3D positron detector and method for estimating differential dose in hadrontherapy

The present invention concerns the field of medical imaging devices and, specifically, to methods based on imaging the annihilation vertices of positrons emitted by radionuclides inoculated into subjects in the form of tracer, tumour cells or other cells or proteins of interest for medical and preventive purposes.

How does it work?

This new technology aims to improve the quality of images obtained by positron imaging techniques such as PET (Positron Emission Tomography). In particular, it allows the point at which positron annihilation occurs to be visualised more precisely, thus improving image resolution compared to the traditional methods. Another important advantage is the possibility of reducing the amount of radioactive tracer to be injected into the patient. Despite the lower dose, the images obtained are clearer, brighter and with better contrast, making it easier for doctors to detect any abnormalities.

This is made possible thanks to an innovative detector, built with a cylindrical structure containing a scintillating material capable of emitting light when hit by the gamma rays generated in the annihilation process. The light produced is then detected by special optical sensors, which transform it into signals useful for reconstructing the final image. Thanks to the use of more efficient materials and a more advanced configuration, this technology thus allows for more detailed and safer diagnostic images, paving the way for more precise and less invasive examinations.

Applications

• Diagniostic imaging;
• Nuclear Medicine;
• Research and development.

Advantages

• Increased sensitivity;
• More detailed images;
• Better resolution;
• Improved signal-to-noise ratio;
• Better performance.