What is the difference between DAT scan and TRODAT scan?

Can both differentiate between parkinsons and drug induced parkinsonism? And what is the elimination time of technetium 99m? or:Can both differentiate

Can both differentiate between parkinsons and drug induced parkinsonism? And what is the elimination time of technetium 99m?

or:Can both differentiate between parkinsons and drug induced parkinsonism? And what is the elimination time of technetium 99m?

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