UCL logo

UCL Discovery

UCL home » Library Services » Electronic resources » UCL Discovery

Cadaver validation of intensity-based ultrasound to CT registration

Penney, GP; Barratt, DC; Chan, CSK; Slomczykowski, M; Carter, TJ; Edwards, PJ; Hawkes, DJ; (2005) Cadaver validation of intensity-based ultrasound to CT registration. SPRINGER-VERLAG BERLIN

Full text not available from this repository.

Abstract

A method is presented for the registration of tracked B-mode ultrasound images to a CT volume of a femur or pelvis. This registration can allow tracked surgical instruments to be aligned with the CT image or an associated preoperative plan. Our method requires no manual segmentation of either the ultrasound images or the CT volume. The CT and US images are processed to produce images where the image intensity represents the probability of the presence of a bone edge. These images are then registered together using normalised cross-correlation as a similarity measure. The parameter which represents the speed of sound through tissue has also been included in the registration optimisation process. Experiments have been carried out on six cadaveric femurs and three cadaveric pelves. Registration results were compared with a "gold standard" registration acquired using bone implanted fiducial markers. Results show the registration method to be accurate, on average, to 1.7mm root-mean-square target registration error.

Type:Other
Title:Cadaver validation of intensity-based ultrasound to CT registration
Location:Palm Springs, CA
Dates:2005-10-26 - 2005-10-29
ISBN:3-540-29326-4
Keywords:TOTAL HIP-ARTHROPLASTY, IMAGES
UCL classification:UCL > School of BEAMS > Faculty of Engineering Science > Medical Physics and Bioengineering

Archive Staff Only: edit this record