Advanced cone-beam CT venous angiographic imaging
نویسندگان
چکیده
منابع مشابه
Advanced single-slice rebinning for tilted spiral cone-beam CT.
Future medical CT scanners and today's micro CT scanners demand cone-beam reconstruction algorithms that are capable of reconstructing data acquired from a tilted spiral trajectory where the vector of rotation is not necessarily parallel to the vector of table increment. For the medical CT scanner this case of nonparallel object motion is met for nonzero gantry tilt: the table moves into a dire...
متن کاملAdvanced single-slice rebinning in cone-beam spiral CT.
To achieve higher volume coverage at improved z-resolution in computed tomography (CT), systems with a large number of detector rows are demanded. However, handling an increased number of detector rows, as compared to today's four-slice scanners, requires to accounting for the cone geometry of the beams. Many so-called cone-beam reconstruction algorithms have been proposed during the last decad...
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OBJECTIVE Meniscal injuries can lead to mechanical overloading of articular cartilage and eventually to knee osteoarthritis. The objective was to evaluate the potential of contrast enhanced computed tomography (CECT) to image contrast agent (CA) diffusion in human menisci with a clinical cone beam CT scanner. DESIGN Isolated human menisci (n = 26) were imaged using magnetic resonance imaging ...
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Panoramic and intraoral radiographs are the basic imaging modalities used in dentistry. Often they are the only imaging techniques required for delineation of dental anatomy or pathology. Panoramic radiography produces a single image of the maxilla, mandible, teeth, temporomandibular joints and maxillary sinuses. During the exposure the x-ray source and detector rotate synchronously around the ...
متن کاملHigh-Performance Soft-Tissue Imaging in Extremity Cone-Beam CT.
PURPOSE Clinical performance studies of an extremity cone-beam CT (CBCT) system indicate excellent bone visualization, but point to the need for improvement of soft-tissue image quality. To this end, a rapid Monte Carlo (MC) scatter correction is proposed, and Penalized Likelihood (PL) reconstruction is evaluated for noise management. METHODS The accelerated MC scatter correction involved fas...
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ژورنال
عنوان ژورنال: Journal of Neurosurgery
سال: 2018
ISSN: 0022-3085,1933-0693
DOI: 10.3171/2017.2.jns162997