PET produces images of metabolic activity as opposed to images of the body's physical structures that are derived from these other imaging techniques. Note the following example:
Frequently asked questions about MRI
One of the most basic differences between the two tests is that CAT Scanning uses x-rays and MRI does not. In most situations, MRI is superior to CAT in the demonstration of soft tissue pathology. Your doctor can best advise which test would be most appropriate for you.
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A PET scan produces images of metabolic activity as opposed to images of the body's physical structures that are derived from these other imaging tests. This is important because functional changes often predates structural changes in tissues. PET images may therefore demonstrate changes long before they would be revealed by modalities like CT and MRI.
Manatee Diagnostic Center - Frequently Asked Questions
X-ray is electromagnetic radiation capable of penetrating solids, used to photograph and examine parts of the body, and the X signifies their unknown nature. Ultrasound is sound with a frequency greater than 20,000 Hz, approximately the upper limit of human hearing. It is used to photograph and examine parts of the body. A CAT Scan, or C (Computerized) A (Axial) T (Tomography), uses a scanner x-ray machine to take a cross section x-ray image of the body. It is also called a CT scan.
These costly, sophisticated machines require specialists who will perform the tests and interpret the results. Should your clinician recommend these tests, you will be referred to an outside agency.
Manatee Diagnostic Center - Frequently Asked Questions
CAT Scan is a commonly used term that refers to Computed Axial Tomography. CAT or CT Scanning was developed after Ultrasound and uses x-ray technology. CAT Scanning is fast, patient friendly and has the unique ability to image a combination of soft tissue, bone, and blood vessels. It is a multi use imaging system. For many computed tomography examinations, patients may be asked to take a special contrast agent (orally, rectally or via injection).
NEWisconsin MRI Center: Frequently Asked Questions
Both MRI and CT scans make cross-sectional images (slices) of pretty much any area of the body using a sophisticated computer system. The major difference is that an MRI uses a large magnet and radio waves to produce images while a CT scanner uses x-rays. Therefore, with the MRI studies, there is no exposure to x-rays.
Computed Tomography (CT) uses x-rays to create a cross-sectional image of the body part being examined. Magnetic Resonance Imaging (MRI) uses a high field strength magnet and radio waves to generate a cross-sectional image.
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Numerous studies have shown that even for people who have large body tattoos there is little to no potential for irritation resulting from an MRI. In the rare instance where discomfort resulted, it was localized and very temporary. Most people have more metal in their fillings than they would ever have in tattoo work. Copyright © 1996-2007 Society of Permanent Cosmetic Professionals, All rights reserved and strictly enforced.
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After your test, call the office to schedule a follow-up appointment. Dr. Stanley will explain and discuss your results at this time.
Because an MRI scan uses a magnet and does not use X-ray or particle beams, an MRI scan produces no ionizing radiation.
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The EEG permits to evaluate the manner in which a particular person's brain functions are organized and how the brain use its strength to cope with a disease and how it compensate/adapts to it. PET and MRI are not used for the this purpose, they provide a physical structural assesment on a morphological level, not being suitable for real-time functional activity assessment. EEG/QEEG, or PET and MRI are distinct techniques.
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Yes, you can have an MRI done safely and effectively with no ill side effects or diagnostic problems. However, you should inform the physician performing the MRI procedure that you have permanent cosmetics. Since the micropigment contains iron oxide, this metallic substance can interfere with the electromagnetic fields used in MRI procedures. To avoid a potential problem, technologists use gel filled goggles, or a cream, to cover the area where iron oxide is implanted.
MISS Frequently Asked Questions from UCSD Medical Center
The integration of our newest technolgies that assist in MISS surgery often require that radiologic procedures be tailored to fit each operation and will often require a new scan. Return to top.
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MRI is a sophisticated technology that uses a computer, magnetic field and radio waves - instead of x-rays - to produce images of the soft tissues in the body. MRI has been safely used for decades to provide information to help in the early diagnosis and treatment of disease. MRI of the breasts has emerged as a new technique in the evaluation of breast disease.
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X-rays films only show the bone anatomy and are produced by shooting X-ray beams through your body. Most disc pathology will be shown with an MRI scan followed by a discogram. The MRI scan shows the soft tissue and the MRI is not an X-ray. The MRI scan works because it is a big magnet and you are in it as a magnetic field is created around your body. The magnetic field changes the position of the electrons in the hydrogen atoms of the water that makes up your body.
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PET (positron emission tomography) is a medical imaging technology that uses short-lived radionuclide tracers that are injected in a vein. The most common tracer used is a form of sugar. This is taken up by certain cells; especially cancer cells, but also in normal brain cells and normal heart muscle. This imaging technique is very sensitive for finding certain types of cancers and following their response to treatment.
Frequently Asked Questions About PET/CT
If you are under a physician's care, you should follow your physician's recommendations for the frequency of having a PET scan. Typically, it is suggested that you have a follow-up scan at least every five years. Regardless of how advanced science becomes, however, it should be noted that a PET scan cannot replace the benefits of a clinical exam and evaluation performed by your physician.