Development of methods for analysis and reconstruction of nuclear
... This project was performed within nuclear medicine physics and had the main goal to develop new methods for analysis of kidney and bone marrow dosimetry and diagnostics of tumour involvement in the liver, as well as to create a novel Monte Carlo-based reconstruction method for single photon emission ...
... This project was performed within nuclear medicine physics and had the main goal to develop new methods for analysis of kidney and bone marrow dosimetry and diagnostics of tumour involvement in the liver, as well as to create a novel Monte Carlo-based reconstruction method for single photon emission ...
Diffusion-weighted MRI in the characterization of pleural effusions
... and lactate dehydrogenase (LDH) concentration in blood and pleural effusion can be used to differentiate EEs from TEs (2). However, occasionally Light criteria may misclassify a TE as an EE, especially in patients who have undergone diuresis (3, 4). In such cases, albumin levels in blood and pleural ...
... and lactate dehydrogenase (LDH) concentration in blood and pleural effusion can be used to differentiate EEs from TEs (2). However, occasionally Light criteria may misclassify a TE as an EE, especially in patients who have undergone diuresis (3, 4). In such cases, albumin levels in blood and pleural ...
2003-Conventional and diffusion weighted MRI in methanol poisoning
... The basis for the selective vulnerability of methanol intoxication is unknown (7, 8). The observed lesions most probably represent direct toxic effects of the metabolite formate (10), as well as injury secondary to hypoxia and acidosis (7). In conclusion, methanol poisonings are rare, but do still o ...
... The basis for the selective vulnerability of methanol intoxication is unknown (7, 8). The observed lesions most probably represent direct toxic effects of the metabolite formate (10), as well as injury secondary to hypoxia and acidosis (7). In conclusion, methanol poisonings are rare, but do still o ...
10 Production and Selection of Metal PET Radioisotopes for
... become non-collinear) compromising spatial resolution. As a result, whole body and brain PET have optimum resolutions of approximately 4-6 mm and 2 mm (Lancelot, S. & Zimmer, L., 2010). For animal PET, the radial distance of the detector is smaller therefore the achievable spatial resolution is 1-2 ...
... become non-collinear) compromising spatial resolution. As a result, whole body and brain PET have optimum resolutions of approximately 4-6 mm and 2 mm (Lancelot, S. & Zimmer, L., 2010). For animal PET, the radial distance of the detector is smaller therefore the achievable spatial resolution is 1-2 ...
Quality control methods for magnetic resonance imaging in
... One definition of quality assurance (QA) is: “a program for the systematic monitoring and evaluation of the various aspects of a project, service, or facility to ensure that standards of quality are being met” (Merriam-Webster 2015). A definition of quality control (QC) is “an aggregate of activitie ...
... One definition of quality assurance (QA) is: “a program for the systematic monitoring and evaluation of the various aspects of a project, service, or facility to ensure that standards of quality are being met” (Merriam-Webster 2015). A definition of quality control (QC) is “an aggregate of activitie ...
MEDICAL PHYSICS INTERNATIONAL
... within traditional CT workflow. The evolution to more advanced iterative reconstruction algorithms that utilize additional system information to enable further CT radiation dose reduction and image quality improvement is the next step in CT technology innovation. Although these more advanced algorit ...
... within traditional CT workflow. The evolution to more advanced iterative reconstruction algorithms that utilize additional system information to enable further CT radiation dose reduction and image quality improvement is the next step in CT technology innovation. Although these more advanced algorit ...
2011 Mammography Facility Survey - Metropolitan Chicago Breast
... 1. How many hours is you facility performing breast imaging from Monday-Friday? _________ 2. How many hours is your facility performing breast imaging on the weekend? _________ 3. How many analog (film screen) mammography machines are in operation? _________ 4. How many digital mammography machines ...
... 1. How many hours is you facility performing breast imaging from Monday-Friday? _________ 2. How many hours is your facility performing breast imaging on the weekend? _________ 3. How many analog (film screen) mammography machines are in operation? _________ 4. How many digital mammography machines ...
How do referring clinicians want radiologists to report? Suggestions
... were used in the surveys. The survey was locally approved by the participating hospitals. The investigators did not seek external funding for this project. The medical director of each hospital sent an e-mail to all clinical specialists who routinely prescribe imaging examinations to invite them to ...
... were used in the surveys. The survey was locally approved by the participating hospitals. The investigators did not seek external funding for this project. The medical director of each hospital sent an e-mail to all clinical specialists who routinely prescribe imaging examinations to invite them to ...
Powerfrequency EMFs and Health Risks - 5. MRI
... examining tissue composed of elements of a relatively higher atomic number than the tissue surrounding them, such as bone and calcifications (calcium based) within the body (carbon based flesh), or of structures (vessels, bowel). MRI, on the other hand, uses radio frequency signals to acquire its im ...
... examining tissue composed of elements of a relatively higher atomic number than the tissue surrounding them, such as bone and calcifications (calcium based) within the body (carbon based flesh), or of structures (vessels, bowel). MRI, on the other hand, uses radio frequency signals to acquire its im ...
USPIO-enhanced magnetic resonance imaging for nodal staging in
... a fact that accounts for the unsatisfactory performance of the current imaging techniques (8,9). MRI can be improved when using contrast agents suited for intravenous MR lymphography, such as the new ultrasmall superparamagnetic iron oxide (USPIO) particles, which are taken up by cells of the reticu ...
... a fact that accounts for the unsatisfactory performance of the current imaging techniques (8,9). MRI can be improved when using contrast agents suited for intravenous MR lymphography, such as the new ultrasmall superparamagnetic iron oxide (USPIO) particles, which are taken up by cells of the reticu ...
Development and testing of extra-cranial tumour tracking
... window. The most efficient motion compensation strategy for accurate dose delivery with continuous irradiation in free-breathing conditions is real-time tumour targeting, based on the dynamic repositioning of the radiation beam according to the instantaneous target position. Motioncorrelated dose de ...
... window. The most efficient motion compensation strategy for accurate dose delivery with continuous irradiation in free-breathing conditions is real-time tumour targeting, based on the dynamic repositioning of the radiation beam according to the instantaneous target position. Motioncorrelated dose de ...
Comparison of Analytic and Algebraic Methods for Motion
... according to their position in the respiratory cycle, which is supposed to be periodic during acquisition [4]–[7]. Each group of CB projections corresponds to a given phase of the cycle and is used to reconstruct the 3-D CT image of the phase, thus obtaining a 4-D CT image. The efficiency of respira ...
... according to their position in the respiratory cycle, which is supposed to be periodic during acquisition [4]–[7]. Each group of CB projections corresponds to a given phase of the cycle and is used to reconstruct the 3-D CT image of the phase, thus obtaining a 4-D CT image. The efficiency of respira ...
Cardiac Image Registration
... Long procedure time and somewhat suboptimal results hinder the widespread use of catheter ablation of complex arrhythmias such as atrial fibrillation (AF). Due to lack of contrast differentiation between the area of interest and surrounding structures in a moving organ like heart, there is a lack of ...
... Long procedure time and somewhat suboptimal results hinder the widespread use of catheter ablation of complex arrhythmias such as atrial fibrillation (AF). Due to lack of contrast differentiation between the area of interest and surrounding structures in a moving organ like heart, there is a lack of ...
Overview of the DICOM Standard - VCL
... while avoiding possible confusion caused by multiple files for the same study. Keywords - DICOM, Medical Imaging, Mammography 1. INTRODUCTION During the last thirty years there has been a large development of digital technology. Computers have entered almost every aspect of our lives, so naturally t ...
... while avoiding possible confusion caused by multiple files for the same study. Keywords - DICOM, Medical Imaging, Mammography 1. INTRODUCTION During the last thirty years there has been a large development of digital technology. Computers have entered almost every aspect of our lives, so naturally t ...
Chapter 24
... This view shows the external auditory canal, the eustachian tube, the middle ear with the incus and the head of the malleus, the mastoid air cells, the styloid process, the internal auditory canal, and petrous apex. It also shows such structures of the base of the skull as foramen ovale, foramen spi ...
... This view shows the external auditory canal, the eustachian tube, the middle ear with the incus and the head of the malleus, the mastoid air cells, the styloid process, the internal auditory canal, and petrous apex. It also shows such structures of the base of the skull as foramen ovale, foramen spi ...
