Application-level Preclinical Imaging (In-VIVO) segmentation drives demand heterogeneity across the market taxonomy. Oncology dominates, accounting for roughly 38 % of 2023 global instrument revenues because serial imaging of tumor-bearing rodents shortens drug-efficacy timelines and reduces animal counts, translating into direct R&D savings. Neurology follows with a 22 % share; the rise of transgenic Alzheimer’s and Parkinson’s models elevates PET and MRI throughput, while stroke studies fuel high-frequency optical imaging demand. Cardiology (15 %) is propelled by miniaturized ultrasound and MR systems that quantify ejection fraction in mice, indispensable for metabolic-syndrome pipelines. Inflammation & infection (12 %) benefits from dual-modal PET-CT that tracks leukocyte trafficking in real time, a capability valued for autoimmune and sepsis programs. Other applications—including musculoskeletal, diabetes, and toxicology studies—collectively contribute 13 %, yet grow fastest in Asia-Pacific due to outsourcing of safety-assessment work. Each vertical commands distinct imaging frequency, tracer portfolio, and regulatory documentation, shaping vendor pricing power and installed-base loyalty.