Title :
Measurement of the MTF of a Cone-Beam Breast Computed Tomography laboratory scanner
Author :
Mettivier, Giovanni ; Montesi, Maria Cristina ; Lauria, Adele ; Russo, Paolo
Author_Institution :
Dipt. di Sci. Fisiche, Univ. di Napoli Federico II, Naples, Italy
fDate :
Oct. 24 2009-Nov. 1 2009
Abstract :
In the framework of the realization of dedicated Cone-Beam Breast Computed Tomography (CBBCT) apparatus we report the MTF characterization of our prototype having the best performance in terms of detector pixel size and X ray focal spot than any other systems built or under construction. From our measurement we estimated a value of the longitudinal and transverse resolution of 4-5 lp/mm (at 10% MTF). The presence of CT image features has been observed and attributed of specific phase contrast effects.
Keywords :
biological organs; biomedical measurement; computerised tomography; image resolution; medical image processing; optical transfer function; CT; MTF; X ray focal spot; cone-beam breast computed tomography; detector pixel size; longitudinal resolution; modulation transfer function; specific phase contrast effects; transverse resolution; Breast; Computed tomography; Laboratories; Mammography; Prototypes; Spatial resolution; Visualization; X-ray detection; X-ray detectors; X-ray imaging;
Conference_Titel :
Nuclear Science Symposium Conference Record (NSS/MIC), 2009 IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4244-3961-4
Electronic_ISBN :
1095-7863
DOI :
10.1109/NSSMIC.2009.5401555
