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Characterization of myocardial perfusion imaging systems - an extension of quality metrics.
Dundara Debeljuh, Dea; Matheoud, Roberta; Zoccarato, Orazio; Pribanic, Ivan; Brambilla, Marco; Jurkovic, Slaven.
Afiliación
  • Dundara Debeljuh D; Medical Physics and Radiation Protection Department, University Hospital Rijeka, Croatia; Radiology Department, General Hospital Pula, Pula, Croatia; Department of Medical Physics and Biophysics, Faculty of Medicine, University of Rijeka, Croatia.
  • Matheoud R; Department of Medical Physics, University Hospital "Maggiore della Carità", Novara, Italy.
  • Zoccarato O; Unit of Nuclear Medicine and Department of Cardiology, S. Maugeri Foundation, IRCCS, Scientific Institute of Veruno, Veruno, NO, Italy.
  • Pribanic I; Medical Physics and Radiation Protection Department, University Hospital Rijeka, Croatia; Department of Medical Physics and Biophysics, Faculty of Medicine, University of Rijeka, Croatia.
  • Brambilla M; Department of Medical Physics, University Hospital "Maggiore della Carità", Novara, Italy.
  • Jurkovic S; Medical Physics and Radiation Protection Department, University Hospital Rijeka, Croatia; Department of Medical Physics and Biophysics, Faculty of Medicine, University of Rijeka, Croatia. Electronic address: slaven.jurkovic@medri.uniri.hr.
Phys Med ; 125: 104510, 2024 Sep.
Article en En | MEDLINE | ID: mdl-39216312
ABSTRACT

PURPOSE:

The aim of this study was to evaluate the performance of myocardial perfusion imaging (MPI) systems in detecting perfusion defects (PDs). The defect perfusion index (DPI) was introduced to extend and further advance the current MPI quality metrics.

METHODS:

An anthropomorphic phantom simulating normal and pathological myocardial perfusion conditions was imaged by various NaI-crystal detector systems with and without corrections for scatter (SC) and attenuation (AC) (Symbia, Symbia + SC, Symbia IQ + SCAC, Symbia IQ), and cadmium-zinc-telluride detector systems without corrections (DSPECT, D530c). The extent of PD and the summed score (SS) were obtained by comparing polar maps with ad hoc normal databases created for each MPI system by using phantom polar maps with normal perfusion. The segmental uptake (SU) and the global uniformity (GU) were evaluated. The DPI was calculated on segments included in the PD to minimize attenuation artifacts outside the PD. The 17 segmental model was used.

RESULTS:

The highest level of uniformity of polar map was obtained for Symbia IQ + SCAC. D530c showed the highest extent of PD and dependence of the extent on the PD position. It showed in general the lowest SU values and the highest GU due to attenuation artifacts. Nevertheless, D530c outperforms other MPI systems in terms of PD detection, showing the highest DPI value. DSPECT system showed the lowest SS value, and DPI values comparable to NaI-crystal detector systems.

CONCLUSION:

The DPI can be evaluated to investigate the intrinsic ability of MPI systems to detect PDs, whatever the quantitative post-processing software used.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Fantasmas de Imagen / Imagen de Perfusión Miocárdica Límite: Humans Idioma: En Revista: Phys Med Asunto de la revista: BIOFISICA / BIOLOGIA / MEDICINA Año: 2024 Tipo del documento: Article País de afiliación: Croacia Pais de publicación: Italia
Texto completo
Añadir a Mi BVS
Imprimir
XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Fantasmas de Imagen / Imagen de Perfusión Miocárdica Límite: Humans Idioma: En Revista: Phys Med Asunto de la revista: BIOFISICA / BIOLOGIA / MEDICINA Año: 2024 Tipo del documento: Article País de afiliación: Croacia Pais de publicación: Italia