The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Monte Carlo techniques have been used to study and optimize a two-dimensional detector array system for high-resolution positron emission tomography (PET) that consists of an 8*4 matrix of BGO crystals coupled to four photomultipliers. This allows dense packing of small scintillation crystals and their optical coupling to a smaller number of photomultiplier tubes. The design included optimizing the...
The author provides a review of the subjects of positron emission tomography (PET) and magnetic resonance imaging (MRI) cardiac imaging. The physics behind both types of systems is examined, followed by a summary of the topics, and typical papers, regarding each system. A list of references obtained regarding the correlation of the different imaging modalities is provided.<<ETX>>
Digitized X-ray angiograms of the left ventricle were clustered using a weighted Euclidean distance criterion with the constraint that the pixels in a cluster are spatially coherent. A three-dimensional feature space was used: position along x and y coordinates and image intensity. The spatial coherence constraint is based upon the belief that pixels within a cluster should be coherent in a spatial...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.