Df. Leotta et al., PERFORMANCE OF A MINIATURE MAGNETIC POSITION SENSOR FOR 3-DIMENSIONALULTRASOUND IMAGING, Ultrasound in medicine & biology, 23(4), 1997, pp. 597-609
Citations number
20
Categorie Soggetti
Radiology,Nuclear Medicine & Medical Imaging",Acoustics
A miniature magnetic position sensor used for three-dimensional ultras
ound imaging was tested for precision and accuracy in vitro. The senso
r alone was able to locate points with root-mean-square (rms) uncertai
nty of 1.7 mm and accuracy of 0.05 +/- 0.62 mm over its specified oper
ating range of 50 cm, With an ultrasound imaging system, a point was l
ocated from arbitrary viewing windows with 2.4-mm rms uncertainty and
0.06 +/- 0.68 mm accuracy, If viewing windows were Limited to those re
presentative of a typical ultrasound examination, the system could ach
ieve rms uncertainty in point location of < I mm, Performance was not
affected by operation of the imaging system when the sensor was mounte
d on an ultrasound scanhead. Sensitivity to metals in the operating en
vironment was also measured, (C) 1997 World Federation for Ultrasound
in Medicine & Biology.