A positron emission tomography (PET) scan is done in a hospital nuclear medicine department or at a special PET center by a radiologist or nuclear medicine specialist and a nuclear medicine technologist.
	www.nationmaster.com /encyclopedia/Positron-emission (978 words)

	Positron emission tomography - Open Encyclopedia (Site not responding. Last check: 2007-10-07)
		Positron emission tomography (PET) is a nuclear medicine medical imaging technique which produces a three dimensional image or map of functional processes in the body.
		A short-lived radioactive tracer isotope which decays by emitting a positron, chemically combined with a metabolically active molecule, is injected into the living subject (usually into blood circulation).
		However, while other imaging scans such as CT and MRI, isolate organic anatomical changes in the body, PET scanners are capable of detecting areas of molecular biology detail (even prior to anatomical change) via the use of radiolabelled molecular probes that have different rates of uptake depending on the type of tissue involved.
	open-encyclopedia.com /Positron_emission_tomography (1280 words)

	Positron Emission Tomography (Site not responding. Last check: 2007-10-07)
		Positrons travel a short distance in the brain before colliding with an electron.
		The positron and the electron annihilate each other and in the process emit two photons at 180 degrees to each other.
		The substances that can be labeled for PET scanning are limited only by the imagination of the investigators and the physical half-life of the positron emitting label (half-life is the amount of time it takes for half of the label to decay -- the faster the decay, the less time between injection and scanning).
	neurocog.psy.tufts.edu /images/positron_emission_tomography.htm (669 words)

	ipedia.com: Positron emission tomography Article (Site not responding. Last check: 2007-10-07)
		Positron emission tomography is a nuclear medicine medical imaging technique where radioactive 'tracer' isotopes which emit a positron are injected into a living subject.
		Positron emission tomography (PET) is a nuclear medicine medical imaging technique where radioactive 'tracer' isotopes which emit a positron are injected into a living subject (usually into blood circulation).
		However, while other imaging scans such as CT and MRI, isolate organic anatomical changes in the body, PET scanners are capable of detecting areas of molecular biology detail (even prior to anatomical change) via the use of radioisotopes that have different rates of uptake depending on the type of tissue involved.
	www.ipedia.com /positron_emission_tomography.html (782 words)

	positron emission tomography on Encyclopedia.com (Site not responding. Last check: 2007-10-07)
		Positron emission tomography: a tool for identifying the effects of alcohol dependence on the brain.
		Value of F-18 fluorodeoxyglucose positron emission tomography for predicting the clinical outcome of patients with aggressive lymphoma prior to and after autologous stem-cell transplantation *.(clinical...
		Roland Dellinger, 84, undergoes a positron emission tomography
	www.encyclopedia.com /html/X/X-positro.asp (547 words)

	Positron emission tomography - Wikipedia, the free encyclopedia
		A short-lived radioactive tracer isotope which decays by emitting a positron, chemically incorporated into a metabolically active molecule, is injected into the living subject (usually into blood circulation).
		After travelling up to a few millimeters the positron annihilates with an electron, producing a pair of annihilation photons (similar to gamma rays) moving in opposite directions.
		Measurement of clinical and subclinical tumour response using [18F]-fluorodeoxyglucose and positron emission tomography: review and 1999 EORTC recommendations..
	en.wikipedia.org /wiki/Positron_emission_tomography (1314 words)

	Review of F-18 Fluoro-2-Deoxyglucose (F-18 FDG) Positron Emission Tomography in the Evaluation of Malignancy-August 4, ...
		This is a primary medical review of F-18 fluoro-2-deoxyglucose (F-18 FDG) radiopharmaceutical used in positron emission tomography (PET) to determine abnormal glucose metabolism to assist in evaluating malignancy in patients with abnormalities found by other testing modalities or in patients with an existing diagnosis of cancer.
		Positron emission tomography radiopharmaceuticals have been evaluated and approved by the Food and Drug Administration (FDA) for use as diagnostic imaging agents.
		Prospective evaluation of fluorine-18 fluorodeoxyglucose positron emission tomography in breast cancer for staging of the axilla related to surgery and immunocytochemistry.
	www.fda.gov /cder/regulatory/pet/fdgoncologyfinal.htm (17816 words)

