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Sonography
Glossary Terms
105
Other
Graduate
04/17/2013

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Term
A-Mode
Definition
A one-dimensional representation of a refelcted sound wabe in diagnostic scan. Also known as amplitude modulation.
Term
Abdomen
Definition
The large inferior cavity of the trunk, extending from the diaphragm to the brim of the pelvis. It is divided artificially into nine regions: right hypochondriac, epigastric, left hypochondriac, right lumbar, umbilical, left lumbar, right inguinal, hypogastric, and left inguinal regions.
Term
Abduction
Definition
Withdrawal (movement away)of a part from the axis of the trunk or extremity.
Term
Aberrant
Definition
Varying or deviating from normal form, structure, or course.
Term
Abortion
Definition
The expulsion of the embryo or fetus from uterus any time before week 28 of pregnancy, either by natural or by artificially induced means.
Term
Abruptio
Definition
A tearing away.
Term
Abruptio placentae
Definition
Premature separation of the placenta.
Term
Abscess
Definition
A pus-filled cavity that can develop anywhere, for example, on the skin or in any internal organ. Antibiotics may be helpful, but draining may be necessary to remove the pus.
Term
Accountability
Definition
Being required to answer for one's actions.
Term
Accreditation
Definition
The process that recognizes a school or institution for demonstrated ability in a special are of practice or training and authorizes that school or institution to instruct students in that area. Currently, accreditation exists for diagnostic medical sonography programs, diagnostic ultrasound laboratories, and facilities.
Term
Acute
Definition
Describes sudden onset of relatively severe or sharp manifestations that run a short course. Acute problems may be mild or severe.
Term
Acute abdomen
Definition
An acute pathologic condition within the belly that requires prompt surgical intervention.
Term
Addison disease
Definition
A disease resulting from decreased function of the adrenal glands.
Term
Adduction
Definition
Any movement of one part of a limb toward another or toward the midline of the body.
Term
Adhesion
Definition
Abnormal union of an organ or part to another by fibrous attachment.
Term
Adipose
Definition
Fatty, fatlike.
Term
Adnexa
Definition
Accessory parts or appendages of an organ.
Term
Adrenaline
Definition
Also known as epinephrine. A hormone produced by the adrenal glands. Available in drug form to improve breathing for persons with asthma, to treat sevre allergic reactions, or to stimulate the heart in cardic arrest.
Term
Advance directive
Definition
A legal document that helps ensure a person's health care wishes will be respected if he or she becomes unable to speak or otherwise communicate.
Term
Aerobe
Definition
A microorganism that can survive and replicate only when free oxygen is present.
Term
Agency for Healthcare Research and Quality (AHRQ)
Definition
A government agency whose mission is to improve the quality, safety, efficiency, and effectiveness of health care for all Americans.
Term
Airway
Definition
A respiratory passage. Any of several devices used to maintain a clear and unobstructed respiratory passage.
Term
Albuminuria
Definition
Presence of protein or albumin in the urine.
Term
Allergen
Definition
A substance that induces an allergic state or reaction.
Term
Alpha-fetoprotein assay (AFP)
Definition
AFP is a fetal protein normally found in the maternal blood. Increased and decreased AFP amounts are associated with abnormalities. The test is performed usually at 16 weeks' gestation. AFP levels within a normal range indicate low risk for fetal anomalies; higher AFP levels indicate an increased risk of neural tube defects, other fetal abnormalities, and threatend abortion; lower AFP levels indicate an increased risk of Trisomy 21, other rare genetic disorders, or impending fetal demise.
Term
Ambulatory
Definition
Walking or able to walk; designating a patient not confined to bed.
Term
Amenorrhea
Definition
Absence of menses.
Term
American Hospital Association (AHA)
Definition
A non profit association of health care provider organizations that are committed to the health improvement of their communities.
Term
Amniography
Definition
Radiographic visualization of the fetus by injection of a dye through the abdominal wall and into the amniotic sac.
Term
Amniotic band syndrome
Definition
The firm attachment of adjacent serous membranes by bands or masses of fibrous connective tissue; caused by organization and scarring of exudates, resulting from infection of partial destruction of the surfaces.
