Radiological Protection in Cone Beam Computed Tomography
... Approved by the Commission in Month 201X Abstract-The Commission’s Publications 87 and 102 dealt with patient dose management in ...
... Approved by the Commission in Month 201X Abstract-The Commission’s Publications 87 and 102 dealt with patient dose management in ...
Diagnostic Reference Levels in Medical Imaging
... subsequently developed further, and practical guidance was provided in 2001. DRLs have been proven to be an effective tool that aids in optimisation of protection in the medical exposure of patients for diagnostic and interventional procedures. However, with time it has become evident that additiona ...
... subsequently developed further, and practical guidance was provided in 2001. DRLs have been proven to be an effective tool that aids in optimisation of protection in the medical exposure of patients for diagnostic and interventional procedures. However, with time it has become evident that additiona ...
Liver Lesion — Initial Characterization
... contraindication to CT and MRI contrast agents. Consider this procedure if the lesion is not cystic on US. Consider this procedure if there is a contraindication to MRI. Consider this procedure for obtaining a tissue diagnosis and when imaging is not conclusive. This procedure may be appropriate for ...
... contraindication to CT and MRI contrast agents. Consider this procedure if the lesion is not cystic on US. Consider this procedure if there is a contraindication to MRI. Consider this procedure for obtaining a tissue diagnosis and when imaging is not conclusive. This procedure may be appropriate for ...
Acute Chest Pain — Suspected Aortic Dissection
... CTA, transesophageal echocardiography (TEE), and magnetic resonance imaging (MRI) in detecting aortic dissection [12,15,19,25]. Evaluation of the relative accuracy of these modalities is confounded by the fact that technical improvements in CT, MRI, and TEE have outpaced our ability to perform neces ...
... CTA, transesophageal echocardiography (TEE), and magnetic resonance imaging (MRI) in detecting aortic dissection [12,15,19,25]. Evaluation of the relative accuracy of these modalities is confounded by the fact that technical improvements in CT, MRI, and TEE have outpaced our ability to perform neces ...
A literature review of electronic portal imaging for
... from paper to electronic systems, or from manual to automatic systems. Regardless of whether the treatment technique is conventional or advanced, the department is large or small, or the treatment makes use of the latest technology or not, errors can, and often do, occur during the delivery process. ...
... from paper to electronic systems, or from manual to automatic systems. Regardless of whether the treatment technique is conventional or advanced, the department is large or small, or the treatment makes use of the latest technology or not, errors can, and often do, occur during the delivery process. ...
Diffusion Tensor Imaging: Concepts and Applications
... independent of the MR effect or the magnetic field. This is not the case for most MRI-accessible parameters, such as T1 or T2. Potential clinical applications of water diffusion MRI were suggested very early (5). The most successful application of diffusion MRI since the early 1990s has been brain i ...
... independent of the MR effect or the magnetic field. This is not the case for most MRI-accessible parameters, such as T1 or T2. Potential clinical applications of water diffusion MRI were suggested very early (5). The most successful application of diffusion MRI since the early 1990s has been brain i ...
Characterization of the homogeneous tissue mixture approximation
... imaging obtained using the actual glandular tissue distribution in the breast to that obtained using the homogeneous tissue mixture approximation. Methods: Twenty volumetric images of patient breasts were acquired with a dedicated breast CT prototype system and the voxels in the breast CT images wer ...
... imaging obtained using the actual glandular tissue distribution in the breast to that obtained using the homogeneous tissue mixture approximation. Methods: Twenty volumetric images of patient breasts were acquired with a dedicated breast CT prototype system and the voxels in the breast CT images wer ...
Chapter 15: Special Procedures and Techniques in
... needle electrode into any given structure of the brain and its destruction by electrolysis or electro-coagulation (HORSLEY & CLARKE, 1908; SPIEGEL et al., 1947). It would therefore seem feasible to replace the needle by narrow beams of radiant energy directed at the target in the brain and thereby p ...
... needle electrode into any given structure of the brain and its destruction by electrolysis or electro-coagulation (HORSLEY & CLARKE, 1908; SPIEGEL et al., 1947). It would therefore seem feasible to replace the needle by narrow beams of radiant energy directed at the target in the brain and thereby p ...
