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On plain radiography, prevertebral space should be less than 6 mm at C3 vertebral level in children; while in adults, the space should be less than 6 mm at C2 level and less than 22 mm at C6 level. Causes of enlarged prevertebral space could be edema, hematoma, abscess, tumors, and post surgical changes. [5]
Saturn V dynamic test stand, also known as dynamic structural test facility, [4] at the George C. Marshall Space Flight Center in Huntsville, Alabama is the test stand used for testing of the Saturn V rocket and the Space Shuttle prior to the vehicles' first flights.
In addition, indirect signs of injury by the vertebral column are incongruities of the vertebral lines, [11] and/or increased thickness of the prevertebral space: [12] X-ray of normal congruous vertebral lines
The privately funded Polaris Dawn space capsule free flight in August–September 2024 is planned to test a novel contact-lens-type interocular-pressure measuring device that will be worn by all four of the astronauts on the planned 5-day mission—"trying to better understand a recently-detected but major concern of space habitation ...
Military pilots go to a flight surgeon, an armed forces physician qualified to perform such medical evaluations. With the exception of glider pilots, balloon pilots, and sport-pilots, civilian pilots in the United States and most other nations must obtain a flight physical from a civilian physician known as an Aviation Medical Examiner (AME).
The flight test phase can range from the test of a single new system for an existing vehicle to the complete development and certification of a new aircraft, launch vehicle, or reusable spacecraft. Therefore, the duration of a particular flight test program can vary from a few weeks to years.
The danger space or alar space, is a region of the neck. [1] The common name originates from the risk that an infection in this space can spread directly to the thorax , and, due to being a space continuous on the left and right, can furthermore allow infection to spread easily to either side.
The STA's normal flight controls were moved to the right, where the instructor sat. Both seat positions had a head-up display (HUD). In a normal exercise, the pilot descended to 20,000 feet (6,000 m) at an airspeed of 280 knots (519 km/h), 15 miles (24 km) from the landing target.