Ultrasound calibration and real-time quality assurance based on closed form formulation

US7867167B2 · kind B2 · utility

Assignee

• THE JOHNS HOPKINS UNIVERSITY · US

Inventors

• Emad M. Boctor · Baltimore, US
• Gregory D. Hager · Baltimore, US
• Gabor Fichtinger · Kingston, CA
• Anand Viswanathan · Krumme Reihe, US

Key dates

• Filing date: Apr 15, 2005
• Grant date: Jan 11, 2011
• Expiry date: Feb 9, 2027

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B8/483
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Disclosed is a system and method for intra-operatively spatially calibrating an ultrasound probe. The method includes determining the relative changes in ultrasound images of a phantom, or high-contrast feature points within a target volume, for three different ultrasound positions. Spatially calibrating the ultrasound probe includes measuring the change in position and orientation of the probe and computing a calibration matrix based on the measured changes in probe position and orientation and the estimated changes in position and orientation of the phantom.