A medical imaging technique using X-rays to photograph and examine the bladder and urethra, often with contrast dye.
From Greek 'kystis' (bladder) + 'urethra' + '-graphy' (to write/record). Medical imaging terminology from the X-ray era of medicine.
This imaging technique literally lets doctors see 'movies' of your urethra and bladder working—contrast dye makes the organs glow on X-rays, revealing structural problems, leaks, and blockages that wouldn't show up otherwise.
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