Single photon emission computed tomography

6(1) 018-026 (2014) - 018 J Cancer Sci Ther ISSN: 1948-5956 JCST, an open access journal Keywords: Ridges; Registration; Gaussian; Butterworth; Cross- correlate Nomenclature: CT: Computed Tomography; MRI: Magnetic Resonance Imaging; PET: Positron Emission Tomography; SPECT: Single Photon Emission Computed Tomography; Prophylactic cranial radiotherapy (PCR) Introduction Image registration is a vital problem in medical imaging. Image registration is the process of geometrically aligning two or

size or medial temporal lobe atrophy. As hippocampal sizes decrease in average developing, age-specific patterns are required. Functional brain imaging with fluorodeoxyglucose positron emission tomography (FDG-PET), functional MRI, perfusion magnetic reasoning imaging, or single-photon emission measured tomography (SPECT) shows different areas of low metabolism (PET) and hypoperfusion in Alzheimer disease. Both FDG-PET and SPECT are the unique functional neuroimaging techniques that are currently

Stem cells are unspecialized cell that can both reproduce itself indefinitely and, under appropriate conditions, differentiate into specialized cells of one or more types. (Reece, Jane B., and Lisa A. Urry, 2011.) The term “stem cells” were first seen in scientific literature in 1868, a German biologist Ernst Haeckel used this term to describe the fertilized egg that becomes an organism. On February 2, 1963 the firs piece of evidence of blood stem cells appear, Ernest McCulloch and James Till conducted

Methods of Assessment of LV Mass and Geometry Estimation of LV mass in epidemiological studies, the diagnostic classification of LV hypertrophy, and studies of the effects of therapeutic intervention must depend on reliable and comparable measurement techniques. For long time, the gold standard for estimation of the cardiac mass was autopsy. Over the last decades, and due to the advances in the different imaging modalities and the new evolving technologies, many techniques were developed to estimate

Stem cells are unspecialized cell that can both reproduce itself indefinitely and, under proper conditions, differentiate into specialized cells of one or more types. (Reece, Jane B., and Lisa A. Urry, 2011.) The term “stem cells” were first seen in scientific literature in 1868, a German biologist Ernst Haeckel used this term to describe the fertilized egg that becomes an organism. On February 2, 1963 the firs piece of evidence of blood stem cells seem, Ernest McCulloch and James Till conducted

the heart muscle functions; a low dose of radioactive agent is used for this study usually technetium -99m based radiotracer. There are two different types of techniques used for myocardial perfusion imaging, single photon emission computed tomography (SPECT) and positron emission tomography (PET). Myocardial perfusion imaging is usually done for patients who experience some type of chest discomfort, recent myocardial infarction, or to access the blood flow to the myocardium that has been restored

The use of radioactive materials seems dangerous at first, especially when you are injecting them into the human body. But the type of radioactive materials that are used in this kind of medicine are almost harmless. The radioactive material used in this type of medicine are called radiotracers, they are never overdosed to prevent sickness and health problems. Radiotracers are harmless, when they get into your body by either being injected, inhaled, or swallowed they do their job and when it's complete

revolution. Beginning with the most rudimentary imaging techniques, fluorescent screens and contrast media, radiology and related technology developments picked up momentum, yielding notable methods like computed tomography (CT), single photon emission tomography (SPET), and positron emission tomography (PET) scans within a short time span. However, it wasn’t until 1959, when Singer, a faculty at the University of California-Berkeley, proposed a novel concept implying that NMR can be applied to create

Practicable) principle applies across all imaging modalities. This essay looks at Computed Tomography(CT), Magnetic Resonance Imagine (MRI) and Ultrasound (US), modalities used disease and pathology diagnosis. It will look at the scientific principles. Comparing the risks and hazards associated with each modality when examining pregnant patients. Risk reduction and safety will be discussed. Scientific Principles Computed Tomography CT is cross-sectional image acquisition using the x-ray beam transmission

a staple medical imaging community. (1). How MRI Works: MRI takes advantage of the magnetic and quantum properties of hydrogen nuclei within the human body to create detailed images of the area in question. A hydrogen nucleus, sometimes called a single proton, is probed, as a result of its natural abundance in organic biomolecules and water. (2), (3). A fundamental truth of quantum particles is the existence of spin. Similar to the spin of an electron, nuclei contain a spin. (Hopkins). Conceptually