Water equivalent depth measurement for providing a continuous calibration range based on discrete measurements
US9480862B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 6, 2012 |
| Grant date | Nov 1, 2016 |
| Priority date | — |
| Expiry date | Mar 6, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N2005/1087
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method for determining a water equivalent depth between an entrance point and a reference point is disclosed. The method may comprise sending to a charged particle beam detector placed at a reference point within or beyond a body a charged particle beam whose energy is modulated between a minimum and maximum energy value, acquiring the time dependent response of said charged particle beam detector, determining from said time dependent response a value of a statistical parameter, providing a calibration curve expressing a relationship between values of said statistical parameter and water equivalent depths, and extracting from this calibration curve the water equivalent depth corresponding to the value of the statistical parameter determined from the time dependent response of the charged particle beam detector placed at the reference point.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.