Surgical anatomy of the sphenoid sinus on the CT using multiplanar reconstruction technique

Enatsu, Kaori; Takasaki, Kenji; Kase, Keiichi; Jinnouchi, Shinya; Kumagami, Hidetaka; Nakamura, Takashi; Takahashi, Haruo

doi:10.1016/j.otohns.2007.10.010

Cited by 37 publications

(30 citation statements)

References 9 publications

(20 reference statements)

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“…This trend was particularly apparent when comparing the distances from BOC to SF and to AS. Table 3 shows the mean distances be- BOC and AS was similar to previous studies measuring the distance between the nasal sill and ostium of the sphenoid sinus, although the anatomical points for measurement were different 5,12) . The mean distance between the BOC and AS is more applicable to a transseptal approach than an endonasal approach.…”

Section: Changes Of the Measurements With Degree Of Pneumatization Ansupporting

confidence: 77%

New Landmark for the Endoscopic Endonasal Transsphenoidal Approach of Pituitary Surgery

Cho¹,

Kim²,

Yu³

et al. 2013

Otolaryngol.--head neck surg.

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Objective : To clarify the anatomical correlations of the sphenoid sinus with surrounding structures in the normal Korean population, and to identify surgical landmarks for safe sellar floor dissection in the anterior skull base by endoscopy and microscopy. Methods : We reviewed the 196 brain magnetic resonance imaging findings showing a normal appearance, and measured the distances between anatomical landmarks. Results : The mean distances from the base of the columella to the anterior wall of the sphenoid sinus and the sellar floor were 69.71±4.25 mm and 86.26±4.57 mm, respectively in the over 15 age group, and showed the smallest degree of variation among the measurements. The mean angles between the floor of the nasal cavity and the straight line connecting the base of the columella and the sellar floor were 29.45±3.25° and 24.75±4.00° in the over 15 and under 15 age groups, respectively. The mean values of both distances and angles increased with age until 15 years after which no further increases were evident. There were no significant differences in the measurements between males and females or among subjects with different degrees of pneumatization in the over 15 age group. Conclusion : The distances from the base of the columella to the sellar floor and the anterior wall of the sphenoid sinus, which were consistent among individuals, could be used as a surgical indicator to investigate the sellar floor in endoscopic or microscopic transsphenoidal approaches.

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Section: Changes Of the Measurements With Degree Of Pneumatization Ansupporting

confidence: 77%

New Landmark for the Endoscopic Endonasal Transsphenoidal Approach of Pituitary Surgery

Cho¹,

Kim²,

Yu³

et al. 2013

Otolaryngol.--head neck surg.

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“…With this technique, any arbitrarily reconstructed image desired can be obtained by changing the angle of the plane and by changing the target location. We previously reported new findings that we obtained regarding the spatial anatomy and dimensions of the eustachian tube and sphenoid sinus by using these techniques (7,8). This is why we applied these techniques to clarify the pathogenesis of the vertigo of the present case by analyzing the spatial relationship among the tumor, nerves, and vessels.…”

Section: Discussionmentioning

confidence: 83%

“…Recently, as digital imaging and communications in medicine (DICOM) of computed tomography (CT) and MRI, and viewing and processing software have advanced (6), it has become possible to observe and measure structures seen in the CT and MRI three-dimensionally in a way that meets our needs (7,8).…”

Section: Introductionmentioning

confidence: 99%

A case with posterior fossa epidermoid cyst showing audiovestibular symptoms caused by insufficiency of anterior inferior cerebellar artery – usefulness of free DICOM image viewing and processing software

Takasaki

Kumagami

Baba

et al. 2009

Acta Oto-Laryngologica

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A 58-year-old Japanese man suddenly suffered from vertigo. On physical examination, left-beating horizontal torsional spontaneous nystagmus was observed, of which the direction did not change with gaze. Other neurotological examinations revealed findings within normal limit except the left-side sensorineural hearing loss of approximately 32 dB on an average. Diffusion weighted magnetic resonance imaging revealed no infarction in the brain, but demonstrated an epidermoid cyst in the left cerebello-pontine cistern region. Using free digital imaging and communications in medicine (DICOM) image viewing and processing software, it was found that the epidermoid cyst clearly compressed the left anterior inferior cerebellar artery (AICA). Therefore, we speculated that insufficiency of the left AICA caused his audiovestibular symptoms. This new technique used in the present study was considered useful when the responsible site of vertigo is suspected in the cerebello-pontine angle, where anatomical relationships between the nerves and the vessels are complicated. Takasaki K et al. 3