	Emory Healthcare: Positron Emission Tomography
		PET, or Positron Emission Tomography, has greatly enhanced the ability to diagnose many diseases in the earliest stages, helping physicians improve treatment for their patients and ultimately, extending and saving lives.
		A Positron Emission Tomography scan using 18-fluorodeoxyglucose, will generate a small amount of radiation that is comparable to what you would get by living in Denver, Colorado for two years.
		When performing Positron Emission Tomography, the use of positron emitting radioisotope is a necessity.
	www.emoryhealthcare.org /departments/Radiology/services/PET.html (1195 words)

	Positron Emission Tomography (PET scan, PET imaging)
		Positron emission tomography, also called PET imaging or a PET scan, is a diagnostic examination that involves the acquisition of physiologic images based on the detection of radiation from the emission of positrons.
		Positrons are tiny particles emitted from a radioactive substance administered to the patient.
		Within this machine are multiple rings of detectors that record the emission of energy from the radioactive substance in your body and permit an image of your body to be obtained.
	www.radiologyinfo.org /content/petomography.htm (1332 words)

	Positron Emission Tomography (PET) Scanning in Breast Cancer
		Positron emission tomography (PET) is a noninvasive nuclear medicine study that has been in existence for almost 30 years, but has been gaining acceptance in oncologic imaging rapidly during the past 5 years.
		Positron emission tomography using [18f]fluorodeoxyglucose for monitoring primary chemotherapy in breast cancer.
		Positron emission tomography using [18f]-fluorodeoxy-d-glucose to predict the pathologic response of breast cancer to primary chemotherapy.
	www.iame.com /learning/petc/pet-cintro.html (3888 words)

	Nuclear Physics and Tomography (Site not responding. Last check: 2007-10-07)
		Positron emission stabilizes the nucleus by removing a positive charge through the conversion of a proton into a neutron.
		The positron combines with an ordinary electron of a nearby atom in an annihilation reaction, forming positronium as an intermediate.
		When a positron comes in contact with an electron, the two particles annihilate turning the mass of the two particles into two 511-keV gamma-rays that are emitted at 180-degree to each other.
	laxmi.nuc.ucla.edu:8000 /lpp/nuclearphysics/imagerecon.html (685 words)

	Positron Emission Tomography Is Superior to Computed Tomography for Metastatic Detection in Melanoma Patients -- ...
		Positron emission tomography scanning in malignant melanoma: clinical utility in patients with stage III disease.
		Use of fluorine-18-fluorodeoxyglucose positron emission tomography in the detection of silent metastases from malignant melanoma.
		Comparison of positron emission tomography scanning and sentinel node biopsy in the detection of micrometastasis of primary cutaneous malignant melanoma.
	www.annalssurgicaloncology.org /cgi/content/full/9/7/646 (4298 words)

	Positron Emission Tomography
		For example, if a PET scan shows that blood flow is reduced to a large area of the heart, but the heart's metabolism is unaffected (which means the heart tissue is not dead), a person may be a candidate for coronary artery bypass surgery.
		Before a positron emission tomography (PET) scan, tell your health professional if you are or might be pregnant or if you are breast-feeding.
		Single photon emission computed tomography (SPECT) imaging is a PET technique that may be used to determine whether a person with chest pain is at high risk for a heart attack.
	www.webmd.com /hw/health_guide_atoz/aa80345.asp (1693 words)

	TRIUMF: Positron Emission Tomography (PET)
		Positrons are given off during the decay of the nuclei of specific radioisotopes.
		When a positron meets an electron, the collision produces two gamma rays having the same energy, but going in opposite directions.
		During a scan the patient reclines on a comfortable couch with his or her head inside the large, doughnut-shaped Positron Emission Tomograph.
	www.triumf.ca /welcome/petscan.html (798 words)

	Amazon.com: Atlas of Clinical Positron Emission Tomography: Books (Site not responding. Last check: 2007-10-07)
		Positron Emission Tomography (PET) is a rapidly developing subspecialty of nuclear medicine which, in a very short space of time, has been shown to have a significant impact on patient management.
		Positron Emission Tomography (PET) is an imaging technique that provides physicians and researchers with unique information about the body's chemistry.
		Positron Emission Tomography is a non invasive, diagnostic imaging technique for measuring the metabolic activity of cells in the human body.
	www.amazon.com /exec/obidos/tg/detail/-/0340740981?v=glance (990 words)

