In vitro and in vivo accuracy of sonographic gallbladder volume determinations
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In vitro and in vivo accuracy of sonographic gallbladder volume determinations. / Andersen, I B; Monrad, H; Grønvall, S; Højgaard, L.
In: Journal of Clinical Ultrasound, Vol. 21, No. 3, 01.03.1993, p. 157-62.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - In vitro and in vivo accuracy of sonographic gallbladder volume determinations
AU - Andersen, I B
AU - Monrad, H
AU - Grønvall, S
AU - Højgaard, L
PY - 1993/3/1
Y1 - 1993/3/1
N2 - To assess gallbladder function, sonographic gallbladder volume determinations have been used with increasing frequency. This study presents a modified and automated procedure for gallbladder volume determinations using Simpson's rule of integration, Simpson's method. This method is a standard option in the data systems of many sonographic instruments. Simpson's method was validated in vitro and in vivo, and it was compared with the sum-of-cylinders method for gallbladder volume determinations. In vitro assessment indicated that the two methods were equally accurate, with Simpson's method being more precise. The absolute deviation was independent of the size of the volume and of the shape of the gallbladder. In vivo Simpson's method was validated on 11 patients with cholecystitis. The gallbladder volumes (mean 65 mL; Range 20 mL to 130 mL) measured by sonography differed from the aspirated volumes by 1.5 mL (SD 10.4 mL). Thus Simpson's method is an accurate, precise, and fast method for sonographic gallbladder volume determination.
AB - To assess gallbladder function, sonographic gallbladder volume determinations have been used with increasing frequency. This study presents a modified and automated procedure for gallbladder volume determinations using Simpson's rule of integration, Simpson's method. This method is a standard option in the data systems of many sonographic instruments. Simpson's method was validated in vitro and in vivo, and it was compared with the sum-of-cylinders method for gallbladder volume determinations. In vitro assessment indicated that the two methods were equally accurate, with Simpson's method being more precise. The absolute deviation was independent of the size of the volume and of the shape of the gallbladder. In vivo Simpson's method was validated on 11 patients with cholecystitis. The gallbladder volumes (mean 65 mL; Range 20 mL to 130 mL) measured by sonography differed from the aspirated volumes by 1.5 mL (SD 10.4 mL). Thus Simpson's method is an accurate, precise, and fast method for sonographic gallbladder volume determination.
KW - Animals
KW - Cholecystitis
KW - Gallbladder
KW - Gallbladder Emptying
KW - Humans
KW - Image Processing, Computer-Assisted
KW - Models, Structural
KW - Swine
KW - Journal Article
M3 - Journal article
C2 - 8382216
VL - 21
SP - 157
EP - 162
JO - Journal of Clinical Ultrasound
JF - Journal of Clinical Ultrasound
SN - 0091-2751
IS - 3
ER -
ID: 165884692