منابع مشابه
Radiation Dose Reduction in Paranasal Sinus CT
Objectives. To (1) compare the radiation dose of low-dose computed tomography (CT) to that of standard-dose CT, (2) determine the minimum optimal radiation dose for use in patients who need endoscopic sinus surgery, and (3) assess the reliability of iterative model reconstruction. Study Design. Prospective single-institution study. Setting. Tertiary care center. Subjects and Methods. We recruit...
متن کاملCT signs of pressure induced expansion of paranasal sinus structures
Several articles have been written about hyper infl ated sinus structures. Never before, however, a complete overview of all possible pressure induced variations of sinus anatomy have been published. The aim of this study was to make an inventory of the most common CT signs of hyper infl ated paranasal sinus structures. During a period of 2 years all CT-scans of the paranasal sinuses made in an...
متن کاملIncidental paranasal sinus abnormalities on CT of children: clinical correlation.
The paranasal sinuses were prospectively evaluated by CT, clinical history, and physical examination in infants and children having cranial CT for indications unrelated to upper respiratory inflammation (URI). One hundred and one CT scans were studied, and sinus abnormalities were detected in 18% of patients older than 1 year and without signs or symptoms of URI. When signs and/or symptoms of r...
متن کاملIrrigation Nose: CT Findings of Paranasal Sinus Exostoses
We report the case of a 57-year-old male who presented with recurrent sinus infections and frequent nasal irrigation. He was found at nasal endoscopy to have multiple outgrowths along his ethmoid and maxillary sinuses. Computed tomography (CT) showed multiple bony exostoses along these sinuses. We report the imaging findings of exostoses associated with sinonasal irrigation.
متن کاملParanasal sinus involvement in thalassemia major: CT demonstration.
Beta thalassemia is a blood dyscrasia caused by defective synthesis of the beta chain of hemoglobin. This causes severe anemia due to ineffective erythropoiesis and peripheral hemolysis of the defective red cells . Marked expansion of active marrow spaces and extramedullary hematopoiesis result. Classic radiographic findings of thalassemia, in particular the hair-on-end appearance in the skull ...
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ژورنال
عنوان ژورنال: Journal of Clinical Otolaryngology Head and Neck Surgery
سال: 1993
ISSN: 1225-0244,2713-833X
DOI: 10.35420/jcohns.1993.4.2.236