MRI Urography Techniques

Which imaging technique has largely replaced intravenous excretion urography for evaluating the urinary tract?

What is the adult dose range of low osmolar contrast material used in urography?

Which type of patients should be prepared with oral or intravenous hydration before undergoing urography?

What is the main contraindication for using intravenous water-soluble contrast media in urography?

Why is dehydration unnecessary and does not improve image quality before undergoing urography?

What is the reason behind the kidneys appearing mildly hydronephrotic premicturition?

How can renal artery stenosis be diagnosed using Doppler techniques?

What technique is employed to evaluate renal transplants for vascular pathology?

In computed tomography urinary tract imaging, when is an arterial phase scan of the liver particularly appropriate?

What is the key factor indicating a severe renal artery stenosis when evaluating intrarenal arteries using Doppler ultrasound?

What is the purpose of the 5-min film during the imaging procedure described in the text?

When is compression contraindicated during the imaging procedure described in the text?

In ultrasound of the urinary tract, what is a common indication for performing renal vascular studies?

During the imaging procedure described, when is the immediate film exposing the nephrogram taken?

What does the release film aim to show during the imaging procedure described in the text?

What is the significance of performing a postcontrast scan at 100 s (nephrographic phase) in CT imaging of the kidneys?

What CT technique is typically used to assess possible stone disease in patients with renal colic?

What percentage of washout on delayed CT images is highly specific for a benign adrenal lesion?

In a CTU, what is the purpose of acquiring thin-section scans during the nephrographic/parenchymal enhancement phase?

What additional technique may be used in some protocols during a CTU to achieve collecting system distension?

What is the purpose of administering contrast 10-15 minutes before scanning and then an additional 50 mL at the time of the scan in computed tomography (CT) angiography?

What is NOT a common indication for magnetic resonance imaging (MRI) of the urinary tract according to the text?

In MRI imaging of the prostate, which functional studies are increasingly being used as per the text?

What is recommended to assess retroperitoneal lymphadenopathy in patients with bladder and prostate cancer?

What is the main difference between static fluid-sensitive urography and excretory MR urography?

What contrast medium is typically used for micturating cystourethrography?

How does chemical shift imaging help in the characterization of adrenal masses?

Why is it important to monitor early filling during micturating cystourethrography?

Which imaging technique is commonly used for excretory MR urography to image the collecting systems?

In which patient position is it recommended to visualize the lower ureter during micturating cystourethrography?

What is the purpose of lateral views in urodynamic studies?

When should oblique views be used during the procedure?

What is an appropriate aftercare consideration following the procedure?

What complication can arise from catheter trauma?

What is the main contraindication for ascending urethrography in males?

How should the contrast medium be prepared for ascending urethrography?

What is the key step in the technique of ascending urethrography?