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... corpus callosum. Debate of the relative merit of these baselines is therefore spurious. This finding also implies that sagittal localizer images need only to be able to demonstrate the corpus callosum, rather than the less conspicuous anterior commisure and quadrageminal plate. The baseline preferre ...
Scanning System, CT
Scanning System, CT

... CT scanners use slip-ring technology, which was introduced in 1989. Slip-ring scanners can perform helical CT scanning, in which the x-ray tube and detector rotate around the patient’s body, continuously acquiring data while the patient moves through the gantry. The acquired volume of data can be re ...
Evidenced Based Practice in Medical Imaging
Evidenced Based Practice in Medical Imaging

... of CT cases that have been published and makes recommendations based on the frequency that appendicitis has been diagnosed with this modality and recommends that certain types of patients are not well suited for this kind of exposure and expense. What type of EBP is this an example of for technologi ...
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... Increasing conversion efficiency -ability of intensifying screen phosphors to emit a large amount of light per x-ray absorption. ...
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... Features of the Siemens MAGNETOM Espree Pink 1.5T MRI The Siemens MAGNETOM Espree 1.5T MRI is the best selling Open-Bore MRI on the market. The Espree offers exceptional patient comfort, superior high-quality images, and seamless clinical workflow. The Espree provides extraordinary performance, pati ...
Distributed source x-ray tube technology for
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... resolution and the 3D depth information, with dose levels comparable to a 2D single mammogram. sDBT is the most prominent application of tomosynthesis. Conventional systems consist of a single moving x-ray tube. The tube is moving on an arc on a certain angular range (typically ~30-50º) around the i ...
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... Once it is determined how the tumor moves in relation to the waveform, gating thresholds can be set along the waveform to mark when the tumor is in the desired portion of the respiratory cycle. These thresholds determine when the automatic gating system turns the treatment beam on and off. Gating th ...
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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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