1.5 T vs 3.0 T | 合法醫療器材資訊網

Comparing1.5Tvs3.0T(1.5teslavs3.0tesla)MRIsystemsidentifiesseveraldifferences;a3Tsystemhasincreasedsignal-to-noiseratio(SNR)increased ...

Comparing 1.5 T vs 3.0 T  (1.5 tesla[1] vs 3.0 tesla) MRI[2] systems identifies several differences; a 3 T system has

It is important to emphasize that in common with standard scientific unit notation,[3] a space must always be inserted between the quantity and the unit symbol; therefore, 1.5 T and 3 T are correct. Conversely, 1.5T and 3T are incorrect, despite the latter usages often being seen in medical media and some radiology reports.

Theoretically, the signal is proportional to the square of the static field strength (B0), whereas noise increases linearly. This implies that, in a perfect system, the signal-to-noise ratio (SNR) of a 3 T system would be twice as good as at 1.5 T. In reality, due to an increase in susceptibility effects[4] in most tissues, the actual improvement is only in the 30-60% range (instead of 100%). With this increased SNR, the spatial resolutio...