Neuroscience and Biomedical Engineering (Discontinued) - Volume 5, Issue 1, 2017

Background: To make such a large-scale digital PET, we are mainly facing the following technical challenges. First of all, the number of nodes in a large-scale digital PET is generally more than hundreds, how to manage them? When the hundreds of nodes are queried or configured or monitored at the same time, there will always be a high concurrency of data transmission, how to ensure the real-time of communicatio Read More

Objective: To minimize the risk inherent to the use of medical radiation and robotic radiosurgery, this research introduced the basis and method of beam commissioning data acquisition for the Iris variable aperture collimator of CyberKnife VSI. Methods: In this study, clinical dosimetry measurements of the Iris collimator such as tissue-phantom ratios (TPRs), off-center ratios (OCRs), and secondary collimator output fact Read More

Background: To make such a large-scale digital PET, we are mainly facing the following technical challenges. First of all, the number of nodes in a large-scale digital PET is generally more than hundreds, how to manage them? When the hundreds of nodes are queried or configured or monitored at the same time, there will always be a high concurrency of data transmission, how to ensure the real-time of communicatio Read More

Introduction: This paper presents a software-based data acquisition and processing unit (DAPU) architecture for an all-digital positron emission tomography (PET) system based on 352 LYSO/ SiPM detectors with local digitization. By obtaining raw data directly from individual detector via 10-Gigabit Ethernet in UDP protocol, a self-adapting calibration method for PET is proposed. The architecture is designed to be scalable acr Read More

Purpose: To study the beam characteristics of CyberKnife system, especially the features in standardization and calibration of small-field dosimetry under non-standard condition, this research utilized Monte Carlo method to simulate the transporting process of beams in G4 CyberKnife and compared the results with the outcomes of actual measurement so that the accuracy of the established model can be verified. Material Read More

Background: Principle A of the Government and Binding Theory (Norm Chomsky, 1981, 1986) prescribes that a reflexive should refer to the local (short-distance) antecedent within the local syntactic domain. However, the Chinese bare reflexive “ziji” does not accord with Principle A. “Ziji” can refer to a local or long-distance antecedent, directly determined by context (co-text). Objective: The present study aims to explore when Read More

Background: The cone beam computed tomography (CBCT), as a non-destructive tool, provides a fast and convenient method for clinicians to diagnose related diseases. Even though some debates still exist among researchers, some studies have demonstrated the feasibility of bone mineral density measurement using CBCT images. Periodontal disease is one of the most common oral diseases. Accurate assessment Read More

Background: Disability can be defined as a condition that may limit an individual's ability to use a particular limb or part of the body. Disability in the lower limb may be the consequence of a stroke, an accident, infection or can be congenital. This results in increased or total inability to perform everyday tasks. Rehabilitation procedures aim to help patients regain control of their everyday tasks with short-term intervention or life- Read More

Background: Various kinds of rule induction methods have been proposed, such as induction from decision trees, decision lists, and the AQ family. Several symbolic inductive learning methods have been proposed, such as the induction of decision trees [1, 2, 3], and the AQ family [4, 5, 6]. These methods and many variants initially introduced in the 1980s and 1990s are useful for finding frequent patterns from databases. H Read More

Background: Neuroimaging techniques with high spatio-temporal resolution would are crucial for the advancement in brain research, improvement of clinical diagnosis and management of neuropsychiatric disorders. Functional MRI (fMRI) is characterized by its high spatial resolution. On the other hand, the techniques measuring electromagnetic features of neurons, such as electroencephalography (EEG), provide millisecond Read More

Background: If human touch an object, even if they are blindfolded, they can reliably perceive its properties, such as temperature, material, length, height, texture and so on. In this study, we focused on investigating length perception, because length perception was an essential factor of object perception. Objective and Methods: 15 young and 15 old subjects participated in this experiment. They were blindfolded during experim Read More

Background: Pain is a common and troublesome non-motor symptom in Parkinson's disease (PD). Similarly, severe postoperative pain is common after major spinal surgery and may become chronic. The pathophysiologic mechanism underlying those conditions remains unclear. In this study, we recorded pain-related evoked potentials induced by intra-epidermal electrical stimulation in patients with PD and patients with persist Read More