Tracking an interventional device within an ultrasound image plane
US11986339B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 2, 2019 |
| Grant date | May 21, 2024 |
| Priority date | — |
| Expiry date | Aug 19, 2039 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/3413
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
System (10) for determining a position of an interventional device (11) respective an image plane (12) defined by an ultrasound imaging probe (13). The position is determined based on ultrasound signals transmitted between the ultrasound imaging probe (13) and an ultrasound transducer (15) attached to the interventional device (11). An image reconstruction unit (IRU) provides a reconstructed ultrasound image (RUI). A position determination unit (PDU) computes a lateral position (LAPTOFSmax, θIPA) of the ultrasound transducer (15) respective the image plane (12) based on a time of flight (TOFSmax) of a maximum detected intensity (ISmax) ultrasound signal. The position determination unit (PDU) also computes an out-of-plane distance (Dop) between the ultrasound transducer (15) and the image plane (12). Computing the out-of-plane distance (Dop) involves comparing the maximum detected intensity (ISmax) with a model (MO) describing an expected variation of in-plane maximum detected intensity (ISmaxInplane) with time of flight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.