14-06-2014, 18:32
Digital Mammography Imaging: Breast Tomosynthesis and Advanced Applications
Digital breast tomosynthesis mammography (DBT) is one technology being developed to improve detection and characterization of breast lesions especially in women with non-fatty breasts. In this technique, multiple projection images are reconstructed allowing visual review of thin breast sections offering the potential to unmask cancers obscured by normal tissue located above and below the lesion. DBT involves the acquisition of multiple projection exposures by a digital detector from a mammographic X-Ray source which moves over a limited arc angle [2-11]. These projection image data sets are reconstructed using specific algorithms. The clinical reader is presented with a series of images (slices) through the entire breast that are read at a workstation similar to review of a CT or MRI study. Because each reconstructed slice may be as thin as 0.5 mm, masses and mass margins that may otherwise be superimposed with out of plane structures should be more visible in the reconstructed slice. This should allow visualization (detection) and better characterization of non-calcified lesions in particular.
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3118307/
Digital breast tomosynthesis mammography (DBT) is one technology being developed to improve detection and characterization of breast lesions especially in women with non-fatty breasts. In this technique, multiple projection images are reconstructed allowing visual review of thin breast sections offering the potential to unmask cancers obscured by normal tissue located above and below the lesion. DBT involves the acquisition of multiple projection exposures by a digital detector from a mammographic X-Ray source which moves over a limited arc angle [2-11]. These projection image data sets are reconstructed using specific algorithms. The clinical reader is presented with a series of images (slices) through the entire breast that are read at a workstation similar to review of a CT or MRI study. Because each reconstructed slice may be as thin as 0.5 mm, masses and mass margins that may otherwise be superimposed with out of plane structures should be more visible in the reconstructed slice. This should allow visualization (detection) and better characterization of non-calcified lesions in particular.
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3118307/