	Positron and Single Photon Emission Tomography
		-ray) emissions of the specific isotopes employed and the sensitivity and sophistication of the instruments used to detect them, the two-dimensional distribution of radioactivity within a brain slice may be inferred from outside of the head.
		Since a positron must generally come to rest in tissues before being able to collide with an electron, annihilation often occurs some distance away from the positron's origin.
		Apart from theoretical limitations arising from positron range (62), image resolution is principally determined by instrumentation and physical factors, such as the precision of collimation, the number and size of detectors, and the accuracy in localizing scintillation events within the crystalline elements.
	www.acnp.org /g4/GN401000088/CH087.html (8023 words)

	The role of positron emission tomography with 18F-fluoro-2-deoxy-D-glucose in respiratory oncology -- Vansteenkiste and ...
		The use of positron emission tomography (PET) in the differential diagnosis of indeterminate solitary pulmonary lesions.
		Positron emission tomography of lung tumors and mediastinal lymph nodes using [18F]fluorodeoxyglucose.
		The usefulness of FDG positron emission tomography for the detection of mediastinal lymph node metastases in patients with non-small cell lung cancer: a comparative study with X-ray computed tomography.
	erj.ersjournals.com /cgi/content/full/17/4/802 (8050 words)

	Encyclopedia of Nursing and Allied Health: Positron emission tomography unit - PET (Site not responding. Last check: 2007-10-07)
		The positron emission tomography (PET) unit is a device used to produce images of the body that reflect biochemical changes taking place in the body.
		Moreover, because PET identifies variations in metabolic activity, the scans are particularly useful in assessing the effectiveness of radiological treatment of cancer; unlike other types of imaging, PET scans can distinguish between (non-viable) scar tissue caused by the radiological treatment of tumors, and viable tumor cells that might have been missed by the treatment.
		In the annihilation reaction that results from this positron-electron collision, high-energy photons are released, and it is these photons that pass through the body and are detected by the PET scanner.
	www.findarticles.com /p/articles/mi_gGENH/is_/ai_2699003624 (1469 words)

	Thoracic positron emission tomography using 18F-fluorodeoxyglucose for the evaluation of residual mediastinal Hodgkin ...
		Thoracic positron emission tomography using 18F-fluorodeoxyglucose for the evaluation of residual mediastinal Hodgkin disease -- Weihrauch et al.
		Whole-body positron emission tomography (PET) for diagnosis of residual mass in patients with lymphoma.
		Positron emission tomography (PET) for staging and evaluation of response to treatment in patients with Hodgkin's disease.
	www.bloodjournal.org /cgi/content/full/98/10/2930 (3699 words)

	The Cost of Positron Emission Tomography in Six United States Veterans Affairs Hospitals and Two Academic Medical ...
		Positron emission tomography: a financial and operational analysis.
		Clinical impact of (18)F fluorodeoxyglucose positron emission tomography in patients with non-small-cell lung lancer: a prospective study.
		Effectiveness of positron emission tomography in the preoperative assessment of patients with suspected non-small-cell lung cancer: the PLUS multicentre randomised trial.
	www.ajronline.org /cgi/content/full/181/2/359 (4472 words)

	Gourt :: Science :: Physics :: Medical Physics :: PET
		Center for Positron Emission Tomography: A Clinical and Research consortium comprised of the State University of New York at Buffalo Medical School / Department of Nuclear Medicine, the Veterans Affairs Medical Center, and the Lucy Dent Imaging Center of Millard Fillmore Hospital.
		Holliston PharmaTest - Positron Emission Tomography Scans (PET): One of the services that this company provides is MicroPET technology, which permits the monitoring of biochemical processes on animals from rodents up to primates.
		Positron Emission Tomography (PET) - The Power of Molecular Imaging: The focus of the UCLA main page is to advertise a 12 page brochure on PET in pdf format.
	science.gourt.com /Physics/Medical-Physics/PET.html (419 words)

