ct图像中的肺叶自动分割-生物医学工程专业毕业论文.docx

查堕查兰堡主堂垡堡苎
Abstract
This paper developed the algorithm puter-based automatically lobe segmentation in CT pulmonary images and realized anatomic structure of the lung and background knowledge of medical image formation is the paper discussed various theory and technology in medical image author applied them
comprehensively and realized puter-aided lobe fissure detection,thUS realized automatic lobe segmentation.
The lobar fissures are low contrast objects with blurred boundaries in CT images,and
the detection task plicated by surrounding vessels or other structures,and noise and
artifacts in the order to achieve fully automatic lobe segmentation,we utilize an
anatomic atlas that iS calculated from a set of pre—segmented training data deforming the fissures onto a template image,the average fissure and variability between different subjects Can be obtained by 10Cal statistical probabilistic analysis
shows that the atlas can provide art initialization for the fissure the initialization may not be close ,in order to enhance the fissure contrast,a ridgeness measure is after initial search,‘reliable’fissure selection and final search,the fissure is detected and the tobe is result shOWS that this method
works pretty method developed in this PaDer has some significance to future research on lung anatomy.
Key words:puterized tomography)·image segmentation,atlas'ridgen。88
graph search
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东南大学硕士学位论文
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东南大学硕士学位论文
第一章 绪论
”3
呼吸系统从大气中将氧气运输到肺