Glossary

 
  • Arthrogram

    Imaging of a joint (such as the knee) following the injection of a contrast agent into the joint capsule to enhance the visualization of the joint structures.

  • Bone Density

    A bone density scan is a low-dose x-ray which checks an area of the body such as the hip, hand or foot for signs of mineral loss and bone thinning. There are four different types: 1) Dual energy X-ray absorptiometry (DEXA), 2) Peripheral dual energy X-ray absorptiometry (PDEXA), 3) Dual photon absorptiometry (DPA), and 4) Ultrasound.

  • Bone Scan

    A bone scan is a Nuclear Medicine test that identifies new areas of bone growth and/or breakdown. It can be done to detect and/or evaluate damage to the bones, to detect cancer that has spread to the bone, and to detect infection and trauma. It can often detect problems days to months earlier than regular X-ray testing.

  • CT/CAT Scan

    A computed tomography (CT) scan is a special type of X-ray that uses a computer to combine many separate x-rays to produce detailed pictures of structures inside the body. A CT scan is also called a computerized axial tomography (CAT) scan.

  • EMG & NCS

    EMG & NCS (Electromyogram and Nerve Conduction Study) is a diagnostic test for evaluation of conditions involving the muscles and/or the nerves. It is done in three parts: a history and physical exam to tailor the EMG to the patient’s unique circumstances, the EMG (muscle) portion and the NCS (nerve) portion. It is used to determine the health and functioning of muscles and nerves. While it is possible to do the parts separately, they should be done together for the most accurate results per the American Association of Neuromuscular & Electrodiagnostic Medicine.

  • Fluoroscopy

    Fluoroscopy uses a continuous beam of X-rays to evaluate structures and movement within the body. It can be used to help a health professional locate a foreign object in the body, position a catheter or needle for a procedure, or realign a broken bone.

  • MRI

    Magnetic resonance imaging (MRI) is a test that uses a magnetic field and pulses of radio wave energy to provide pictures of organs and structures inside the body. In many cases, MRI provides information that cannot be obtained from an X-ray, ultrasound, or CT scan. The main contrast medium for MRI is Gadolinium.

  • Myelogram

    Myelography is an X-ray study of the spinal canal. A dye (contrast material) that contains iodine is injected into the fluid-filled space (called the subarachnoid space) that surrounds the spinal cord and nerve roots; this makes them visible on X-ray pictures. X-ray (or CT) pictures are taken as the contrast material moves into different areas of the subarachnoid space.

  • PET Scan

    Positron emission tomography (or PET scan) is a test that combines computed tomography (CT) and nuclear scanning. During a PET scan, a radioactive substance called a tracer is combined with a chemical substance and either inhaled or injected into a vein. The tracer emits tiny, positively charged particles (called positrons) that produce signals. A special camera records the tracer's signals as it travels through the body and collects in organs. A computer then converts the signals into three-dimensional images of the examined organ. PET scans provide information about an organ's function (metabolism).

  • X-Ray

    X-rays are a form of radiation, like light or radio waves, that can pass through many objects,waves that can pass through many objects including the human body. When X-rays strike a piece of photographic film, they produce a picture. This can be used to create a pictures of the body structures such as the bones, organs, muscles and blood vessels. The denser the material, such as bone, the clearer the picture is.

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