B-line detection using amplitude modulation-frequency modulation (AM-FM) features

Gustavo Chau, Gabriela Mamani, Edmundo Pozo Fortunic, Sergio Serpa, Omar Zenteno, Dante Ramos, Gilberto Penã, Gilma Fredes, Elizabeth Chura, Eduardo Ticona, Haley Manella, Viveta Lobo, Jeremy Dahl, Benjamín V. Castañeda, Roberto Lavarello

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


Pneumonia is one of the most common acute respiratory infections among pediatric populations worldwide. Ultrasound is becoming increasingly important in the diagnosis of lung diseases as a more portable and safer alternative to X-ray imaging. In the current work, we present a new automatic system for detection of B-lines, one of the distinctive features of pneumonic ultrasound scans, using amplitude modulation-frequency modulation (AM-FM). Features are evaluated on 109 videos obtained from 100 pediatric patients using a Verasonics V1 scanner. Further, the results were compared to the ones obtained with a previously published spectral feature (SF) method. Sensitivities of 92% and 83% and specificities of 91% and 70% were obtained on zone-1 and zone-2 of the lungs, respectively. In contrast, the SF method provided sensitivities of 72% and 68% in zone-1 and zone-2, respectively, and specificities of 68% and 46% in zone-1 and zone-2, respectively. In addition, the AM-FM method allowed increasing the F1-score when compared to the SF method from 70% to 87% and from 61% to 78% in zone-1 and zone-2, respectively. The results suggest the proposed method may be useful for the computer assisted diagnosis of pneumonia.

Original languageEnglish
Title of host publicationMedical Imaging 2018
Subtitle of host publicationUltrasonic Imaging and Tomography
EditorsNeb Duric, Brett C. Byram
ISBN (Electronic)9781510616493
StatePublished - 2018
EventMedical Imaging 2018: Ultrasonic Imaging and Tomography - Houston, United States
Duration: 13 Feb 201815 Feb 2018

Publication series

NameProgress in Biomedical Optics and Imaging - Proceedings of SPIE
ISSN (Print)1605-7422


ConferenceMedical Imaging 2018: Ultrasonic Imaging and Tomography
Country/TerritoryUnited States

Bibliographical note

Publisher Copyright:
© 2018 SPIE.


  • AM-FM analysis
  • lung ultrasound
  • pneumonia


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