eLearning

The electronics system for the LBNL Positron Emission Mammography (PEM) camera

W. W. Moses; J. W. Young; K. Baker; W. Jones; M. Lenox; M. H. Ho; M. Weng 2000 IEEE Nuclear Science Symposium. Conference Record (Cat. No.00CH37149), 2000

Summary form only received as follows: Describes the electronics for a high performance Positron Emission Mammography (PEM) camera. It is based on the electronics for a human brain PET camera (the Siemens/CTI HRRT), modified to use a detector module that incorporates a photodiode (PD) array. An ASIC services the PD array, amplifying its signal and identifying the crystal of interaction. ...

The Road to the Common PET/CT Detector

A. Nassalski; M. Moszynski; T. Szczesniak; D. Wolski; T. Batsch 2006 IEEE Nuclear Science Symposium Conference Record, 2006

Growing interest in the development of dual modality positron emission/X-rays tomography (PET/CT) systems prompts researchers to face a new challenge: to acquire both the anatomical and functional information in the same measurement, simultaneously using the same detection system and electronics. The aim of this work was to study a detector consisting of LaBr3, LSO or LYSO pixel crystals coupled to ...

Fermi's golden rule, nonequilibrium electron capture from the wetting layer, and the modulation response in P-doped quantum-dot lasers

D. G. Deppe; H. Huang IEEE Journal of Quantum Electronics, 2006

Electron capture from a quantum dot's (QDs) wetting layer is described by Fermi's golden rule that relates the transition rate to the density of final states. The wetting layer capture causes a brief nonequilibrium electron distribution between the QD ground state and its wetting layer states and can slow a QD laser's modulation response. This effect is studied for time ...

Real-Time Viewer for Positron Emission Mammography Guided Biopsy

Xiaohong Lu; Edward Anashkin; Christopher G. Matthews; Weidong Luo IEEE Transactions on Nuclear Science, 2010

PEM-guided biopsy is successful in localizing sub-centimeter lesions that cannot be seen by other modalities. To help the physician quickly visualize the position of an interventional device in relation to a lesion, we have developed a method to view PEM images in near real time, allowing visualization of lesion displacement within 30 seconds. Phantom and patient data were collected on ...

A high-performance VME-based acquisition system for positron emission mammography

D. J. Abbott; A. Weisenberger; S. Majewski; D. Kieper; B. Kross; V. Popov; R. Wojick 2001 IEEE Nuclear Science Symposium Conference Record (Cat. No.01CH37310), 2001

A prototype for a practical and economical breast imaging system for cancer detection is currently under development at Jefferson Lab. The latest advances in bright, fast, crystal scintillators, compact position-sensitive photomultipliers (PSPMT), and high-performance digitizing and readout electronics are being used to develop a compact imager based on Positron Emission Tomography (PET). To facilitate the performance demands of the detector ...

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