Colorectal cancer screening in asymptomatic adults: The role of FDG PET scan

中國醫藥大學機構典藏 China Medical University Repository, Taiwan > 台中附設醫院 > 期刊論文 > Item 310903500/29659

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題名:	Colorectal cancer screening in asymptomatic adults: The role of FDG PET scan
作者:	Chen, YK;Kao, CH;Liao, AC;Shen, YY;Su, CT
貢獻者:	附設醫院核子醫學部;China Med Univ Hosp, Dept Nucl Med, Taichung 404, Taiwan;Shin Kong Wu Ho Su Mem Hosp, Dept Med Imaging, Taipei, Taiwan;China Med Univ Hosp, Dept Nucl Med, Taichung, Taiwan
日期:	2003
上傳時間:	2010-09-24 14:39:49 (UTC+8)
出版者:	INT INST ANTICANCER RESEARCH
摘要:	In this paper, we apply the three-dimensional (3-D) active contour model to a 3-D ultrasonic data file for segmenting of the breast tumor. The 3-D ultrasonic file is composed of a series of two-dimensional (2-D) images. Most of traditional techniques of 2-D image segmentation will not use the information between adjacent images. To suit the property of the 3-D data, we introduce the concept of the 3-D stick, the 3-D morphologic process and the 3-D active contour model. The 3-D stick can get over the problem that the ultrasonic image is full of speckle noise and highlight the edge information in images. The 3-D morphologic process helps to determine the contour of the tumor and the resulting contour can be regarded as the initial contour of the active contour model. Finally, the 3-D active contour model will make the initial contour approach to the real contour of the tumor. However, there is emphasis on these 3-D techniques that they do not consist of a series of 2-D techniques. When they work, they will consider the horizontal, vertical and depth directions at the same time. The use of these 3-D techniques not only segments the 3-D shape but also obtains the volume of the tumor. The volume of the tumor calculated by the proposed method will be compared with the volume calculated by the VOCAL(TM) software with the physician's manually drawn shape and it shows that the performance of our method is satisfactory.
關聯:	ANTICANCER RESEARCH 23(5B):4357-4361
顯示於類別:	[台中附設醫院] 期刊論文

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