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European Commission. European guidelines on radiation protection
European Commission. European guidelines on radiation protection

... Directive 97/43/Euratom provides for a high level of health protection to ionising radiation in medical exposure. All the measures adopted in the Directive are concerned not only with avoiding unnecessary or excessive exposure to radiation but also with improving the quality and effectiveness of med ...
et al - IO
et al - IO

... chest without ulceration. • Asymptomatic, no treatment for chest wall. • Uneventful administration of Y90. • Skin erythema resolved, without consequences. ...
Artifacts in body MR imaging: their appearance and how to eliminate
Artifacts in body MR imaging: their appearance and how to eliminate

... Artifacts are often encountered during magnetic resonance (MR) imaging. They are defined as either any signal or void in the images that does not have an anatomic basis, or as the result of distortion, addition or deletion of information. Some of them are obvious and some are subtle. The latter may ...
Assessment of hepatic motion secondary to respiration for computer
Assessment of hepatic motion secondary to respiration for computer

... US offers the distinct advantage of real-time imaging capability without using ionizing radiation. It is, however, an inherently noncoordinate technology that does not lend itself to stereotactic localization of tissue.12 Although US does provide a visual display of the operative field, it is limite ...
Rt a wk 3 - El Camino College
Rt a wk 3 - El Camino College

... How does the “technique” What is it? How does it affect the “image” ...
Magnetic resonance imaging and ultrasound in hepatosplenic
Magnetic resonance imaging and ultrasound in hepatosplenic

... accentuation of periportal signal in T2-weighted sequences, and hypointense signal in relation to the normal liver parenchyma in T1weighted sequences with fat suppression. T1-weighted sequences showed accentuation of periportal signal after contrast administration. It has been suggested that the hyp ...
77 basic science temel bi̇lgi̇ler susceptibility
77 basic science temel bi̇lgi̇ler susceptibility

... On SWI filtered-phase images, diamagnetic calcification shows hypointense signal intensity opposite to the veins along the sulci which appear as hyperintensities. As imaging systems might differ in terms of their handedness, and as phase images might be not uniformly windowed by all manufacturers, a ...
A Shattered Face - Lieberman`s eRadiology
A Shattered Face - Lieberman`s eRadiology

... - Facial features are often obscured and distorted by endotracheal and gastric tubes and tapes that hold them in place. Thus, evaluation of facial instability is difficult - Response to painful stimuli is blunted. Thus, evaluation of localized pain secondary to fractures is difficult ...
ACR Practice Guideline for the Performance and Interpretation of
ACR Practice Guideline for the Performance and Interpretation of

... The American College of Radiology, with more than 30,000 members, is the principal organization of radiologists, radiation oncologists, and clinical medical physicists in the United States. The College is a nonprofit professional society whose primary purposes are to advance the science of radiology ...
brochure
brochure

... flexible modular system architecture allows Mediso to offer variety of models within the AnyScan® family. Owing to the modular build-up, the new AnyScan® is a flexible and variable system with easy combination of modalities.The system combinations may easily follow the needs of the NM-clinics or dep ...
BC Diagnostic Accreditation Program
BC Diagnostic Accreditation Program

... Institute of Medicine (U.S.) report released in 1999 – To Err is Human: Building a Safer Health System ...
RADIOGRAPHIC GRIDS
RADIOGRAPHIC GRIDS

... SOFT TSSUE STRUCTURES TO INCREASE CONTRAST STRUCTURES AFFECTED BY PATHOLOGICAL CONDITION THAT WOULD INCRESE SCATTER PRODUCTION ...
Upper Extremity Vein Mapping for Creation of a Dialysis Access or
Upper Extremity Vein Mapping for Creation of a Dialysis Access or

... B-mode gray scale imaging is used to assess the arm veins and in accordance with “Fistula First” a primary fistula would be a physician’s first choice for access for the patient if no previous access has been created. Secondary fistulae can also potentially be created in patients with prior access. ...
Generalized DQE analysis of radiographic and dual‐energy imaging
Generalized DQE analysis of radiographic and dual‐energy imaging

