摘要:

By means of simultaneous cineradiographic and manometric examinations using closely positioned microtransducers the maximal pressure of the upper oesophageal sphincter was found at a level 20 mm below the plane of the vocal folds and 6 mm above the level of the cricoid arch. The sum of these 2 distances is in accordance with the distance between the vocal fold level and the lower border of the cricoid arch given in the literature. This implies that the high pressure zone of the upper oesophageal sphincter corresponds to the pars fundiformis of the cricopharyngeus muscle. The lower part of the inferior pharyngeal constrictor and the upper circular muscle fibres of the oesophagus contribute to the sphincter. When the bolus approached the sphincter, the phincter, the pressure decreased and during bolus passage the pressure was below or well below half of the resting pressure. The pressure profile disclosed no signs of muscular dyscoordination or discontinuity of the upper oesophageal sphincter.

ISSN:0307-7772    

DOI:10.1111/j.1365-2273.1989.tb00338.x

出版商:Blackwell Publishing Ltd    

年代:1989

数据来源: WILEY

摘要:

The scans of 120 patients with proven head and neck cancer who underwent magnetic resonance imaging (MRI) at Mt. Vernon hospital were reviewed and, where possible, compared with their clinical, computed tomography (CT) and histological findings. MRI was generally superior to both clinical examination and CT in the detection of cervical lymphadenopathy and in the assessment of primary tumour extent, particularly in the tongue base, nasopharynx and parotid gland. Small intractranial tumour extensions were more readily detected by MRI than CT. MRI was no better than CT in distinguishing between malignant and inflamed tissues and was generally inferior to CT in spatial resolution, patient acceptance and examination cost.

ISSN:0307-7772    

DOI:10.1111/j.1365-2273.1989.tb00339.x

出版商:Blackwell Publishing Ltd    

年代:1989

数据来源: WILEY

ISSN:0307-7772    

DOI:10.1111/j.1365-2273.1989.tb00340.x

出版商:Blackwell Publishing Ltd    

年代:1989

数据来源: WILEY

摘要:

Otolaryngology‐Head and Neck Surgery: Principles and Conceptsby Jerry Templer, William Davis, Gregory Renner and James Thelin.Surgical Treatment of Middle Ear Cholesteatoma.Advances in Otorhinolaryngologyedited by C. R. Pfaltz.A Colour Atlas of ENT Diagnosis.Second edition by T. R. Bull.Immunobiology, Histophysiology, Tumour Immunology in Otorhinolaryngologyedited by J. Veldman.A Colour Atlas of Fibreoptic Endoscopy of the Upper Respiratory Tractby John D. Shaw and Jack N. Lancer.Otitis Media in Infants and Childrenby Charles D. Bluestone and Jerome 0. Klein.The Ear: Diagnostic Imaging CT Scanner, Tomography and Magnetic Resonanceedited by J. Vignaud, C. Jardin and L. Rosen. Masso

ISSN:0307-7772    

DOI:10.1111/j.1365-2273.1989.tb00341.x

出版商:Blackwell Publishing Ltd    

年代:1989

数据来源: WILEY