helical scanning


Also found in: Medical.

helical scanning

[′hel·ə·kəl ′skan·iŋ]
(communications)
A method of facsimile scanning in which a single-turn helix rotates against a stationary bar to give horizontal movement of an elemental area.
(electronics)
A method of recording on videotape and digital audio tape in which the tracks are recorded diagonally from top to bottom by wrapping the tape around the rotating-head drum in a helical path.
(engineering)
A method of radar scanning in which the antenna beam rotates continuously about the vertical axis while the elevation angle changes slowly from horizontal to vertical, so that a point on the radar beam describes a distorted helix.
References in periodicals archive ?
navigator technology from ZEISS, which enables a tangential approach without a stop & go, as well as circular or helical scanning, also results in added productivity.
Einstein and a team of researchers compared the radiation exposure incurred during a coronary CT angiography procedure using a 64-detector row helical scanning and volume scanning, using a 320-detector row volume CT scanner.
This ultra helical scanning mode produces significantly fewer motion artifacts and provides clinicians with high-quality images for accurate diagnoses.
Previously, he held Senior Physicist positions at GE where he developed algorithms for CT, MRI, SPECT, PET, and ultrasound, including a key invention which enabled helical scanning used in nearly all CT machines today.
160-Detector Row Helical Scanning Helps Improve Workflow and Patient Outcomes Through Rapid, Accurate Routine Body Imaging
Helical scanning techniques provided the breakthrough capabilities to cover more anatomical area and acquire volume data sets through several rotations around the body.
SURE)Cardio Prospective(a) gating software application that combines high-speed helical scanning with gated intermittent exposure to further reduce dose during cardiac examinations.
The GE scanner also features helical scanning which allows veterinarians to acquire increased data, quickly and easily, while the patient makes a single pass through the CT gantry.
Toshiba remains at the forefront of CT innovation, having introduced helical scanning, Continuous Imaging, and 4 channel, 0.
Sony's SVO-1330 recorder utilizes a double azimuth, four-head helical scanning system, provides a S/N ratio of 44dB, and includes an APCII (Adaptive Picture Control II) function to automatically optimize recording and playback performance.
Toshiba pioneered helical scanning, Aspire Continuous Imaging (CI) and CT fluoroscopy, which opened new application areas for CT procedures.