Document Detail

Laser modification to an x-ray collimator: an aid in positioning patients for neurosurgical and radiographic procedures.
MedLine Citation:
PMID:  1186621     Owner:  NLM     Status:  MEDLINE    
In high-ambient-light levels such as are found in operating rooms, and at long target-to-patient distances, the cross lines and light field projected from conventional x-ray collimators are not easily visible and proper patient positioning is difficult. The collimators on two mutually perpendicular x-ray units have been modified by replacing the incandescent bulbs with lasers and adjusting the lasers to be coaxial with the x-ray beams. These modifications have been coupled with a third wall-mounted laser to facilitate patient positioning for stereotaxic thermal hypophysectomy. The use of the laser-modified collimators has resulted in considerable saving of time for the operating team and has markedly reduced patient anesthesia time. The laser-modified collimator has also been found useful in positioning patients for other radiographic procedures in the operating room and has virtually eliminated retakes due to malpositioning.
B M Galkin; H B Vogel; G H McArdle; G F Baust; R Boon; V O'Donnel
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Medical physics     Volume:  2     ISSN:  0094-2405     ISO Abbreviation:  Med Phys     Publication Date:    1975 Mar-Apr
Date Detail:
Created Date:  1976-01-30     Completed Date:  1976-01-30     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0425746     Medline TA:  Med Phys     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  79-81     Citation Subset:  IM    
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Hypophysectomy / instrumentation*
Radiography / instrumentation*,  methods

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Loss of field flatness in AECL teletherapy units form misadjustment of the collimator.
Next Document:  Saturation curve in gases of high atomic number at pressures up to 8 atm. I. Krypton and xenon.