)a cylindrical wooden container with slightly bulging sides.The American Heritage® Stedman's Medical Dictionary 3. in nuclear medicine, the use of a perforated absorber to restrict the field of view of a detector and reduce scatter.
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How to use collimate in a sentence. This article describes the principles and evolution of multislice CT (MSCT), including conceptual differences associated with slice definition, cone beam effects, helical pitch, and helical scan technique.
Published by Houghton Mifflin Company.The process of restricting and confining an x-ray beam to a given area.In nuclear medicine, the process of restricting the detection of emitted radiations to a given area of interest. Collimation definition at Dictionary.com, a free online dictionary with pronunciation, synonyms and translation. The original single-slice scanners had one row of detectors. Illustration of the helical CT scan. CT Scanner An implementation of dynamic or adap-tive section collimation was recently in-troduced on a newer 64-section CT scanner (Somatom Definition AS; Sie-mens Healthcare, Forchheim, Ger-many). Das Licht einer Punktquelle wird durch die Sammellinse in ein paralleles Strahlenbündel gewandelt. Technology Assessment Institute: Summit on CT Dose Collimation vs. Slice Width •Example of Impact on Scan Time –Thoracic CT •Siemens Sensation 16 –16 x 0.75 mm mode yields 12 mm beam width –For Pitch 1 and 0.5 sec rotation time •Table Feed = (12 mm * 1) = 12 mm/rotation •Table Speed = (12 mm/rot) / 0.5 sec/rot = 24 mm/sec This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional.https://medical-dictionary.thefreedictionary.com/collimationThe method, in radiology, of restricting and confining the x-ray beam to a given area and, in nuclear medicine, of restricting the detection of emitted radiations from a given area of interest. collimation: [ kol″ĭ-ma´shun ] 1. in microscopy, the process of making light rays parallel; the adjustment or alignment of optical axes. All dose simulations and measurements were performed for and with this scanner. What does collimation mean? Another example is the Siemens Definition Flash, which also utilizes a flying focal spot. The helical path of the beam is drawn in blue. Kollimation durch eine einfache Sammellinse. {"url":"/signup-modal-props.json?lang=us\u0026email="}{"containerId":"expandableQuestionsContainer","displayRelatedArticles":true,"displayNextQuestion":true,"displaySkipQuestion":true,"articleId":18984,"mcqUrl":"https://radiopaedia.org/articles/pitch-ct/questions/484?lang=us"}ADVERTISEMENT: Radiopaedia is free thanks to our supporters and advertisers. Meaning of collimation. MSCT Detectors. For example, if the table traveled 5 mm in one rotation and the beam collimation was 5 mm then pitch equals 5 mm / 5 mm = 1.0. collimare, abgewandelt von collineare: „in gerader Linie führen“) bezeichnet in der Optik die Parallelrichtung divergenter Lichtstrahlen.
1. Now all scanners are multi-slice and have 8-64 rows of detectors. To adjust the line of sight of (an optical device). A pitch of < 1.0 results in better image quality, but a higher patient dose. Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!Learn a new word every day. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Collimator . (Because you can. Die Kollimation (lat. Single slice CT (SSCT) The term detector pitch is used and is defined as table distance traveled in one 360° gantry rotation divided by beam collimation 2.. For example, if the table traveled 5 mm in one rotation and the beam collimation was 5 mm … Detector Array. Definition of collimation in the Definitions.net dictionary.