Term
Amniotic fluid index (AFI)
Definition
A method of estimating the volume of amniotic fluid present in second and third trimester pregnancies.
Term
Analgesia
Definition
The absence of pain; usually denotes relief of pain without loss of consciousness.
Term
Analog scan converter
Definition
A device in which data are represented by continuosly variable, measurable, physical quantities such as length, width, voltage, or pressure.
Term
Anasarca
Definition
Massive generalized edema.
Term
Anastomosis
Definition
The joining of structures.
Term
Anechoic
Definition
Free from echoes, completely absorbing sound waves.
Term
Anemia
Definition
Low level of hemoglobin, the red blood cell chemical that carries oxygen to body tissues.
Term
Aneursym
Definition
Weakening of a blood vessel because of disease, age, injury, or congenital defect. Rupture of teh weakend wall is usually life threating.
Term
Angina
Definition
Severe, often choking chest pain.
Term
Angiogram
Definition
Visualization of the blood vessels with x-ray examination.
Term
Angioplasty
Definition
Surgical opening of a clogged blood vessel by inflating a balloon adn stretching the wall. Often performed after a heart attack, along with the administration of clot-dissolving medication.
Term
Anoxia
Definition
Lack of oxygen. Absence of oxygen in the tissues.
Term
Antibody
Definition
An immunoglobulin molecule that reacts specifically with a substance (antigen) that induced its synthesis or with a closely related antigen.
Term
Antiseptic
Definition
An agent that inhibits microorganisms.
Term
Anuria
Definition
Lack of urine production. The absence of excretion of urine from the body.
Term
Aorta
Definition
The main artery through which blood leaves the heart for distribution to the rest of the body.
Term
Aphasia
Definition
Defect or loss of power of expression in speech, writing, or signs or loss of comprehension of spoken or written language because of injury or disease of brain centers.
Term
Aplasia
Definition
Lack of development of an organ or tissue or of the cellular products from an organ or tissue.
Term
Apnea
Definition
Cessation of breathing for short periods of time (sleep apnea) or for prolonged and potentially life-threatening periods of time(premature babies).
Term
Arrhythmia
Definition
Abnormality of heart rate or rhythm, or both.
Term
Arteriosclerosis
Definition
Hardening and loss of elasticity of the arterial wall. Common with aging and in certain diseases. Term often used interchangeably with atherosclerosis, a thickening of the inner wall of blood vessels from cholesterol deposits.
Term
Artifact
Definition
A man-made artifical structure or changed appearance.
Term
Ascites
Definition
An abnormal collection of serous fluid in the peritoneal cavity.
Term
Aseptic/asepsis
Definition
Sterile, free of microorganisms.
Term
Assault
Definition
A threat to inflict physical injury on another person through force or violence. Included is the touching of another person without that person's consent, with intent to harm.
Term
Association
Definition
A connection in the mind between ideas, sensations, and memories.
Term
Asymptomatic
Definition
Showing or causing no symptoms.
Term
Ataxia
Definition
Failure of muscular coordination.
Term
Atherosclerosis
Definition
A form of arteriosclerosis.
Term
Atrophy
Definition
Diminution in the size of a cell, tissue, or organ.
Term
Attenuation
Definition
To weaken or lessen in intensity.
Term
Attitude
Definition
A manner of acting or thinking that shows one's disposition, opinions, and reactions.
Term
Auscultation
Definition
Listening for body sounds with the aid of a stethoscope.
Term
Autoclave
Definition
A device that sterilizes by steam under pressure.
Term
Autonomic nervous system
Definition
Part of the nervous system that regulates involuntary life maintaining activities such as heart beat, respiration, and hormone secretion.
Term
Autonomy
Definition
The right to make our own decisions; to be independent and self-governing.
Term
Axillary
Definition
A small pyramidal space between the upper lateral part of the chest and medial side of the arm that includes the armpit, axillary vessels, bracial nerve plexus, and large numbers of lymph nodes.
Term
Azotemia
Definition
An excess of urea or other nitrogenous substances in the blood.
Term
Calculus
Definition
A stonelike formation, usually composed of mineral salts.
Term
Caliper
Definition
A manual or electronic instrument used to measure thickness or diameter.