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“…In addition, they found that both openings were situated halfway between the superior and inferior margin of the sphenoid sinus anterior wall. Similar to Lang, Enatsu et al propounded that both SOs were located almost halfway on the anterior aspect of the sphenoid bone vertically; they also alleged that the spatial orientation of both relative to the carotid artery and the optic nerve showed no remarkable variation in their study (9,13). They resolved, however, that vertical and horizontal data of each SO varied significantly (9).…”

Section: Locationmentioning

confidence: 95%

Three-dimensional anatomical landmarks of the sphenoid ostia for a safer transsphenoidal approach

Gövsa

Özer²

2014

Turkish Neurosurgery

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AIm:The sphenoid ostium (SO) is an anatomical reference in transsphenoidal approach surgery. mATERIAl and mEThods:The morphological features of the SO were studied in 352 skull base by 3D-Doctor Demo version. REsulTs:The mean diameters of the SO were measured as 5.8 ± 1.3 mm (right) and 5.9 ± 1.2 mm (left), respectively. The mean distance from the SO to the midline was measured as 2.3 ± 1.1 mm (right) and 1.8 ± 0.9 mm (left), respectively. 8 bones had SO on one side, whilst 4 bones had no SO. In 5 bones there was a double SO structure on one side. 74.4% of ovoid SO specimens have the largest perimeter, therefore, allow the highest degree of surgical success. It was noted that they were not symmetrical (21.8%). Openings were found to be at different distances from the midline, some at different distances from the floor; in addition, differently shaped openings, as well as those with an opening absent on one side or with double openings, were observed.CoNClusIoN: Separate coordinates and safe routes must be calculated for right and left openings. The SO analysis could eliminate some of standardization measurements of an exposed surgical area. BulGulAR: Ortalama SO çapı 5,8 ± 1,3 mm (sağ) ve 5,9 ± 1,2 mm (sol) olarak ölçüldü. SO'dan orta hatta kadar ortalama mesafe 2,3 ± 1,1 mm (sağ) ve 1,8 ± 0,9 mm (sol) olarak ölçüldü. 8 kemikte SO tek taraflı iken 4 kemikte SO yoktu. 5 kemikte bir tarafta çift SO yapısı bulunmaktaydı. Ovoid SO numunelerinin %74,4'ü en büyük perimetreye ve böylece en yüksek cerrahi başarı derecesine sahipti. Bunların simetrik olmadığı (%21,8) görüldü. Açıklıklar orta hattan farklı mesafelerde ve bazıları zeminden farklı mesafelerdeydi; ayrıca farklı büyüklükte şekiller ile birlikte bir tarafta açıklık olmayanlar veya çift açıklığı olanlar gözlendi.TARTIşmA: Sağ ve sol açıklıklar için farklı koordinatlar ve güvenli yollar hesaplanmalıdır. SO analizi, açığa çıkarılmış bir cerrahi alanın standardizasyon ölçümlerinin bazılarını ortadan kaldırabilir.

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Surgical anatomy of the sphenoid sinus on the CT using multiplanar reconstruction technique

Cited by 37 publications

References 9 publications

New Landmark for the Endoscopic Endonasal Transsphenoidal Approach of Pituitary Surgery

New Landmark for the Endoscopic Endonasal Transsphenoidal Approach of Pituitary Surgery

A case with posterior fossa epidermoid cyst showing audiovestibular symptoms caused by insufficiency of anterior inferior cerebellar artery – usefulness of free DICOM image viewing and processing software

Three-dimensional anatomical landmarks of the sphenoid ostia for a safer transsphenoidal approach

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