Conditioning data for calculation of the modulation transfer function

• Published in: Medical physics (Lancaster) Vol. 30; no. 2; pp. 248 - 253
• Main Authors: Maidment, Andrew D. A., Albert, Michael
• Format: Journal Article
• Language: English
• Published: United States American Association of Physicists in Medicine 01-02-2003
• Subjects: Algorithms; biomedical equipment; Computer Simulation; computerised tomography; data conditioning; diagnostic radiography; ESF; Fourier Analysis; Fourier transforms; Gaussian noise; Image Enhancement - methods; mammography; Mammography - methods; minimisation; Modulation and optical transfer functions; Modulation transfer functions; monotonic; MTF; Non‐ionizing radiation equipment and techniques; optical transfer function; Physicists; quadratic optimization; Quality Control; Radiographic Image Enhancement - methods; Sample Size; Signal Processing, Computer-Assisted; X‐ and γ‐ray sources, mirrors, gratings, and detectors; X‐ray detection; X‐ray imaging; ESF; monotonic; data conditioning; quadratic optimization; MTF
• ISSN: 0094-2405; 2473-4209
• DOI: 10.1118/1.1534111

A method for conditioning data used in the measurement of the modulation transfer function (MTF) is discussed. This method is based upon imposing the constraint that the edge spread function (ESF) is monotonic. The advantages of this technique, when applicable, are demonstrated with simulated examples for which the true MTF is known. The application of this technique in the measurement of the MTF of a digital detector in clinical use is also demonstrated.