Patent · US Active

Asymmetric dual-mode ionization systems and methods

US11534626B2 · kind B2 · utility

1Cited by

5References

21Claims

0Family size

Assignee

VARIAN MEDICAL SYSTEMS PARTICLE THERAPY GMBH & CO. KG · DE

Inventors

Manuel Schedler · Bonn, DE
Simon Busold · Cologne, DE
Birger Schumacher · Kürten, DE

Key dates

Filing date	Mar 31, 2021
Grant date	Dec 27, 2022
Priority date	—
Expiry date	Mar 31, 2041

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61N2005/1087
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.