Numerical simulation based on finite element method is conducted to predict the location of pitting corrosion in reinforced concrete. Simulation results show that it is feasible to predict corrosion monitoring based on ultrasonic guided wave in reinforced concrete, and wavelet analysis can be used for the extremely weak signal of guided waves due to energy leaking into concrete. The characteris...

Inaccuracies in intraoperative tumor localization and evaluation of surgical margin status result in suboptimal outcome of breast-conserving surgery (BCS). Optical imaging, in particular near-infrared fluorescence (NIRF) imaging, might reduce the frequency of positive surgical margins following BCS by providing the surgeon with a tool for pre- and intraoperative tumor localization in real-time....

This paper presents an effective parameter for fatigue delamination detection and monitoring by guided wave method. The finite element analysis and the Time of Flight parameter defined as a time between guided wave interrogated by an actuator and first wave captured by a sensor was introduced to observe the behaviour of the defected structure. The relationship between ToF and delamination size ...

Background: Nonpalpable breast lesions require localization, the gold standard for which is preoperative ultrasound-guided wire localization (PUGWL). Our unit also employs intraoperative (IUGWL). Here we evaluate PUGWL and IUGWL outcomes between 2014 2018. Primary were reoperation rates, complication rates average specimen weights. Trainee feedback cost analysis assessed viability. Methods: Pro...

Radiation therapy has an important role in the treatment of locally advanced or metastatic pancreatic cancer and can be used alone or in conjunction with surgery and/or systemic chemotherapy. Because of the challenge of delivering an accurate and optimal radiation dose, image-guided radiation therapy can be used to improve targeting. Fiducial markers can be placed in the tumor and used for loca...

Image-guided procedures, such as computed tomography (CT)-guided stereotactic and ultrasound-guided methods, can assist neurosurgeons in localizing the relevant pathology. The characteristics of image-guided procedures are important for their appropriate use, especially in brain biopsy. This study reviewed the results of various image-guided brain biopsies to ascertain the advantages and disadv...

The use of numerical and phased array techniques to focus guided waves and perform inspection of plates and pipes has not been widely used; it represents an interesting solution for defect detection and localization. In addition, imaging of ultrasonic guided wave results using color coded B-Scans is also considered a highly valuable tool for data interpretation. While commercial ultrasonic phas...

The mobile payment market is currently under transition with a history of numerous tried and failed solutions and a future of promising but yet uncertain possibilities with contactless RFID and other new potential technologies. At this point of the development we take a look at the current state of the mobile payment market, review prior literature on mobile payment services, analyze the differ...

Localization and navigation technology is one of the key technologies for Automated Guided Vehicle (AGV). In this paper we develop an AGV navigation system utilizing commercial Bluetooth GPS. WGS-84 coordinates system is converted to space rectangular coordinate system, which is combined with orientation information, initial position and gesture of AGV can be determined. Experimental result sho...