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The absent frontal sinus is an imaging finding that may be an incidental finding in normal cases that have a CT skull for any cause other than a scan of paranasal sinuses (e.g., CT brain, orbit, maxillofacial) or CT scan of paranasal sinuses due to a complaint related to it [3]. [...]a CT scan is the best modality to assess paranasal sinuses without the need to expose a patient to an X-ray with low diagnostic value. Availability of data and materials All data and materials in the article are available and original from work files with permission of management of using it for research purposes without disclosure of the patient’s personal data not related to the research filed. Alshaikh, N; Aldhurais, A. Anatomic variations of the nose and paranasal sinuses in Saudi population: computed tomography scan analysis.

Teleradiology systems in Sohag university hospital in general and Radiology Department specifically. Methods Millensys PACS \"work space version 5.0.0.1496\" (Millensys company, Egypt), installed in Radiology Department, Sohag University Hospital to be evaluated regarding the acquired experience & values of its application & use during the duration of the research - 18 Months - , begin on 15 November 2015 to 1 June 2017. Results the total number of cases sent on PACS during the duration of the study was 57453 cases, 89.47% of them were sent from CR, 7.50% CT cases & 3.03% were MRI cases. Some months are showing a drop in number of sent cases on PACS. only 4.9% of sent CT cases and 17% of sent CT cases was reported on our PACS, Only 8 Cases of CT & 0 Cases MRI are verified all over the duration of the study. Representing 0% cases of MRI and 0.01% of cases of CT. the net result economization of PACS for Sohag university hospital during the duration of the study is 1550000 EGP.