title: Comparison of conventional B-scan, tissue harmonic imaging, compound imaging and tissue harmonic compound imaging in neck lesion characterisation.
abstract: In recent years, further technical developments of ultrasound scanning techniques, such as tissue harmonic imaging (THI) and compound imaging (CI), have become available and promise considerable improvement in image quality. No comparative assessments have yet been made of their systematic use in the head and neck. We studied 313 lesions of the head and neck detected on ultrasound scanning. Ultrasound images were obtained using a state-of-the-art scanning system. Two experts evaluated the images obtained for each lesion with conventional B-scan mode (BSCAN), THI, CI, and tissue harmonic compound imaging (THICI) with respect to four different aspects of image quality. Largely concordant results were found for each of the parameters studied: overall image quality, tissue contrast, lesion conspicuity, and internal structure. Evaluations of CI and THICI were frequently ranked higher (p < 0.001) than BSCAN and THI (p < 0.001). Images obtained in BSCAN mode often had better scores than images in THI mode alone (p < 0.001). Comparison of CI and THICI showed no statistically significant differences for any of the parameters studied. After a learning period, compound imaging methods improve image quality of the soft tissues of neck and may be included in the routine settings of ultrasound systems.
authors.affiliation: Department of Otorhinolaryngology, Head and Neck Surgery, FAU Medical School, University of Erlangen-Nuremberg, Waldstrasse 1, 91054, Erlangen, Germany. alessandro.bozzato@uk-erlangen.de
authors.forename: Alessandro
authors.initials: A
authors.lastname: Bozzato
authors.forename: Anne
authors.initials: A
authors.lastname: Loika
authors.forename: Joachim
authors.initials: J
authors.lastname: Hornung
authors.forename: Michael
authors.initials: M
authors.lastname: Koch
authors.forename: Johannes
authors.initials: J
authors.lastname: Zenk
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Uter
authors.forename: Heinrich
authors.initials: H
authors.lastname: Iro
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D015331:Cohort Studies; D005260:Female; D006258:Head and Neck Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology / Q000503:physiopathology; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008297:Male; D008875:Middle Aged; D015588:Observer Variation; D011237:Predictive Value of Tests; D015203:Reproducibility of Results; D014463:Ultrasonography / Q000379:methods*; D055815:Young Adult