You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is An 8-month-old boy is referred for evaluation following a urinary tract infection. Ultrasound examination of the abdomen is normal. The most appropriate investigation to evaluate his lower urinary tract is and explain in detail?
Diagnostic imaging studies following UTI * Recommended radiological evaluation includes a combination of ultrasound abdomen, micturating urethrogram (MCU, most appropriate) and radionuclide renal scan. * Detailed radiological investigations are performed on all children: 1. Below 3-year-old with first UTI 2. Those with symptoms of pyelonephritis 3. Recurrent UTI 4. Abnormal voiding 5. Family history of UTI or hypeension. Procedure The estimated age-adjusted bladder capacity can be calculated using : linear equations: <1 year weight x 7 = capacity (mL) 2.5 x age + 38 = capacity (mL) <2 years: (age (years) + 2) x 30 = capacity (mL) 6 >2 years: ((age /2)+6) x 30 = capacity (mL) non-linear equations: (4.5 x age 0.40) x 30 = capacity Reference: GHAI Essential pediatrics, 8th edition