Quick Answer Post-void residual urine is the urine left in the bladder after urination. You can measure it with ultrasonography, bladder scanning, or catheterisation. Higher readings may indicate inadequate emptying, but there is no universal limit; physicians must consider symptoms and
Quick Answer Ground-glass opacity is not a diagnosis; rather, it is an imaging description. Infection, inflammation, fluid, haemorrhage, interstitial lung disease, and chronic nodules can all cause it. Pattern, size, distribution, symptoms, prior scans, and clinical history all influence its relevance.
Quick Answer A double marker test, which is often performed between weeks 9 and 14, assesses free beta-hCG and PAPP-A to determine chromosomal risk when paired with an NT scan. It is a screening test, not a diagnostic test. This guide
Quick Overview CT contrast dye improves image quality during diagnostic imaging, but recognising potential adverse effects helps patients prepare with confidence. Most side effects are moderate and temporary, and serious adverse events remain relatively rare in modern radiologic therapy. Knowing what
Quick Answer An AFP test detects alpha-fetoprotein, a protein utilised in two distinct contexts: screening for certain disorders during pregnancy and monitoring specific tumors, particularly liver cancer, in non-pregnant adults. A skilled doctor should always interpret the results in light of
Quick Answer 4D ultrasound uses standard ultrasound sound waves to create real-time, three-dimensional images. It may provide beneficial images of specific foetal characteristics when clinically indicated. Timing depends on the examination goal and the foetal position. It is not a replacement
