DocumentCode :
3079347
Title :
3D volume registration: experiments on tissue phantom and liver
Author :
Porter, Brian C. ; Strang, John G. ; Rubens, Deborah J. ; Parker, Kevin J.
Author_Institution :
Dept. of Electr. & Comput. Eng., Rochester Univ., NY, USA
Volume :
2
fYear :
2000
fDate :
36800
Firstpage :
1581
Abstract :
The fusion of multiple ultrasound scans, taken from different orientations and different times, can enhance interventional procedures and can quantify response to therapy. However, fusion of ultrasound scans requires precision alignment of recognizable fiducial markers. We present the results of volume registration of liver tissue and phantom material to test the accuracy of a semi-automated registration algorithm. Both linear tracking and magnetic “Flock of Birds” (FOE) position sensing are employed to register sequential frames of 2D ultrasound into 3D space. Major vessels and/or interventional probes are utilized as internal fiducial markers for a correlation registration algorithm. US scans were obtained from a volunteer with a known hemangioma, a benign, stable, echogenic liver tumor. Complementary, non-parallel scans were then fused to determine hemangioma co-registration displacement error. The average central displacement error was 4.1 mm. To further test our algorithm, we obtained perpendicular scans of a radio-frequency (RF) ablation probe within a tissue phantom. The volumes were registered and fused successfully, with an average displacement error of 1.1 mm. In conclusion, internal structures such as vessels and interventional probes provide adequate markers for volume fusion, producing misregistration errors less than 7.4 mm
Keywords :
biological tissues; biomedical ultrasonics; image registration; liver; medical image processing; sensor fusion; tumours; 2D ultrasound; 3D space; 3D volume registration; US scans; accuracy; average central displacement error; average displacement error; benign stable echogenic liver tumor; complementary nonparallel scans; correlation registration algorithm; different orientations; different times; hemangioma; hemangioma co-registration displacement error; internal fiducial markers; internal structures; interventional probes; interventional procedures; linear tracking; liver; magnetic Flock of Birds position sensing; major vessels; misregistration errors; multiple ultrasound scan fusion; perpendicular scans; precision alignment; radio-frequency ablation probe; recognizable fiducial markers; semi-automated registration algorithm; sequential frames; therapy; tissue phantom; volume fusion; Imaging phantoms; In vivo; Liver neoplasms; Medical treatment; Position measurement; Probes; Radio frequency; Ultrasonic imaging; Ultrasonic transducers; Volume measurement;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Ultrasonics Symposium, 2000 IEEE
Conference_Location :
San Juan
ISSN :
1051-0117
Print_ISBN :
0-7803-6365-5
Type :
conf
DOI :
10.1109/ULTSYM.2000.921625
Filename :
921625
Link To Document :
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