著者

池田 敦子 池田 元久 小松 崎篤

出版者

耳鼻咽喉科臨床学会

雑誌

耳鼻咽喉科臨床 (ISSN:00326313)

巻号頁・発行日

vol.90, no.11, pp.1235-1239, 1997-11-01 (Released:2011-11-04)

参考文献数

16

被引用文献数

1 1

---

In an attempt to study the distribution pattern and correlation between maxillary, frontal and sphenoid sinus volume, sinus volumes were measured by coronal CT scans of the paranasal sinus. Two hundred and four maxillary sinuses of 102 patients, the frontal sinuses of 62 patients and the sphenoid sinuses of 68 patients with no inflammatory changes detectable on CT scans of the each paranasal sinus and nasal cavity were analyzed. The volumes of the maxillary sinus showed a normal distribution, and its mean volume and standard deviation were 20.5±9.2cm3. The logarithms of both frontal and sphenoid sinus volumes exhibited a normal distribution. The mean volume of the frontal sinus and the sphenoid sinus, which were calculated using logarithms of the sinus volumes statistically, were 8.3cm3 and 9.6cm3 respectively. The correlation coefficient was 0.134 between the maxillary and frontal sinus, 0.445 between the maxillary and sphenoid sinus and 0.315 between the frontal and sphenoid sinus. It is suggested that differences in the volume distribution pattern between the maxillary sinus and frontal or sphenoid sinus might be caused by differences in the growing process of each sinus.

著者

池田 元久 渡辺 勧

出版者

日本耳科学会

雑誌

Otology Japan (ISSN:09172025)

巻号頁・発行日

vol.2, no.5, pp.686-691, 1992-12-28 (Released:2011-06-17)

参考文献数

16

---

Six male patients complained of vertigo or disequilibrium accompanied with occupational hearing loss.Two of them worked in very noisy places for three years in the past and theothers have been working for 15 years or more. Their audiogram showed bilateral C5dip or high tone hearing loss. All of them were suffering from unilateral or bilateral tinnitus. Three of them (group A) have often felt static and gait imbalances while the others (group B) have experienced repeated rotatory vertiginous attacks. All cases of group Bshowed positional or positioning vertigo, rotatory nystagmus and decreases of caloric response. Onthe contrary, all cases of group A did not show any nystagmus or abnormal caloricresponse. The authors speculated that the patients of group A have received excessive stress by noisy circumstance in long terms, and this stress could cause insufficiency of cardiovascular system, vertebrobasilar arteries and autonomic nerve system. In the patients of group B, their inner ears were damaged not only in the cochlear but also in the vestibularsystems because of exposure to high intensity noise for a long period of time.