In vivo thyroid vibro-acoustography: A pilot study

Azra Alizad, Matthew W. Urban, John C. Morris, Carl C. Reading, Randall R. Kinnick, James F. Greenleaf, Mostafa Fatemi

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


Background: The purpose of this study was to evaluate the utility of a noninvasive ultrasound-based method, vibro-acoustography (VA), for thyroid imaging and determine the feasibility and challenges of VA in detecting nodules in thyroid. Methods: Our study included two parts. First, in an in vitro study, experiments were conducted on a number of excised thyroid specimens randomly taken from autopsy. Three types of images were acquired from most of the specimens: X-ray, B-mode ultrasound, and vibro-acoustography. The second and main part of the study includes results from performing VA and B-mode ultrasound imaging on 24 human subjects with thyroid nodules. The results were evaluated and compared qualitatively. Results: In vitro vibro-acoustography images displayed soft tissue structures, microcalcifications, cysts and nodules with high contrast and no speckle. In this group, all of US proven nodules and all of X-ray proven calcifications of thyroid tissues were detected by VA. In vivo results showed 100% of US proven calcifications and 91% of the US detected nodules were identified by VA, however, some artifacts were present in some cases. Conclusions: In vitro and in vivo VA images show promising results for delineating the detailed structure of the thyroid, finding nodules and in particular calcifications with greater clarity compare to US. Our findings suggest that, with further development, VA may be a suitable imaging modality for clinical thyroid imaging.

Original languageEnglish (US)
Article number12
JournalBMC Medical Imaging
Issue number1
StatePublished - Mar 27 2013


  • Elasticity imaging techniques
  • Imaging
  • Thyroid neoplasm
  • Thyroid nodule
  • Ultrasound
  • Vibro-acoustography

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging


Dive into the research topics of 'In vivo thyroid vibro-acoustography: A pilot study'. Together they form a unique fingerprint.

Cite this