Term
Cannula
Definition
A small tube for insertion into a body cavity.
Term
Carcinogen
Definition
An environmental agent that can produce cancer.
Term
Carcinoma
Definition
Malignant neoplasm arising from certain tissues. Carcionoma in situ describes an early stage of cancer that is highly invasive.
Term
Cardiac arrest
Definition
The heart and breathing stop suddenly without warning.
Term
Cardiac output
Definition
The amount of blood in liters per minute flowing through the systemic circulation.
Term
Cardiology
Definition
Medical specialty that deals with disorders of the heart and cardiac vasculature.
Term
Cardiomegaly
Definition
Englargement of the heart (cardiac hypertrophy).
Term
Cardiopulmonary resuscitation (CPR)
Definition
Emergency techniques used on a patient whose heart has stopped or who is not breathing, or both.
Term
Catherization
Definition
Passing of a small tube through an opening into the body(e.g.,blood vessel, urethra) to instill or remove fluid.
Term
Catheterize
Definition
The introduction of a hollow tube into a body cavity, such as the urinary bladder, to draw off fluid.
Term
Cause
Definition
A reason, motive, or grounds for bringing a legal action, to be resolved by a court of law.
Term
Cavitation
Definition
The formation of cavities in a body tissue or an organ resulting from the sudden formation and collapse of low-pressure bubbles by means of mechanical forces.
Term
Centers for Medicare and Medicaid Services (CMS)
Definition
Formerly known as the Health Care Financing Administration (HCFA). CMS is the federal agency within the Department of Health and Human Services that is responsible for the national administration of the Medicaid, Medicare, and State Children's Health Insurance Program (SCHIP).
Term
Cerebral vascular accident (CVA)
Definition
Pathologic condition of a blood vessel in the brain, either rupture or occlusion, with formation of a blood cot.
Term
Certification
Definition
The process by which an individual institution or educational program is evaluated and recognized as meeting certain predetermined standards.
Term
Chemotheraphy
Definition
Treatment of a disease by means of administering chemicals.
Term
Cholecystectomy
Definition
Surgical removal of the gallbladder.
Term
Cholecystitis
Definition
Infection of the gallbladder.
Term
Cholecystogram
Definition
An x-ray procedure used to visualize the gallbladder.
Term
Cholecystogram
Definition
An x-ray procedure used to visualize the gallbladder.
Term
Cholelithiasis
Definition
Gallstones.
Term
*Chorionic villus sampling (CVS)
Definition
The CVS test/procedure is a form of prenatal diagnosis to determine genetic abnormalities in the fetus in which a sample of the chorionic villi is obtained and tested.
Term
Chronic
Definition
Persisting over a long period; denotinga disease of slow progress and long continuance.
Term
Cirrhosis
Definition
Hardening of an organ.
Term
Civil law
Definition
All laws that affect the individual rather than the whole of society.
Term
Clustering
Definition
Gathering of things of the same sort.
Term
Code of conduct
Definition
The moral code, which guides the members of a profession in the proper conduct of their duties and obligations.
Term
Colostomy
Definition
Surgical procedure to form an artificial opening into the large bowel.
Term
Common law
Definition
Laws based on custom, usage, and decisions of the court.
Term
Communication barriers
Definition
Fast talking, using slang or medical jargon, making it difficult for the listener to understand the message. Speaking a language foreign to the listener.
Term
Communication triads
Definition
A coalition formed by three people in a social situation, for exchanging information.
Term
Compassion fatigue
Definition
Lessening or loss of sympathy for the misfortune of others, caused by over work and excessive emotional demands.
Term
Computerized axial tomography (CAT/CT scan)
Definition
An x-ray imaging modality that produces detailed cross-sectional images of the soft tissue and bony structures.
Term
Conscious sedation
Definition
A type of sedation to induce an altered state of consciousness that minimizes pain and discomfort through the use of pain relievers and sedatives. Patients who receive conscious sedation usually are able to speak and respond to verbal cues throughout the procedure, communicating any discomfort they experience to the provider. A brief period of amnesia may erase any memory of the procedure.
Term
Congenital
Definition
Present at birth. Congenital problems can be inherited, the result of infection or drug use in the mother, or the effect of uterine abnormalities.
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