Direct sagittal and coronal CT scanning—an economical light beam source for patient positioning

1983 ◽  
Vol 56 (672) ◽  
pp. 979-979
Author(s):  
Keith R. Jones
Keyword(s):  
Light Beam ◽  
Patient Positioning ◽  
Ct Scanning ◽  
Beam Source

scholarly journals Robotic Systems in Radiotherapy and Radiosurgery

2022 ◽  
Author(s):  
Stefan Gerlach ◽  
Alexander Schlaefer
Keyword(s):  
Medical Devices ◽  
Patient Positioning ◽  
Target Motion ◽  
Robotic Systems ◽  
Beam Source ◽  
Target Region ◽  
Safe Delivery ◽  
Research Context ◽  
Research Systems ◽  
High Doses

Abstract Purpose of Review This review provides an overview of robotic systems in radiotherapy and radiosurgery, with a focus on medical devices and recently proposed research systems. We summarize the key motivation for using robotic systems and illustrate the potential advantages. Recent Findings. Robotic systems have been proposed for a variety of tasks in radiotherapy, including the positioning of beam source, patients, and imaging devices. A number of systems are cleared for use in patients, and some are widely used, particularly for beam and patient positioning. Summary The need for precise and safe delivery of focused high doses to the target region motivates the use of robots in radiotherapy. Flexibility in the arrangement of beams and the ability to compensate for target motion are key advantages of robotic systems. While robotic patient couches are widely used and robotic beam positioning is well established, brachytherapy robots are mostly considered in a research context.

Head Tip, Cue to Object Elevation and Location: Implications for the Blind

1980 ◽  
Vol 50 (1) ◽  
pp. 263-268
Author(s):  
Willard R. Thurlow
Keyword(s):  
Light Beam ◽  
Linear Array ◽  
Blind Person ◽  
Horizontal Scale ◽  
Beam Source ◽  
Array Of Photosensitive Elements

Sighted subjects can accurately direct a light-beam source mounted on their head to the position of their hand on a vertical or horizontal scale by tipping their head in the up-down dimension. A blind person might be trained to utilize head-tip cues for location or objects in space. If he scanned his environment vertically (by tipping his head) with a horizontal linear array of photosensitive elements, presence of an object at a given position and elevation could be signalled to him by a small light attached to the object.

Multifunctional light beam source for surface slope measuring long trace profilers

2020 ◽  
Author(s):  
Valeriy V. Yashchuk ◽  
Ian Lacey ◽  
Kevan Anderson ◽  
Jeff M. Dickert ◽  
Brian V. Smith ◽  
...  
Keyword(s):  
Light Beam ◽  
Surface Slope ◽  
Beam Source

Reliability of left and right indicators in CT scanning of the head

1987 ◽  
Vol 67 (2) ◽  
pp. 291-292 ◽  
Author(s):  
Alfred J. Luessenhop ◽  
Dieter Schellinger
Keyword(s):  
Ct Scan ◽  
Computerized Tomography ◽  
Patient Positioning ◽  
Ct Scanning ◽  
Ct Scanner ◽  
Content Type ◽  
Normal Side ◽  
Present Generation ◽  
Left And Right ◽  
Fine Print

✓ A case is described in which incorrect preliminary programming of a computerized tomography (CT) machine caused transposition of the left- and right-side indicators in a CT scan, which led to craniotomy on the normal side. The possible mechanism for this is incorrect pre-scan programming of the CT scanner with respect to patient positioning in the scanner gantry. This error, although unlikely, is still possible with the present generation of CT scanners.

1522: Utility of Preoperative 3-D Reconstruction of Pelvic Vasculature using Multi-Detector Spiral CT Scanning in Treatment Planning for Robotic Prostatectomy

2005 ◽  
Vol 173 (4S) ◽  
pp. 412-412
Author(s):  
Ashutosh Tewari ◽  
Assaad El-Hakim ◽  
Peter N. Schlegel ◽  
Mani Menon ◽  
Deirdre M. Coll
Keyword(s):  
Treatment Planning ◽  
Ct Scanning ◽  
Spiral Ct ◽  
Robotic Prostatectomy

CT Scanning Interferes With Pacemakers, Other Devices

2008 ◽  
Vol 38 (16) ◽  
pp. 5
Author(s):  
ELIZABETH MECHCATIE
Keyword(s):  
Ct Scanning

DUAL LIGHT BEAM MODULATION OF PHOTOCARRIER LIFETIME IN INTRINSIC a-Si:H

1981 ◽  
Vol 42 (C4) ◽  
pp. C4-597-C4-600 ◽  
Author(s):  
P. D. Persans ◽  
H. Fritzsche
Keyword(s):  
Light Beam ◽  
Beam Modulation

ELECTRON BEAM SOURCE MOLECULAR BEAM EPITAXY OF AlxGa1-xAs GRADED BAND GAP DEVICE STRUCTURES

1988 ◽  
Vol 49 (C4) ◽  
pp. C4-607-C4-614
Author(s):  
R. J. MALIK ◽  
A. F.J. LEVI ◽  
B. F. LEVINE ◽  
R. C. MILLER ◽  
D. V. LANG ◽  
...  
Keyword(s):  
Electron Beam ◽  
Molecular Beam Epitaxy ◽  
Band Gap ◽  
Molecular Beam ◽  
Beam Source ◽  
Device Structures ◽  
Graded Band Gap

99mTc Technetium Sulfide and the Scintillation Camera in the Rapid Diagnosis of Pericardial Effusion

1971 ◽  
Vol 10 (02) ◽  
pp. 122-128
Author(s):  
W. H. Blahd ◽  
M. A. Winston ◽  
G. T. Krishnamurthy ◽  
P. B. Thomas ◽  
E. Weiss
Keyword(s):  
Pericardial Effusion ◽  
Patient Positioning ◽  
Rapid Diagnosis ◽  
Scintillation Camera ◽  
Technical Error ◽  
Technetium 99M ◽  
Sodium Pertechnetate ◽  
Specific Uptake ◽  
Speed Accuracy

SummaryBecause of its speed, accuracy, and reproducibility, radioisotopic angiocardiography appears to be the method of choice for the diagnosis of pericardial effusion. Technetium-99m sulfide is preferable to 99mTc sodium pertechnetate in these studies for the following reasons: (1) its specific uptake by the liver aids both in patient positioning and in the accuracy of diagnosis; and (2), studies can be repeated within 15—20 minutes should there be equiment or technical error.

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