Uncertainty evaluation of dead zone of diagnostic ultrasound equipment

8th Brazilian Congress on Metrology

Souza, R.M.^1 ; Alvarenga, A.V.^1 ; Braz, D.S.^1 ; Petrella, L.I.^2 ; Costa-Felix, R.P.B.^1

Laboratory of Ultrasound, Directory of Scientific and Industrial Metrology, National Institute of Metrology, Quality and Technology, Av. Nossa Sra das Graças 50, Duque de Caxias

RJ

25250-020, Brazil^1

Institute of Nuclear Sciences Applied to Health, University of Coimbra, Portugal^2

关键词: Dead zones;    Diagnostic imaging;    Diagnostic ultrasound;    Guide to the expression of uncertainty in measurements;    Measurement uncertainty;    Ultrasound images;    Uncertainty evaluation;    Uncertainty modeling;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/733/1/012043/pdf
DOI  :  10.1088/1742-6596/733/1/012043

来源: IOP

【 摘 要 】

This paper presents a model for evaluating measurement uncertainty of a feature used in the assessment of ultrasound images: dead zone. The dead zone was measured by two technicians of the INMETRO's Laboratory of Ultrasound using a phantom and following the standard IEC/TS 61390. The uncertainty model was proposed based on the Guide to the Expression of Uncertainty in Measurement. For the tested equipment, results indicate a dead zone of 1.01 mm, and based on the proposed model, the expanded uncertainty was 0.17 mm. The proposed uncertainty model contributes as a novel way for metrological evaluation of diagnostic imaging by ultrasound.