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Related Concept Videos

Positron Emission Tomography01:29

Positron Emission Tomography

Positron emission tomography (PET) is a medical imaging technique involving radiopharmaceuticals — substances that emit short-lived radiation. Although the first PET scanner was introduced in 1961, it took 15 more years before radiopharmaceuticals were combined with the technique and revolutionized its potential.
One of the main requirements of a PET scan is a positron-emitting radioisotope, which is produced in a cyclotron and then attached to a substance used by the part of the body being...
Imaging Studies II: Positron Emission Tomography and Scintigraphy01:25

Imaging Studies II: Positron Emission Tomography and Scintigraphy

Positron Emission Tomography (PET) is a medical imaging technique that provides crucial insights into the body's physiological functions at a molecular level. It is an indispensable resource for diagnosing, staging, and monitoring various illnesses, notably cancer, neurological disorders, and cardiovascular conditions.
Fundamental Principles of PET
NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences01:17

NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences

A pulse is a short burst of radio waves distributed over a range of frequencies that simultaneously excites all the nuclei in the sample. Upon passing a radio frequency pulse along the x-axis, the nuclei absorb energy corresponding to their Larmor frequencies and achieve resonance. This shifts the net magnetization vector from the z-axis toward the transverse plane. This angle of rotation of the magnetization vector, or the flip angle, is proportional to the duration and intensity of the pulse.

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Related Experiment Video

Updated: Jun 11, 2026

A Basic Positron Emission Tomography System Constructed to Locate a Radioactive Source in a Bi-dimensional Space
14:19

A Basic Positron Emission Tomography System Constructed to Locate a Radioactive Source in a Bi-dimensional Space

Published on: February 1, 2016

FPGA-Based Pulse Parameter Discovery for Positron Emission Tomography.

Michael Haselman1, Scott Hauck, Thomas K Lewellen

  • 1Dept. of Electrical Engineering, University of Washington, Seattle, WA 98195 USA. ( haselman@ee.washington.edu , hauck@ee.washington.edu ).

IEEE Nuclear Science Symposium Conference Record. Nuclear Science Symposium
|July 8, 2010
PubMed
Summary
This summary is machine-generated.

Field Programmable Gate Arrays (FPGAs) enable self-calibration for positron emission tomography (PET) scanners. This technology simplifies electronics and enhances image resolution by processing pulse data directly on the FPGA.

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Radiotracer Administration for High Temporal Resolution Positron Emission Tomography of the Human Brain: Application to FDG-fPET
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Radiotracer Administration for High Temporal Resolution Positron Emission Tomography of the Human Brain: Application to FDG-fPET

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14:19

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Continuous Blood Sampling in Small Animal Positron Emission Tomography/Computed Tomography Enables the Measurement of the Arterial Input Function
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Radiotracer Administration for High Temporal Resolution Positron Emission Tomography of the Human Brain: Application to FDG-fPET
09:03

Radiotracer Administration for High Temporal Resolution Positron Emission Tomography of the Human Brain: Application to FDG-fPET

Published on: October 22, 2019

Area of Science:

  • Medical Imaging
  • Digital Signal Processing
  • Embedded Systems

Background:

  • Modern Field Programmable Gate Arrays (FPGAs) offer high clock rates and cost-effectiveness.
  • FPGAs are increasingly used in advanced data acquisition systems for scientific instruments.
  • Positron Emission Tomography (PET) scanners benefit from integrated signal processing for improved performance.

Purpose of the Study:

  • To leverage FPGA reconfigurability for self-calibration in PET scanner electronics.
  • To migrate complex signal processing functions from dedicated circuits to FPGAs.
  • To enhance PET image resolution through advanced on-FPGA signal processing.

Main Methods:

  • Utilizing FPGA reconfigurable properties to generate reference pulses from actual data.
  • Implementing self-calibration algorithms directly within the FPGA fabric.
  • Automating the determination of photodetector pulse parameters (baseline, length, energy, triggers).

Main Results:

  • Successful self-calibration of the FPGA for accurate pulse parameter determination.
  • Generation of a reference pulse based on real data, improving processing accuracy.
  • Automated extraction of key photodetector pulse characteristics.

Conclusions:

  • FPGAs provide a powerful and flexible platform for PET scanner front-end electronics.
  • Self-calibration using FPGAs simplifies hardware and enhances signal processing capabilities.
  • This approach contributes to higher resolution imaging in small-animal PET scanners.