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(Radiographics. 1999;19:1177.)
© RSNA, 1999

Letters to the Editor

Systematic Errors

William D. Stiehm, MD

Boulder Locums Radiology, PC, 3810 Spring Valley Rd, Boulder, CO 80304

In the article by Rzeszotarski on counting statistics in the May-June 1999 issue of RadioGraphics (1), the author states that an elongated ruler will give consistent but long measurements. Actually, the opposite is true: An elongated ruler will give a short measurement.

References

  1. Rzeszotarski M. Counting statistics. RadioGraphics 1999; 19:765-782.[Abstract/Free Full Text]

Dr Rzeszotarski responds:

Mark Rzeszotarski, PhD

Department of Radiology, MetroHealth Medical Center, 2500 MetroHealth Dr, Cleveland, OH 44109-1998

I thank Dr Stiehm for identifying the mistake in my discussion of systematic errors in the article on counting statistics. Was this a blunder or a systematic error on my part?





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