Journal of Medical Physics
 Home | Search | Ahead of print | Current Issue | Archives | Instructions | Subscription | Login  The official journal of AMPI, IOMP and AFOMP      
 Users online: 299  Home  EMail this page Print this page Decrease font size Default font size Increase font size 
Year : 1997  |  Volume : 22  |  Issue : 4  |  Page : 165-168

Depth Dose Study Of A High Activity Ir-192 Source Using Computer Controlled 3-Dimensional Data Acquisition System



Correspondence Address:
RM Nehru


Login to access the Email id

Source of Support: None, Conflict of Interest: None


Rights and PermissionsRights and Permissions

The aim of the present study was to carry out the physical measurements such as depth dose around a high activity lr-192 source and derive the radial dose factors and compare with the published data. A commercial computer controlled 3-D water phantom system (WPS) was used with an ion chamber of 0.125 cc (PTW, Freiburg, Germany). The chamber was 1 cm long and 0.55 cm diameter and enclosed in a 100 cm long rubber tube. The chamber was connected to an electrometer and operated at a voltage of 300 V. The ionization measurements were made along the perpendicular bisector of the source at a regular interval. Depth dose curve was obtained and radial dose factors were derived. This study improves our confidence in measurement using 3-dimensional WPS and the small size detectors coupled with the electrometer. The present radial dose factors, g(r) values, may be used in clinical situations where secondary dose at other parts of the body located at larger distances are warranted.


[PDF]*
Print this article     Email this article
 Next article
 Previous article
 Table of Contents

 Similar in PUBMED
   Search Pubmed for
   Search in Google Scholar for
 Citation Manager
 Access Statistics
 Reader Comments
 Email Alert *
 Add to My List *
 * Requires registration (Free)
 

 Article Access Statistics
    Viewed506    
    Printed38    
    Emailed0    
    PDF Downloaded67    
    Comments [Add]    

Recommend this journal