BACKGROUND A projection-based method of intrinsic cardiac gating in small-animal computed tomography imaging is presented. METHODS AND RESULTS In this method, which operates without external ECG monitoring, the gating reference signal is derived from the raw data of the computed tomography projections. After filtering, the derived gating reference signal is used to rearrange the projection im...

Flash ADC is an important component for realization of high speed and low power devices in signal processing system .As technology scale down, leakage current becomes the most concerned factor. This paper reports the power gating technique to provide the reduction mechanism for suppressing the leakage current effectively during standby mode but it introduces ground bounce noise. We designed a “...

Purpose: Continuous tumor position measurement coupled with a tumor tracking system would result in a highly accurate radiation therapy system. Previous internal position monitoring systems have been limited by fluoroscopic radiation dose and low delivery efficiency. We aimed to incorporate a continuous, electromagnetic, threedimensional position tracking system (Calypso 4D Localization System)...

In this paper, our rst purpose is to study the performance of gating network functions in a committee machine setting. The problem of image deblur-ring is used to test the capability of such a system. Input clustering divides the task of deblurring into several subtasks. Each subtask is performed by a projection pursuit learning network (PPLN) 1]. We use a dynamic gating structure to combine ou...

In the mammalian neocortex, an area typically receives inputs from, and projects to, dozens of other areas. Mechanisms are needed to flexibly route information to the right place at the right time, which we term 'pathway gating'. For instance, a region in your brain that receives signals from both visual and auditory pathways may want to 'gate in' the visual pathway while 'gating out' the audit...

During recent years, foundry industry has witnessed an increasing awareness about the importance of the filling stage for the production of metallurgically sound and dimensionally stable castings. The metallurgical soundness of a casting is strongly influenced by the way the liquid metal flows through various parts of the gating system and fills the mould cavity. Owing to the importance of fill...

A successful return in tennis requires a tennis player first to determine where best to place her return and then to correctly execute her swing. If she makes an errant return, she now faces a credit assignment problem: Should this negative outcome be attributed to poor shot selection or to an error in motor execution? McDougle et al. propose a solution to this problem when the source of the er...