Nuclear Imaging Systems segmentation by application distinguishes the primary clinical domains that drive demand for gamma cameras, PET/CT, SPECT/CT, and hybrid devices. Oncology remains the largest share, accounting for roughly 45 % of total revenue, as radiopharmaceutical‑based tumor detection, staging, and therapy monitoring require high‑resolution PET and SPECT modalities. Cardiology follows with an estimated 30 % share, where myocardial perfusion imaging and viability assessments rely on gamma‑camera and SPECT platforms. Neurology contributes about 15 %, supporting dementia, Parkinson’s disease, and epilepsy diagnostics through specialized tracers and PET‑CT systems. The remaining 10 % comprises Orthopedics and Research applications, which use low‑dose SPECT for bone turnover studies and pre‑clinical imaging, respectively. Collectively, these application segments shape the overall market size by allocating capital expenditure, influencing product development cycles, and determining regulatory pathways. Understanding this application‑level taxonomy is essential for forecasting growth patterns within the Nuclear Imaging Systems market.