EXCRETORY SYSTEM
URETER
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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At what stage do cortical and medullary enhancement balance?
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Arterial phase
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nephrographic phase
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Excretory Phase
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None of the above
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Explanation:
Detailed explanation-1: -The nephrogenic phase, also known as the nephrographic phase or the renal parenchymal phase, is a postcontrast injection time range in which there is an optimal enhancement of the renal parenchyma including the medulla.
Detailed explanation-2: -A renal CT is performed in 3–4 phases: the native, arterial (20-to 40-s delay), the venous (100-to 150-s delay) and the excretory phase (180-to 300-s delay).
Detailed explanation-3: -Non-enhanced CT (NECT) Early arterial phase-15-20 sec p.i. or immediately after bolustracking. Late arterial phase-35-40 sec p.i. or 15-20 sec after bolustracking. Hepatic or late portal phase-70-80 sec p.i. or 50-60 sec after bolustracking. More items •01-Jun-2014
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