Background: Obesity is a condition of gaining excessive body weight . Bariatric surgery procedures are specifically designed for individuals with severe obesity. The function of radiography in gastric bariatric surgery is detecting postoperative problems and assessing the effectiveness of surgical decrease in gastric size following the procedure.

Amis: This study aims to examine the correlation between the decrease in stomach volume after bariatric surgery , and the relevance of MSCT based volumetric assessment of gastric sleeves post-operative .

Patient and methods: This is a prospective study conducted on 20 obese patients from department of the general surgery to Radiology department , Faculty of Medicine, Minya University from November 2022 to November 2023

Results: Weight, BMI and gastric volume measurements were significantly lower 1month and 6months post-operative compared to pre-operative (P value <0.001).

Conclusion: Loss of weight and the size of the gastric volume pouch are significantly correlated. However, there was no correlation between the volume of the gastric pouch and the percentage reduction in extra body weight.

Keywords: Volumetric, sleeve, Gastrectomy.