Imag - University of Cincinnati College of Medicine
... with the most recent two years as the lead technologist/ assistant clinical operations manager. She reports to Carl Whittenburg, Radiology Executive Director, Business and Administration. ...
... with the most recent two years as the lead technologist/ assistant clinical operations manager. She reports to Carl Whittenburg, Radiology Executive Director, Business and Administration. ...
Magnetic Resonance Curriculum
... magnetic resonance (MR) technology. This document represents a collaborative effort involving representatives from the American Society of Radiologic Technologists (ASRT), the Association of Educators in Imaging and Radiologic Sciences (AEIRS) and the Section for Magnetic Resonance Technologists (SM ...
... magnetic resonance (MR) technology. This document represents a collaborative effort involving representatives from the American Society of Radiologic Technologists (ASRT), the Association of Educators in Imaging and Radiologic Sciences (AEIRS) and the Section for Magnetic Resonance Technologists (SM ...
The State of Forensic Radiography in the United States
... testimony into the early 20th century, most judges adopted the basic procedure applied by Judge Lefevre. This included establishing that “a skilled operator, operating with adequate equipment under proper conditions, had produced the particular image.”2 Today, digital imaging requires that operators ...
... testimony into the early 20th century, most judges adopted the basic procedure applied by Judge Lefevre. This included establishing that “a skilled operator, operating with adequate equipment under proper conditions, had produced the particular image.”2 Today, digital imaging requires that operators ...
Magnetic Resonance Curriculum
... magnetic resonance (MR) technology. This document represents a collaborative effort involving representatives from the American Society of Radiologic Technologists (ASRT), the Association of Educators in Imaging and Radiologic Sciences (AEIRS) and the Section for Magnetic Resonance Technologists (SM ...
... magnetic resonance (MR) technology. This document represents a collaborative effort involving representatives from the American Society of Radiologic Technologists (ASRT), the Association of Educators in Imaging and Radiologic Sciences (AEIRS) and the Section for Magnetic Resonance Technologists (SM ...
Multilayer Energy Discriminating Detector for Medical X
... including any required final revisions, as accepted by my examiners. I understand that my thesis may be made electronically available to the public. ...
... including any required final revisions, as accepted by my examiners. I understand that my thesis may be made electronically available to the public. ...
evaluation of a diffraction-enhanced imaging (dei)
... without distinction between transmitted, scattered, or refracted x-rays. Diffractionenhanced imaging (DEI) allows for increased contrast with decreased radiation dose compared to conventional mammographic imaging due to monochromatic x-rays, its unique refraction-based contrast mechanism, and excell ...
... without distinction between transmitted, scattered, or refracted x-rays. Diffractionenhanced imaging (DEI) allows for increased contrast with decreased radiation dose compared to conventional mammographic imaging due to monochromatic x-rays, its unique refraction-based contrast mechanism, and excell ...
the Abstract-Book here
... M. Pearl, M. Janowski, E. Wyse, E. Ngen, A. Bar-Shir, A. Gilad, P. Walczak Baltimore, MD, USA ...
... M. Pearl, M. Janowski, E. Wyse, E. Ngen, A. Bar-Shir, A. Gilad, P. Walczak Baltimore, MD, USA ...
- AMS Tesi di Dottorato
... main advantages of MDCT is the shorter acquisition time, wider scanning range, improved temporal and spatial resolution. Images could be reconstructed later in images of thinner slices. With single-slice spiral CT, the ideal of isotropic resolution can only be achieved for very limited scan ranges ...
... main advantages of MDCT is the shorter acquisition time, wider scanning range, improved temporal and spatial resolution. Images could be reconstructed later in images of thinner slices. With single-slice spiral CT, the ideal of isotropic resolution can only be achieved for very limited scan ranges ...
image guided radiation therapy applications for
... Physics Unit. In particular Yong Chen relentlessly looked at ultrasound images of the prostate and his time spent on the prostate study was much appreciated. Andrew Alexander and Emily Poon helped me with reading DICOM files, and provided a platform on which to analyze dose distributions. Geneviève ...
