pencil beam


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Related to pencil beam: Pencil Beam Antenna

pencil beam

A searchlight beam reduced to, or set at, its minimum width.
References in periodicals archive ?
The setup will comprise two gantry treatment rooms and one fixed-beam treatment room, each fitted with advanced pencil beam scanning and cone beam CT technology.
CBCT imaging is an important capability in the treatment room to precisely position patients for pencil beam proton therapy.
MWR-05XP utilizes a single pencil beam that is steered electronically across the face of a planar array, resulting in the ability to rapidly steer the beam across either a sector volume (less than 360[degrees]) or a full volume.
Two different geometries were employed: in one a monoenergetic and monodirectional pencil beam of neutrons impinges on a cylindrical Teflon sheet placed above the Ge detector, Fig.
Line scanning is a special mode of pencil beam scanning (PBS), where the beam is delivered continuously with a constant beam current in each energy layer and the intensity modulation is achieved by varying the scan speed within the energy layer.
com)-- The combination of a pencil beam and uniform scanning to increase the precision of radiation and, thereby, reduce damage to nearby healthy tissue is advancing the treatment of cancer at the Provision Center for Proton Therapy, a recipient of the Medical Tourism Cancer Center Leader of the Year Award, the Medical Tourism Association announced today.
The selection of the RayStation treatment planning system will support workflow needs of today and the advanced needs of Pencil Beam Scanning (PBS), also known as Intensity Modulated Proton Therapy (IMPT).
To illustrate the performance of the proposed algorithm, MIWO is applied to synthesis of both pencil beam patterns and shaped beam patterns.
The MD Anderson Proton Therapy Center is the pioneer in this technology and also initiated the pencil beam proton therapy, which is also known as scanning beam and intensity modulated proton therapy.
The ChipIR team, led by ISIS project scientist Dr Chris Frost, has found ways to trace a pencil beam of neutrons over a chip, or flood a rack of electronics with neutrons, enabling them to pinpoint vulnerable areas or testing whole systems in operational conditions.
A horizontal slit forms a fan beam that is itself further vignetted by a mechanical chopper wheel, producing a pencil beam that would appear to be swept laterally at a speed determined by the wheel rotational velocity.
Therefore, the traditional pencil beam tunnel covers smaller area than that of the sheet beam, so that the relatively strong electric field beyond the beam channel could not be fully utilized in the beam-wave interaction, and the improvement of the output power is thereby limited.