Normal split bolus technique CT study
Persistent microscopic haematuria.
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Both kidneys concentrate and excrete normally.
Normal appearances of the collecting systems, ureters and bladder.
Normal appearances of the solid organs of the upper abdomen.
The split bolus technique is a CT imaging investigation used in patients with hematuria aiming to put together, in a single image acquisition, both the nephrographic and renal excretory phases and thus reducing the radiation dose of the study. It is a CT protocol adopted for some institutions for assessing a patient with hematuria.
This is a normal example of the whole renal tract illustrated. Often the ureters will not both be filled in their entirety with contrast.