Computed tomographic angiography with three-dimensional reconstruction for transoral laser microsurgery

Area of Science:

• Head and Neck Surgery
• Medical Imaging
• Oncology

Background:

• Pharyngeal tumors pose surgical challenges due to proximity to major arteries.
• Accurate pre-operative anatomical mapping is crucial for safe transoral laser microsurgery.
• Existing imaging techniques may not fully delineate complex arterial relationships.

Purpose of the Study:

• To evaluate the utility of a novel 3D CT angiography technique for identifying arteries relative to pharyngeal tumors.
• To enhance pre-surgical planning for transoral laser microsurgery of large pharyngeal tumors.

Main Methods:

• Developed a technique combining 3D CT angiography and enhanced soft-tissue neck CT.
• Created 3D images of tumors and adjacent arteries for spatial orientation.
• Included patients with large pharyngeal tumors undergoing transoral laser microsurgery.

Main Results:

• 3D CT angiography significantly improved visualization of arterial anatomy compared to standard CT.
• Identified tumor involvement or displacement of lingual and facial arteries in several patients.
• Altered surgical approach in one case due to 3D CT angiography revealing an encased lingual artery.

Conclusions:

• 3D CT angiography is valuable for pre-operative anatomical assessment in pharyngeal tumor surgery.
• This technique enhances the planning of transoral laser microsurgery by clarifying arterial relationships.
• Improved visualization leads to safer and potentially more effective surgical interventions.