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Related Experiment Video

Updated: May 15, 2026

Proton Therapy Delivery and Its Clinical Application in Select Solid Tumor Malignancies

Proton Therapy Delivery and Its Clinical Application in Select Solid Tumor Malignancies

Published on: February 6, 2019

Development of a Head Scanner for Proton CT.

H F-W Sadrozinski¹, R P Johnson, S Macafee

¹Santa Cruz Institute for Particle Physics, UC Santa Cruz, Santa Cruz, CA 95064, USA.

Nuclear Instruments & Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment

|December 25, 2012

Summary

This summary is machine-generated.

A new head scanner for Proton Computed Tomography (pCT) was developed to accurately map proton stopping power for treatment planning. This system supports clinical proton therapy by enabling precise proton range verification.

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Area of Science:

Medical Physics
Radiological Imaging
Radiation Oncology

Background:

Proton therapy requires accurate dose calculations, which depend on precise tissue density information.
Current imaging techniques may not provide sufficient accuracy for proton stopping power determination.
Proton Computed Tomography (pCT) offers a potential solution for superior range verification.

Purpose of the Study:

To introduce a novel head scanner designed for Proton Computed Tomography (pCT).
To enable accurate reconstruction of proton stopping power (S.P.) maps in phantoms and patients.
To support proton therapy treatment planning with enhanced imaging capabilities.

Main Methods:

The pCT system utilizes two silicon telescopes for proton tracking before and after the object.
An energy detector measures residual proton energy to determine Water Equivalent Path Length (WEPL).
The system is informed by prototype experience and extensive Geant4 simulations.

Main Results:

The developed pCT scanner is designed to reconstruct accurate stopping power maps.
The system is capable of handling clinically relevant proton fluxes.
Simulations and prototype data support the feasibility of the new scanner.

Conclusions:

The new pCT head scanner represents a significant advancement for proton therapy.
Accurate S.P. mapping is crucial for precise proton range prediction in treatment planning.
This technology has the potential to improve patient outcomes in proton therapy.