About ERA

Eastern Radiological Associates (ERA) is a professional partnership of board certified radiologists (doctors trained in medical imaging and image interpretation) who have been providing radiology professional services since 1970. Our mission is simple. Eastern Radiological Associates serves the patient and physician community of the region (Montana, Wyoming, and surrounding) by providing the highest quality diagnostic imaging and interventional services in a caring and compassionate atmosphere. ERA provides a full range of professional radiology...

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Meet the Radiologists


Mitchell Gallagher, MD

Dr. Mitch Gallagher, a graduate of Carroll College, was born and raised in Montana. He attended The University of Chicago, Pritzker School of Medicine. He completed a residency in Internal Medicine at the University of Iowa, Hospitals and Clinics. Radiology Residency and Fellowship in Combined Diagnostic Radiology at the University of California, San Diego. Dr. Gallagher, a Diagnostic Radiologist, joined ERA in 1989 and is a Diplomat of the American Board of Radiology.

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X-RAY technology lets doctors see straight through human tissue to examine broken bones, cavities and swallowed objects. Modified X-ray procedures can be used to examine softer tissue, such as the lungs, blood vessels or the intestines. The X-ray camera uses the same film technology as an ordinary camera, but X-ray light sets off the chemical reaction instead of visible light. 

Uterine Fibroid Embolization

What is uterine fibroid embolization? Uterine fibroid embolization is a way to treat fibroids of the uterus without surgery. Fibroids are masses of fibrous muscle tissue in the uterine wall. These fibroids are often painful and cause heavy menstrual bleeding. How is uterine fibroid embolization done? In uterine fibroid embolization a small tube called a catheter is inserted in the groin area and guided to the blood vessels that deliver blood to the uterus. Once the catheter is in place, Dr. Christenson will infuse small particles into the vessel,...

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Fluoroscopy is a study of moving body structures–similar to an X-ray “movie.” A continuous X-ray beam is passed through the body part being examined. The beam is transmitted to a TV-like monitor so that the body part and its motion can be seen in detail. Read more: http://www.radiologyinfo.org/en/info.cfm?pg=modbariumswallow