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Improving Accuracy for Image Fusion in Abdominal Ultrasonography

Department of Radiology, Rigshospitalet, Copenhagen Univsersity Hospital, Blegdamsvej 9, Copenhagen OE DK-2100, Denmark
Author to whom correspondence should be addressed.
Diagnostics 2012, 2(3), 34-41;
Received: 27 June 2012 / Revised: 30 July 2012 / Accepted: 22 August 2012 / Published: 27 August 2012
Image fusion involving real-time ultrasound (US) is a technique where previously recorded computed tomography (CT) or magnetic resonance images (MRI) are reformatted in a projection to fit the real-time US images after an initial co-registration. The co-registration aligns the images by means of common planes or points. We evaluated the accuracy of the alignment when varying parameters as patient position, respiratory phase and distance from the co-registration points/planes. We performed a total of 80 co-registrations and obtained the highest accuracy when the respiratory phase for the co-registration procedure was the same as when the CT or MRI was obtained. Furthermore, choosing co-registration points/planes close to the area of interest also improved the accuracy. With all settings optimized a mean error of 3.2 mm was obtained. We conclude that image fusion involving real-time US is an accurate method for abdominal examinations and that the accuracy is influenced by various adjustable factors that should be kept in mind. View Full-Text
Keywords: ultrasound; image-fusion; CT; accuracy ultrasound; image-fusion; CT; accuracy
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MDPI and ACS Style

Ewertsen, C.; Hansen, K.L.; Henriksen, B.M.; Nielsen, M.B. Improving Accuracy for Image Fusion in Abdominal Ultrasonography. Diagnostics 2012, 2, 34-41.

AMA Style

Ewertsen C, Hansen KL, Henriksen BM, Nielsen MB. Improving Accuracy for Image Fusion in Abdominal Ultrasonography. Diagnostics. 2012; 2(3):34-41.

Chicago/Turabian Style

Ewertsen, Caroline, Kristoffer L. Hansen, Birthe M. Henriksen, and Michael B. Nielsen 2012. "Improving Accuracy for Image Fusion in Abdominal Ultrasonography" Diagnostics 2, no. 3: 34-41.

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