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Radiology & Imaging

Medical Imaging is one of the most important tools the doctor has for diagnosing and treating your medical condition. Our Imaging Services provide the highest standards of imaging for every patient.

During a PET scan, a radioactive substance called a tracer is combined with an inert chemical (such as glucose). This “traceable” solution is then injected into a patient’s vein in the arm or hand. The PET/CT scanner simultaneously applies two powerful imaging technologies - the functional images of PET and the anatomical images of CT - to allow physicians to "see" clear pictures of not only complex body structures but also dynamic metabolic processes as they are occurring. Hailed as one of the most significant advances in modern cancer treatment, PET/CT helps doctors detect and treat very small malignancies.

Tomography (CT)

CT scans were developed originally to diagnose brain disorders. They are now used to collect images of tissues throughout the entire body. The clarity and detail provided by a scan often make it unnecessary for patients to undergo exploratory surgery. Modern CT scanners create only an ultra-thin, low dose X-ray beam, so radiation exposure is minimized. CT scans provide greater detail than standard x-rays and can provide a more detailed visualization of the internal organs and soft tissues.

Diagnostic Radiology

The Diagnostic Radiology Department performs standard radiographic and fluoroscopic imaging studies including procedures such as x-rays to detect broken bones, evaluate lung function and gastrointestinal disease processes. Diagnostic Radiology also performs exams during surgical procedures.

Interventional Radiology

The hospital’s Vascular Interventional Lab (VIL) provides diagnostic and treatment options such as angiograms for diseases of the vascular system and visceral organs. They use fluoroscopy (X-rays) to perform minimally invasive procedures in treating such problems as clogged arteries in areas of the body other than the heart such as the arms, legs and kidneys. The latest addition to our Vascular Interventional Lab capabilities is the use of lasers to directly remove the plaques and blood clots that threaten blood flow to the legs and feet. This exciting, new device can reduce the need for amputation in patients with severe peripheral vascular disease and improve the quality of life for those with less severe disease.

Diagnostic Ultrasound and Echocardiography

Ultrasound or Sonography uses sound waves to detect abnormalities in many parts the body. Internal organs and structures reflect the sound waves. Special instruments create an image of the desired area then interpret the reflections. Echocardiographic testing uses sound waves to create an image of the heart. This non-invasive test is particularly useful in detecting and managing heart disease and is one of the standard tools applied by cardiologists.

Nuclear Medicine

Nuclear medicine uses a camera (detector) to create an image of certain tissues and organs in the body after a radioactive tracer (radionuclide or radioisotope) accumulates in the tissues. The radioactive tracer, usually injected into a vein, allows images to show how organs and tissues are functioning. Our Imaging Department has two nuclear medicine camera systems, both with two detectors for faster imaging. Nuclear Medicine exams include bone scans, thyroid uptake and scans, myocardial perfusion imaging (Cardiolite Stress Tests), hepatobiliary imaging, white blood cell imaging, parathyroid imaging, and kidney imaging.

Our Locations


  • Diagnostic Imaging Services
    St. Joseph Hospital
    2700 Dolbeer St
    Eureka, CA
    (707) 269-4215

    Diagnostic Imaging Services
    Outpatient Imaging Center
    2330 Buhne St
    Eureka, CA
    (707) 269-4240

    Diagnostic Imaging Services
    3300 Renner Dr
    Fortuna, CA 95540
    (707) 725-7327


  • Profili Imaging Center
    1000 Trancas Street
    Napa, CA 94558
    (707) 251-1700

    Medical Imaging
    1000 Trancas Street
    Napa, CA 94558
    (707) 257-4071

    1000 Trancas Street
    Napa, CA 94558
    (707) 257-4064

    Breast Center
    2431 Villa Lane
    Napa, CA 94558
    (707) 257-4047


  • Outpatient Imaging - Santa Rosa
    121 Sotoyome St
    Santa Rosa, Ca 95405
    (707) 525-4040

    Outpatient Imaging – Petaluma
    400 N. McDowell Blvd
    Petaluma, CA 94954
    (707) 778-2555

    Outpatient X-Ray
    500 Doyle Park Dr.
    Santa Rosa, CA 95405
    (707) 525-5369

    Diagnostic Cardiology
    500 Doyle Park Dr.
    Santa Rosa, CA 95405
    (707) 547-4606