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Radiation Protection and Performance Evaluation of PET-CT
Radiation Protection and Performance Evaluation of PET-CT

... 2.3.1.1 Special care must be exercised regarding radiation shielding requirements for PETCT facility design. Appropriate shielding must be provided for patient injection/uptake rooms, PET-CT imaging suites, and any other areas where PET radiopharmaceuticals are prepared, used, or stored. 2.3.1.2 Due ...
Functional neuroimaging
Functional neuroimaging

... Radioactive labeling of some compound that is familiar to the body (such as glucose or water). The radioactive material is administered to the subject. PET images the electromagnetic radiation induced by the decay of the PET radioisotopes. ...
Neotect - people.vcu.edu
Neotect - people.vcu.edu

...  Radiologist  71% sensitive, 79% specific, 72% accurate ...
Senior pets - La Costa Animal Hospital!
Senior pets - La Costa Animal Hospital!

... instead our goal is to maximize quality of life for as long as we can. Chemotherapy doses are generally lower than the doses used in humans, and pets are very tolerant of these treatments—rarely can you tell by looking at a pet that they are on chemo! Surgeries tend to be less invasive and often foc ...
Physics of Radiology
Physics of Radiology

... • CT scan – a diagnostic test that combines X-rays with computer technology • A series of X-rays from many different angles are used to create a cross-sectional image of the patient’s body ...
Modern physics concepts The Photon Concept
Modern physics concepts The Photon Concept

... that is processed to form an image of the body • Energy from radio waves excite the H atoms which then emit a signal that is detected by a receiving antenna • The radio signal can be made to encode position information by varying the main magnetic field using auxiliary coils that are rapidly switche ...
L35
L35

... systematically alter the alignment of this magnetization, causing the hydrogen nuclei to produce a rotating magnetic field detectable by the scanner. • This signal can be manipulated by additional magnetic fields to build up enough information to allow computers to construct an image of the ...
Imaging Basics
Imaging Basics

... © Jimoid.com 2005 ...
L34.ppt - University of Iowa Physics
L34.ppt - University of Iowa Physics

... overlap. A full three dimensional image can be reconstructed using computers. ...
Arsenic isotopes in biology As and As are important radioactive
Arsenic isotopes in biology As and As are important radioactive

... radioactive isotope within the body are then constructed by computer analysis. The imaging often is performed with an X-ray CT scan in the same instrument. [return] proton – an elementary particle having a rest mass of about 1.673 × 10–27 kg, slightly less than that of a neutron, and a positive ele ...
Cognitive Neuroscience Methods of Cognitive Neuroscience
Cognitive Neuroscience Methods of Cognitive Neuroscience

... The use of PET and fMRI in cognitive neuroscience is based on the concept that the neurons in brain regions which are involved in a cognitive function increase their metabolic activity during that function. Ex 1: in FDG PET imaging, a radioactively labeled glucose analog is injected into the bloods ...
Medical imaging and processing software
Medical imaging and processing software

... data in serial section format in the form of 2D images. These images represent a finite thickness of data taken at increments along the object being scanned. Think of these stacked 2D images together forming a 2.5D, or pseudo-3D, volume. For example, a CT scan can be taken using a slice thickness of ...
For immediate release
For immediate release

... Mercy Hospital for Women radiologist wins national award to further important research Yvonne Ho will travel to China next month to research ways of improving the communication of patient scans and X-rays in Australia. The Mercy Hospital for Women radiologist has been announced as a recipient of a 2 ...
L34.ppt - University of Iowa Physics
L34.ppt - University of Iowa Physics

... overlap. A full three dimensional image can be reconstructed using computers. ...
Parts of a Neuron…… Neuronal Communication….
Parts of a Neuron…… Neuronal Communication….

