How digital photo counting works

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The DPC detector tile consists of an array of 64 pixels. Each pixel couples directly to a single scintillation crystal.

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Each pixel contains thousands of microcells that enable detection of single photons. Each photon is converted directly into a pure binary output signal.

Advantages of digital detection

In conventional analog PET scanning, photomultipliers that are used to detect light output from the scintillator are limited in counting capabilities due to size and processing capabilities. To count photon events, light emitted from the scintillator is dispersed to multiple photomultiplier detectors. This sharing of information limits the capability of the PET detector to accurately process count rate information and location of the origin of the photon.

The Philips difference is digital. Unlike analog PET/CT scanners that use photomultipliers to detect light, the Vereos PET/CT scanner uses proprietary Digital Photon Counting (DPC) technology. It detects photons emitted from radiotracers individually by converting the scintillating light that collects them directly into a digital signal. This 1:1 coupling of crystals to light sensors provides faster time-of-flight than analog*, and approximately twice the sensitivity gain, volumetric resolution and quantitative accuracy.

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Preliminary performance data*

Number of Detectors


System spatial resolution


Effective system sensitivity

>22.0 kcps/MBq

Effective peak NECR

>650 kcps @ 50 kBq/mL

Maximum trues

>900 kcps

System timing resolution

>345 ps

Quantitative accuracy

+/- 5%

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*Preliminary performance is subject to change

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Key features

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Digital PET Detection

Digital Photon Counting (DPC) converts scintillation light directly to a digital signal. The 1:1 coupling of crystals to light sensors produces a linear count rate, faster Time-of-Flight (TOF) performance and overall sensitivity gains.*

*As compared to GEMINI TF 16


iDose4 improves image quality** through artifact prevention and increased spatial resolution at low dose. O-MAR reduces artifacts caused by large orthopedic implants. Together they produce high image quality with reduced artifacts.

**Improved image quality is defined by improvements in spatial resolution and/or noise reduction as measured in phantom studies.

Fast Workflow

iPatient, our personalized patient-centric workflow, is built for iterative reconstruction techniques and high image quality at low dose levels to drive confidence and consistency 24/7.

Advanced Design

Soft lighting creates a calm, soothing environment for patients. Meanwhile, clean lines, rounded corners and a glossy finish offer a premium, high-tech feel.

Business Value

Broad clinical applications - from oncology to orthopedics - help you expand your practice's capabilities. And 9 out of 10 referring physicians prefer Vereos Digital PET images over analog*+


+Based on a recent survey of referring oncologists.

To learn more about the Vereos Digital PET/CT scanner, please call 1-800-229-6417, or request information.

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