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. Did you know? We are involved in the Yellowstone community… learn...

Read More

Meet the Radiologists

Adam Delavan MD

Adam Delavan, MD

Adam Delavan is a board-certified radiologist. He is fellowship/sub-specialty trained in pediatric radiology and musculoskeletal radiology.

Read More

Services

View all

Angiography

angiography

What is CT Angiography? Angiography is a minimally invasive medical test that helps physicians diagnose and treat medical conditions. Angiography uses one of three imaging technologies and, in most cases, a contrast material injection is needed to produce pictures of blood vessels in the body. Angiography is performed using: x-rays with catheters computed tomography (CT) magnetic resonance imaging (MRI) CT angiography uses a CT scanner to produce detailed images of both blood vessels and tissues in various parts of the body. An iodine-rich contrast...

Read More

Ultrasound

ultrasound

Diagnostic Ultrasound, also called ultrasound scanning or sonography, produces pictures of the inside of the body using sound waves. It involves the use of a small transducer (probe) and ultrasound gel placed directly on the skin. High-frequency sound waves are transmitted from the probe through the gel into the body. The transducer collects the sounds that bounce back and a computer then uses those sound waves to create an image. Ultrasound examinations do not use ionizing radiation (as used in x-rays), thus there is no radiation exposure to the...

Read More

Tumor Cryoablation

Tumor-Cryoablation

What is tumor cyroablation? Tumor cryoablation is a procedure that uses extreme cold to freeze and destroy cancer cells. Cryoablation is used to treat tumors of the kidney. How is tumor cyroablation done? A needle-like applicator will be placed in contact with the tumor, more than one applicator may be used depending on the tumor size and location. Dr. Christenson will use ultrasound and other x-ray imaging to guide the applicator(s) to the treatment site. Once the applicator is in the correct location, Dr. Christenson will administer argon gas...

Read More