Yes. You can reuse a cartridge if you sanitize it properly after each session (soak the head in 70% isopropyl alcohol for 10 minutes, then air-dry needles-up).
For optimal performance, many users prefer a fresh needle head each session-sharper needles can feel smoother and deliver more consistent micro-channels. Reusing a sanitized cartridge can still work well; just know that needles gradually dull with use, and you may notice a different feel over time.