The diagnostic imaging department of Good Samaritan Hospital is the premier provider of the highest quality and cost effective imaging services in the greater Bay Area. Our radiologists have met the rigorous standards of major medical and residency training programs and are board-certified by the American Board of Radiology.

Contact and scheduling

To schedule an outpatient imaging examination like a CT, MRI, ultrasound, PETCT or nuclear medicine, please call us at (855)495-1753.

For interventional radiology scheduling, please call (408) 559-2146.

To speak with one of our radiologists, please call (408) 559-2162.

CT scan

A computed tomography (CT) scan, which is also known as a CAT (computer axial tomography) scan, produces a series of cross-sectional images that can help your doctor detect certain conditions that do not show up on traditional x-rays. CT scans are able to image organs and tissues in addition to bones.

During a CT scan, the x-ray tube will move rapidly around a specific part of your body as you lie still on the table. This allows a thin beam of x-rays to target a specific part of your body. This x-ray beam is picked up by an electronic detector, which will record the information and feed it into a computer.

Once the images are in the computer, multiple pictures from different angles combine to make a cross-sectional picture. CT scans are typically painless and last a maximum of seven minutes.

PET/CT scan

The PET/CT scan combines the strengths of both a PET and CT into a single scan. PET scans produce images at the molecular level, while CT scans provide images of the body’s internal anatomy.

A CT scan is able to detect and localize changes in the body structure or anatomy, such as the size, shape and exact location of an abnormal growth, a sizeable tumor or musculoskeletal injury. PET scans are able to distinguish between living and dead tissue or between benign and malignant disorders.

By combining these two imaging tests, physicians can more accurately diagnose, localize and monitor cancer. This scan can last around three hours.


MRI, which stands for magnetic resonance imaging, is a non-invasive medical test that lets your doctor see various parts of your body without the need for surgery, which include:

  • Internal organs
  • Muscles
  • Joints
  • Tumors
  • Areas of infection

MRI machines use a magnetic field and radio frequency to provide detailed images, which means you will not be exposed to any radiation. MRI exams are painless, but it is vital for patients to hold still or else the images will be blurry.


An x-ray exam is typically used to take a closer look at your bones lungs or soft tissue. This is a quick and painless procedure that helps your doctor pinpoint the source of an injury, condition or disease. X-ray technology is most commonly used for:

  • Bone fractures
  • Arthritis/ joint problems
  • Osteoporosis
  • Bone cancer or infection
  • Lung infections
  • Blocked blood vessels
  • Enlarged heart


Ultrasound technologists are able to see inside the body using high-frequency sound waves. Ultrasounds are often used during pregnancy to provide images of the fetus.

An ultrasound uses a probe to project and receive the sound waves and the return signals. A gel is wiped onto the patient’s skin so that the sound waves are not distorted as they cross through the skin.

Ultrasounds can take a fair amount of time and require the probe to be repositioned and pointed in different directions. Additionally, the technician may need to vary the amount of pressure used to push the probe into the skin.