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Scintigraphy ("scint") is the use of gamma cameras to capture
Scintigraphy ("scint") is the use of gamma cameras to capture

... In order to detect the gamma photon we use scintillation detectors. A Thallium-activated Sodium Iodide [NaI(Tl)] detector crystal is generally used in Gamma cameras. This is due to this crystal's optimal detection efficiency for the gamma ray. A detector crystal may be circular or rectangular. A gam ...
real-time mr imaging of skeletal muscle motion
real-time mr imaging of skeletal muscle motion

... imaging of cardiac motion and blood flow [5]. These real-time MRI techniques were developed to image the high velocities (up to 10 m/s) of cardiac blood flow. The purpose of this study is to demonstrate the feasibility of using real-time MRI to track the slower velocities (0.01-1 m/s) that are more ...
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ppt

... Radiation from test (accelerated) particles in static turbulent magnetic fields generated by the Weibel instability in 2D PIC simulation y ...
Nuclear medicine in oncology 1: Lymphoma, and cancer of the lung
Nuclear medicine in oncology 1: Lymphoma, and cancer of the lung

... a significant number of patients. Monitoring treatment response. As metabolic changes reflect treatment response more sensitively than morphological changes, the use of PET/CT in the evaluation of treatment response is well established. Residual masses on CT may be due to tumour fibrosis or residual ...
Functional Brain Imaging with Single Photon Emission
Functional Brain Imaging with Single Photon Emission

... splitting into two major design paths: • lower cost yet higher performance whole body imaging systems; and • very high spatial resolution systems aimed primarily at research applications. The major technologies currently under development seem to be centred on improved, cheaper electronics and bette ...
File Ref.No.38933/GA - IV - J2/2013/CU  UNIVERSITY OF CALICUT
File Ref.No.38933/GA - IV - J2/2013/CU UNIVERSITY OF CALICUT

... Physics of B.Sc. level - 60 % Mathematics of B.Sc. Subsidiary level – 20% Chemistry of B.Sc. Subsidiary level – 10% Basic Human Physiology and Anatomy – 10% V. DURATION OF THE COURSE :Two years course work – Four semesters each of 6 ...
Gamna-Gandy bodies: A sign of portal hypertension
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... acquired hemochromatosis, and paroxysmal nocturnal hemoglobinuria, and in those receiving blood transfusions (3, 4). ...
Cross Sectional Medical Imaging: A History
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Upper Quadrant Pain (Chronic Right)

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Policy - Salem Hospital
Policy - Salem Hospital

... Nephropathy: describes a disease process of the kidneys. GFR-glomerular filtration rate is a test to measure the level of kidney function. It is calculated from the results of blood creatinine test, age, body size, and gender. EPOC® (Epocal Inc.): an advanced, handheld blood analyzer that provides r ...
Newsletter - Winter2017 - SCBT-MR
Newsletter - Winter2017 - SCBT-MR

... Garry E. Gold, MD, FSCBTMR, Chairman of the Program Committee, is working hard to coordinate efforts in assembling a robust and varied program. It will not only speak to “hot topics” in Body CT-MR, but also politics in radiology, practice management, a half day workshop on DECT, as well as “artifici ...
Imaging strategies to reduce the risk of radiation in CT studies
Imaging strategies to reduce the risk of radiation in CT studies

... delivered by atomic bombs (gamma radiation) is different from that used in radiology (x-radiation), there is fundamentally no difference in the carcinogenic potential (4). The average number of CT scans conducted for a given medical problem is two, yielding an average total equivalent dose of 40 – 6 ...
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... 10. d. Panoramic radiography became popular in the 1960s with the introduction of the panoramic x-ray machine. 11. c. While cone beam volumetric imaging dedicated to dental applications produces less radiation doses than conventional CT scans, the dose is still 4 to 15 times that required for a pano ...
International Outreach Continues
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... Dr. Garcia’s message to attendees -ibi fere sumus -translates to “we’re almost there”, an encouraging assessment about strides made in this area. In his lecture, Dr. Garcia reviewed progress in diagnostic software tools, contrast resolution, cardiac ultra-fast acquisition cameras, and image reconstr ...
image receptors - Montgomery College
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... Phosphor releases some visible light The x-ray energy is absorbed (trapped) Latent image Sensitive to a wide range of energies Erase plate if not used in 48 hours Process within an hour of exposure Increase mAs as CR is equivalent to 200 screen speed vs 400 screen speed used in film systems…why? ...
general - Bonepit
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... G72. Some patients with brain malignancies located near the eyes notice a faint blue light during treatment with high-energy electrons. This phenomenon is most likely due to: A. fluorescence B. the physiology of human vision C. magnetic fields of the moving electron D. Cerenkov radiation E. luminesc ...
Full Text
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... have to be delivered to the whole body to yield the same biologic consequences (specific for cancer induction risk only) as the dose actually received by the exposed organs. But whether effective dose should be used at all to estimate risk for individual patients undergoing medical imaging procedure ...
Consent Form for Contrast-Enhanced Magnetic Resonance Imaging
Consent Form for Contrast-Enhanced Magnetic Resonance Imaging

