Comparative Study of the Sectional Anatomy with CT Imaging of the Parapharyngeal Space

Objective To provide sectional anatomic data for radiology and clinical diagnosis of the parapharyngeal space. Methods 20 cadavers underwent CT examination and then transverse specimens were made in head and neck . At pharyngeal recess level et al, parapharyngeal space and parapharyngeal structure were observed, space was measured in the area . Results The shape of the parapharyngeal space was similar triangle at pharyngeal recess level, It was 447.6±2.18mm2(left) and 446.4±2.10mm2(right) on transverse section, 42.6±3.12mm2(left) and 43.1±2.96mm2(right) on CT in area of the parapharyngeal space. Parapharyngeal space and parapharyngeal structure were symmetrical of both sides, Parapharyngeal space was divided into two parts by the line from styloid process to pharyngeal recess: preparapharyngeal and retroparapharyngeal space, It was better to show relationship of structures in the retroparapharyngeal space with CT. Conclusion Fatty tissue, internal carotid artery, internal jugular vein, styloid process and medial pterygoid muscle were important anatomical marks for CT diagnosis. Transverse sectional anatomy of the parapharyngeal space has an important significance for imaging diagnosis of diseases.