Gyroscope-Assisted CT-Guided Puncture Improves Accuracy and Hit Rate Compared with Free-Hand Puncture: A Phantom...

Area of Science:

• Medical Imaging
• Interventional Radiology
• Surgical Navigation

Background:

• CT-guided needle punctures are crucial for biopsies and interventions.
• Free hand puncture (FHP) techniques can be challenging, especially for complex trajectories.
• Improving accuracy and efficiency in CT-guided procedures is an ongoing area of research.

Purpose of the Study:

• To compare the efficacy of gyroscope-assisted CT-guided needle puncture (GAP) against free hand puncture (FHP).
• To evaluate the impact of a novel gyroscope guidance system on puncture accuracy and success rates in a phantom model.

Main Methods:

• A low-cost gyroscope system was attached to standard puncture needles.
• 18 radiologists performed punctures on three targets with varying difficulty in a biopsy phantom using both FHP and GAP techniques.
• Hit rate, needle tip distance to target, and procedure time were measured and compared between the two methods.

Main Results:

• GAP achieved a significantly higher hit rate (61.1%) compared to FHP (37%) (p=0.002).
• The mean distance from the needle tip to the lesion center was significantly smaller with GAP (7.49 mm) versus FHP (13.37 mm) (p<0.001).
• Procedure time was not significantly different between GAP and FHP (p=0.362).

Conclusions:

• Gyroscope guidance enhances CT-guided needle puncture accuracy and success rates.
• The GAP technique is a cost-effective and easily implementable solution for improving interventional procedures.
• This method offers improved precision without extending procedure duration, benefiting patient outcomes.