Ultrasound vs sonogram skin#
Ultrasounds use a probe called a transducer that is placed directly on the skin or inside the body, such as in a transvaginal ultrasound. The techniques used to capture images in sonography and CT scans are different. CT scans are better used for detecting certain cancer tumors or other abnormalities within the body. Ultrasounds are routinely used in prenatal care and other procedures such as the removal of gall stones or kidney stones. In contrast, CT scans can provide detailed images of soft tissues, bones, and blood vessels. Ultrasounds are not typically ordered for images of bony structures.
Ultrasounds have some limitations to the structures they can find, and this is usually limited to internal organs. Because of the radiation exposure involved in CT scans, this type of test is not recommended for pregnant women or children. However, with a CT scan, there is some radiation exposure, about the same as an average person receives from environmental radiation in 3 to 5 years. With the use of ultrasound, there is no exposure to radiation. Sonography, or ultrasound, works by using high-frequency sound waves to produce an image of internal structures.
Here is a side-by-side comparison of sonography and CT scan. Although they are similar in that they are both imaging tools, there are some differences between the two tests and what each is capable of detecting. The two tests are used to screen patients for cancer and other abnormal findings.
Sonography and CT scan are two different kinds of imaging tests we use regularly at Innovative Open MRI & Imaging.
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