Diagnostics 2012, 2(3), 34-41; doi:10.3390/diagnostics2030034
Article

Improving Accuracy for Image Fusion in Abdominal Ultrasonography

Caroline Ewertsen* email, Kristoffer L. Hansenemail, Birthe M. Henriksenemail and Michael B. Nielsenemail
Department of Radiology, Rigshospitalet, Copenhagen Univsersity Hospital, Blegdamsvej 9, Copenhagen OE DK-2100, Denmark
* Author to whom correspondence should be addressed.
Received: 27 June 2012; in revised form: 30 July 2012 / Accepted: 22 August 2012 / Published: 27 August 2012
PDF Full-text Download PDF Full-Text [284 KB, uploaded 27 August 2012 12:02 CEST]
Abstract: 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.
Keywords: ultrasound; image-fusion; CT; accuracy

Article Statistics

Click here to load and display the download statistics.

Cite This Article

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

Diagnostics EISSN 2075-4418 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert