Volume Measurement Using Tissue Characterization of Three-Dimensional Endoscopic Ultrasonographic Images

Abstract

There was a good correlation between the volume measured with 3D-EUS and the volume obtained using tissue characterization. The tissue characterization volumes were only relatively slightly larger than the volumes measured using 3D-EUS, suggesting that there may be some promise for this application of tissue characterization.

Techniques of image enhancement in EUS (with videos)

“…Accurate volume measurements usually are possible with 3-D EUS, being useful for treatment planning and monitoring of tumor response. 65,71 However, based on the limited published data, it is not yet clear whether the results obtained by 3-D EUS are significantly better as compared with the results of 2-dimensional EUS. Consequently, 3-D EUS should be validated in blinded, multicenter studies including large numbers of patients, in comparison with other cross-sectional imaging methods (eg, magnetic resonance imaging) and pathology validation.…”

“…63 Miniprobes were used extensively, especially with systems with radial-linear switchable probes that provide helical scanning and dual-plane reconstructions. [64][65][66][67][68][69] Also, linear scanning echoendoscopes have been used with freehand techniques or electromagnetic tracking devices, based on rotation of the scope along its long axis. 70,71 Different studies also used rigid rectal probes for 3-D endorectal US, enabling pull-back or automatic volume scanning at transverse and longitudinal scan angles.…”

Ultrasonografía endoscópica tridimensional (USE-3D)

“…Un paso adelante en el capítulo del uso de la ecografía 3D en gastroenterología lo representó su aplicación en la ultrasonografía endoscópica (USE) (12)(13)(14)(15), aunque mediante este método parece que los volúmenes encontrados son mayores que en la realidad (15). Así Kallimanis (16) publica en 1994, las imágenes conseguidas en ocho pacientes afectos de tumores esofágicos conseguidas mediante un ecoendoscopio Olympus, digitalizadas y procesadas posteriormente en un PC con un determinado software.…”