Ultrasound Explained

10. Advantages and Disadvantages

Ultrasound has an excellent safety record. It does not use the ionizing radiation of X-rays and computed tomography scans (CT scans), making it the best option for use during pregnancy. It produces realtime images demonstrating the movement of structures, which allows assessment of their function. It is a painless procedure, causing only minor discomfort at times. The equipment is relatively inexpensive and can be small and portable, ideal for bedside investigations. These are the main advantages of ultrasound scanning.

There are several disadvantages which can limit the use of ultrasound in some areas. Ultrasound waves cannot penetrate bone, therefore scanning the brain is not possible. Certain gas-containing areas, such as the intestine, do not deliver good ultrasound imaging results. Additionally, obesity can make it difficult to image structures deep in the body.