The posterior groove as a landmark for location of the palatovaginal canal in axial computed tomography
| Autor: | Li Shi, Yongtian Lu, Yi Lei, Qingguo Meng |
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| Rok vydání: | 2016 |
| Předmět: |
Adult
Male 0301 basic medicine Adolescent Fossa Pterygopalatine Fossa Computed tomography Pathology and Forensic Medicine Young Adult 03 medical and health sciences 0302 clinical medicine otorhinolaryngologic diseases medicine Humans Radiology Nuclear Medicine and imaging Aged Pterygopalatine fossa Landmark medicine.diagnostic_test biology business.industry Endoscopy Anatomy Middle Aged biology.organism_classification Skull medicine.anatomical_structure Palatovaginal canal Female Surgery 030101 anatomy & morphology Hard palate Anatomic Landmarks Tomography X-Ray Computed business Groove (joinery) 030217 neurology & neurosurgery |
| Zdroj: | Surgical and Radiologic Anatomy. 38:825-833 |
| ISSN: | 1279-8517 0930-1038 |
| DOI: | 10.1007/s00276-016-1628-7 |
| Popis: | To investigate use of posterior groove of palatovaginal (PV) canal as an anatomic landmark in determining the location of PV canal in axial computed tomography (CT) images of pterygopalatine fossa (PPF). A total of 20 skull specimens were examined in this analysis. Each skull was scanned by CT with and without a probe inserted through PV canal to measure the anatomic structures. CT images of 70 patients were used for comparing the rate of correct location of PV canal between the conventional method (using the vidian canal as a landmark) and the method of using the posterior groove as a landmark. Two skulls were dissected using endoscopy to further reveal the advantage of the posterior groove as a landmark. In all 20 skull specimens, the groove showed the morphology of a narrow groove and elliptical fossa in 24 and 16 sides, respectively. In CT images, the angle from PV canal and the posterior groove to the hard palate was 53.14° ± 5.48° and 20.93° ± 6.28°, respectively, which was significantly different (P ≤ 0.05). The rate of correct location of PV canal was statistically significantly higher with the method of posterior groove as a landmark than the conventional method (70.7 vs 49.3 %, P |
| Databáze: | OpenAIRE |
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