Varian Medical Systems Particle Therapy Gmbh & Co Kg

Varian Medical Systems, Inc.

Siemens Healthineers International Ag

Simon Busold

Eric Abel

Michael Matthew Folkerts

Jessica Perez

Manuel Schedler

Birger Schumacher

Christel Smith

Perttu Niemela

Lauri Halko

Matti Ropo

Pierre Lansonneur

Viljo Petaja

Michiko Rossi

Adam Scott Harrington

Vidhya Krishnamurthi

C Clifton Ling

A method used for planning radiation treatment accessing information that includes calculated doses and calculated dose rates for sub-volumes in a treatment target, and also accessing information that includes values of a measure of the sub-volumes as a function of the calculated doses and the calculated dose rates. A graphical user interface includes a rendering that is based on the calculated doses, the calculated doses rates, and the values of the measure.

Correlation of dose and dose rate information to volume for radiation treatment planning

An asymmetric dual-mode ionization chamber measurement system can include a first high-voltage plate, a second high-voltage plate and a readout plate. The first high-voltage plate can be disposed from the readout plate by a first active volume. The second high-voltage plate can be disposed from the readout plate by a second active volume. A high-voltage potential can be coupled to the first high-voltage plate during a first mode, and to the second high-voltage plate during a second mode. Ion pairs generated by a radiation stream passing through the first active volume during the first mode and the second active volume during the second mode can be measured at the readout plate to determine a radiation rate of the ionizing radiation. The asymmetric dual-mode ionization chamber measurement system can advantageously measure different radiation streams that have significantly different ranges of radiation rates flux.

Asymmetric dual-mode ionization systems and methods

The dose rate of voxels within a particle beam (e.g., proton beam) treatment field delivered using pencil beam scanning (PBS) is calculated, and a representative dose rate for the particle beam treatment field is reported. The calculations account for a dose accumulation in a local region or a sub-volume (e.g., a voxel) as a function of time.

Defining dose rate for pencil beam scanning

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Cologne, Germany

Simon Busold