Transrectal ultrasonography was compared with voiding cystourethrography (VCU) in 27 patients after spinal cord injury. Both techniques gave clear images of the bladder and posterior urethra. Ureteric reflux, intraprostatic reflux and anterior urethral diverticula were seen only on VCU. Ultrasonography showed soft tissue detail and muscle contraction not seen on VCU. Other advantages of ultrasonography included the lack of radiation hazard, allowing prolonged observation; no contrast medium was required and this eliminated the need for catheterisation.
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Fellows et al. (1987) studied this question.
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