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| QSPECT - Quantitative SPECT reconstruction Absolute quantification of activity concentrations (Bq/ml) can establish direct comparability of parametric images between systems, points in time, or different subjects. Using camera-specific calibration factors, along with standardized attenuation and scatter correction, the QSPECT suiteTM, enables absolute quantification of SPECT data obtained on any conventional SPECT or SPECT/CT system. The quantitative comparison of image data between sites (multi-centre setting), intra-individually (follow-up), or against reference data is facilitated. QSPECT was developed by Prof. Hidehiro Iida at the NCVC, Osaka, Japan. |
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QSPECT-Folder Download Technical requirements Application examples: Quantitative Myocardial Blood Flow measurements Quantitative Cerebral Blood Flow measurements measurements Inter-institutional reproducibility measurements Receptor imaging measurements |
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| The QSPECT suiteTM The QSPECT suiteTM consists of a core module for quantitative reconstruction, specialized modules for summary report, and a regions-of-interest analysis tool. One or two sets of single- or dynamic-frame images can be reconstructed, in which the two images may be co-registered, enabling two independent scans being combined in a single analysis. The quantitative accuracy and inter-equipment reproducibility have been demonstrated in previous studies. Several phantoms including a 3-dimensional brain phantom with a realistic head contour and precise grey matter and skull-equivalent structures are available. Experience in more than 186 clinical institutions on more than 60000 clinical scans is a strong support for real quantitative studies using existing SPECT cameras installed at clinical environment.  |
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