	Integrated computed tomography-positron emission tomography in patients with potentially resectable malignant pleural ...
		Integrated computed tomography-positron emission tomography in patients with potentially resectable malignant pleural mesothelioma: Staging implications -- Erasmus et al.
		Integrated computed tomography-positron emission tomography in patients with potentially resectable malignant pleural mesothelioma: Staging implications
		emission tomography in patients with malignant pleural mesothelioma
	jtcs.ctsnetjournals.org /cgi/content/abstract/129/6/1364 (335 words)

	AllRefer.com - positron emission tomography (Medicine) - Encyclopedia
		You are here : AllRefer.com > Reference > Encyclopedia > Medicine > positron emission tomography
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		More articles from AllRefer Reference on positron emission tomography
	reference.allrefer.com /encyclopedia/X/X-positro.html (111 words)

	Beaumont Hospitals - Positron Emission Tomography Post-Graduate Program
		A Positron Emission Tomography (PET) technologist is a nuclear medicine technologist with a specialty in positron imaging.
		This medical imaging specialty employs the use of radioactive pharmaceuticals, a positron emission detecting scanner and a computer with three-dimensional computing and viewing software.
		To prepare for a career as a positron emission tomography specialist, a student must be a graduate of an accredited program in nuclear medicine technology.
	www.beaumonthospitals.com /pls/portal30/cportal30.webpage?l_recent=allied_pet (173 words)

	Positron Emission Tomography Scans in the Evaluation of Postchemotherapy Residual Masses in Patients With Seminoma -- ...
		Positron Emission Tomography Scans in the Evaluation of Postchemotherapy Residual Masses in Patients With Seminoma -- Ganjoo et al.
		Positron Emission Tomography Scans in the Evaluation of Postchemotherapy Residual Masses in Patients With Seminoma
		Stephens AW, Gonin R, Hutchins GD, et al: Positron emission tomography evaluation of residual radiographic abnormalities in postchemotherapy germ cell tumor patients.
	www.jco.org /cgi/content/full/17/11/3457 (2209 words)

	What is PET
		Positron Emission Tomography (PET) is rapidly becoming a major diagnostic imaging modality used predominantly in determining the presence and severity of cancers, neurological conditions, and cardiovascular disease.
		A radiopharmaceutical, such as FDG (fluorodeoxyglucose), which includes both sugar (glucose) and a radionuclide (a radioactive element) that gives off signals, is injected into the patient and its emissions are measured by a PET scanner.
		A PET scanner consists of an array of detectors that surround the patient.
	interactive.snm.org /index.cfm?PageID=972&RPID=924 (1218 words)

	Positron Emission Tomography
		Positron Emission Tomography Scanning in Malignant Melanoma, Clinical Utility in Patients with Stage III Disease.
		Comparative Efficacy of Positron Emission Tomography with FDG and Computed Tomographic Scanning in Preoperative Staging of Non-Small Cell Lung Cancer.
		The Utility of Positron Emission Tomography for the Diagnosis and Staging of Recurrent Esophageal Cancer.
	www.ratc.com /pet_newsletter/pet_references.htm (804 words)

	JAMA -- Abstract: Accuracy of Positron Emission Tomography for Diagnosis of Pulmonary Nodules and Mass Lesions: A ...
		JAMA -- Abstract: Accuracy of Positron Emission Tomography for Diagnosis of Pulmonary Nodules and Mass Lesions: A Meta-analysis, February 21, 2001, Gould et al.
		Accuracy of Positron Emission Tomography for Diagnosis of Pulmonary Nodules and Mass Lesions
		Positron emission tomography scanning with 2-fluoro-2-deoxy-D-glucose as a predictor of response of neoadjuvant treatment for non-small cell carcinoma
	jama.ama-assn.org /cgi/content/abstract/285/7/914 (993 words)

	Welcome to Positron, a pioneer in PET imaging.
		Positron Corporation develops and markets Positron Emission Tomography (PET) scanners.
		Founded in 1983 and headquartered in Houston, Positron is dedicated to producing state-of-the-art PET equipment for use in clinical settings such as hospitals and diagnostic clinics.
		Positron scanners are designed to produce the best cardiac PET images, along with high quality PET imaging for oncology and neurology patients.
	www.positron.com (194 words)

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