Abstract
Pixel size is an important parameter in digital mammography because it directly influences both the image quality and the cost of the imaging system. We have investigated the effects of pixel/aperture sizes on image properties in digital mammography. Studies were made with a small field digital mammography unit (Seno Vision by GE Medical System, Milwaukee, WI) which provides a 30 μm×30 μm pixel/aperture size. Pixel-averaging was used to increase both sampling distance and aperture size. Sub-sampling was used to increase the sampling distance without altering the aperture size. The effective pixel size was increased by pixel-averaging or sub-sampling. A tilted slit camera was employed to measure the pre-sampling MTF. Uniform exposure images were used to measure SNRs and NEQs for various pixel sizes. Simulated microcalcifications of various sizes were imaged to evaluate the low contrast performance as well.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 159-166 |
| Number of pages | 8 |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 3977 |
| DOIs | |
| State | Published - 2000 |
| Event | Medical Imaging 2000: Physics of Medical Imaging - San Diego, CA, USA Duration: Feb 13 2000 → Feb 15 2000 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering