title: [Value of B-image ultrasound in diagnosis of paranasal sinus diseases in comparison with computerized tomography].
abstract: BACKGROUND
  In diagnostic imaging of the paranasal sinuses, the A-mode technique is increasingly being substituted by B-mode ultrasonography. To assess the value of B-mode sonography we compared in a double-blind study computed tomography with our ultrasound findings.
  
  
  METHODS
  Seventy-eight patients were examined by CT and subsequently by ultrasound, two-thirds before endonasal surgery and one-third for diagnosis of serious facial pain and swelling.
  
  
  RESULTS
  Among 114 pathological maxillary sinus tomograms, 83 findings could also be diagnosed by ultrasound (sensitivity 72.8%). In the frontal sinuses only 12 of 52 of pathological findings could be detected (23.1%) and only 9 of 80 in the frontal ethmoid (11.3%). Except for circumscribed polyps and moderate general swelling of the mucosa, the detection rate by sonography was 97.4% for the maxillary sinuses, 31.5% for the frontal and 18% for the ethmoid sinuses.
  
  
  CONCLUSIONS
  Ultrasound usually only demonstrates the presence of absence or unspecific findings. Differential diagnosis between tumors and sinusitis is generally difficult. The healthy individual is correctly assessed as healthy due to the total reflection of the air-filled healthy sinus. According to our findings ultrasound has a certain value in the diagnosis of maxillary sinuses. It can be used to obtain a preliminary diagnosis and as a screening method although a negative result never excludes a disease of the sinuses. As it does not involve radiation exposure, ultrasonography can be recommended as first step in diagnosis for children, pregnant women, and young women especially in acute sinusitis, because in acute sinusitis the maxillary sinuses are generally affected.
authors.affiliation: Abteilung für Radiologie u. Nuklearmedizin, St. Elisabeth-Hospital gGmbH Bochum.
authors.forename: K U
authors.initials: KU
authors.lastname: Tiedjen
authors.forename: E
authors.initials: E
authors.lastname: Becker
authors.forename: K D
authors.initials: KD
authors.lastname: Heimann
authors.forename: S
authors.initials: S
authors.lastname: Knorz
authors.forename: H
authors.initials: H
authors.lastname: Hildmann
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010254:Paranasal Sinus Diseases / Q000175:diagnosis*; D010255:Paranasal Sinus Neoplasms / Q000175:diagnosis; D011247:Pregnancy; D012680:Sensitivity and Specificity; D012852:Sinusitis / Q000175:diagnosis; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography
vernacular_title: Wertigkeit der B-Bild-Sonographie in der Diagnostik von Nasennebenhöhlenerkrankungen im Vergleich zur Computertomographie.