... Physics Unit. In particular Yong Chen relentlessly looked at ultrasound images of the prostate and his time spent on the prostate study was much appreciated. Andrew Alexander and Emily Poon helped me with reading DICOM files, and provided a platform on which to analyze dose distributions. Geneviève ...
Retinal assessment using optical coherence tomography
... used to measure the delay of light reflected from tissue structures with near micron precision. Because femtosecond lasers were too bulky and expensive for routine clinical use, Huang worked on an interferometer system that could use a cheap and compact diode light source to measure the time-of-flig ...
... used to measure the delay of light reflected from tissue structures with near micron precision. Because femtosecond lasers were too bulky and expensive for routine clinical use, Huang worked on an interferometer system that could use a cheap and compact diode light source to measure the time-of-flig ...
Real-Time 3D Echocardiographic Quantification of Left Atrial Volume
... underestimated maximal LAV by 31 ⫾ 25 ml and minimal LAV by 16 ⫾ 32 ml, 3DE resulted in a minimal bias of ⫺1 ⫾ 14 ml for maximal LAV and 0 ⫾ 21 ml for minimal LAV. Interobserver and intraobserver variability of 2DE and 3DE measurements of maximal LAV were similar (7% to 12%) and approximately 2 time ...
... underestimated maximal LAV by 31 ⫾ 25 ml and minimal LAV by 16 ⫾ 32 ml, 3DE resulted in a minimal bias of ⫺1 ⫾ 14 ml for maximal LAV and 0 ⫾ 21 ml for minimal LAV. Interobserver and intraobserver variability of 2DE and 3DE measurements of maximal LAV were similar (7% to 12%) and approximately 2 time ...
The Coalescence of the Foramen Lacerum Foramen Lacerum
... plexus passes through the carotid canal to reach the foramen lacerum. The lacerum segment of the internal carotid artery passes over the foramen lacerum to reach the cavernous sinus. The anatomic location of the foramen lacerum is perpendicular. The volume rendering technique may be used in the thre ...
... plexus passes through the carotid canal to reach the foramen lacerum. The lacerum segment of the internal carotid artery passes over the foramen lacerum to reach the cavernous sinus. The anatomic location of the foramen lacerum is perpendicular. The volume rendering technique may be used in the thre ...
A Monte Carlo based three-dimensional dose reconstruction
... compared with the measured dose and differences are quantified at the plane of the portal imager. The difficulty with this method is that it is not clear how differences at the plane of the EPID are related to the dose in the target volume or in normal tissues. A backward approach3–5,15–20 is used t ...
... compared with the measured dose and differences are quantified at the plane of the portal imager. The difficulty with this method is that it is not clear how differences at the plane of the EPID are related to the dose in the target volume or in normal tissues. A backward approach3–5,15–20 is used t ...
Update and review on the basics of brachial plexus imaging
... Traditional magnetic resonance imaging (MRI) of the brachial plexus ...
... Traditional magnetic resonance imaging (MRI) of the brachial plexus ...
Mammography-Chapter 8
... Targets used in combination with specific tube filters to achieve optimal energy spectra ...
... Targets used in combination with specific tube filters to achieve optimal energy spectra ...
Cécile BOPP Le proton : sonde dosimétrique et diagnostique
... protons, aucune dose déposée en aval du pic de Bragg. Pour les particules plus lourdes, telles les ions carbone, la courbe de dépôt de dose présente une extension, c’est à dire un dépôt de dose en aval du pic de Bragg, dûe aux particules secondaires génerées par les interactions nucléair ...
... protons, aucune dose déposée en aval du pic de Bragg. Pour les particules plus lourdes, telles les ions carbone, la courbe de dépôt de dose présente une extension, c’est à dire un dépôt de dose en aval du pic de Bragg, dûe aux particules secondaires génerées par les interactions nucléair ...
U n i v
... Space in the MRI apparatus into which the patient or specimen is placed in order to be examined. Ghost images location. ...
... Space in the MRI apparatus into which the patient or specimen is placed in order to be examined. Ghost images location. ...
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.