Final answer:
Computed tomography (CT or CAT scan) is the imaging modality of choice in modern urology work-up of hematuria.
Step-by-step explanation:
The imaging modality of choice in modern urology work-up of hematuria is Computed tomography (CT or CAT scan). CT scan is considered the gold-standard diagnostic test for the detection of kidney stones and is commonly used to diagnose various urological conditions, including hematuria. CT scan provides detailed cross-sectional images of the urinary tract, allowing the urologist to identify any abnormalities or sources of bleeding.