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Title: A novel flood source used for the MTF determination in SPECT systems
Authors: Φούντος, Γεώργιος Π.
Ζαγκλής, Α.
Μιχαήλ, Χρήστος Μ.
Καλατζής, Ιωάννης
Σαμαρτζής, Α.
Contributors: Κάβουρας, Διονύσης Α.
Κουνάδη, Ε.
Βαλσαμάκη, Π.
Κανδαράκης, Ιωάννης Σ.
Γεραλή, Σ.
Νικηφορίδης, Γεώργιος Χ.
Item type: Conference publication
Keywords: Film;Ταινία;SPECT;99mTc(III)-DMSA;MTF;LSF;Flood source
Subjects: Science
Issue Date: 30-Jan-2015
Date of availability: 30-Jan-2015
Publisher: Νερατζής, Ηλίας
Σιανούδης, Ιωάννης
Βαλαής, Ιωάννης Γ.
Φούντος, Γεώργιος Π.
Abstract: The Modulation Transfer Function (MTF) is an important parameter for the characterization of the signal transfer properties and image quality of a single photon emission computed tomography (SPECT) system. MTF can be derived by determining the line spread function (LSF) from images of a flood source. The method presented here is novel and easy to implement, requires materials commonly found in clinical practice, is robust to aliasing. Furthermore, since this technique is based on the LSF method, reduces measurement noise levels due to greater data averaging than conventional Point Spread Function (PSF)-integration techniques. In an effort to prepare easily, cheaply and reproducibly a Tc-99m-based flood source (Eγ=140 keV), various combinations of films and radiopharmaceuticals were tried. Excellent results were obtained by immersing an Agfa MammoRay HDR Medical X-ray film in a solution of dithiothreitol (DTT, 10-3 M)/Tc-99m(III)-DMSA (DMSA:Trivalent Technetium-99m-dimercapto-succinic acid, 40 mCi/40 mL) for 30-45 min in the dark. These films exhibited high integral uniformity (CV <1.9%). All imaging experiments were performed in a Siemens e-Cam γ-camera.
Description: Special issue: Scientific papers presented on the 3nd International Conference on Experiments/Process/System Modeling/Simulation & Optimization in Athens, 8-11 July, 2009. Mini symposium on Medical Imaging, organized by G. Panayiotakis, I. Kandarakis, G. Fountos and I. Valais
Language: English
Citation: Fountos, G.P., Zanglis, A., Michail, C.M., Kalatzis, I., Samartzis, A., et al. (2010). A novel flood source used for the MTF determination in SPECT systems. "e-Journal of Science & Technology". [Online] 5(2): 1-6. Available from:
Journal: e-Περιοδικό Επιστήμης & Τεχνολογίας
e-Journal of Science & Technology
Type of Journal: With a review process (peer review)
Access scheme: Publicly accessible
License: Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες
Appears in Collections:Τόμος 05, τεύχος 2 (2010)

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