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Fig. 13 | EJNMMI Physics

Fig. 13

From: Comprehensive SPECT/CT system characterization and calibration for 177Lu quantitative SPECT (QSPECT) with dead-time correction

Fig. 13

Accuracy of recovered activity (calculated with phantom-specific calibration factor and dead-time constant) from dead-time-corrected planar and SPECT images using 3 different energy window widths for wide-spectrum count rate monitoring: 18–680 keV (a) to 55–250 keV (b), and to 55–229 keV (c). TEW (a and b) or DEW (c) scatter correction was used. The red shaded regions indicate the count ranges where errors were above 10% occurred

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