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Düşük kilovolt prospektif EKG-Gated Koroner BT angiografi ile
Düşük kilovolt prospektif EKG-Gated Koroner BT angiografi ile

... hypersensitivity reaction to iodinated contrast agent, history of coronary artery bypass grafting, recent intake of metformin, arrhythmia and pregnancy. Inclusion criteria were a body mass index (BMI) of less than 30 kg/m², HR≤90 beats per minute (bpm) could be achieved after the administration of b ...
A feasibility study of mutual information based setup error estimation
A feasibility study of mutual information based setup error estimation

... The goal of external beam radiotherapy is to irradiate a tumor to a high x-ray dose while sparing normal tissues as much as possible. To achieve this goal, the x-ray beam arrangement and the dose distribution are carefully planned based on the target tumor position within an individualized patient m ...
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... of patients to high or low risk categories in up to ...
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... discuss research within the department. During this discussion, the residents are informed of the American Board of Radiology’s requirement to provide documentation of a research effort. Detailed conversation focuses upon the many research opportunities within the department, and the residents are e ...
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... GE) every 0.3/0.5 ms, and multilayer "sandwich" detectors (Philips). Dual- and singlesource dual energy CT scanners are the most widely used scanners in research or clinical practice. In all cases, dual energy CT scanner enables acquisition of two data sets, one at high (140kVp) and one at low energ ...
CT for Pediatric, Acute, Minor Head Trauma
CT for Pediatric, Acute, Minor Head Trauma

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... classroom and clinical experiences in preparation for an exciting career in imaging. For more than 70 years, the program has educated women and men who have continued to serve in every field of radiologic imaging, both here at Reading Hospital and in locations across the nation. A Rewarding Career T ...
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see p. D49 - Viktor`s Notes for the Neurosurgery Resident

... normally enhancing structures – see D45 p. no focal white matter low densities should be seen in young or middle-age patients. – in patients > 65 yrs. mild periventricular hypodensities are part of normal aging process. ventricles: mild differences in sizes of bodies, frontal, temporal, and occipita ...
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CT Protocol Selection in PET-CT Imaging

... region of interest may differ from the conventional PET “skull base-to-mid-thigh” tumor imaging. Often the diagnostic CT study requires a limited field-of-view (for example chest only), which is a subset of the PET study. In these situations, the higher technique CT study could be performed over onl ...
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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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