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Orex_ACLxy_Brochure
Orex_ACLxy_Brochure

... quality control. Workflow is streamlined because technicians don’t have to travel to remotely located QC stations and queue up and wait to process plates. The Orex scanners can be networked via a local area network (LAN) to import information from patient information systems or export images to remo ...
Advanced 3D mammography leads to more accurate breast cancer
Advanced 3D mammography leads to more accurate breast cancer

... Digital breast tomosynthesis is emerging as the new gold standard in mammography. Also known as 3D mammography, this breast imaging technology provides radiologists with multiple, thin-section images through the breast, increasing breastcancer detection rates while reducing the rate of false-positiv ...
(torso and head) phantoms. - Image Processing and Analysis Group
(torso and head) phantoms. - Image Processing and Analysis Group

... planning have become more sophisticated [15-18]. These new therapy techniques can be more effectively investigated with higher resolution, computerized realistic human models. In order to make 3-dimensional anatomical data suitable for use in any of these radiologic calculations, we must be able to ...
Imaging veins, oxygen extraction fraction, arteries - SWIM
Imaging veins, oxygen extraction fraction, arteries - SWIM

... The timings are pre contrast, 50 minutes (central column) and 1.5h (right column). The dextran remained in the CSF channels, LV, 3rd ventricle aqueduct, 4th ventricle and resulted in higher concentration and permeated to the parenchyma from the CSF channels. SWIM showed no uptake in normal rats (fir ...
Adult patient doses in interventional neuroradiology
Adult patient doses in interventional neuroradiology

... Interventional neuroradiology studies the vasculature and potential pathologies of the brain by means of catherization performed with the transfemoral artery technique.1,2 Most interventional neuroradiologic procedures are considered to be of a diagnostic nature where the objective is to identify a ...
Efficiency in CT SOMATOM Emotion Data
Efficiency in CT SOMATOM Emotion Data

... monitoring scans at one slice level and analysis of the time density curve in a ROI (Region of Interest) CARE Vision CT* with HandCARE Perform interventions with real-time image guidance, including CT fluoroscopic mode. Includes Real-time image guidance: Image rate up to 8 frames/s Image matrix 512 ...
Welcome to Radiology
Welcome to Radiology

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ACR Practice Guideline for the Performance of Computed
ACR Practice Guideline for the Performance of Computed

... all cases (especially following incomplete endoscopy). When feasible, the use of tagging is encouraged by many experts. The goal of tagging is to passively incorporate contrast into any residual fluid and stool in order to raise their inherent CT densities, which helps to discriminate these residua ...
2011 Rosen et al. J Am Coll Radiol.
2011 Rosen et al. J Am Coll Radiol.

... level (RRL) indication has been included for each imaging examination. The RRLs are based on effective dose, which is a radiation dose quantity that is used to estimate population total radiation risk associated with an imaging procedure. Patients in the pediatric age group are at inherently higher ...
An Emory First
An Emory First

... Demolition and construction for the new File Room will begin the week of November 19. Discussions are taking place to temporarily move the Abdominal reading room to the former IVR Room 16 (A149) from their current location, Rm A138. This transitional move would allow the construction of the new MRI ...
Extracting respiratory signals from thoracic cone beam CT
Extracting respiratory signals from thoracic cone beam CT

... guidance for treatment, 4D-CBCT has been developed, where all the projections are first sorted into breathing phase bins and then CBCT images at different phases are reconstructed (Sonke et al., 2005; Kriminski et al., 2005; Li et al., 2006b; Dietrich et al., 2006; Purdie et al., 2006; Lu et al., 20 ...
Society of Nuclear Medicine
Society of Nuclear Medicine

... approximately 35–50% of the usable field of view (using magnification during image acquisition if a large field of view camera is employed to record the data). Images of diagnostic quality can be obtained if a minimum of 500,000 counts are recorded in each view (a minimum of 400 cts/cm2 of normal my ...
CT Dose Summit 2011
CT Dose Summit 2011

