TY - JOUR
T1 - Soft tissue scanning for patient registration in image-guided surgery
AU - Marmulla, Rüdigger
AU - Hassfeld, Stefan
AU - Lüth, Tim
AU - Mende, Ulrich
AU - Mühling, Joachim
PY - 2003
Y1 - 2003
N2 - Prior to an image-guided surgical intervention, a correlation between the patient's data set and the surgical site is required. This study introduces a markerless registration method for craniomaxillofacial surgery that is based on a high-resolution laser scan of the patient's skin surface. The Surgical Segment Navigator SSN++ rejects contaminated surface measurements in a way similar to the bluescreen technique. Acquisition of the spatial position and the corresponding surface color of each laser-scanned point facilitates this bluescreen method, removing points with a defined surface color, e.g., blue or green points. The accuracy of the laser-scan-based registration was measured via additional intraoral titanium-markers. These markers served only to check the accuracy of the markerless registration process. In twelve patients, the stability and accuracy of the data set alignment was evaluated for high-(300,000 surface points), medium-, and low-resolution (down to 3,750 surface points) laser scanning. The accuracy of the registration technique was best for high-resolution laser scanning (mean deviation 1.1 mm; maximum deviation 1.8 mm). Low-resolution laser scans revealed inaccuracies up to 6 mm.
AB - Prior to an image-guided surgical intervention, a correlation between the patient's data set and the surgical site is required. This study introduces a markerless registration method for craniomaxillofacial surgery that is based on a high-resolution laser scan of the patient's skin surface. The Surgical Segment Navigator SSN++ rejects contaminated surface measurements in a way similar to the bluescreen technique. Acquisition of the spatial position and the corresponding surface color of each laser-scanned point facilitates this bluescreen method, removing points with a defined surface color, e.g., blue or green points. The accuracy of the laser-scan-based registration was measured via additional intraoral titanium-markers. These markers served only to check the accuracy of the markerless registration process. In twelve patients, the stability and accuracy of the data set alignment was evaluated for high-(300,000 surface points), medium-, and low-resolution (down to 3,750 surface points) laser scanning. The accuracy of the registration technique was best for high-resolution laser scanning (mean deviation 1.1 mm; maximum deviation 1.8 mm). Low-resolution laser scans revealed inaccuracies up to 6 mm.
KW - Surgical Segment Navigator
KW - cranio-maxillofacial surgery
KW - image-guided surgery
KW - laser scan
KW - surface registration
UR - http://www.scopus.com/inward/record.url?scp=2442487895&partnerID=8YFLogxK
U2 - 10.3109/10929080309146041
DO - 10.3109/10929080309146041
M3 - Article
C2 - 15015720
AN - SCOPUS:2442487895
SN - 1092-9088
VL - 8
SP - 70
EP - 81
JO - Computer Aided Surgery
JF - Computer Aided Surgery
IS - 2
ER -