ABSTRACT
OBJECTIVE: The stapes is difficult to analyse on computed tomography because of the small size of its components and its oblique orientation. The stapes axial plane, parallel to the superstructure, seems optimal for this purpose. The present study assessed the position of the stapes axial plane with respect to the usual axial plane including the lateral semicircular canal, and sought to measure the main dimensions of the stapes. METHODS: This retrospective study comprised 208 computed tomography scans of normal ears. Stapes length and width, footplate thickness and incudostapedial joint width were measured. RESULTS: The stapes axial plane was directed upward, outward (44°) and forward (12°) with respect to the lateral semicircular canal plane. Mean head-to-footplate distance was 3.7 mm and mean superstructure width was 2.7 mm. Mean footplate thickness was 0.27 mm on stapes axial plane versus 0.48 mm on lateral semicircular canal plane. Incudostapedial joint width was systematically less than 0.7 mm. CONCLUSION: Stapes dimensions on stapes axial plane were close to anatomical data, particularly for footplate thickness.
Subject(s)
Biometry/instrumentation , Stapes/anatomy & histology , Stapes/diagnostic imaging , Tomography, X-Ray Computed/methods , Tomography, X-Ray Computed/standards , Adult , Biometry/methods , Humans , Incus/anatomy & histology , Incus/diagnostic imaging , Reference Values , Retrospective Studies , Semicircular Canals/anatomy & histology , Semicircular Canals/diagnostic imagingABSTRACT
BACKGROUND: Although a CT scan is often performed after functional endoscopic sinonasal surgery (FESS) in patients with chronic rhinosinusitis, its role hasn`t been firmly established. The goal of this study is to investigate the correlation between symptoms and CT findings before and after FESS for chronic rhinosinusitis. In addition, the interobserver agreement for both sinonasal aerial volumetry and CT score is assessed. METHODS: Thirty-three patients surgically treated for chronic rhinosinusitis were included in this prospective study. Conventional and modified Lund-Mackay scores and sinonasal volumetry were determined by two radiologists before (M0), at 3 months (M3) and 1 year (M12) after surgery. The symptoms were evaluated by the 22-item SinoNasal Outcome Test (SNOT-22). RESULTS: Change of SNOT-22 and air volume were significantly correlated between M0 and M12, but not between M0 and M3, for both readers. Compared to other scores, volume had the best intraclass correlation coefficient and reproducibility, according to the Bland-Altman analysis. No correlation was found between SNOT-22 and CT scores before and after surgery, except between M12 and M0 for one reader. CONCLUSION: The correlation between CT scan and symptoms is low or absent. The measurement of sinonasal air volume is best correlated with the symptoms after surgery, with the best inter-observer agreement.
Subject(s)
Endoscopy/methods , Rhinitis/diagnostic imaging , Rhinitis/surgery , Sinusitis/diagnostic imaging , Sinusitis/surgery , Tomography, X-Ray Computed , Adult , Aged , Chronic Disease , Female , Humans , Male , Middle Aged , Prospective Studies , Treatment OutcomeSubject(s)
Fusobacterium Infections/diagnosis , Fusobacterium necrophorum , Image Interpretation, Computer-Assisted , Ovary/blood supply , Sepsis/diagnosis , Tomography, X-Ray Computed , Venous Thrombosis/diagnosis , Diagnosis, Differential , Female , Humans , Middle Aged , Respiratory Distress Syndrome/diagnosisSubject(s)
Aortic Aneurysm, Thoracic/diagnostic imaging , Carcinoma, Squamous Cell/diagnostic imaging , Image Processing, Computer-Assisted , Lung Neoplasms/diagnostic imaging , Multimodal Imaging , Positron-Emission Tomography , Pulmonary Atelectasis/diagnostic imaging , Pulmonary Atelectasis/etiology , Tomography, X-Ray Computed , Aged , Aortic Aneurysm, Thoracic/pathology , Aortic Aneurysm, Thoracic/surgery , Biopsy, Needle , Bronchoscopy , Carcinoma, Squamous Cell/pathology , Carcinoma, Squamous Cell/surgery , Constriction, Pathologic/diagnostic imaging , Constriction, Pathologic/etiology , Diagnosis, Differential , Humans , Lung/diagnostic imaging , Lung/pathology , Lung Neoplasms/pathology , Lung Neoplasms/surgery , Male , Neoplasm Staging , PneumonectomySubject(s)
Abdominal Pain/diagnostic imaging , Angioedema/diagnostic imaging , Colonic Diseases/diagnostic imaging , Complement C1 Inactivator Proteins/deficiency , Tomography, X-Ray Computed , Adult , Ascites/diagnostic imaging , Colon, Transverse/diagnostic imaging , Complement C1 Inhibitor Protein , Contrast Media/administration & dosage , Diagnosis, Differential , Female , HumansSubject(s)
Angiomyolipoma/complications , Kidney Neoplasms/complications , Neoplasms, Multiple Primary/complications , Tuberous Sclerosis/diagnosis , Adult , Angiomyolipoma/diagnosis , Angiomyolipoma/surgery , Female , Humans , Kidney Neoplasms/diagnostic imaging , Kidney Neoplasms/surgery , Magnetic Resonance Imaging , Neoplasms, Multiple Primary/diagnosis , Neoplasms, Multiple Primary/surgery , Tomography, X-Ray ComputedABSTRACT
Radiological maxillary sinusitis (RMS) is not an easily diagnosed in Intensive Care Unit (ICU). B-mode ultrasound of paranasal sinuses, validated for the ambulatory patients, was evaluated in a prospective study. One hundred fifty three ultrasound examinations were performed on 30 critically ill patients and compared to CT scan or radiography (Blondeau's view). Two levels of positive echographia are described: positive echographia corresponding with a moderate lesion, cupuliform echographia when the lesion is more significant. Its good predictive negative value when the echographia is negative and its predictive positive value of 100% when the echographia is cupuliform allow to recommend B-mode ultrasound as the best investigation for the diagnosis of maxillary sinusitis in a ICU. Diagnostic ultrasound represents a rapid, painless, innocuous and easily reproducible means of monitoring.
