What's the difference between a 1.5T and a 3T MRI scanner ... | 合法醫療器材資訊網

2019年3月20日—Weareoftenaskedwhatthedifferenceisbetweena1.5Tscanneranda3T.Theansweristhata3Tscanneristwicethestrengthofa1.5T ...

‘Tesla’ is the unit that measures magnetic strength; one Tesla is equal to 10,000 gauss, which is approximately 30,000 times more than average gravity on the surface of the Earth. We are often asked what the difference is between a 1.5T scanner and a 3T. The answer is that a 3T scanner is twice the strength of a 1.5T scanner.

The strength of the MRI magnet is directly proportional to the amount of signal that is received from the human body during an MRI scan. Because the signal from the body is then used to create the images, the higher the magnetic strength, the more detailed the images, right?

Well, not necessarily. When comparing 1.5T to 3T MRI scanners, there are two important factors to consider: safety and image artefacts.

Some ...