Abstract
Tissue-equivalent phantoms are desirable for evaluation of image quality and dose in diagnostic radiology. A simple and inexpensive method for fabricating tissue-equivalent phantoms simulating soft tissues for use in radiologic imaging is presented. The tissue-equivalent materials are based on the combination of three basic constituents whose quantity, within limits, can be independently adjusted. Protein is supplied by the use of gelatin (collagen) mixed with water to form a gel, and lipid can be supplied using one of a variety of animal or vegetable fats. CT phantoms have been constructed with simulated tumours in a liver background. Contrast down to 0.1% can be reliably produced. Mammographic phantoms have been produced simulating compressed breasts. A gel step wedge is used to measure image contrast. Simulated tumours with a spiculated border are cast into individual steps to assess tumour visability over a range of optical densities.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call