... the quantum noise, electronic noise, and anatomical noise in performance descriptors. 共Note that the term “generalized” here refers specifically to inclusion of anatomical background noise in the DQE.兲 Analysis of the generalized DQE offers an understanding of the physical factors limiting the detec ...
Detection of significant coronary artery disease by noninvasive
Detection of significant coronary artery disease by noninvasive

... Department (D.N., G. Todiere), Imaging Department (A.G., M.L.) and Technology Department (S.P., M. Mangione, P.M.), Fondazione Toscana G. Monasterio, Pisa, Italy; Heart Center (M.P.) and Turku PET Center (M.Mäki, J.K.), University of Turku and Turku University Hospital, Turku, Finland; Department of ...
x-ray imaging - Teledyne DALSA
x-ray imaging - Teledyne DALSA

... a reduced risk of complications and patient recovery costs, patients themselves enjoy early release from hospital and reduced postoperation complications and cosmetic consequences. During a minimally invasive procedure, surgeons rely on the use of fluoroscopic X-ray images for visual feedback to gui ...
An Atlas of the Pelvic Lymph Node Regions to Aid
An Atlas of the Pelvic Lymph Node Regions to Aid

... the draining lymph node regions. The pelvic lymph nodes, however, are difficult to delineate as most cannot be visualised on computed tomography or MRI, but still may contain metastases. Because of greater conformity in all dimensions, consistent and accurate target volume definition is particularly ...
Electromagnetic Tracking in the Clinical Environment:A
Electromagnetic Tracking in the Clinical Environment:A

... Tracking systems are a key component in image-guided interventions [1]. Of the several types of available systems, optical ones were the first to be widely adopted in the clinical environment, as they provide accurate measurements that are not significantly effected by environmental factors. These syst ...
A GUIDE TO THE TEACHING OF CLINICAL
A GUIDE TO THE TEACHING OF CLINICAL

... equipment, and personnel needed to provide a quality clinical radiological physics educational program. Although it is not possible to make detailed statements applicable to all programs, some general recommendations can be made. The didactic teaching of clinical radiological physics must be carried ...
Radiologic Science 1 Review
Radiologic Science 1 Review

... B. Require proper ionization chambers to be selected for part being radiographed C. Part being radiographed must be placed exactly over ionization chamber D. Varying kVp when using automatic exposure control (AEC) does not alter density, although contrast changes ( film screen, DR no change) E. Vary ...
Aquilion PRIME - Toshiba Medical Systems Europe
Aquilion PRIME - Toshiba Medical Systems Europe

... system with an 80-row detector capable of generating 160 slices per non-helical rotation using the coneXactTM reconstruction algorithm. Unlike techniques such as flying focal spot this method to double the number of slices does not increase unnecessary radiation exposure. With a consistent detector ...
Upright Open MRI Centres
Upright Open MRI Centres

... canal stenosis was seen in the seated extended position • In 50% (13/25) of these cases that had previously been investigated for sciatica, a surgically remediable lesion was found ...
Athens Euroclinic - Breast Centres Network
Athens Euroclinic - Breast Centres Network

... The Athens Euroclinic Breast Center is a model center of excellence that was established to offer comprehensive and quality healthcare services to women in the area of prevention, diagnosis and treatment of breast conditions. Staffed by specialized scientists from all related medical specialties and ...
Near infrared fluorescent imaging after intravenous injection of
Near infrared fluorescent imaging after intravenous injection of

... ICG to bind head and neck tumoral tissue after i.v. injection. The optimal timing for surgery was found to be between 30 minutes and 2 hours after i.v. injection. In line with this result, we decided to perform the injection at the induction time of the anesthesia. In our series, 2 patients underwen ...
PET Tracers and Radiochemistry - ANNALS Academy of Medicine
PET Tracers and Radiochemistry - ANNALS Academy of Medicine

... be synthesised and imaged within a time frame compatible with the half-life of the isotope. For C-11, this typically amounts to about 10 minutes for isotope production, 40 minutes for radiotracer synthesis and up to about 90 minutes for PET imaging. Thus, the entire study must be orchestrated and ca ...
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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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