isaac-for-healthcare/i4h-tutorials ? reverse-engineered prompt

Help me turn this into a clean tutorials repo for Isaac for Healthcare.

I want the project to give people easy, step by step walkthroughs for a few healthcare simulation examples, including catheter and vasculature work, synthetic data generation, and a vasculature digital twin. Please make the repo feel polished and consistent, with each tutorial easy to follow on its own, and each one starting from its own README with clear setup, prerequisites, and run instructions.

If anything is missing, fill in sensible placeholders and keep the instructions practical for someone who is trying this for the first time. Make sure the wording is simple, the structure is tidy, and the tutorials all feel like part of the same family. If you need current Isaac4H or Python related details, look up the latest docs online.