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6456-Review - F6 Publishing Home
6456-Review - F6 Publishing Home

... that measures tissue elasticity in real time using a dedicated probe and system. A number of recent investigations have shown promising results of EUS elastography for diagnosing pancreatic focal lesions[46-49]. Magnetic resonance imaging Over the past few years, MRI scanners and imaging techniques ...
Accuracy of Contrast-Enhanced Magnetic Resonance Imaging in
Accuracy of Contrast-Enhanced Magnetic Resonance Imaging in

... acute myocardial infarction (MI) and a pattern of hyperenhancement late after contrast injection. Because the significance of these CE patterns for myocardial viability remains debated, we evaluated their diagnostic accuracy to quantitatively predict late functional improvement of regional contracti ...
Evaluation of Parotid Gland Function using Equivalent - J
Evaluation of Parotid Gland Function using Equivalent - J

... Safe imaging modalities are needed for evaluating parotid gland function. The aim of this study was to validate the utility of a magnetic resonance imaging (MRI) tool, equivalent cross-relaxation rate imaging (ECRI), as a measurement of parotid gland function after chemoradiotherapy. Subjects compri ...
An Exposure Indicator for Digital Radiography Report of AAPM Task
An Exposure Indicator for Digital Radiography Report of AAPM Task

... independent of the amount of exposure used to acquire the digital image. The characterization of a digital radiographic system as being in a given speed class may give the false indication that it should always be operated at a specific exposure level. It may also give the false impression that the ...
Progeny Vantage Panoramic X-ray System
Progeny Vantage Panoramic X-ray System

... Do not stare into the beam. Do not place eyes closer than 100 mm. This equipment contains class 2 lasers of 3 mW output at 650 nm. The beam is a 40° fan line. The lensing on the laser is not removable. Laser on time does not ...
PACS: Then and Now (… and Tomorrow !)
PACS: Then and Now (… and Tomorrow !)

... and Communications Systems (PACS) and Related Devices (8/93) ...
Update and review on the basics of brachial plexus imaging
Update and review on the basics of brachial plexus imaging

... therapy [6-7], and infections or other inflammatory process [8-9]. dorsal nerve roots (sensory), and from the cells in the basal plates Thoracic outlet syndrome (TOS) is a broad term that refers of the developing spinal cord, which form the ventral nerve to entrapment and compression of the brachial ...
Validation of experts versus atlas-based and
Validation of experts versus atlas-based and

... the expert: intra-surgeon variability and the mean target point coordinates for each STN which will be used as a real target coordinates. In order to evaluate the repeatability of the neurosurgeon targeting, we have proceeded in different manners. First we have computed, for each STN, the Euclidean ...
AIUM Practice Guideline for the Performance of the Musculoskeletal
AIUM Practice Guideline for the Performance of the Musculoskeletal

... the forearm in supination and resting on the thigh or with the arm in slight external rotation. The tendon is examined in a transverse plane (short axis), where it emerges from under the acromion, to the musculotendinous junction distally. Longitudinal views (long axis) should also be obtained. Thes ...
Imaging of knee injuries with special focus on tibial plateau
Imaging of knee injuries with special focus on tibial plateau

... are often difficult to obtain, and in those patients, radiography is unreliable to rule out fractures. Study II showed that MDCT can serve to evaluate cruciate ligaments as well. MDCT detected intact cruciate ligaments with good specificity, accuracy, and negative predictive value, but the assessme ...
Detection of Degenerative Change in Lateral Projection Cervical
Detection of Degenerative Change in Lateral Projection Cervical

... spine, due to is widespread availability, and low cost. Additional exams including computed tomography (CT), magnetic resonance (MR), and electromyography are also possible. In a lateral radiograph, degenerative changes often appear as vertebral bodies with poor edge definition and limited spacing b ...
Efficacy of Feraheme as a Lymphatic Contrast Agent in Prostate
Efficacy of Feraheme as a Lymphatic Contrast Agent in Prostate

... Fig. 3 demonstrates complete and homogeneous suppression of the lymph node on T2* sequencing after Feraheme administration. This corresponds to normal uptake of the Feraheme by the lymph node. ...
Ms - F6 Publishing Home
Ms - F6 Publishing Home

