Modeling, validation and application of a mathematical tissue-equivalent breast phantom for linear slot-scanning digital mammography.
This paper presents a mathematical tissue-equivalent breast phantom for linear slot-scanning digital mammography. A recently developed prototype linear slot-scanning digital mammography system was used for model validation; image quality metrics such as image contrast and contrast-to-noise ratio were calculated. The results were in good agreement with values measured using a physical breast-equivalent phantom designed for mammography. The estimated pixel intensity of the mathematical phantom, the analogue-to-digital conversion gain and the detector additive noise showed good agreement with measured values with correlation of nearly 1. An application of the model, to examine the feasibility of using a monochromatic filter for dose reduction and improvement of image quality in slot-scanning digital mammography, is presented.
Hussein
K
K
MRC/UCT Medical Imaging Research Unit, Department of Human Biology, University of Cape Town, Observatory 7935 South Africa.
Vaughan
C L
CL
Douglas
T S
TS
D001940:Breast / Q000166:cytology*; D005240:Feasibility Studies; D007091:Image Processing, Computer-Assisted; D008327:Mammography / Q000295:instrumentation*; D008954:Models, Biological; D019047:Phantoms, Imaging; D011829:Radiation Dosage; D011856:Radiographic Image Enhancement / Q000295:instrumentation*; D012984:Software