Abstract
We propose a simplified method for performing an FROC observer study by using regions of interest (ROIs) of CDMAM phantom images as case sample images. This new method would help researchers to plan and perform FROC observer studies in shorter time, with smaller errors and reduced complexity. As examples of experimental procedure, the digital images obtained by a direct-conversion flat-panel detector (FPD) system in three imaging conditions with different levels of patient dose were used to compare the diagnostic accuracies for low-contrast signal detection. There was a high correlation between the average figure of merit (FOM) obtained by our proposed method and inverse image quality figure (inv. IQF) calculated by CDMAM Analyser 1.55 in each dose level (r = 0.98).
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Acknowledgments
The authors are grateful to the staff in the department of Radiology, Shizuoka Cancer Center. This work was supported by JSPS KAKENHI (Grant-in-Aid for Scientific Research) Grant Number 15K09898, and Pfizer Health Research Foundation.
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Tanaka, R., Akita, F., Fukuoka, D., Bamba, Y., Shiraishi, J. (2016). Simplified Method for FROC Observer Study to Evaluate the Diagnostic Accuracy of a Digital Breast Imaging System by Using a CDMAM Phantom. In: Tingberg, A., Lång, K., Timberg, P. (eds) Breast Imaging. IWDM 2016. Lecture Notes in Computer Science(), vol 9699. Springer, Cham. https://doi.org/10.1007/978-3-319-41546-8_11
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DOI: https://doi.org/10.1007/978-3-319-41546-8_11
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