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what mainly controls T1 imaging?
- has to be short TR to enhance t1 contrast
what mainly controls T2 imaging?
what controls proton density?
- both TR and TE
- has to be long TR and short TE
what controls T1 in gradient echo imaging?
- TR and flip angle
- has to be long TR and the flip angle is high
what controls T2 contrast in gradient echo imaging?
- TE and flip angle
- Long TE and low
what controls proton density in gradient echo imaging?
- TR, TE, and flip angle
- long TR, low flip angle and short TE