Newly developed application system for CT-guided puncture based on multidetector row CT without CT fluoroscopy

Area of Science:

• Medical Imaging
• Interventional Radiology

Background:

• CT-guided interventions are crucial for diagnosis and treatment.
• Traditional systems may have limitations in speed and orientation.
• Advancements in multidetector CT (MDCT) offer potential improvements.

Purpose of the Study:

• To describe the preliminary clinical experience with the GuideShot multidetector CT (MDCT) system.
• To evaluate its efficacy in CT-guided interventional procedures.

Main Methods:

• The GuideShot system allowed simultaneous acquisition and rapid display of three axial CT images.
• Procedures were performed using a single-shot mode, without continuous CT fluoroscopic (CTF) mode.
• Interventional radiologists controlled exposure and table movement via foot pedals.
• The system was used for 48 biopsies, 7 drainage tube placements, and 69 hook wire placements.

Main Results:

• Technical success was achieved in all 124 procedures.
• 99% of interventions were completed within a single breath-hold.
• The table controller facilitated precise needle or target positioning with minimal table movement.

Conclusions:

• The GuideShot MDCT system enhances Z-axis orientation for interventional radiologists.
• It enables rapid CT-guided procedures, even without a CTF mode.
• This system presents a viable alternative for CT-guided interventions as MDCT replaces single-slice CT.