Direct answer
The better commercial model depends on capital policy, project risk, support coverage, fleet scale, customization and expected operating life.
Direct purchase
The hospital owns the assets and may achieve lower long-term cost, but carries more upfront cost and lifecycle responsibility.
RaaS
A service agreement can bundle hardware, software, support and replacement terms, but contract scope and long-term fees require careful review.
Compare consistently
Model the same deployment, integrations, service levels, uptime responsibilities and contract term under both options.