Operational for more than 30 years, Trist n Associates is a provider of diagnostic services to patients throughout Pennsylvania. The organization offers stereotactic breast, ultrasound-guided breast and thyroid and prostate biopsies. It provides nuclear medicine tests that evaluate anatomy and organ system functions. The organization also offers CT scans to diagnose the conditions of organs, including brain, liver and kidneys. Trist n Associates performs fluoroscopy and X-ray examinations, as well as digital mammography. It additionally performs magnetic resonance imaging and bone densitometry tests. The organization is accredited by American College of Radiology. Trist n Associates maintains the Diagnostic Center/Women's Imaging Center in Harrisburg, Pa.