JNM
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

The Journal of Nuclear Medicine Vol. 12 No. 5 197-203
© 1971 by Society of Nuclear Medicine
This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Wyper, D. J.
Right arrow Articles by Gillespie, F. C.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Wyper, D. J.
Right arrow Articles by Gillespie, F. C.

Quantitative Method of Evaluating Focused Collimators

D. J. Wyper and F. C. Gillespie

Western Regional Hospital Board, Glasgow, Scotland

Correspondence: For reprints contact: D. J. Wyper, Western Regional Hospital Board, Dept. of Clinical Physics and Bioengineering, 11 W. Graham St., Glasgow C4, Scotland, U.K.

ABSTRACT

It is shown that the wavelength at which the modulation transfer function of a focused collimator should be assessed is that at which MTF({lambda})/{lambda} is a maximum. This wavelength is called the comparative optimum response wavelength, and the value of the modulation transfer function at this wavelength is called the index of modulation.

To compare the designs of two collimators with plane sensitivities E1 and E2 and indices of modulation MTF({lambda}1) and MTF({lambda}2), respectively, E1[MTF({lambda}1)]2 should be compared with
Figure 1






HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
JOURNAL OF NUCLEAR MEDICINE TECHNOLOGY THE JOURNAL OF NUCLEAR MEDICINE
Copyright © 1971 by the Society of Nuclear Medicine.