... Resonance Imaging (MRI) Scan If you agree to have a contrast-enhanced MRI scan, please sign below. I have received a thorough explanation about contrast-enhanced MRI scans and their risks by reading “Information about Magnetic Resonance Imaging (MRI) Scan with Contrast Medium”, and I understand the ...
IET_Portsmouth_110217
IET_Portsmouth_110217

... • State-of-the-art neurosurgery unit at Erlangen, Germany. • MRI is completely integrated into the operating theatre and used in conjunction with digital images captured from an operating microscope. ...
Final Notes
Final Notes

...  Post-processing (clean up image, enhance edges)  Manipulate image at will in real-time Why not?  Digital is “slower speed” and requires higher exposure  Expensive (upfront) So how does it work?  Everything is the same up to the point where photons hit the receptor  Two types o Computed Radiog ...
Interpretation of measured dose data in X
Interpretation of measured dose data in X

... Figure 4. Conversion factor from incident air kerma to effective dose for the example thorax PA examination of Table 2 for different total filtrations as a function of the half-value layer (HVL). The focus-skin distance (FSD) depends on patient thickness and is not normally readily known. In our st ...
Computed tomography--an increasing source of radiation exposure.
Computed tomography--an increasing source of radiation exposure.

... used for head scans, the table is stationary during a rotation, after which it is moved along In helical CT, which is commonly used for body scans, the table moves continuously as theAuthor x-ray sourceDr. and detectors rotate, Brenner producing a spiral or helical scan. The illustration shows a sin ...
Monthly Quality Control Tests - BC Centre for Disease Control
Monthly Quality Control Tests - BC Centre for Disease Control

...  All CR and some DR/DF manufacturers have custom Image Quality phantoms and automatic software to analyze image quality ...
QC in a Digital World
QC in a Digital World

...  All CR and some DR/DF manufacturers have custom Image Quality phantoms and automatic software to analyze image quality ...
Dose Reduction and Artifacts in CT
Dose Reduction and Artifacts in CT

... Beam Hardening Partial Volume Averaging ...
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Image-guided radiation therapy

Image-guided radiation therapy (IGRT) is the process of frequent two and three-dimensional imaging, during a course of radiation treatment, used to direct radiation therapy utilizing the imaging coordinates of the actual radiation treatment plan. The patient is localized in the treatment room in the same position as planned from the reference imaging dataset. An example of IGRT would include localization of a cone beam computed tomography (CBCT) dataset with the planning computed tomography (CT) dataset from planning. IGRT would also include matching planar kilovoltage (kV) radiographs or megavoltage (MV) images with digital reconstructed radiographs (DRRs) from the planning CT. These two methods comprise the bulk of IGRT strategies currently employed circa 2013.This process is distinct from the use of imaging to delineate targets and organs in the planning process of radiation therapy. However, there is clearly a connection between the imaging processes as IGRT relies directly on the imaging modalities from planning as the reference coordinates for localizing the patient. The variety of medical imaging technologies used in planning includes x-ray computed tomography (CT), magnetic resonance imaging (MRI), and positron emission tomography (PET) among others. The precision of IGRT is significantly improved when N-localizer technology is used in conjunction with these medical imaging technologies. Through advancements in imaging technology, combined with a further understanding of human biology at the molecular level, the impact of IGRT on radiotherapy treatment continues to evolve.
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