Category: T

A test done to determine how much blood is able to circulate through the heart muscle. The test is done by injecting a radioactive substance intravenously, followed by producing images of the heart with a scintillation camera or a scanner. Other heart-related tests (electrocardiogram, blood pressure measurements) are taken while the patient works out on…

A procedure in which an isotope of the metal Thallium is injected into the vein of a person who has been doing prescribed, measured exercises for some time. A gamma- scintillation camera is then used to take images of the heart muscle to check blood flow. A smaller than usual uptake of Thallium 201 in…

A test done to measure the ratio of ventilation to perfusion (blood flow through the capillaries) in the lung.  

A test done to measure the change in nitrogen concentration at the peak of exhalation after the patient takes a deep breath of oxygen.  

Measurement of the way in which carbon monoxide diffuses (moves) across the alveocapillary- erythrocyte membrane in the lung. Carbon monoxide is used because it is similar to oxygen, but easier to measure.  

A test done on blood or bone marrow to detect certain types of leukemia or lymphoma. For bone marrow cells, bone marrow aspiration must be done from the breast bone or the hip. A method of removing disease-causing organisms and their toxins from a room previously occupied by a patient who had an infectious disease.…

Pain in the region of the lower jawbone (mandible) and the temporal bone situated in front of the ear. Discomfort and additional symptoms involving the head, jaw, and face are believed to arise when there is an improper coordination between the temporomandibular joints and the associated muscles and ligaments. Frequent trigger of temporomandibular joint dysfunction…

A test done to determine whether and to what extent heart muscle has been damaged after a heart attack. The test is done by injecting intravenously first a tracer isotope, and, several hours later, a radioactive chemical. A scintillation camera or scanner is then used to take multiple images of the heart. The results indicate…

Sensitivity to tartrazine, a substance found in some foods (eg, sweet potatoes) and used as a color additive in foods and drugs.  

A test done on the eyes to detect visual field loss or increase or decrease in visual field loss.