Mammography and Breast Diseases

In this latest book of Dr. Egan two aspects of mammography, not stressed in his first book in 1964, are presented in detail. The first is a detailed discussion of the methods used in the physical evaluation of the mammographic technique. Experiments are presented demonstrating the failure of conventional x-ray units, designed to operate at or above 50 kilovolt peak, to deliver adequate milliamperage and a satisfactory wave form at low kilovolt peak range. The effects on film quality of smaller focal spots, shorter object-film distances, and off-focus radiation are also presented. The four most important factors affecting roentgenographic detail are motion, object-film distance, columnation, and film type and processing, and Egan presents appropriate tests for evaluating each of these factors. The second aspect and the most important new information in this volume is a detailed discussion of the correlated clinical, radiographic, and pathologic approach to the study of breast