... different parts of the body: knees, shoulders, wrists, heads, necks and so on. These coils usually conform to the contour of the body part being imaged, or at least reside very close to it during the exam. At approximately the same time, the three gradient magnets jump into the act. • They are arran ...
Brain scanning techniques (CT, MRI, fMRI, PET, SPECT, DTI, DOT)
Brain scanning techniques (CT, MRI, fMRI, PET, SPECT, DTI, DOT)

... by the PET scan. As the tracer decays, there is a point when gamma photons are emitted almost opposite to each other, (‘annihilation’ in the Figure (7)), the timing of this event is detected and will ultimately improve the detail of the image. This system not only identifies the activated area of th ...
L34.ppt - University of Iowa Physics
L34.ppt - University of Iowa Physics

... overlap. A full three dimensional image can be reconstructed using computers. ...
Procedure Guideline for Tumor Imaging with 18F
Procedure Guideline for Tumor Imaging with 18F

... PET is a tomographic scintigraphic technique in which a computer-generated image of local radioactive tracer distribution in tissues is produced through the detection of annihilation photons that are emitted when radionuclides introduced into the body decay and release positrons. 18FFDG PET is a tom ...
Shielding of Medical Facilities. Shielding Desing Considerations for
Shielding of Medical Facilities. Shielding Desing Considerations for

... In a typical practice, PET/CT patients are injected with an average activity of about 555 MBq (15 mCi) of F-18 FDG and instructed to lie down in what is called the uptake room for about 45-60 minutes while the radionuclide distributes throughout their body. They are then instructed to void their bla ...
Imaging Sciences International Announces Tru-Pan™ for i
Imaging Sciences International Announces Tru-Pan™ for i

... The maker of the leading i-CAT Cone Beam 3-D system introduces the industry’s first patented, one-click volumetric pan. Hatfield, PA (July 31, 2009) Imaging Sciences is proud to introduce Tru-Pan, another breakthrough in Cone Beam Technology for the award-winning i-CAT. Tru-Pan is revolutionary soft ...
Is MRI superior to other imaging techniques (CT-scan, x
Is MRI superior to other imaging techniques (CT-scan, x

... Is MRI superior to other imaging techniques (CT-scan, x-ray, etc.)? Often, yes. MR images can be made from many different angles to give a better view of the tissues in question. MRI can also provide a level of detail that is often difficult to achieve with x-rays or other imaging systems. Because i ...
Medical Imaging and You
Medical Imaging and You

... imaging tests than ever before to help them diagnose, manage and treat internal conditions. This brochure provides a basic understanding of radiation, its use in medical imaging, the risks and benefits, and the safety factors built into imaging procedures. ...
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04 Basic Concepts of Other Imaging Modalities 08

... • Bone scans or salivary gland scans ...
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... At 24 weeks, you can see the face, structures in the brain and the heart. If there’s a problem and the baby is born now, it will be about 4 months premature and will weight as much as a bag of sugar. This is the most premature that babies can be. ...
Ch 1 Basic Imaging Principles
Ch 1 Basic Imaging Principles

... are bound to biological molecules that are naturally consumed by body tissues. Nuclear medicine imaging reflects the local concentration of a radiotracer within the body. Since this concentration is tied to the physiological behavior of the carrier molecule within the body, nuclear medicine imaging ...
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Positron emission tomography



Positron emission tomography (PET) is a nuclear medicine, functional imaging technique that produces a three-dimensional image of functional processes in the body. The system detects pairs of gamma rays emitted indirectly by a positron-emitting radionuclide (tracer), which is introduced into the body on a biologically active molecule. Three-dimensional images of tracer concentration within the body are then constructed by computer analysis. In modern PET-CT scanners, three dimensional imaging is often accomplished with the aid of a CT X-ray scan performed on the patient during the same session, in the same machine.If the biologically active molecule chosen for PET is fluorodeoxyglucose (FDG), an analogue of glucose, the concentrations of tracer imaged will indicate tissue metabolic activity as it corresponds to the regional glucose uptake. Use of this tracer to explore the possibility of cancer metastasis (i.e., spreading to other sites) is the most common type of PET scan in standard medical care (90% of current scans). However, on a minority basis, many other radioactive tracers are used in PET to image the tissue concentration of other types of molecules of interest. One of the disadvantages of PET scanners is their operating cost.
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