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Title: Computed tomography of temporal bone pneumatization. 1. Normal pattern and morphology

The pneumatization of 141 normal temporal bones on computed tomography (CT) was evaluated in 100 patients. Because of the controversy surrounding the sclerotic squamomastoid (mastoid), temporal bones with this finding were discarded. A CT index of pneumatization was based on the pneumatized area and the number of cells seen within a representative scanning section. Results suggest that squamomastoid pneumatization follows the classic normal distribution and does not correlate with age, gender, or laterality. A high degree of symmetry was found in 41 patients who had both ears examined. Air-cell configuration was variable. Air-cell size tended to increase progressively from the mastoid antrum. The scutum pseudotumor appearance caused by incomplete pneumatization was seen frequently, and should not be mistaken for mastoiditis or an osteoma. Thick sections producing partial-volume effect may also produce this spurious finding. Therefore, when searching for mucosal thickening due to mastoiditis, large air cells should preferably be analyzed.
Authors:
; ; ; ;
Publication Date:
OSTI Identifier:
5178308
Report Number(s):
CONF-860416-
Journal ID: CODEN: AAJRD; TRN: 85-023763
Resource Type:
Conference
Resource Relation:
Journal Name: AJR, Am. J. Roentgenol.; (United States); Journal Volume: 145:3; Conference: ARRS meeting, Washington, DC, USA, 14 Apr 1986
Research Org:
Yale-New Haven Hospital, CT
Country of Publication:
United States
Language:
English
Subject:
62 RADIOLOGY AND NUCLEAR MEDICINE; BONE TISSUES; MORPHOLOGY; SINUSES; ANATOMY; SKULL; COMPUTERIZED TOMOGRAPHY; AUDITORY ORGANS; PATIENTS; ANIMAL TISSUES; BODY; CONNECTIVE TISSUE; DIAGNOSTIC TECHNIQUES; ORGANS; SENSE ORGANS; SKELETON; TISSUES; TOMOGRAPHY 550602* -- Medicine-- External Radiation in Diagnostics-- (1980-)