HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Padikal, T. N. Articles by Kereiakes, J. G. Search for Related Content PubMed PubMed Citation Articles by Padikal, T. N. Articles by Kereiakes, J. G.

Field Flood Uniformity Correction: Benefits or Pitfalls?

University of Cincinnati Medical Center, Cincinnati, Ohio

Correspondence: For reprints contact: Thomas N. Padikal, Dept. of Radiology, George Washington University Medical Center, Washington, DC 20037.

ABSTRACT

Strict quality control of scintillation camera images is increasingly recognized as important in a nuclear medicine laboratory. The field flood uniformity of the camera should be tested daily. A variety of commercially available data systems facilitate the above task. Concomitantly, scintigrams are increasingly being corrected for uniformity. This study points out that for the most common source of nonuniformity, namely, unbalanced photo-multiplier tubes, uniformity correction can occasionally, depending on the scatter fraction, produce clinically significant artifacts. This effect is due to the application of a linear correction factor to a nonlinear phenomenon.

FOOTNOTES

^* Current address: Dept. of Radiological Sciences, Wright State University, Dayton, OH 45431.