The performance of most—if not all—gamma cameras on the market is satisfactory for static imag ing at low count rates. CT scanning, however, will reduce the need for such static studies, with bone scintigraphy as one of the few possible exceptions. In the future the main load will lie on dynamic func tional studies. Many such procedures—in particu lar radiospirometry, radiocardiography an...

UNLABELLED A high-sensitivity, high-resolution brain PET scanner ("G-PET") has been developed. This scanner is similar in geometry to a previous brain scanner developed at the University of Pennsylvania, the HEAD Penn-PET, but the detector technology and electronics have been improved to achieve enhanced performance. METHODS This scanner has a detector ring diameter of 42.0 cm with a patient ...

The performance evaluation of an obstacle detection and segmentation algorithm for Automated Guided Vehicle (AGV) navigation in factory-like environments using a 3D real-time range camera is the subject of this paper. Our approach has been tested successfully on British safety standard recommended object sizes and materials placed on the vehicle path. The segmented (mapped) obstacles are then v...

High-speed atomic force microscopy has attracted much attention due to its unique capability of visualizing nanoscale dynamic processes at a solid/liquid interface. However, its usability and resolution have yet to be improved. As one of the solutions for this issue, here we present a design of a high-speed Z-tip scanner with screw holding mechanism. We perform detailed comparison between desig...

Many researchers have shown the ability of X-ray computer tomography (CT) of acquiring knowledge about the internal structure of logs. Contrarily to medical CT scanners, industrial CT scanners should satisfy more extreme constraints (in terms of speed, duty cycle, radiation safety, reconstruction circle and aperture size) in order to be used in a sawmill environment. All these factors lower the...