The Brain and Spine Institute is made up of experts in the field of neuroscience in order to bring patients the best healthcare in East Tennessee for a full range of neurological diseases and disorders.
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Centers of Excellence
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We provide a comprehensive continuum of cancer services, including prevention, outreach, diagnostic, treatment and support services delivered by our highly skilled staff with compassion and care.
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The Center for Women & Children's Health is a hub for supporting women's and children's individual healthcare needs. The center provides support, research and unmatched patient-centered care.
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Emergency and Trauma Services is the only Level I Trauma Center in the area and serves as the tertiary referral center for medical care in East Tennessee, serving Knox County and 21 surrounding counties.
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The Heart Lung Vascular Institute brings together expertise in clinical care, teaching and research. Patients receive exceptional healthcare combined with patient-centered care.
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Ions
Definition
An ion is an atom or group of atoms that has an electric charge. Ions with a positive charge are called cations. Ions with a negative charge are called anions.
Many normal substances exist in the body as ions. Common examples include sodium, potassium, calcium, chloride, and bicarbonate. (See: Electrolytes)
Ions can be created using radiation such as x-rays. Ionizing radiation is often used for diagnostic or therapeutic procedures, since the ions that are produced can be used to scan for or treat some diseases.
Related topics:
- Adrenal medullary imaging
- Bone scan
- Gall bladder radionuclide scan
- Gallium (GA) scan
- Isotope study
- Liver scan
- Lung gallium (GA) scan
- Nuclear ventriculography (MUGA or RNV)
- Pulmonary ventilation/perfusion scan
- Radiation therapy
- Radioactive iodine uptake
- Radionuclide cystogram
- Renal venogram
- RHISA scan
- Thyroid scan
- WBC (nuclear) scan
Alternative Names
Cations; Anions
Information
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