These are two very popular medical tools that used for creating images that doctors use for various diagnostic purposes. While they are very widely used, they are not the same; each has its own way of doing its job. A CT Scan will usually cost more than an ultrasound procedure, and the time it takes to complete a CT Scan will be shorter, about 5 minutes. A routine ultrasound can be completed in about 15 minutes. With a CT Scan there is some slight radiation exposure. The amount of exposure is about the same as what you might get from 3 years of background radiation.
For this reason, children and women who are pregnant are not routinely given CT Scans. There is no radiation exposure with the use of ultrasounds. An MRI machine is similar to a CT scan in that it involves a large box-like device with a hole in the center. MRIs tend to be very loud and may require special ear protection. Computed tomography CT or CAT scan combines x-rays and a computer to create degree pictures of the spine and of internal organs. During a CT, the technician takes a series of x-ray images from different angles.
Then the computer processes and assembles the series of images to create cross-sectional images, or slices, of the bones, blood vessels, and soft tissues. CTs create images that are more detailed than traditional x-rays. A CT is a large box-like machine with a hole or tunnel in the center. You lie on a table, which passes through the hole during the test.
Dense structures within the body, such as bones, easily show up in the image. However, soft tissue may be difficult to see in the scan. To help medical professionals identify issues with the soft tissues a special dye, known as contrast, is sometimes administered through an IV.
For more information on diagnostic imaging, and the differences between the various tests, consult with your health care professional. The more you know about diagnostic imaging, the more control you have over your own health. Do you want to know more? Explore our locations, treatments, or our new patient offering below or contact one of the BackFit staff members to have your questions answered. Originally posted on April 27, If you are like most people, you have undergone some type of medical imaging in your life already, such as an x-ray, ultrasound, MRI, or CT.
But what exactly are the differences between these medical imaging techniques? X-rays X-rays use electromagnetic radiation to create images.
Ultrasound Diagnostic medical ultrasounds us a non-invasive diagnostic technique used to image the inside of the body. MRI Magnetic resonance imaging MRI uses a strong magnetic field and radio waves to create images of the body that cannot be seen as well with x-rays, ultrasounds, or CT scans.
CT Computed tomography CT or CAT scan combines x-rays and a computer to create degree pictures of the spine and of internal organs. It produces tomographic images or cross-sectional images by putting together multiple X-ray images created by low-powered rays passing several times over the same body area, from different angles.
A computer merges all the images into a single high-definition image that enhances clarity and definition that allows the doctor to view the area slice by slice. During the CT scan, the patient is passed through the scanning system that uses X-rays and allows doctors to see inside your body. During the process, a narrow X-ray beam and an X-ray detector circles around one part of your body so that the X-rays that are passed through the region of interest can produce different image slices in axial or helical mode.
The multiple images are then computed to create a view of the organ. The high contrast CT image can be immediately viewed on a television monitor or can be recorded for storage and analysis later. It can be used to visualize nearly all parts of the body and is much better at screening for certain types of cancer tumors and used to diagnose disease or injury as well as to plan medical, surgical or radiation treatment depending upon the prognosis.
Moreover, doctors use CT scans to find out if certain treatments are working or not. For example, scans of a tumor after some time helps in identifying the. It is also called sonography or diagnostic medical sonography that uses high-frequency sound waves to produce images of fetuses development during pregnancy and can also diagnose kidney and gall stones to make available valuable information for diagnosing and treating a variety of diseases and conditions.
Ultrasound is a sound wave that can travel through soft tissue and fluids, for example, if it hits a heart valve, it will echo or bounces back. These sound waves, when reflected back from the body, will be first received by a transducer and will pass through the ultrasonic scanner, where they are processed and transformed into a digital image.
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