RADIATION IMAGING APPARATUS AND IMAGING CONTROL DEVICE

A motor controller determines a drive speed of a motor for driving a filter such that an area shifting cycle of the filter synchronizes with a cardiac cycle. The filter starts to rotate before radiation emission, and continues to rotate at a constant speed during two successive radiation emissions....

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Bibliographische Detailangaben
1. Verfasser:	SENDAI TOMONARI
Format:	Patent
Sprache:	eng
Schlagworte:	DIAGNOSIS ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY GAMMA RAY OR X-RAY MICROSCOPES HUMAN NECESSITIES HYGIENE IDENTIFICATION INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES IRRADIATION DEVICES MEASURING MEDICAL OR VETERINARY SCIENCE NUCLEAR ENGINEERING NUCLEAR PHYSICS PHYSICS SURGERY TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOTOTHERWISE PROVIDED FOR TESTING X-RAY TECHNIQUE
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Beschreibung
Zusammenfassung:	A motor controller determines a drive speed of a motor for driving a filter such that an area shifting cycle of the filter synchronizes with a cardiac cycle. The filter starts to rotate before radiation emission, and continues to rotate at a constant speed during two successive radiation emissions. An emission controller controls timing of two emissions in accordance with a phase of the filter. The area shifting cycle of the filter and the cardiac cycle are previously synchronized, and thus a high-performance filter switching device for switching or shifting the filter in synchronization with the emission timing becomes unnecessary. Adjusting the area shifting cycle of the filter in accordance with the cardiac cycle realizes two radiation emissions in two successive cardiac cycles. As a result, an exposure time is shortened.