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Description of Imaging Tests
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Breast Imaging and Intervention
Mammography is the study of the breast and its diseases, and usually refers specifically to the use of dedicated high resolution x-ray systems to make detailed images of the breast in order to screen for tumors (and or other irregularities that could signal the presence of breast disease). Mammographers do however use other tools to assess breast disease, including ultrasound and MRI. Some mammographers also perform procedures such as galactography (study of breast ducts), as well as biopsy.
CT (Computed Tomography)
Computed Tomography (CT) scans, also known as CAT Scans, produce multiple cross-sectional images of the body by using special X-rays and computer enhancements. This technology creates an image many times more sensitive and detailed than what is produced by a simple X-ray. Using a rotating ring containing a fan shaped X-ray beam, the body is X-rayed from many angles. Captured images are transferred to a computer and a detailed two-dimensional cross-section or "slice" of the body is generated. These "slices" can then be processed further to generate 3-D images which are viewable from many different angles. John Muir Medical Imaging Services feature a number of 16-slice CT scanners, as well as a 64-slice CT scanner for faster and better diagnosis.
Diagnostic Radiology
Diagnostic Radiology is a broad term that refers to the entire field of imaging, and the multitude of related techniques available to study the body. These include conventional radiography (x-rays), fluoroscopy (video examinations: such as upper GI series), computed tomography, ultrasound, nuclear medicine, magnetic resonance. Interventional radiology, while usually performed by radiologists, is often considered a complementary field.
MRI (Magnetic Resonance Imaging)
Magnetic Resonance Imaging (MRI) allows visualization of soft tissue (muscle, fat, and internal organs) without the use of x-rays or radiation. Using two natural safe forces - magnetic fields and radio waves, this unique imaging process can look through bones in order to examine soft tissues.
Nuclear Medicine
Nuclear medicine is a specialty that allows physicians to see what is taking place in specific areas of the body. Nuclear medicine is a technology whereby images are captured after the patient receives a tiny amount of radioactive tracer (radiopharmaceutical) internally. Most nuclear medicine exams are functional in nature, and provide information to the physician as to whether or not the function of an organ is impaired. We have the capability of performing faster scans using dual-head SPECT and dual-head SPECT/CT systems. Our SPECT/CT system is capable of combining CT and SPECT images (fusion images) for a better diagnosis. Utilization of hybrid technology (such as SPECT/CT), allows us to produce 3-dimensional fusion imaging. This capability provides anatomical detail, which allows our doctors to precisely locate the functional (metabolic) activity being studied.
Ultrasound (Sonography)
Ultrasound is a safe and painless imaging study. Ultrasound utilizes high frequency sound waves, without radiation, to generate images of the internal structures of the body. The reflected sound wave echoes are recorded and displayed as visually as an image. Because ultrasound images are captured in real-time, they can show movement of internal tissues and organs. Some of these include evaluation of the abdomen, including the gallbladder, liver, kidneys, pancreas, spleen, and appendix; the pelvis, including uterus and ovaries; obstetric exams; duplex doppler vascular studies, including leg veins, carotid artery and aorta; thyroid; scrotum and pediatric imaging; and breast ultrasound, including evaluation of breast nodules which often compliments mammography.
Fluoroscopy
Fluoroscopy is the study of moving body structures, such as digestive functions, in a live, movie-like sequence. It is a safe and generally non-invasive procedure. By means of this technology we are able to study moving body structures with exams such as Esophagram, Upper GI Series, Small Bowel Exam, Barium Enema, IVP, Hysterosalpingogram, and Urethrogram.
Mammography
A Mammogram is a type of procedure that uses a low-dose specialized X-ray system to examine the tissue of the breasts. Mammography is used to detect early breast cancer in women experiencing no symptoms and to detect and diagnose breast disease in women experiencing symptoms such as a lump, pain or nipple discharge. Mammography is a key to the early detection of breast cancer, and can often detect a lump in the breast before it can be felt. Additionally, a computer and computer-aided diagnosis (CAD) application helps a radiologist detect breast cancer at its earliest possible stage. Annual mammograms are recommended by the American Cancer Society for women who are 40 or older, or women at high-risk for breast cancer, including those with a family history. Additionally a Computer-aided diagnosis (CAD) application helps a Radiologist to detect breast cancer at the earliest stage possible.
Full-Field Digital Mammography
John Muir Medical Imaging provides high quality full field digital mammography using the Hologic Selenia System, the most advanced breast imaging technology available today.
We offer:
- Professionally licensed mammographers and a dedicated support staff
- Highly qualified radiologists
- Same day results for all diagnostic exams
- CAD, Computer Aided Detection to enhance the Radiologist's accuracy
- Reports promptly faxed to your ordering physician
- Results mailed directly to patients
- Centralized scheduling