Sex differences in the zygomatic angle in japanese patients analyzed by MRI with reference to moiré fringe patterns

Autor:	Masatugu Itoh, Toshiko Ikeda, Motonobu Nakamura
Rok vydání:	1999
Předmět:	Adult Male Orthodontics Sex Characteristics Zygoma medicine.medical_specialty business.industry Moiré pattern Middle Aged Moire Photographs Magnetic Resonance Imaging Surgery medicine.anatomical_structure Japan medicine Humans Female Zygomatic arch business Orbit Aged
Zdroj:	Aesthetic Plastic Surgery. 23:349-353
ISSN:	1432-5241 0364-216X
DOI:	10.1007/s002669900297
Popis:	To quantitate the degree of zygomatic protrusion, a new item, "zygomatic angle," was measured on MRI cross sections in the orbitomeatal plane. The sex differences in the zygomatic angle were highly significant on both sides, being larger in males than in females. The shape of the zygomatic protrusion was classified into angulate, intermediate, and massive types according to the value of the zygomatic angle. The incidence of the angulated type was significantly more frequent in females, and that of the massive type was significantly more frequent in males. Another analysis was made of horizontal cross sections in the orbitomeatal plane in moiré photographs. In these cross sections, it was possible to judge the above-mentioned three types of protrusions. The number of Moiré fringes in the infraorbital region was measured in relation to the amount of zygomatic protrusion. The results on Moiré photographs coincided with those obtained by MRI analysis.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f37aa6b8a31cf031cfbfee7118f287c0 https://doi.org/10.1007/s002669900297 Zobrazit plný text záznamu Full text from SpringerLink