Results 241 to 250 of about 530,420 (288)

Orbital Apex Syndrome: A Clinico-Anatomical Diagnosis.

Journal of Pediatric Neurosciences, 2020
An 8-month-old girl presented with fever, restricted left eye movements and increasing proptosis for 8 days. On examination she had left orbital cellulitis, relative afferent pupillary defect and ophthalmoplegia. Contrast-enhanced magnetic resonance imaging (MRI) brain with orbits revealed orbital apex syndrome (OAS) with cavernous sinus thrombosis ...
Atin Kumar, Biswaroop Chakrabarty, Sheffali Gulati   +2 more
exaly   +4 more sources

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Orbital apex: correlative anatomic and CT study

American Journal of Roentgenology, 1985
A detailed analysis of the coronal anatomic and CT appearances of the orbital apex is presented. In cadavers, coronal CT 9800 scans of the orbital apex and precisely corresponding cryomicrotomic sections were obtained. The CT appearance of the optic nerve, anulus of Zinn, and cranial nerves III-VI at the superior orbital fissure and orbital apex were ...
D L, Daniels, P, Pech, M C, Kay, K, Pojunas, A L, Williams, V M, Haughton   +5 more
openaire   +2 more sources

The relationship of the apical foramen to the anatomic apex of the tooth root

Oral Surgery, Oral Medicine, Oral Pathology, 1972
Abstract Eight hundred and seventy-seven teeth were examined to determine the frequency, direction, and distance of deviation of the major formen from the anatomic root apex. The frequency of deviation averaged 92.4 per cent, depending on the class of tooth examined.
J G, Burch, S, Hulen
openaire   +2 more sources

Anatomical Study of the Root Apex in the Maxillary Anterior Teeth

Journal of Endodontics, 1992
The purpose of this study was to investigate anatomically the apical portion of the root canal of human maxillary anterior teeth. Thirty maxillary central incisors, 30 maxillary lateral incisors, and 30 maxillary cuspids were used. These were teeth from patients ranging in age from 11 to 73 yr.
T, Mizutani, N, Ohno, H, Nakamura
exaly   +3 more sources

Anatomic and Radiographic Analysis of the Optic Canal and Orbital Apex

Archives of Ophthalmology, 1970
Hypocycloidal tomograms were obtained at every millimeter of a cadaver head positioned so that the axis of the optic canal was perpendicular to the radiographic film. Without change of position, the head was frozen and sliced. Four 1-mm thick sections of the optic canal and orbital apex were obtained.
G D, Potter, S L, Trokel
openaire   +2 more sources

Endoscopic transorbital route to the petrous apex: a feasibility anatomic study

Acta Neurochirurgica, 2017
While the subtemporal approach represents the surgical module milestone designed to reach the petrous apex, a novel ventral route, which is the superior eyelid endoscopic transorbital approach, has been proposed to access the skull base. Accordingly, we aimed to evaluate the feasibility of this route to the petrous apex, providing a qualitative and ...
Di Somma, Alberto, Andaluz, Norberto, Cavallo, Luigi Maria, Topczewski, Thomaz E., Frio, Federico, Gerardi, Rosa Maria, Pineda, Jose, Solari, Domenico, Enseñat, Joaquim, Prats-Galino, Alberto, Cappabianca, Paolo   +10 more
openaire   +3 more sources

Anatomic comparison of nasal versus lateral surgical access to the petrous apex

Clinical Anatomy, 2012
To compare anatomic access to the petrous apex via the nasal and lateral approaches. Hundred consecutive fine‐cut CT temporal bones at the Royal Melbourne Hospital from July 27, 2007 to October 30, 2010 were reviewed. Easy lateral access allowed use of a 4 mm burr past vital structures. Easy nasal access was defined as sphenoid pneumatization to/beyond
Tim A, Iseli, John, Yahng, Randal, Leung, Robert J S, Briggs, James A J, King, Pramit M, Phal   +5 more
openaire   +2 more sources

Anatomic Evaluation of Endoscopic Transnasal Transorbital Approach to the Lateral Orbital Apex

American Journal of Rhinology & Allergy, 2014
Background This anatomic study investigates the feasibility of an endoscopic transnasal transorbital approach to the lateral orbital apex. Methods Five cadavers with no prior history of sinus surgery were studied bilaterally.
Bianca, Kenyon, Jastin L, Antisdel
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Anatomic Access to the Petrous Apex: Comparing Nasal and Lateral Approaches

Otolaryngology–Head and Neck Surgery, 2011
ObjectiveCompare the anatomic access to the petrous apex via the nasal and lateral approaches using CT reconstructions.MethodA total of 200 consecutive fine cut CT temporal bones performed at Royal Melbourne Hospital from July 27, 2007, to October 30, 2010, were reviewed. Easy lateral access allowed use of a 4mm burr past vital structures.
Tim A. Iseli, James King, John Yahng, Randal Leung   +3 more
openaire   +1 more source

Anatomical study on the shoot apex ofOsmunda japonica thunb

The Botanical Magazine Tokyo, 1977
The ontogenetic and seasonal variations in the organization of the shoot apical meristem ofOsmunda japonica Thunb. were investigated. The meristem is composed of an apical segmentation zone (SZ), a mother cell zone of the stele (MS) and a periphereal zone (PZ).
openaire   +1 more source