DICOM imaging watermarking for hiding medical reports.

Medical confidentiality is an essential duty in the medical profession. In this paper, we introduce a novel robust blind watermarking method for securing the medical report in a DICOM (Digital Imaging and Communications in Medicine) imaging. The insertion of each bit is done in the subtraction of adjacent DC coefficients of the FFT (fast Fourier transformation) using a key k.

[Treatment specifics for spontaneous pneumothorax in flight personnel].

Spontaneous pneumothorax is one cause of aeronautical unfitness in flight personnel, because of the risk of recurrence in flight, making it an issue of flight safety. Specific treatment is required for fighter pilots, pilots flying single-pilot and pilots in professional training: surgical synthesis via video-thoracoscopy is obligatory from the first episode. Considering the exposure to an accumulation of aeronautical factors that are likely to encourage pneumothorax recurrence in flight, it is apical pleurectomy together with abrasion of the remaining pleura and resection of bullae/blebs that is required for fighter pilots to allow them to recover aeronautical fitness unrestrictedly.

Alterations in muscular performance and orthostatic tolerance during Ramadan.

Background: During Ramadan, physiological changes are expected to result from both long-term dietary restriction and partial sleep loss.

Hypothesis: We speculated that Ramadan fasting has deleterious effects on muscle performances and on orthostatic tolerance.

Methods: There were 11 senior fighter pilots tested on three occasions during the first week of Ramadan (Beg-R), during the fourth week (End-R) and during a control period, 2 mo after Ramadan (C).