Morphological concordance between CBCT and MDCT: a paranasal sinus-imaging anatomical study

Area of Science:

• Radiology
• Anatomy
• Medical Imaging

Background:

• Cone-beam computed tomography (CBCT) is an advanced imaging technique initially developed for oral and pre-implant surgery.
• CBCT's high spatial resolution and low radiation dose suggest potential utility in sinonasal surgery and anatomical research.
• Limited clinical and anatomical evidence currently exists regarding CBCT's efficacy in sinonasal applications.

Purpose of the Study:

• To assess the morphological concordance between CBCT and multislice detector computed tomography (MDCT) for sinonasal anatomy.
• To evaluate the reliability and safety of CBCT in visualizing sinonasal structures.
• To compare radiation doses between CBCT and MDCT in anatomical studies.

Main Methods:

• Anatomical study involving 15 fresh cadaver heads.
• Each cadaver head was subjected to both CBCT and MDCT imaging.
• Two independent reviewers assessed 26 key anatomical landmarks to determine morphological concordance and inter-rater agreement.

Main Results:

• CBCT demonstrated excellent overall morphological concordance (>98%) with MDCT.
• Inter-rater agreement for CBCT was high (approximately 97%), comparable to MDCT.
• CBCT achieved this high concordance with a significantly lower radiation dose compared to MDCT.

Conclusions:

• CBCT is a valid, reproducible, and safe imaging modality for identifying sinonasal anatomical structures.
• The findings support CBCT's potential as a valuable tool in sinonasal anatomical research and surgery.
• Further investigation, especially in pathological conditions, is recommended to fully establish CBCT's clinical role.