ultrasound test is a radiology technique, which uses high- frequency sound waves to produce images of the organs and structures of the body. The sound waves are sent through body tissues with a device called a transducer. The transducer is placed directly on top of the skin, which has a gel applied to the surface. The sound waves that are sent by the transducer through the body are then reflected by internal structures as "echoes.

In Dr. Biller's study (sometimes referred to as "the Ohio study"), Dr. Biller was able to diagnose cats at 10 months of age with 98% accuracy (as determined by eventual histopathology exams after natural death or euthanasia). Given the many variables in real-world testing (the skill, training and experience of the sonographer; the ultrasound equipment; etc.), my personal opinion is that the real-world accuracy will be somewhat lower -- perhaps in the 90% to 95% range.

Ultrasound allows us to see the soft tissues in your body. Sound waves bounce off of things. You may be familiar with the use of sonar in submarines! The Ultrasound machine converts the echoes (or bounces of sound waves) into pictures. We can tell a lot about the contents of various parts of the body by using this simple, easily tolerated test. Ultrasound does not show us your bone structure; x-rays do that very well. The gall bladder is commonly evaluated with Ultrasound as a first test.

You will be asked to recline on an elevated bed beside the ultrasound machine, and move some of your clothing aside. A clear gel is placed on your belly, which helps the ultrasound waves make contact with your body (ultrasound waves travel very poorly through air). An ultrasound transducer will be moved across your belly to create the needed images. Most women are quite comfortable during the procedure, which usually takes between 20 to 40 minutes.

Medical ultrasound and AMI are based upon the same physics. However, medical ultrasound frequencies are usually in the range of 1-5 MHz whereas AMI are 15- 300MHz. The lower frequencies are needed in the medical environment because of the need to penetrate tissue thicknesses associated with the human body. There is an inverse relationship between penetration and resolution capability (frequency).

Doppler ultrasound is a procedure used to detect restricted or blocked arteries, or blood clots in the veins. The study is performed by a sonographer using a probe that is passed over a patient's neck, legs, arms, or abdomen. The probe emits harmless sound waves that create images of a patient's arteries and measure blood flow through the arteries. Unlike x-ray, ultrasound involves no radiation.

The preparation for an ultrasound examination depends on the type of examination your doctor has requested. For an abdominal scan, you will be instructed not to eat or drink for 6 hours before your appointment. This is important to allow optimal visualization of the abdominal organs, and to prevent the gallbladder from collapsing and becoming undetectable.

Ultrasound is an ideal screening study for the evaluation of many disorders of the abdomen and pelvis. However, ultrasound waves are reflected by air or gas, and thus bowel gas may obscure visualization of some areas of the abdomen and pelvis. In many cases, a CT scan will provide a more thorough evaluation of the abdomen. For the evaluation of pelvic disorders, MRI may provide additional information and superior characterization of internal organs and diseases.

Answer: The first step in finding the right treatment for damaged veins is finding its source. A Doppler Duplex Ultrasound Scan provides a visual window, revealing the diseased, refluxing veins beneath the skin's surface. With this diagnostic capability, we can pinpoint the exact cause of varicose veins and customize a treatment plan for each individual patient - and each damaged vein.

According to the ACR (American College of Radiology), an ultrasound is not used as a screening tool for breast imaging. An ultrasound is used in conjunction with a mammogram to image the breast tissue differently. It can tell if images in the breast are fluid filled, a cyst, a benign condition, or is a solid nodule. Not all solid nodules are cancer. Ultrasound can detect abnormalities in the breast via sound waves. There is no radiation with an ultrasound.

Like Radar and Sonar, Ultrasound uses the echoes of sound waves to produce images. In the case of Ultrasound, these sound waves are transmitted through a transducer, and partially reflected back to the transducer by the body's tissue. Human hearing is typically in the frequency range under 18,000 Hz (18 kHz). Bats and whales use frequencies in the range of 100 kHz. In contrast, Ultrasound uses frequencies above 1 MHz (1,000,000 Hz).