spiral scan

spiral scan

spiral scan
A radar scan pattern in which the beam is rotated out from and back to the centerline in a circular motion in the vertical plane. This pattern is applicable to target acquisition radars, providing range, relative azimuth, and elevation data.
References in periodicals archive ?
Siemens' unique Adaptive Dose Shield helps to address the dose issue by dynamically assisting in blocking the unnecessary dose before and after the spiral scan, ensuring that the only dose applied to the patient is dose that is clinically relevant," said Kulin Hemani, vice president, Computed Tomography, Siemens Healthcare.
CARE Dose 4D, Siemens' real-time dose modulation, assists in guaranteeing an unparalleled combination of maximum image quality at minimum dose for every patient in every spiral scan.
And CARE Dose 4D, Siemens' real time dose modulation, guarantees an unparalleled combination of maximum image quality at minimum dose for every patient in every spiral scan.
The parachute rotates the canted submunition, producing a spiral scan of the ground.
The results of the test injection are used to set injection parameters for the main spiral scan.
It reduces CT dose through dynamic collimators and automatically eliminates over-radiation before and after every spiral scan.
Until now, many CT vendors have fallen prey to unnecessary dose both before and at the end of the spiral scan range, which has been a function of spiral multi-slice imaging.
All CT vendors fall prey to unnecessary dose both before and after the spiral scan, which is a function of spiral multislice imaging.
The SOMATOM Plus 4 CT system performs complete 360-degree spiral scans in as little as 750 milliseconds, improving clinical performance by 33 percent over one-second spiral CT scanners.