Robotics in Radiology

Robotics can improve precision, repeatability and access to difficult anatomical targets. In radiology, robots can assist image-guided procedures, positioning, biopsy and radiation treatment.

Major Applications

1. Robotic-Assisted Biopsy

A robot can position a needle along a planned trajectory based on CT, MRI or ultrasound images. The operator remains responsible for planning and clinical supervision.

Medical Image → Target Planning → Robot Positioning → Needle Guidance
       ↑                                               ↓
       └────────────── Image Verification ────────────┘

2. Robotic Radiation Therapy

Systems such as CyberKnife use robotic positioning of a compact linear accelerator to deliver radiation from multiple angles while image guidance helps localize the target.

3. Patient/Imaging-System Positioning

Robotic mechanisms can assist positioning of patients or imaging components, improving repeatability and workflow.

4. Image-Guided Intervention

Robotic systems can integrate imaging data with navigation and motion control for minimally invasive procedures.

5. Tele-Radiology Support

Robotics can assist remote or semi-automated positioning and procedure support, although communication, safety and regulatory requirements must be carefully addressed.

Advantages

• High positional precision.
• Repeatable movements.
• Ability to operate in constrained trajectories.
• Reduced physical workload for clinicians.
• Integration with image guidance.
• Potentially improved targeting consistency.

Limitations and Safety

• High system cost.
• Complex calibration.
• Need for reliable image-to-robot registration.
• Mechanical/electrical failure risks.
• Cybersecurity and network risks.
• Requires trained clinical operators and appropriate safety interlocks.

Conclusion

Robotics in radiology combines medical imaging, navigation, motion control and clinical expertise to improve precision in procedures such as biopsies and radiation treatment. The robot assists the clinician; it does not replace clinical responsibility.