Automatic recognition of different types of acute leukaemia in peripheral blood by image analysis.
AIMS
Morphological differentiation among different blast cell lineages is a difficult task and there is a lack of automated analysers able to recognise these abnormal cells. This study aims to develop a machine learning approach to predict the diagnosis of acute leukaemia using peripheral blood (PB) images.


METHODS
A set of 442 smears was analysed from 206 patients. It was split into a training set with 75% of these smears and a testing set with the remaining 25%. Colour clustering and mathematical morphology were used to segment cell images, which allowed the extraction of 2,867 geometric, colour and texture features. Several classification techniques were studied to obtain the most accurate classification method. Afterwards, the classifier was assessed with the images of the testing set. The final strategy was to predict the patient's diagnosis using the PB smear, and the final assessment was done with the cell images of the smears of the testing set.


RESULTS
The highest classification accuracy was achieved with the selection of 700 features with linear discriminant analysis. The overall classification accuracy for the six groups of cell types was 85.8%, while the overall classification accuracy for individual smears was 94% as compared with the true confirmed diagnosis.


CONCLUSIONS
The proposed method achieves a high diagnostic precision in the recognition of different types of blast cells among other mononuclear cells circulating in blood. It is the first encouraging step towards the idea of being a diagnostic support tool in the future.
['Boldú|Laura|L|http://orcid.org/0000-0002-5162-3182', 'Merino|Anna|A|http://orcid.org/0000-0002-1889-8889', 'Alférez|Santiago|S|', 'Molina|Angel|A|', 'Acevedo|Andrea|A|', 'Rodellar|José|J|']
D000208:Acute Disease D001800:Blood Specimen Collection D019070:Cell Lineage D003937:Diagnosis, Differential D006801:Humans D007090:Image Interpretation, Computer-Assisted D007938:Leukemia D007962:Leukocytes D000069550:Machine Learning D010363:Pattern Recognition, Automated D011237:Predictive Value of Tests D015203:Reproducibility of Results D013194:Staining and Labeling
leukaemia peripheral blood image analysis features automatic classification morphological analysis