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In radiology and urology, a cystography (also known as cystogram) is a procedure used to visualise the urinary bladder. Using a urinary catheter, radiocontrast is instilled in the bladder, and X-ray imaging is performed. Cystography can be used to evaluate bladder cancer, vesicoureteral reflux, bladder polyps, and hydronephrosis.
Cystourethrography is a radiographic, fluoroscopic medical procedure that is used to visualize and evaluate the bladder and the urethra. [1] Voiding and positive pressure cystourethrograms help to assess lower urinary tract trauma, reflux, suspected fistulas, and to diagnose urinary retention.
Under fluoroscopy (real time x-rays) the radiologist watches the contrast enter the bladder and looks at the anatomy of the patient. If the contrast moves into the ureters and back into the kidneys , the radiologist makes the diagnosis of vesicoureteral reflux , and gives the degree of severity a score.
If there is no contraindication to full urinary catheterisation such as false passage or stricture, the urinary catheter should be inserted until the urinary bladder to perform voiding cystourethrography to visualise the prostatic urethra and membranous urethra. Filling up the bladder with contrast material without full catheterisation (the end ...
The x-axis is the volume of liquid and the y-axis is the intraluminal pressure of the bladder. In normal patients, the plot is a series of spikes whose local minimums form a non-linear curve resembling an exponential growth curve. The spikes correspond to the bladder contractions associated with the micturition reflex. The curve formed by the ...
Unlike a kidneys, ureters, and bladder x-ray (KUB), which is a plain (that is, noncontrast) radiograph, an IVP uses contrast to highlight the urinary tract. In IVP, the contrast agent is given through a vein ( intravenously ), allowed to be cleared by the kidneys and excreted through the urinary tract as part of the urine . [ 5 ]
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In the top-right image, the cystoscope has been bent within the bladder to look back on itself. The bottom two images show an inflamed urethra. If a patient has a stone lodged higher in the urinary tract, the physician may use a much finer calibre scope called a ureteroscope through the bladder and up into the ureter. (The ureter is the tube ...