Ultrasound Diagnostic

Date: 2015-10-07; view: 443.

Ultrasound scanning or sonography, uses high-frequency sound waves to obtain images inside the body. It analyzes blood flow in the brain and can diagnose stroke, brain tumors, hydrocephalus (build-up of cerebrospinal fluid in the brain), and vascular problems. It can also identify or rule out inflammatory processes causing pain. It can show tears in ligaments, muscles, tendons, and other soft tissue masses in the back.

During ultrasound, the patient lies on an imaging table and removes clothing around the area of the body to be scanned. A jelly-like lubricant is applied and a transducer, which both sends and receives high-frequency sound waves, is passed over the body. The sound wave echoes are recorded and displayed as a computer-generated real-time visual image of the structure or tissue being examined. Ultrasound is painless, noninvasive, and risk-free. The test takes between 15 and 30 minutes to complete.

Scientists continue to develop additional and improved screening methods to more accurately and quickly confirm a specific diagnosis and allow scientists to investigate other factors that might contribute to disease. Technological advances in imaging will allow researchers to better see inside the body, at less risk to the patient. These diagnostics and procedures will continue to be important clinical research tools for confirming a neurological disorder, charting disease progression, and monitoring therapeutic effect.

7. Look through the texts and find information about:

a.the advantages of modern diagnostic equipment

b.importance of clinical research tools for confirming disorders

c.the disadvantages of diagnostic tools

8. Scan the texts again and answer: true, false or no information. Explain your answers with the information from the text:

a. medical equipment can create pictures of the structures and activities inside the body;

b. types of diagnostic imaging are electromagnetic waves;

c. in physics radiation describes any process in which energy emitted by one body travels space to be absorbed by another body;

d.CT scan is a painful procedure;

e. EEG is used to evaluate to sleep disorders only;

f. MRI can take up to 5 minutes to complete;

g. SPECT is used to evaluate certain brain functions;

h. scientists do not develop improved diagnostic methods