Multiple slot array collimator to minimize stray light in optical cone beam CT
نویسندگان
چکیده
منابع مشابه
A static multi‐slit collimator system for scatter reduction in cone‐beam CT
A multiple-slit collimator (MSC) design was introduced for scatter reduction in cone-beam computed tomography (CBCT). Unlike most other collimators, the open and closed septa of the proposed MSC are placed in an equi-angular interval on a circular track of the central sagittal plane. Therefore, one gantry rotation provides only the half of necessary dataset and two gantry rotations are needed t...
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Cone beam computed tomography (CBCT) is the modern third dimension applied in the field of oral maxillofacial region. With lower radiation dose compared to conventional CT, its applications in dentistry has increased tremendously. Artefacts can seriously degrade the quality of computed tomographic (CBCT) images, sometimes to the point of making them diagnostically unusable. To optimize image qu...
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The introduction of cone beam computed tomography into dentistry, and particularly into private offices, has raised a number of medicolegal issues. Among the issues raised are who may own and operate the machines, for what purposes should the machines be used, how broadly or narrowly should the field be collimated, does the full volume need to be interpreted and, if so, by whom? For images inte...
متن کاملPhysics (CT VI-Cone Beam CT)
Participants Kai Niu, MS, Madison, WI (Presenter) Nothing to Disclose Pengfei Yang, Shanghai, China (Abstract Co-Author) Nothing to Disclose Beverly A. Kienitz, MD, DDS, Madison, WI (Abstract Co-Author) Nothing to Disclose Ke Li, PhD, Madison, WI (Abstract Co-Author) Nothing to Disclose Sebastian Schafer, Madison, WI (Abstract Co-Author) Consultant, Siemens AG Kevin Royalty, PhD,MBA, Hoffman Es...
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A cone beam computed tomography (CBCT) scanner integrated with a linear accelerator is a powerful tool for image guided radiotherapy. Respiratory motion, however, induces artifacts in CBCT, while the respiratory correlated procedures, developed to reduce motion artifacts in axial and helical CT are not suitable for such CBCT scanners. We have developed an alternative respiratory correlated proc...
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ژورنال
عنوان ژورنال: Journal of Physics: Conference Series
سال: 2010
ISSN: 1742-6596
DOI: 10.1088/1742-6596/250/1/012062