Peder C. Pedersen

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Ultrasound imaging is a noninvasive technique well-suited for detecting abnormalities like cysts, lesions and blood clots. In order to use 3D ultrasound to visualize the size and shape of such abnormalities, effective boundary detection methods are needed. A robust boundary detection technique using a nearest neighbor map (NNM) and applicable to(More)
This work evaluates the feasibility of real-time wireless video streaming of medical ultrasound signals over 802.11g ad-hoc and 3G cellular broadband networks for disaster relief, rescue, and medical transport applications. Scalable H.264 encoded echocardiographic ultrasound image sequences were transmitted in real-time at specified image resolutions (VGA(More)
Diabetic foot ulcers represent a significant health issue. Currently, clinicians and nurses mainly base their wound assessment on visual examination of wound size and healing status, while the patients themselves seldom have an opportunity to play an active role. Hence, a more quantitative and cost-effective examination method that enables the patients and(More)
This work evaluates the feasibility of using 802.11 g ad hoc and 3G cellular broadband networks to wirelessly stream ultrasound video in real-time. Telemedicine ultrasound applications in events such as disaster relief and first-response triage can incorporate these technologies, enabling onsite medical personnel to receive assistance with diagnostic(More)
Angle-dependent spectral distortion (ASD) refers to the change in complex spectrum of the signal from the receiving transducer due to change in angular orientation of the reflecting target, i.e., from normal incidence to some non-normal incidence. The ASD for a fluid-fluid infinite planar interface (IP-ASD) is numerically determined for the cases of a(More)
An efficient algorithm to compute complex (magnitude and phase) acoustic pressure field data that uses a multirate digital processing architecture is presented. The algorithm is based on the discretization of the velocity potential function, sampled at a rate that varies as a function of field point location and transducer geometry. The algorithm can be(More)
This project, conducted within the framework of the European Union " s Civitas Mobilis, aims to develop an instrument capable of gathering data on passing motor boat traffic in a Venetian canal. The instrument uses neural networks to analyze the underwater sound produced by the boat engine, and thereby identify boat type. It is hoped that this data can be(More)
 All WPI undergraduate students complete three required projects, including a senior-level capstone design project that is equivalent in credit to three courses. Over 50% of WPI students complete at least one of their projects overseas at one of WPI's residential Project Centers located around the globe. Here, we describe two Project Centers— in Limerick,(More)