TY - JOUR
T1 - 3D-2D registration for surgical guidance
T2 - Effect of projection view angles on registration accuracy
AU - Uneri, A.
AU - Otake, Y.
AU - Wang, A. S.
AU - Kleinszig, G.
AU - Vogt, S.
AU - Khanna, A. J.
AU - Siewerdsen, J. H.
PY - 2014/1/20
Y1 - 2014/1/20
N2 - An algorithm for intensity-based 3D-2D registration of CT and x-ray projections is evaluated, specifically using single- or dual-projection views to provide 3D localization. The registration framework employs the gradient information similarity metric and covariance matrix adaptation evolution strategy to solve for the patient pose in six degrees of freedom. Registration performance was evaluated in an anthropomorphic phantom and cadaver, using C-arm projection views acquired at angular separation, Δθ, ranging from ∼0°-180° at variable C-arm magnification. Registration accuracy was assessed in terms of 2D projection distance error and 3D target registration error (TRE) and compared to that of an electromagnetic (EM) tracker. The results indicate that angular separation as small as Δθ ∼10°-20° achieved TRE <2 mm with 95% confidence, comparable or superior to that of the EM tracker. The method allows direct registration of preoperative CT and planning data to intraoperative fluoroscopy, providing 3D localization free from conventional limitations associated with external fiducial markers, stereotactic frames, trackers and manual registration.
AB - An algorithm for intensity-based 3D-2D registration of CT and x-ray projections is evaluated, specifically using single- or dual-projection views to provide 3D localization. The registration framework employs the gradient information similarity metric and covariance matrix adaptation evolution strategy to solve for the patient pose in six degrees of freedom. Registration performance was evaluated in an anthropomorphic phantom and cadaver, using C-arm projection views acquired at angular separation, Δθ, ranging from ∼0°-180° at variable C-arm magnification. Registration accuracy was assessed in terms of 2D projection distance error and 3D target registration error (TRE) and compared to that of an electromagnetic (EM) tracker. The results indicate that angular separation as small as Δθ ∼10°-20° achieved TRE <2 mm with 95% confidence, comparable or superior to that of the EM tracker. The method allows direct registration of preoperative CT and planning data to intraoperative fluoroscopy, providing 3D localization free from conventional limitations associated with external fiducial markers, stereotactic frames, trackers and manual registration.
KW - 3D-2D image registration
KW - image-guided surgery
KW - target registration error
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U2 - 10.1088/0031-9155/59/2/271
DO - 10.1088/0031-9155/59/2/271
M3 - Article
C2 - 24351769
AN - SCOPUS:84896364553
SN - 0031-9155
VL - 59
SP - 271
EP - 287
JO - Physics in medicine and biology
JF - Physics in medicine and biology
IS - 2
ER -