Automatic detection of linear artifacts in medical images

被引:0
作者
Holupka, EJ [1 ]
Meskell, PM [1 ]
Kaplan, ID [1 ]
机构
[1] Harvard Univ, Sch Med, Beth Israel Deaconess Med Ctr, Dept Radiat Therapy, Boston, MA 02215 USA
关键词
prostate cancer; radioactive seed implantation; radioactive linear sources; segmentation; algorithm;
D O I
10.1118/1.1783553
中图分类号
R8 [特种医学]; R445 [影像诊断学];
学科分类号
1002 ; 100207 ; 1009 ;
摘要
Our purpose in this study is to describe an algorithm for the automatic detection of linear artifacts in medical images. Linear artifacts arise as a result of many different forms of tissues and tissue boundaries within the imaging volume. Additionally, linear artifacts can arise for artificial structures such as radioactive seeds and radioactive linear sources. It is the purpose of the described algorithm to automatically detect linear artifacts of a certain length and diameter. The algorithm was written and compiled on a Pentium-4 based computer in the Microsoft Visual C/C++ language. Inert coils supplied by Radiomed Inc. were implanted into a standard prostate ultrasound phantom. Transaxial ultrasound images of the implanted phantom were obtained at 2 mm increments. The coded algorithm was then applied to the ultrasound imaging volume to automatically segment out the implanted coils. Thirteen coils were implanted in the prostate phantom. Thirteen coils were automatically identified in the imaging volume. An algorithm was developed to automatically determine the position and orientation of radioactive coils within an imaging volume. The algorithm successfully identified thirteen coils implanted in an ultrasound prostate phantom. (C) 2004 American Association of Physicists in Medicine.
引用
收藏
页码:2707 / 2710
页数:4
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