Enhanced accuracy of three-dimensional intraluminal ultrasound (ILUS) image reconstruction
US5830145A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 24, 1996 |
| Grant date | Nov 3, 1998 |
| Priority date | — |
| Expiry date | Dec 24, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B8/483
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method for imaging an organ or internal structure within a body to obtain three-dimensional reconstruction of the organ or internal structure. The method includes steps of providing an intraluminal ultrasound imaging system capable of obtaining echographic images of the surrounding of a catheter imaging tip located inside the body of a patient. The method also provides a catheter tracking system comprising at least one ultrasound transducer mounted adjacent the imaging tip of an intraluminal ultrasound catheter for insertion into a patient, a plurality of transducers located away from said intraluminal ultrasound catheter so as to form a reference frame, and circuitry for (i) sequentially enabling respective ones of said ultrasound transducers to generate ultrasound signals for reception by respective other ones of said ultrasound transducers, (ii) sequentially measuring elapsed time between generation of said ultrasound signals and reception thereof by said respective other ones of said ultrasound transducers, and (iii) calculating via knowledge of velocity of ultrasonic waves and triangulation from said elapsed times, positions of the plurality of frame transducers relative to …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.