The Contrast Detail Phantom for Mammography 18 252 is designed to provide a means of quantitatively testing and monitoring the total performance of an entire mammographic imaging chain. Its small size, as well as the number and distribution of holes simulating embedded objects, make this phantom particularly useful in evaluating digital spot mammography systems. With 49 holes generating subtle contrast variations, the phantom makes it possible to detect small changes in overall system performance. The Contrast Detail Phantom forMammography contains a 7 x 7 matrix of objects. The diameter of each row of objects decreases from 0.169 to 0.007 inch. In each row, the subject contrast decreases from approximately 6.6% to 0.41% at mammographic energies.
Applications
The Contrast Detail Phantom for Mammography is easy to use…Simply place the phantom on the image receptor surface in the same position as a breast. Position the x-ray tube and compression device as in a craniocaudal examination.When using the phan on prone-position breast biopsy systems, use the rotating top plate of the phantom and the compression device to secure the phantom against the image receptor. Choose the appropriate kV and mAs factors (26 kV and 60 mAs works well on most systems), or select automatic exposure control.
Features
Optimized for digital imaging
Easy-to-use, compact and lightweight
Closely simulates scatteringconditions of the breast
Rotatable support plate accommodates prone-position x-ray units. The plate can be returned to a position which does not interfere with placement of the phantom on flat surfaces
Geometrically-increasing hole depths result in linearly-increasing x-ray transmission
Geometrically-increasing hole diameters enable quantitative measurement of the contrast threshold of the mammographic system
