Paediatric ImagingWhitaker's test
(Robert Whitaker, 20th century, English urologist), percutaneous insertion of a canula into the renal pelvis with perfusion of contrast at a rate of 10 ml/minute and simultaneous recording of pressure in the renal pelvis and bladder to identify the presence of obstruction in doubtful cases. In children, the examination is performed under general anaesthetic and instead of a canula two fine needles are inserted (Fig.1). The infusion of contrast allows a simultaneous antegrade pyelography. See obstruction urinary tract
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Image of an antegrade pyelogram performed at the same time as the Whitaker test. Note the two needles in the renal pelvis. This child has got an obstruction in the distal one third of the ureter with a massive proximal hydronephrosis and hydroureter. The test was performed to identify the anatomy.
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Whitaker's test, Fig.1 | |