Quantifying image quality in diagnostic radiology using
... Energy imparted per unit area from primary photons Energy imparted per unit area from scattered photons Mean energy imparted per primary photon ...
... Energy imparted per unit area from primary photons Energy imparted per unit area from scattered photons Mean energy imparted per primary photon ...
Imaging of facial nerve schwannomas: diagnostic pearls and
... at the IAC and the GG (Fig. 7). Occasionally, the GG component of a dumbbell-shaped FNS erodes into the cochlea and thus mimics a transmodiolar acoustic schwannoma. However, unlike FNS, a transmodiolar schwannoma expands the cochlear nerve canal but not the FN canal (11). The GG fossa is the most co ...
... at the IAC and the GG (Fig. 7). Occasionally, the GG component of a dumbbell-shaped FNS erodes into the cochlea and thus mimics a transmodiolar acoustic schwannoma. However, unlike FNS, a transmodiolar schwannoma expands the cochlear nerve canal but not the FN canal (11). The GG fossa is the most co ...
Magnetic Resonance Properties of Hydrogen
... Subjects and Methods With permi ss ion fro m th e Ethi ca l Committee of th e Royal Postgrad uate Med ica l Schoo l, five norm al volunteers aged 27 -63sea rs (three male, two fe male) we re scanned . All examinations co nform ed to th e g ui delines p rov ided by th e Nati onal Rad iolog ical Prote ...
... Subjects and Methods With permi ss ion fro m th e Ethi ca l Committee of th e Royal Postgrad uate Med ica l Schoo l, five norm al volunteers aged 27 -63sea rs (three male, two fe male) we re scanned . All examinations co nform ed to th e g ui delines p rov ided by th e Nati onal Rad iolog ical Prote ...
CliniCal signifiCanCe of signal Changes in the quadratus feMoris
... Objectives: To evaluate the clinical significance of quadratus femoris muscle signal changes (QFMC) on MRI. Methods: 204 consecutive bilateral MRI hip examinations (132 female, 72 male) were reviewed in retrospect for QFMC. Inclusion imaging parameters were edema or atrophy of the quadratus femoris ...
... Objectives: To evaluate the clinical significance of quadratus femoris muscle signal changes (QFMC) on MRI. Methods: 204 consecutive bilateral MRI hip examinations (132 female, 72 male) were reviewed in retrospect for QFMC. Inclusion imaging parameters were edema or atrophy of the quadratus femoris ...
Trans-esophageal & Intra-cardiac Echocardiography
... Devices they carry, along with a clear depiction of the positions in relation to other cardiac structures ...
... Devices they carry, along with a clear depiction of the positions in relation to other cardiac structures ...
W(h)ither human cardiac and body magnetic resonance at ultrahigh
... gamut from technical advances to clinical opportunities. Key concepts, emerging technologies, practical considerations, frontier applications and future directions of UHF body and cardiac MR are provided. Examples of UHF cardiac and body imaging strategies are demonstrated. Their added value over th ...
... gamut from technical advances to clinical opportunities. Key concepts, emerging technologies, practical considerations, frontier applications and future directions of UHF body and cardiac MR are provided. Examples of UHF cardiac and body imaging strategies are demonstrated. Their added value over th ...
Lower Extremity Trauma: An Atlas of Radiologic Findings of ACL Injury
... Arthroscopic reconstruction is the definitive treatment Torn ligament is replaced with tissue graft, which is often taken from either the patellar tendon, hamstring tendons, or quadriceps tendon Post-surgical rehab is critical, and usually last 6+ months ...
... Arthroscopic reconstruction is the definitive treatment Torn ligament is replaced with tissue graft, which is often taken from either the patellar tendon, hamstring tendons, or quadriceps tendon Post-surgical rehab is critical, and usually last 6+ months ...
A New Approach for the Enhancement of Dual
... information lies in the difference between two low and high energy images, so that it is difficult to acquire the accurate spectral information due to amplification of error or noise in the resulting difference images. In this work, a new model and a new technique for DECT image enhancement are prop ...
... information lies in the difference between two low and high energy images, so that it is difficult to acquire the accurate spectral information due to amplification of error or noise in the resulting difference images. In this work, a new model and a new technique for DECT image enhancement are prop ...