A New g -Probe for Radioassisted Surgery
C. Baldanza 1 , R. Bazzocchi 3 , A. Bini 3 , D. Bollini 1,2 , W. Dusi 1,4 , M. Grazia 3 , I. Massa 1,2 , C. Moroni*1,2 , G. Pallotti 1,5
1. Istituto Nazionale Fisica Nucleare
-Sezione di Bologna, Bologna (Italy)
2. Università di
Bologna Dipartimento di Fisica, Bologna (Italy)
3. Università di
Bologna, Dipartimento di Scienze Chirurgiche e Anestesiologiche,
Bologna (Italy)
4. Istituto TESRE -
CNR, Bologna (Italy)
5. Università di
Bologna, Dipartimento di Medicina Clinica e Biotecnologia
Applicata, Bologna (Italy)
Manuscript received: December 21, 1998; revised: May 13, and November 9, 1999
Accepted for publication: December 7, 1999
Abstract
The performance of an improved hand-held non-imaging g -probe for radioassisted surgery is presented. The probe, based on a square array of four CdTe room temperature semiconductor detectors, allows one to measure both the total counting rate and its variation across a scanned plane. Due to this characteristic, both the errors in localization of the g -source and the average measuring time are practically halved with respect to those obtained with a conventional single-detector probe.
KEYWORDS: radioassisted surgery, g -ray probes.