Daignostic Techniques

Echos refect of tissue boundaries The density of the object determines how many waves are reflected back. Lighter color= more dense Measures distance and size of tissue

Look for prenatal growth Sic-filled sacks Blind flow

A CT scanner emits a series of narrow beams through the human body as it moves through an arc. This data is transmitted to a computer, which builds up a 3-D cross-sectional picture of the part of the body and displays it on the screen.

CT can see all part of the body to diagnose disease or injury

A special machine emits (puts out) a small amount of ionising radiation. This radiation passes through your body and is captured on a special device to produce the image

Standard X-rays are performed for many reasons, including diagnosing tumors or bone injuries.

The test uses a safe, injectable radioactive chemical called a radiotracer and a device called a PET scanner. The scanner detects diseased cells that absorb large amounts of the radiotracer, which indicates a potential health problem

help diagnose cancer and assess cancer treatment. They can also assess certain heart and brain issues with the scan.

passing an electric current through coiled wires to create a temporary magnetic field in your body. A transmitter/receiver in the machine then sends and receives radio waves. The computer then uses these signals to make digital images of the scanned area of your body

Detect measure in soft tissues and internal organs

Ten small sticky patches called electrodes are put on your arms, legs and chest. These are connected by wires to an ECG machine which picks up the electrical signals that make your heart beat

Looking at heart rate

Sleep disorders Epilepsy Depth of anesthesia Coma/brain injury

small sensors are attached to the scalp to pick up the electrical signals produced by the brain.