With this technologically advanced machine a typical lumbar MRI takes only 7 minutes of scan time and the pictures are clearer than with any other machine in the market. At Dunedin Hospital we have a 3T (also known as 3 Tesla) machine which is the highest field strength, strongest most technologically advanced MRI machine approved for human use by the Food and Drug Administration. A range of MR field strengths is available, including 3T and 1.5T, as well as 0.7T Open scanners, 0.6T Open Upright and 0.2-0.35T Open scanners. With higher field strengths, your scan pictures are clearer and show smaller details of your body. ![]() Field strength is the power of the scanner’s magnet. Excellent information from detailed imagesĮvery MRI scanner has what is called “field strength” that is measured in Tesla (also noted simply as “T”).In addition to safety, MRIs offer a number of other significant patient benefits including: It is one of the safest imaging techniques available because it uses magnetic signals to see through the body instead of exposing the patient to radiation. Magnetic resonance imaging (MRI) uses powerful magnets, radio waves and a computer to construct pictures of the body depicting details that can’t be seen using other imaging techniques.
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