Introduction Bifid rib as pathoanatomical findings on chest X-ray is a skeletal disorder. It is usually unilateral and commonly found in males. Bifid ribs commonly happen in absence of structural defects of the vertebrae. Presentation of case The case of this report is a 65-year-old with severe infection of Covid 19. He was admitted to the ICU. Imaging findings indicate existence of a bifid rib with vertebral fusion. Discussion Bifurcated ribs usually have been described without vertebral defects. In our case, there is a bifurcated rib with fused vertebrae. These defects are also defined in the criteria of Gorlin syndrome. Conclusion Unlike other rib abnormalities, the bifid rib occurs mainly in the absence of a vertebral defect, but this study reports a bifid rib with vertebral defects.

Abstract. Rice is one of the main crops that plays an important role in world food security. Due to the suitable climate in the north of Iran, rice is the dominant crop of farmers in this region. In this study, rice paddies were identified and separated by using the relationship between NDVI and LSWI2105 from the OLI sensor in the year 2014. To identify suitable fields, an algorithm was presented to identify the paddy fields of waterlogged soils during the stages of transplanting. According to the climate of the region, the factors of evergreen covers, water bodies, and altitude classes were identified. Finally, a spatial distribution map of rice paddies was created. 56 control points were used in rice and non-rice fields to evaluate the work. The results showed that the spatial distribution map of rice paddy fields for Amol city has an overall accuracy of 83.6364% and a kappa coefficient of 0.8108.