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Evaluation of gallbladder volume and contraction index with three-dimensional ultrasonography in healthy dogs.

Rahmani V, Molazem M, Jamshidi S, Vali Y, Hanifeh M - J. Vet. Med. Sci. (2015)

Bottom Line: Therefore, we applied this novel technique for the first time to study fasting and postprandial gallbladder volume in 10 healthy dogs and compared the results with those of 2-dimensional (2D) ultrasonography.Additionally, gallbladder volumes were significantly decreased in the postprandial state compared with the fasting state using 3D ultrasonography (P<0.001), but 2D ultrasonography showed no significant difference (P=0.189).In conclusion, 3D ultrasonography was able to measure gallbladder volume in healthy dogs in this study.

View Article: PubMed Central - PubMed

Affiliation: Department of Radiology, Faculty of Veterinary Medicine, University of Tehran, P. O. Box 14155-6453, Tehran, Iran.

ABSTRACT
Three-dimensional (3D) ultrasonography has been shown to be an accurate and appropriate tool for measurement of gallbladder volume in humans. Therefore, we applied this novel technique for the first time to study fasting and postprandial gallbladder volume in 10 healthy dogs and compared the results with those of 2-dimensional (2D) ultrasonography. Fasting gallbladder volumes determined by 3D ultrasonography were significantly higher than corresponding volumes determined by 2D ultrasonography (P<0.01). Additionally, gallbladder volumes were significantly decreased in the postprandial state compared with the fasting state using 3D ultrasonography (P<0.001), but 2D ultrasonography showed no significant difference (P=0.189). The Gallbladder contraction index was higher in 3D ultrasonography than 2D ultrasonography; however, it did not reach statistical significance (P=0.25). In conclusion, 3D ultrasonography was able to measure gallbladder volume in healthy dogs in this study. It is suggested that 3D ultrasonography can be used to accurately estimate gallbladder volume and contractility.

No MeSH data available.


Related in: MedlinePlus

Representative 3D ultrasound image of the gallbladder. The upper left image representsthe longitudinal plane (the A plane), the upper right image represents the transverseplane (the B plane), and the lower left image represents the coronal plane (the Cplane). A 30° rotational angle was used, and the gallbladder contours in thelongitudinal plane, as a reference plane, were manually traced. Then,the VOCAL software constructed a 3D image of the gallbladder (lower right image) andautomatically measured the gallbladder volume.
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fig_001: Representative 3D ultrasound image of the gallbladder. The upper left image representsthe longitudinal plane (the A plane), the upper right image represents the transverseplane (the B plane), and the lower left image represents the coronal plane (the Cplane). A 30° rotational angle was used, and the gallbladder contours in thelongitudinal plane, as a reference plane, were manually traced. Then,the VOCAL software constructed a 3D image of the gallbladder (lower right image) andautomatically measured the gallbladder volume.

Mentions: For 3D ultrasonography, the same ultrasound unit and 5–12 MHz 3D mechanical linear trapezoidtransducer were used. Gallbladder volume by the 3D ultrasonography method was calculated fromthe 3D data sets. During real-time scanning, the transducer was placed over the gallbladderarea to visualize the longitudinal plane of the gallbladder. The sector angle and penetrationdepth were then optimized to the abdominal size. The frame rate, lateral resolution and axialresolution were further adjusted by adjusting the level of magnification. The volume box wasthen adjusted for the region of interest. For obtaining the maximum diameter of thegallbladder, the volume sweep angle was set between 30 to 40 degrees. The fastest scanduration (quality low) was adjusted to have the fastest scanning protocol. In sectional planemode, 3 orthogonal planes (longitudinal, transverse and coronal) were simultaneously displayedon the screen (Fig. 1Fig. 1.


Evaluation of gallbladder volume and contraction index with three-dimensional ultrasonography in healthy dogs.

Rahmani V, Molazem M, Jamshidi S, Vali Y, Hanifeh M - J. Vet. Med. Sci. (2015)

Representative 3D ultrasound image of the gallbladder. The upper left image representsthe longitudinal plane (the A plane), the upper right image represents the transverseplane (the B plane), and the lower left image represents the coronal plane (the Cplane). A 30° rotational angle was used, and the gallbladder contours in thelongitudinal plane, as a reference plane, were manually traced. Then,the VOCAL software constructed a 3D image of the gallbladder (lower right image) andautomatically measured the gallbladder volume.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4591159&req=5

fig_001: Representative 3D ultrasound image of the gallbladder. The upper left image representsthe longitudinal plane (the A plane), the upper right image represents the transverseplane (the B plane), and the lower left image represents the coronal plane (the Cplane). A 30° rotational angle was used, and the gallbladder contours in thelongitudinal plane, as a reference plane, were manually traced. Then,the VOCAL software constructed a 3D image of the gallbladder (lower right image) andautomatically measured the gallbladder volume.
Mentions: For 3D ultrasonography, the same ultrasound unit and 5–12 MHz 3D mechanical linear trapezoidtransducer were used. Gallbladder volume by the 3D ultrasonography method was calculated fromthe 3D data sets. During real-time scanning, the transducer was placed over the gallbladderarea to visualize the longitudinal plane of the gallbladder. The sector angle and penetrationdepth were then optimized to the abdominal size. The frame rate, lateral resolution and axialresolution were further adjusted by adjusting the level of magnification. The volume box wasthen adjusted for the region of interest. For obtaining the maximum diameter of thegallbladder, the volume sweep angle was set between 30 to 40 degrees. The fastest scanduration (quality low) was adjusted to have the fastest scanning protocol. In sectional planemode, 3 orthogonal planes (longitudinal, transverse and coronal) were simultaneously displayedon the screen (Fig. 1Fig. 1.

Bottom Line: Therefore, we applied this novel technique for the first time to study fasting and postprandial gallbladder volume in 10 healthy dogs and compared the results with those of 2-dimensional (2D) ultrasonography.Additionally, gallbladder volumes were significantly decreased in the postprandial state compared with the fasting state using 3D ultrasonography (P<0.001), but 2D ultrasonography showed no significant difference (P=0.189).In conclusion, 3D ultrasonography was able to measure gallbladder volume in healthy dogs in this study.

View Article: PubMed Central - PubMed

Affiliation: Department of Radiology, Faculty of Veterinary Medicine, University of Tehran, P. O. Box 14155-6453, Tehran, Iran.

ABSTRACT
Three-dimensional (3D) ultrasonography has been shown to be an accurate and appropriate tool for measurement of gallbladder volume in humans. Therefore, we applied this novel technique for the first time to study fasting and postprandial gallbladder volume in 10 healthy dogs and compared the results with those of 2-dimensional (2D) ultrasonography. Fasting gallbladder volumes determined by 3D ultrasonography were significantly higher than corresponding volumes determined by 2D ultrasonography (P<0.01). Additionally, gallbladder volumes were significantly decreased in the postprandial state compared with the fasting state using 3D ultrasonography (P<0.001), but 2D ultrasonography showed no significant difference (P=0.189). The Gallbladder contraction index was higher in 3D ultrasonography than 2D ultrasonography; however, it did not reach statistical significance (P=0.25). In conclusion, 3D ultrasonography was able to measure gallbladder volume in healthy dogs in this study. It is suggested that 3D ultrasonography can be used to accurately estimate gallbladder volume and contractility.

No MeSH data available.


Related in: MedlinePlus