Lynx PT

High accuracy and speed for daily machine parameter verification

Daily machine parameter verification used from commissioning to machine QA, without compromising between high accuracy and speed.

Carbon Compatible,

Cyclotrons,

Synchro-Cyclotron,

Proton Therapy,

TG224

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Optimized for pencil beam scanning

High resolution scintillator-based sensor

Active surface of 30x30 cm²

and effective resolution of 0.5 mm

Single shot

and movie mode measurements

Compatible with myQA

Dicom RT export supported

What you need to know about Lynx PT

Technology

The Lynx detector consists of a box composed by a scintillating screen of gadolinium-based plastic material which converts the energy lost by ionizing radiation into photons. This light is reflected to photodiodes of a CCD camera outside the irradiation field. To avoid the saturation of the camera, iris aperture can be changed, as well as the gain. The detector signal from the CCD camera is digitalized at a 10-bit depth.

The Lynx detector is easy to setup. It can be operated on the treatment couch. Data is transferred to a PC via Ethernet (previous version used Firewire).

Lynx is supported by the following software solutions:

Lynx2D
myQA Lynx plug-in

Technical specifications

Scintillation screen thickness: 0.4 mm
Energy range: 60Co at 25 MV in photons /4 to 25 MeV in electrons/ 230 MeV Protons
Active surface area: 300 x 300 mm² (600 x 600 pixels)
Pixel size: 4.65 x 4.65 um²
Effective spacial resolution: 0.5 mm
Geometric distortion: ≤ 0.3 mm for the central zone of ≤ 280 x 280 mm²; ≤ 0.8 mm elsewhere
Image acquisition: CCD camera
Video camera: 1024 x 1024, 12-bit resolution
Sampling time: 7 images / secondes
Dose linearity within +/- 1.5%
Spot sigma: Variation < 100 um
Dimensions: 360 x 370 x 600 mm

Accessories

Calibration plate for Lynx PDR1602

Technology

The Lynx detector is easy to setup. It can be operated on the treatment couch. Data is transferred to a PC via Ethernet (previous version used Firewire).

Lynx is supported by the following software solutions:

Lynx2D
myQA Lynx plug-in

Technical specifications

Scintillation screen thickness: 0.4 mm
Energy range: 60Co at 25 MV in photons /4 to 25 MeV in electrons/ 230 MeV Protons
Active surface area: 300 x 300 mm² (600 x 600 pixels)
Pixel size: 4.65 x 4.65 um²
Effective spacial resolution: 0.5 mm
Geometric distortion: ≤ 0.3 mm for the central zone of ≤ 280 x 280 mm²; ≤ 0.8 mm elsewhere
Image acquisition: CCD camera
Video camera: 1024 x 1024, 12-bit resolution
Sampling time: 7 images / secondes
Dose linearity within +/- 1.5%
Spot sigma: Variation < 100 um
Dimensions: 360 x 370 x 600 mm

Accessories

Calibration plate for Lynx PDR1602

Scientific References

Development and long‐term stability of a comprehensive daily QA program for a modern pencil beam scanning (PBS) proton therapy delivery system by Suresh Rana et al.

Scientific References (2 MB)

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Sphinx with Lynx Publication

Placidi et.al. “Range Resolution and Reproducibility of a Dedicated Phantom for Proton PBS Daily Quality Assurance.”
Zeitschrift Für Medizinische Physik 28, no. 4 (December 1, 2018): 310–17.

Conclusion
The proposed combination of the Lynx^® + Sphinx^® systems appear to be suitable as a device for daily QA of proton range for PBS proton therapy, even under extreme, and very unlikely, set-up and beam delivery uncertainties.

Link to publication