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Abdom Radiol (NY). 2016 Oct;41(10):1899-905. doi: 10.1007/s00261-016-0792-x.

CT gastrography for volumetric measurement of remnant stomach after distal gastrectomy: a feasibility study.

Author information

1
Department of Radiology, Bioimaging Center, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul, 138-736, Republic of Korea.
2
Department of Radiology, University of Ulsan College of Medicine, Ulsan University Hospital, Ulsan, Republic of Korea.
3
Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea.
4
Department of Radiology, Bioimaging Center, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul, 138-736, Republic of Korea. medimash@gmail.com.

Abstract

PURPOSE:

To evaluate the feasibility of post-operative CT gastrography for volumetry of the remnant stomach in gastric cancer patients treated with distal gastrectomy.

METHODS:

CT gastrography was performed with oral administration of effervescent granules in 35 gastric cancer patients who underwent distal gastrectomy. Two readers independently rated the degree of gastric distension on a four-point scale, one (near-total collapse) to four (well distended) and measured the volume of remnant stomach using either 3D or 2D volumetry. The inter-volumetry agreements between the 2D and 3D methods and the interobserver agreements between readers 1 and 2 were assessed by intraclass correlation coefficients (ICCs) and Bland-Altman plots.

RESULTS:

The mean score of gastric distension was 3.4 ± 0.6 points and 3.4 ± 0.7 points from readers 1 and 2, respectively. We regarded CT images scored with 3-4 points as a technical success for reliable CT volumetry, which achieved a rate of 91.4% (32/35). For the inter-volumetry agreements between 3D and 2D volumetry, the ICCs were 0.9778 and 0.9814 from readers 1 and 2, respectively. The interobserver agreement between readers 1 and 2 was also excellent, with ICCs of 0.9961 and 0.9876 for 2D and 3D volumetry, respectively. On Bland-Altman plots, the means of differences between any pairs of volumetry measurements ranged from -31.1 to 3.2 cm(3), which may be an acceptable range of measurement variability.

CONCLUSIONS:

Post-operative CT gastrography is feasible in patients treated with distal gastrectomy. Both 2D and 3D volumetry methods are comparable in measuring the remnant stomach volume.

KEYWORDS:

Computed tomography; Gastrectomy; Gastrography; Stomach; Volumetry

PMID:
27251737
DOI:
10.1007/s00261-016-0792-x
[Indexed for MEDLINE]

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