Control algorithms for dynamic attenuators

Purpose: The authors describe algorithms to control dynamic attenuators in CT and compare their performance using simulated scans. Dynamic attenuators are prepatient beam shaping filters that modulate the distribution of x-ray fluence incident on the patient on a view-by-view basis. These attenuator...

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Vydané v:	Medical physics (Lancaster) Ročník 41; číslo 6; s. 61907 - n/a
Hlavní autori:	Hsieh, Scott S., Pelc, Norbert J.
Médium:	Journal Article
Jazyk:	English
Vydavateľské údaje:	United States American Association of Physicists in Medicine 01.06.2014
Predmet:	ABDOMEN ALGORITHMS ANATOMY attenuators BEAM SHAPING Biological material, e.g. blood, urine; Haemocytometers CHEST computational complexity Computed tomography Computer Simulation Computerised tomographs computerised tomography DEGREES OF FREEDOM DOSE LIMITS dose reduction dosimetry Dosimetry/exposure assessment dynamic attenuators dynamic bowtie Equipment Design FILTERS fluence field modulation Humans Illumination Image reconstruction medical control systems Medical image noise MINIMIZATION Models, Theoretical Optimization Photons piecewise linear techniques Radiation Dosage RADIATION DOSES Radiation Imaging Physics RADIATION PROTECTION AND DOSIMETRY Radiography, Abdominal - instrumentation Radiography, Abdominal - methods Radiography, Thoracic - instrumentation Radiography, Thoracic - methods Scintigraphy Tissues Tomography, X-Ray Computed - instrumentation Tomography, X-Ray Computed - methods dose reduction dynamic bowtie fluence field modulation dynamic attenuators
ISSN:	0094-2405, 2473-4209, 2473-4209, 0094-2405
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