system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
In case of vesicoureteric reflux which will be inv. of choice
assistant
The correct answer is  Ans is 'a' ie MCU "Two techniques are commonly used to detect VUR. The radiocontrast MCU is most commonly used since in addition to showing VUR it provides excellent anatomical details. Isotope radionuclide cystography is more sensitive for detccting VUR , and causes less radiation exposure than the former but provides less anatomical details. Follow-up screening of pts. diagnosed to have reflux (on radiocantrast study) may be done by radionuclide cystography, which is also useful for screening siblings for reflux."