Lauria, Adele and Palmiero, Rosa and Forni, Giustina and Cerello, Piergiorgio and Golosio, Bruno and Fauci, Francesco and Magro, Rosario and Raso, Giuseppe and Tangaro, Sonia and Indovina, Pier Luigi (2004) The CALMA system: an artificial neural network method for detecting masses and microcalcifications in digitized mammograms. Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 518 (1-2), p. 391-393. ISSN 0168-9002. Article.
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The CALMA (Computer Assisted Library for MAmmography) project is a five years plan developed in a physics research frame in collaboration between INFN (Istituto Nazionale di Fisica Nucleare) and many Italian hospitals. At present a large database of digitized mammographic images (more than 6000) was collected and a software based on neural network algorithms for the search of suspicious breast lesions was developed. Two tools are available: a microcalcification clusters hunter, based on supervised and unsupervised feedforward neural network, and a massive lesions searcher, based on a hibrid approach. Both the algorithms analyzed preprocessed digitized images by high frequency filters. Clinical tests were performed to evaluate sensitivity and specificity of the system, considering the system as alone and as secon reader. Results show that the system is ready to be implemented by medical industry. The CALMA project, just ended, has its natural development in the GPCALMA (Grid Platform for CALMA) project, where distributed users join common resources (images, tools, statistical analysis).
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