Computerized image analysis as a tool to quantify infiltrating leukocytes: a comparison between high- and low-magnification images.

@article{citeulike:2772728, abstract = {The purpose of the present study was to establish a rapid and reproducible method for quantification of tissue-infiltrating leukocytes using computerized image analysis. To achieve this, the staining procedure, the image acquisition, and the image analysis method were optimized. Because of the adaptive features of the human eye, computerized image analysis is more sensitive to variations in staining compared with manual image analysis. To minimize variations in staining, an automated immunostainer was used. With a digital scanner camera, low-magnification images could be sampled at high resolution, thus making it possible to analyze larger tissue sections. Image analysis was performed by color thresholding of the digital images based on values of hue, saturation, and intensity color mode, which we consider superior to the red, green, and blue color mode for analysis of most histological stains. To evaluate the method, we compared computerized analysis of images with a x100 or a x12.5 magnification to assess leukocytes infiltrating rat brain tumors after peripheral immunizations with tumor cells genetically modified to express rat interferon-gamma (IFN-gamma) or medium controls. The results generated by both methods correlated well and did not show any significant differences. The method allows efficient and reproducible processing of large tissue sections that is less time-consuming than conventional methods and can be performed with standard equipment and software.(J Histochem Cytochem 49:1073-1079, 2001)}, address = {Department of Cell and Molecular Biology, Section for Tumour Immunology, University of Lund, 221 84 Lund, Sweden. Anna.Johansson@wblab.lu.se}, author = {Johansson, A. C. and Visse, E. and Widegren, B. and Sj\"{o}gren, H. O. and Siesj\"{o}, P. }, citeulike-article-id = {2772728}, issn = {0022-1554}, journal = {The journal of histochemistry and cytochemistry : official journal of the Histochemistry Society}, keywords = {imaging, method}, month = {September}, number = {9}, pages = {1073--1079}, posted-at = {2008-05-08 16:50:34}, priority = {2}, title = {Computerized image analysis as a tool to quantify infiltrating leukocytes: a comparison between high- and low-magnification images.}, url = {http://www.jhc.org/cgi/content/abstract/49/9/1073}, volume = {49}, year = {2001} }

TY - JOUR ID - citeulike:2772728 L3 - citeulike-article-id:2772728 TI - Computerized image analysis as a tool to quantify infiltrating leukocytes: a comparison between high- and low-magnification images. JF - The journal of histochemistry and cytochemistry : official journal of the Histochemistry Society VL - 49 IS - 9 SP - 1073 EP - 1079 AD - Department of Cell and Molecular Biology, Section for Tumour Immunology, University of Lund, 221 84 Lund, Sweden. Anna.Johansson@wblab.lu.se SN - 0022-1554 N2 - The purpose of the present study was to establish a rapid and reproducible method for quantification of tissue-infiltrating leukocytes using computerized image analysis. To achieve this, the staining procedure, the image acquisition, and the image analysis method were optimized. Because of the adaptive features of the human eye, computerized image analysis is more sensitive to variations in staining compared with manual image analysis. To minimize variations in staining, an automated immunostainer was used. With a digital scanner camera, low-magnification images could be sampled at high resolution, thus making it possible to analyze larger tissue sections. Image analysis was performed by color thresholding of the digital images based on values of hue, saturation, and intensity color mode, which we consider superior to the red, green, and blue color mode for analysis of most histological stains. To evaluate the method, we compared computerized analysis of images with a x100 or a x12.5 magnification to assess leukocytes infiltrating rat brain tumors after peripheral immunizations with tumor cells genetically modified to express rat interferon-gamma (IFN-gamma) or medium controls. The results generated by both methods correlated well and did not show any significant differences. The method allows efficient and reproducible processing of large tissue sections that is less time-consuming than conventional methods and can be performed with standard equipment and software.(J Histochem Cytochem 49:1073-1079, 2001) KW - imaging KW - method AU - Johansson, AC AU - Visse, E AU - Widegren, B AU - Sjögren, HO AU - Siesjö, P PY - 2001/09// UR - http://www.jhc.org/cgi/content/abstract/49/9/1073 ER -