Automatic matching of homologous histological sections

The role of neuroanatomical atlases is undergoing a significant redefinition as digital atlases become available. These have the potential to serve as more than passive guides and to hold the role of directing segmentation and multimodal fusion of experimental data. Key elements needed to support th...

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Bibliographic Details
Published in:	IEEE transactions on biomedical engineering Vol. 45; no. 5; pp. 642 - 649
Main Authors:	Cohen, F.S., Zhengwei Yang, Zhaohui Huang, Nianov, J.
Format:	Journal Article
Language:	English
Published:	New York, NY IEEE 01-05-1998 Institute of Electrical and Electronics Engineers
Subjects:	Algorithms Anatomy Animals Biological and medical sciences Brain Brain - anatomy & histology Brain - cytology Brain Mapping - methods Central nervous system Computer simulation Controllability Data Interpretation, Statistical Fundamental and applied biological sciences. Psychology Humans Image Interpretation, Computer-Assisted Image Processing, Computer-Assisted Image segmentation Male Materials testing Mathematical transformations Models, Neurological Neurology Noise robustness Noise shaping Nonuniform sampling Parameter estimation Rats Rats, Sprague-Dawley Reference Values Robust control Shape control Species Specificity Spline Tissue Two dimensional displays Vertebrates: nervous system and sense organs B spline Performance evaluation Cartographic representation Rat Rodentia Central nervous system Functional analysis Histology Algorithm Vertebrata Image analysis Mammalia Animal Morphology Automatic system Data fusion Brain (vertebrata)
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Summary:	The role of neuroanatomical atlases is undergoing a significant redefinition as digital atlases become available. These have the potential to serve as more than passive guides and to hold the role of directing segmentation and multimodal fusion of experimental data. Key elements needed to support these new tasks are registration algorithms. For images derived from histological procedures, the need is for techniques to map the two-dimensional (2-D) images of the sectional material into the reference atlas which may be a full three-dimensional (3-D) data set or one consisting of a series of 2-D images. A variety of 2-D-2-D registration methods are available to align experimental images with the atlas once the corresponding plane of section through the atlas has been identified. Methods to automate the identification of the homologous plane, however, have not been previously reported. Here, the authors use the external section contour to drive the identification and registration procedure. For this purpose, the authors model the contours by B-splines because of their attractive properties the most important of which are: (1) smoothness and continuity; (2) local controllability which implies that local changes in shape are confined to the B-spline parameters local to that change; (3) shape invariance under affine transformation, which means that the affine transformed curve is still a B-spline whose control points are related to the object control points through the transformation. The authors present a fast algorithm for estimating the control points of the B-spline which is robust to nonuniform sampling, noise, and local deformations. Curve matching is achieved by using a similarity measure that depends directly on the parameters of the B-spline. Performance tests are reported using histological material from rat brains.
Bibliography:	ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 ObjectType-Article-1 ObjectType-Feature-2
ISSN:	0018-9294 1558-2531
DOI:	10.1109/10.668755