Comparison of eye lens dose measurement techniques in imaging and interventions of the lachrymal drainage system

Meric N., Bor D., Ilgit E., Oznur I., Buget N.

PHYSICA MEDICA, vol.14, no.3, pp.95-100, 1998 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 14 Issue: 3
  • Publication Date: 1998
  • Journal Name: PHYSICA MEDICA
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.95-100
  • Keywords: patient dose, radiation, lens, Monte Carlo, rando phantom, DIGITAL SUBTRACTION ANGIOGRAPHY, MONTE-CARLO SIMULATION, DIAGNOSTIC-RADIOLOGY
  • Ankara University Affiliated: No

Abstract

The radiation dose to the eye lens of patients who underwent diagnostic imaging and treatment of lacrimal drainage system (LDS) obstruction under fluoroscopic guidance have been measured with Thermoluminescence Dosimeters (TLD) and found to be below the deterministic levels. A technique was also suggested for the retrospective estimation of the lens doses, and when applied to each individual patient study good correlation was obtained. Knowledge of patient study data such as image acquisition frame numbers and fluoro on time, mean exposure values for these parameters, and the ratio of lens-to air dose derived for a standard adult head is required for this method. Experimental measurements on a Rando Phantom and simulations with Monte Carlo technique were carried out for the determination of this factor.