Document Detail

Detection of brachytherapy seeds using 3-D transrectal ultrasound.
MedLine Citation:
PMID:  20595088     Owner:  NLM     Status:  MEDLINE    
Detection of brachytherapy seeds plays a key role in dosimetry for prostate brachytherapy. However, seed localization using B-mode transrectal ultrasound (TRUS) still remains a challenge for prostate brachytherapy, mainly due to the small size of brachytherapy seeds in the relatively low-quality B-mode TRUS images. In this paper, we propose a new solution for brachytherapy seed detection using 3-D ultrasound. A 3-D reflected power image is computed from ultrasound RF signals, instead of conventional B-mode images. Then, implanted seeds are segmented in 3-D local search spaces that are determined by a priori knowledge, e.g., needle entry points and seed placements. Needle insertion tracks are also detected locally by the Hough transform. Experimental results show that the proposed solution works well for seed localization in a prostate phantom implanted according to a realistic treatment plan with 136 seeds from 26 needles.
Xu Wen; Septimiu Tim E Salcudean; Peter D Lawrence
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't     Date:  2010-06-28
Journal Detail:
Title:  IEEE transactions on bio-medical engineering     Volume:  57     ISSN:  1558-2531     ISO Abbreviation:  IEEE Trans Biomed Eng     Publication Date:  2010 Oct 
Date Detail:
Created Date:  2010-09-20     Completed Date:  2011-01-19     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0012737     Medline TA:  IEEE Trans Biomed Eng     Country:  United States    
Other Details:
Languages:  eng     Pagination:  2467-77     Citation Subset:  IM    
Department of Electrical and Computer Engineering, University of British Columbia, Vancouver, BC V6T 1Z4, Canada.
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MeSH Terms
Brachytherapy / methods*
Image Processing, Computer-Assisted / methods*
Imaging, Three-Dimensional / methods*
Phantoms, Imaging
Prostate / ultrasonography
Prostatic Neoplasms / radiotherapy,  ultrasonography
Rectum / ultrasonography*
Ultrasonography / methods

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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