RT Journal Article
SR Electronic
T1 Collimation and surface counting in haematology
JF Journal of Clinical Pathology
JO J Clin Pathol
FD BMJ Publishing Group Ltd and Association of Clinical Pathologists
SP 751
OP 756
DO 10.1136/jcp.27.9.751
VO 27
IS 9
A1 Bowring, C. S.
A1 Glass, H. I.
YR 1974
UL http://jcp.bmj.com/content/27/9/751.abstract
AB The effect on the results obtained in surface counting investigations of using a dual detector counting system and multihole collimators has been investigated. The use of the additional detector results in smoother curves for the uptake of the radionuclide and the use of multihole collimators increases the discrimination of the counting system against the effects of radioactivity outside the region of interest. In a clinical trial to compare multihole collimation with conventional single hole collimation it was found that increased excess counts were obtained over the spleen with the multihole collimators in eight of ten cases.