1 resultado para spatial frequency

em Repositório Científico do Instituto Politécnico de Lisboa - Portugal


Relevância:

60.00% 60.00%

Publicador:

Resumo:

Mammography is one of the most technically demanding examinations in radiology, and it requires X-ray technology designed specifi cally for the task. The pathology to be imaged ranges from small (20–100 μm) high density microcalcifications to ill-defi ned low contrast masses. These must be imaged against a background of mixed densities. This makes demonstrating pathology challenging. Because of its use in asymptomatic screening, mammography must also employ as low a radiation dose as possible.