PET (Positron Emission Tomography)

A PET scan uses a radioactive tracer to give 3D information on how the tissues and organs in the body are functioning. The radioactive tracer may be injected, swallowed or inhaled, depending on the type of study. The tracer collects in areas of interest corresponding to the disease or condition being studied.The tracer concentration in the body is then imaged using the PET scanner which detects the radiation it emits.

The high-performance, functional imaging that is now possible with PET has made it the industry standard for cancer staging and every year, the number of clinical applications of PET is increasing. New applications for PET are becoming mainstream and authorized by the world’s health care providers and with this comes a drive for increasing PET performance at lower cost. SiPM sensors have now replaced PMTs as the de-facto choice for high-performance PET systems.

This page gives details of recommended products and related academic papers as well as a variety of other information that may be of use to someone interested in SiPM for PET applications.

Highlighted Performance

Detection Efficiency of C-Series and J-Series Compared to the Emission of LYSO

Normalized PDE curves for the C-Series (MLP package) and the J-Series (TSV package) and the normalized emission spectrum for LYSO. In practice, the absolute peak value of the C-Series PDE curve is 41% and 51% for the J-Series.

Coincidence Resolving Time of J-Series Sensors with Various Scintillation Crystals

The CRT values as a function of bias voltage for different crystals, attained with the fast outputs from two MicroFJ-30035-TSV sensors in coincidence. These results are from J.Cates and C.Levin of Stanford University.

Sub-Applications

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The J-Series sensors have a number of features that have been optimized to provide the best timing resolution for ToF applications: The PDE has been increased to over 50%, and the transit time spread has been minimized across the area of the device. These features combine to provide excellent coincidence resolving time (CRT):

Helpful Documents

Building Arrays of SensL SMT Sensors (Tech Note)

This Tech Note has advice for users who wish to create close-packed arrays of MLP or TSV packaged sensors on PCB.

Readout Methods for Arrays of SiPM (Tech Note)

This Tech Note discusses the various readout methods for arrays of sensors, specifically with regard to medical imaging applications.

Signal Driven Multiplexing (Tech Note)

This Tech Note describes in detail and signal multiplexing technique that is used to reduce the number of readout channels for an array.

Product Selection Guide (Product Brief)

This document gives an overview of SensL’s SiPM sensors, highlighting the differences and summarizing which sensors are available in a particular size or package.