Evaluation of compensation filters in pedal radiographs

MB Jennings New York College of Podiatric Medicine, NY 10035, USA.

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RE Cohen New York College of Podiatric Medicine, NY 10035, USA.

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JP Marino New York College of Podiatric Medicine, NY 10035, USA.

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ML Jensis-Carlson New York College of Podiatric Medicine, NY 10035, USA.

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AJ Pollizzi New York College of Podiatric Medicine, NY 10035, USA.

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DM Schwartz New York College of Podiatric Medicine, NY 10035, USA.

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SL Gallentine New York College of Podiatric Medicine, NY 10035, USA.

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Compensation filters allow increased visibility of detail in chest, shoulder, spine, hip, knee, and foot radiographs. This study examines use of an anatomic compensation filter to improve imaging in pedal radiographs. Anteroposterior radiographs were obtained of 25 cadaveric feet at two settings with and without the compensation filter. Densitometer readings were taken at ten forefoot anatomic sites. The compensation filter produced statistically significant reductions in densitometer readings at all anatomic sites and at both radiographic settings. Filtration improved imagery of bony structures, provided excellent soft-tissue visualization, and lowered patient exposure.

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