No abstract

classified qualitatively according to elastographic colour pattern: predominantly blue, predominantly green and mixed. Strain ratios (SR) were calculated to give quantitative measures of elasticity. Measures were compared to PET and subgroup analyses according to LN FDG avidity were performed. Finally the influence of various technical factors (probe pressure, Region of interest selection, and frame average function) were assessed. Result: There were 82 LNs from 50 patients who underwent EBUS elastography with the final diagnosis being malignant in 29(35%) and non-malignant in 57(69%). PET was available for 58 LNs. Diagnostic indices relating to elastographic features and effects of various technical factors are shown in Table 1. Conclusion: EBUS elastography can identify malignant LNs with equivalent power to sonography and FDG PET and may have a role in selecting which PET-negative nodes require sampling in staging procedures. It is highly dependent on technique which must be standardised to ensure accuracy of results. Please note: Data acquisition is still underway and planned to continue for a further 2 months. Analysis shall be complete by the time of the conference.

No abstract

No abstract