Search Results - lars+furenlid

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A Gamma-ray Photon Counting Detector Based on Side-readout of Monolithic Scintillator Layers
Researchers at the University of Arizona have developed a gamma-ray photon counting device that works similarly to PET, but with a novel architecture that improves the accuracy and speed in determining the location of the biological targets, and is less costly to manufacture. Background: Positron Emission Tomography (PET) is a common and reliable...
Published: 1/18/2023   |   Inventor(s): Lars Furenlid, Xin Li
Keywords(s):  
Category(s): Technology Classifications > Imaging & Optics, Technology Classifications > Imaging & Optics > Medical Imaging, Technology Classifications > Imaging & Optics > Sensors and Detection
A Lower X-Ray Dose, Higher Resolution, Photon-Counting System for Computed Tomography
This technology is an X-ray or Gamma ray imaging system that uses photon-counting to achieve high resolution images with lower radiation doses than traditional machines. The system combines upfront optical gain with high-speed CCD or CMOS detectors to capture images. Then, using Maximum Likelihood Estimation (MLE) techniques to parse the image data,...
Published: 7/15/2022   |   Inventor(s): Harrison Barrett, H. Bradford Barber, Lars Furenlid, Brian Miller
Keywords(s):  
Category(s): Technology Classifications > Imaging & Optics > Medical Imaging, Technology Classifications > Imaging & Optics
A Mechanism and Method for Synthesis of a 2-D Gamma-ray Pinhole Projection Image from a Plurality of Slit Projection Images
This invention is a 3D medical imaging technique that incorporates single photon emission computed tomography (SPECT) to image radioisotope distributions, which are generally used to detect/monitor cancer, drug delivery, etc. This imaging technique uses SPECT to take 2D and 3D tomographic images of radioisotope distributions, both of which can be analyzed...
Published: 7/15/2022   |   Inventor(s): Lars Furenlid, Xin Li
Keywords(s):  
Category(s): Technology Classifications > Imaging & Optics > Medical Imaging
Fast Gamma-Ray Interaction-Position Estimation
Researchers at the University of Arizona have developed systems and methods for estimating gamma ray positions that are faster, more accurate, and more computationally and memory-use efficient than known systems and methods used in the medical imaging field. Background: Scintillator-based detectors have been extensively used in both clinical and...
Published: 7/15/2022   |   Inventor(s): Xin Li, Lars Furenlid
Keywords(s):  
Category(s): Technology Classifications > Imaging & Optics, Technology Classifications > Imaging & Optics > Medical Imaging
Calibration Method for Photon Counting Detectors
This technology is a calibration method that could be a game changer for adoption of photon counting-based imagery. It solves long-standing challenges in the calibration of detectors used in medical imaging devices and is also useful for security screenings and other imaging photon counting detectors. The method is simple to use, requires less time...
Published: 1/13/2023   |   Inventor(s): Lars Furenlid, Xin Li
Keywords(s):  
Category(s): Technology Classifications > Imaging & Optics, Technology Classifications > Imaging & Optics > Sensors and Detection
Adaptive Multi-Bit Sigma-Delta Modulation Digitizer For Pulsed Waveforms
Researchers at the University of Arizona have designed, built, and tested a digital-to-analogue circuit (DAC) that utilizes a multi-bit, sigma-delta modulation technique in a novel manner. The DAC captures the transient information as well as the pulse shape and displays it with high resolution even over an extremely short duration. The circuitry minimizes...
Published: 7/15/2022   |   Inventor(s): Lars Furenlid, Maria Ruiz-Gonzalez
Keywords(s):  
Category(s): Technology Classifications > Imaging & Optics > Medical Imaging
Distributed Feedback Fiber Laser Pumped by Multimode Diode Lasers
Researchers at the University of Arizona College of Optical Sciences and Canada's Carleton University recently succeeded in fabricating high reflectivity (>99%) Fiber Bragg Gratings (FBGs) into phosphate glass fibers using UV light and a phase mask technique. With this new manufacturing technique, fiber lasers can be created as single monolithic...
Published: 12/21/2022   |   Inventor(s): Nasser Peyghambarian, Axel Schülzgen, Li Li, Jacques Albert
Keywords(s):  
Category(s): Technology Classifications > Imaging & Optics, Technology Classifications > Imaging & Optics > Lasers & Other Sources
All-Fiber Multicore Fiber Laser Devices
Researchers at the University of Arizona have developed a compact, power-scalable, alignment-free fiber laser that takes a new approach to stabilizing phase-locked operation of multi-core fiber lasers by completely removing all free space optical components. This high-brightness, all-fiber laser package uses passive optical fiber spliced at both ends...
Published: 7/15/2022   |   Inventor(s): Nasser Peyghambarian, Axel Schülzgen, Li Li
Keywords(s):  
Category(s): Technology Classifications > Imaging & Optics, Technology Classifications > Imaging & Optics > Fiber Optics, Technology Classifications > Imaging & Optics > Lasers & Other Sources