Practice question

Combining structure and function improves diagnostic localization. Positron emission tomography reveals highly sensitive functional data such as glucose metabolism, amyloid deposition or receptor density but suffers from low spatial resolution. Computed tomography provides detailed X-ray based anatomy of skull, ventricles and calcifications. Hybrid PET-CT scanners acquire both datasets sequentially with software fusion, superimposing metabolic hotspots on anatomical maps, crucial for tumor staging, seizure focus localization and biopsy guidance. Standalone EEG provides temporal electrical info, CT alone lacks function, MRI alone lacks molecular metabolic insight.