... Over the past few years, MRI scanners and imaging techniques have become more sophisticated, resulting in improvements in both imaging quality and diagnostic accuracy. Therefore, MRI with MRCP is currently used as a problem-solving tool for patients with pancreatic disease[50]. Given the greater sof ...
Improvement of gadoxetate arterial phase capture with a high spatio
Improvement of gadoxetate arterial phase capture with a high spatio

... high STR multiphase and the conventional acquisitions (percent of imaged phases in the conventional group with fat–water swapping was 14% with a 95% CI of 3–25%, and for the high STR multiphase group the percentage of phases imaged with fat–water swapping was 13% with a 95% confidence interval of 9– ...
dynamic contrast-enhanced breast mri - Stacks
dynamic contrast-enhanced breast mri - Stacks

... thank them for their keeping encouraging me and sharing many thoughts about life balance. In particular, Tammy Kim, Bomi Nam, and I attended the same high school and college, and came to the States within one after another within one year, and we are still hanging out frequently in the Bay area. I a ...
Criteria for Acceptability of Medical Radiological Equipment used in
Criteria for Acceptability of Medical Radiological Equipment used in

... To achieve the objectives of RP 162, the development and review process has involved a wide range of individuals and organizations, including experts from relevant professions, professional bodies, industry, standards organizations and international organizations. It was easier to achieve the last o ...
Tissue Doppler Imaging: Myocardial Velocities and Strain
Tissue Doppler Imaging: Myocardial Velocities and Strain

... systolic velocities at peak stress in abnormal than in normal segments (3.1 ± 1.2 cm/s vs. 7.2 ± 1.9 cm/s). However, in apical abnormal segments the velocity response could not be distinguished from normal controls. A peak stress velocity response of ≤ 5.5 cm/s was useful in identifying abnormal seg ...
MiniMedSchool_Imagin..
MiniMedSchool_Imagin..

... Two weeks later, he took an x-ray of his wife’s hand Immediately used to as a diagnostic tool Also used as a research tool Also used as a new “picture” device Changed medicine forever! ...
From A as in Aliasing to Z as in Zipper: Artifacts in MRI
From A as in Aliasing to Z as in Zipper: Artifacts in MRI

... have often been the basis for development of new MR techniques: the knowledge of image disturbances can be used to specifically sensitize MR techniques to monitor morphology, function or metabolism. Artifacts can be categorized in several ways. One way is to categorize them by the kind of signal con ...
acr aapm siim practice parameter for determinants of image quality
acr aapm siim practice parameter for determinants of image quality

... image detector during the exposure. The effects of spatial resolution on clinical image quality are most easily observed when imaging fine detail in the breast such as spiculations radiating from a mass or microcalcifications. Detection, shape, and margins help differentiate a benign from a malignan ...
SPECT in Acute Pulmonary Embolism
SPECT in Acute Pulmonary Embolism

... and the exclusion of PE required no mismatched perfusion defects. Planar V/Q scans were obtained in only 4 views. 99mTc-diethylenetriaminepentaacetate (DTPA) was used for the ventilation scans. Collart et al. showed the same sensitivity with SPECT perfusion imaging and planar V/Q imaging, 12 of 15 ( ...
mari partanen application of diffusion
mari partanen application of diffusion

... Magnetic resonance imaging (MRI) is one of the most important imaging modalities in today’s modern world. It has high contrast sensitivity to soft tissue differences and the use of nonionizing radiation makes it safe to use. MRI is based on nuclear magnetic moment of the hydrogen nuclei (protons). [ ...
Intracranial Demyelinating Pseudotumor: A Case Report and
Intracranial Demyelinating Pseudotumor: A Case Report and

... demyelinating pseudotumor in a patient whose condition was initially misdiagnosed as an astrocytoma. Based on the literature and our case, we formulated an outline for the differential diagnosis of demyelinating pseudotumor and astrocytoma. A timely and correct diagnosis of demyelinating pseudotumor ...
Muscular Dystrophies: What the radiologist should know
Muscular Dystrophies: What the radiologist should know

... –! typically T1W, axial images only –! to improve efficiency, a limited number of selected slices ...
Imag - University of Cincinnati College of Medicine
Imag - University of Cincinnati College of Medicine

... This issue of Imaging Matters features RSNA 2012. Numerous UC radiologists and trainees made presentations at the conference in Chicago, and two received major career awards. Once again, several UC Radiologists were named in the Top Doctors surveys conducted by two local magazines. I’m also very ple ...
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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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