In MRI, TE stands for the _____.

In MRI, TE stands for the _____.

• A. Time to echo
• B. Time to image
• C. Time to sampling
• D. Time to repetition

Answer: (A)

In MRI, TE is the Echo Time—the time from the radiofrequency excitation pulse to the peak of the detected echo. It’s measured in milliseconds and largely determines how much T2 decay affects the signal by the time the echo is read. Short TE minimizes T2 weighting, while longer TE increases T2 contrast, helping to differentiate tissues with different T2 properties. This parameter is distinct from TR, the Time to Repetition, which is the interval between successive excitations. The other options—Time to image and Time to sampling—aren’t standard terms used to describe this MRI timing parameter.

In MRI, TE is the Echo Time—the time from the radiofrequency excitation pulse to the peak of the detected echo. It’s measured in milliseconds and largely determines how much T2 decay affects the signal by the time the echo is read. Short TE minimizes T2 weighting, while longer TE increases T2 contrast, helping to differentiate tissues with different T2 properties. This parameter is distinct from TR, the Time to Repetition, which is the interval between successive excitations. The other options—Time to image and Time to sampling—aren’t standard terms used to describe this MRI timing parameter.