title: Value of high-resolution contrast-enhanced ultrasound in detection and characterisation of endoleaks after EVAR.
abstract: OBJECTIVE
  To compare the value of high-resolution contrast-enhanced ultrasound in the detection and characterisation of endoleaks after EVAR.
  
  
  METHODS
  In this retrospective study, a cohort of 80 patients underwent both standard examination using a curved array 5 MHz transducer and a second examination using a curved array 9 MHz transducer. The examination included B-mode, color Doppler and contrast-enhanced ultrasound using the Philips EPIQ 7 scanner.
  
  
  RESULTS
  80 patients were included in the study. CEUS was used as the preferred examination in determining the presence of an endoleak. The sensitivity and specificity for the detection of endoleak using the 5 MHz transducer was: CEUS (96.8%, 100%), Color Doppler (47.6%, 94.1%), B-mode (15.8%, 94.1%), while for the 9 MHz transducer: CEUS (100%, 100%), Color Doppler (39.7%, 94.1%), B-mode (23.8%, 24.1%).
  
  
  CONCLUSIONS
  High resolution ultrasound (9 MHz) in detection and characterization of endoleaks after EVAR has some minor advantages in comparison to lower resolution ultrasound (5 MHz).
authors.affiliation: Institute for Clinical Radiology, Ludwig-Maximilians-University Hospital Munich-Grosshadern, Germany.
authors.forename: H
authors.initials: H
authors.lastname: Zimmermann
authors.affiliation: Institute for Clinical Radiology, Ludwig-Maximilians-University Hospital Munich-Grosshadern, Germany.
authors.forename: M
authors.initials: M
authors.lastname: D'Anastasi
authors.affiliation: Institute for Clinical Radiology, Ludwig-Maximilians-University Hospital Munich-Grosshadern, Germany.
authors.forename: D
authors.initials: D
authors.lastname: Rjosk-Dendorfer
authors.affiliation: Institute for Clinical Radiology, Ludwig-Maximilians-University Hospital Munich-Grosshadern, Germany.
authors.forename: A
authors.initials: A
authors.lastname: Helck
authors.affiliation: Department of Surgery, Ludwig-Maximilians-University Hospital Munich-Grosshadern, Germany.
authors.forename: G
authors.initials: G
authors.lastname: Meimarakis
authors.affiliation: Institute for Clinical Radiology, Ludwig-Maximilians-University Hospital Munich-Grosshadern, Germany.
authors.forename: M
authors.initials: M
authors.lastname: Reiser
authors.affiliation: Institute for Clinical Radiology, Ludwig-Maximilians-University Hospital Munich-Grosshadern, Germany.
authors.forename: D A
authors.initials: DA
authors.lastname: Clevert
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D017544:Aortic Aneurysm, Abdominal / Q000000981:diagnostic imaging* / Q000473:pathology; D003287:Contrast Media / Q000737:chemistry*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015203:Reproducibility of Results; D012189:Retrospective Studies; D012680:Sensitivity and Specificity; D014159:Transducers; D016896:Treatment Outcome; D018608:Ultrasonography, Doppler
chemical_list: D003287:Contrast Media
keywords: AAA; CEUS; EVAR; Endoleak; high resolution ultrasound