... CT Dose Summit 2011 ...
Proton Spectroscopic and Dynamic Contrast
Proton Spectroscopic and Dynamic Contrast

... At present, the evaluation of prostate cancer is more determined by the use of clinical nomograms including prostate-specific antigen (PSA) determination and by pathologic findings of the tumour at biopsy or after surgery. For a long time, a valid diagnostic imaging procedure has not been available ...
Ct scan code 2016
Ct scan code 2016

... scan. CT Scan vs. CAT Scan Diagnostic exams are performed to spot any unusual occurrences that are happening in the human body. Many procedures, like the MRI, X-Ray Most CT scans are conducted as an outpatient procedure. Since they do not require hospitalization, the patient has the test and then go ...
September - RadMD.com
September - RadMD.com

... Request for a follow-up study - A follow-up study may be needed to help evaluate a patient’s progress after treatment, procedure, intervention or surgery. Documentation requires a medical reason that clearly indicates why additional imaging is needed for the type and area(s) requested. Conductive He ...
Medical Imaging
Medical Imaging

... abnormalities. Designed for graduate technologists or senior radiography students. ARRT certification or department permission required. ...
THALLOUS CHLORIDE Tl 201 INJECTION
THALLOUS CHLORIDE Tl 201 INJECTION

... Intravenous administration of Thallous Chloride Tl 201 Injection is characterized by rapid biexponential clearance from the blood with about 91.5% of blood radioactivity disappearing with a half-life of approximately 5 minutes and the remainder with a half-life of about 40 hours. Maximal concentrati ...
A Hybrid Approach for Accurate Estimation of the Scatter
A Hybrid Approach for Accurate Estimation of the Scatter

... Abstract– The corruption of projection data in x-ray CT with scattered radiation decreases low contrast detectability (LCD) in reconstructed images. Scatter removal is therefore mandatory in CT imaging because of the need to generate images presenting clinically acceptable LCD. The assessment of the ...
123I-FP-CIT SPECT Procedure Guidelines
123I-FP-CIT SPECT Procedure Guidelines

... Anatomic imaging is of little help when determining the integrity of this system, but both presynaptic and postsynaptic levels can be targeted by PET and SPECT tracers. There are several PET tracers (e.g., 18F-dihydroxyphenylalanine for L-dihydroxyphenylalanine decarboxylase activity; 11C-dihydrotet ...
Wake Radiology Expands Pediatric Imaging
Wake Radiology Expands Pediatric Imaging

... aren’t used to working with children, that can make the study more difficult. As you can imagine, catheterizing a child can be difficult not only for the patient, but for the parents who are worried their child is uncomfortable. Having pediatric radiologists and technologists who are familiar with d ...
Manning, David (2005) Professor David Manning Public
Manning, David (2005) Professor David Manning Public

... Röntgen's discovery of x-rays in 1895, gave to medicine the extraordinary benefit of being able to see inside the living body without surgery. Over time, technology has added to the sophistication of imaging processes in medicine and we now have a wide range of techniques at our disposal for the inv ...
ACRIN Breast Committee Overview
ACRIN Breast Committee Overview

... –Assessment of diagnostic accuracy of relatively mature technology ...
3D Dosimetry of the Amersham 6711 and AgX100 Iodine
3D Dosimetry of the Amersham 6711 and AgX100 Iodine

... A. Thomas , J. Newton , M. Oldham. “A method to correct for stray light in telecentric optical‐CT  imaging of radiochromic dosimeters”. (accessed Aug 2012) M. Oldham. “3D Dosimetry, and Clinically Meaningful QA” presentation. (accessed Aug 2012)  R Popert, P Acher, N Nichol, S Morris, Ron Beaney. “B ...
Radiation Safety Guide for Diagnostic Imaging X
Radiation Safety Guide for Diagnostic Imaging X

... The effects of radiation, like those of most chemical substances, can be seen clearly only at doses much higher than are allowed by Federal and State regulations. Biological effects of radiation may be classified as prompt or delayed. Prompt effects can appear in a matter of minutes to as long as a ...
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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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