{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,1,13]],"date-time":"2025-01-13T01:10:02Z","timestamp":1736730602275,"version":"3.32.0"},"reference-count":22,"publisher":"World Scientific Pub Co Pte Ltd","issue":"04","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Int. J. Human. Robot."],"published-print":{"date-parts":[[2006,12]]},"abstract":"<jats:p>Prostate surface detection from ultrasound images plays a key role in our recently developed ultrasound guided robotic biopsy system. However, due to the low contrast, speckle noise and shadowing in ultrasound images, this still remains a difficult task. In the current system, a 3D prostate surface is reconstructed from a sequence of 2D outlines, which are performed manually. This is arduous and the results depend heavily on the user's expertise. This paper presents a new practical method, called Evolving Bubbles, based on the level set method to semi-automatically detect the prostate surface from transrectal ultrasound (TRUS) images. To produce good results, a few initial bubbles are simply specified by the user from five particular slices based on the prostate shape. When the initial bubbles evolve along their normal directions, they expand, shrink, merge and split, and finally are attracted to the desired prostate surface. Meanwhile, to remedy the boundary leaking problem caused by gaps or weak boundaries, domain specific knowledge of the prostate and statistical information are incorporated into the Evolving Bubbles. We apply the bubbles model to eight 3D and four stacks of 2D TRUS images and the results show its effectiveness.<\/jats:p>","DOI":"10.1142\/s0219843606000862","type":"journal-article","created":{"date-parts":[[2007,1,16]],"date-time":"2007-01-16T16:28:04Z","timestamp":1168964884000},"page":"439-461","source":"Crossref","is-referenced-by-count":1,"title":["EFFICIENT 3D PROSTATE SURFACE DETECTION FOR ULTRASOUND GUIDED ROBOTIC BIOPSY"],"prefix":"10.1142","volume":"03","author":[{"given":"FAN","family":"SHAO","sequence":"first","affiliation":[{"name":"Tan Tock Seng Hospital, 11 Jalan Tan Tock Seng, 308433, Singapore"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"KECK VOON","family":"LING","sequence":"additional","affiliation":[{"name":"School of Electrical and Electronic Engineering, Nanyang Technological University, 50, Nanyang Avenue, 639798, Singapore"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"LOUIS","family":"PHEE","sequence":"additional","affiliation":[{"name":"School of Mechanical and Production Engineering, Nanyang Technological University, 50, Nanyang Avenue, 639798, Singapore"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"WAN SING","family":"NG","sequence":"additional","affiliation":[{"name":"School of Mechanical and Production Engineering, Nanyang Technological University, 50, Nanyang Avenue, 639798, Singapore"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"DI","family":"XIAO","sequence":"additional","affiliation":[{"name":"Singapore General Hospital, Outram Road, 169608, Singapore"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"219","published-online":{"date-parts":[[2011,11,20]]},"reference":[{"key":"rf1","doi-asserted-by":"crossref","first-page":"474","DOI":"10.1016\/S0022-5347(17)49698-4","volume":"132","author":"Berry S. 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