Mihalis Mastoris

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OBJECTIVES To determine Line Spread Functions (LSFs) and Modulation Transfer Functions (MTFs) for a digital system for panoramic radiography: the Dimax I (Planmeca Oy, Helsinki, Finland) based on Charge-Coupled Device (CCD) technology. STUDY DESIGN A test object was specially designed having a gold foil positioned vertically. Images of the gold foil(More)
OBJECTIVES To compare the psychophysical properties of the new Kodak InSight F-speed intraoral dental film with those for the E-speed Ektaspeed Plus film by means of the perceptibility curve (PC) test. METHODS A specially designed test object was used. The test object was made of aluminium and was 10 mm thick. It contained ten holes, contrast details,(More)
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