Fiducial-based quantification of prostate tilt using cone beam computer tomography (CBCT).

Boda-Heggemann, Judit; Köhler, Frederick; Wertz, Hansjörg; Welzel, Grit; Riesenacker, Nadja; Schäfer, Jörg; Lohr, Frank; Wenz, Frederik · Radiother Oncol · 2007

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Abstract

Translation-dependent prostate tilt was quantified with fiducial-based cone beam CT. Moderate anterior displacements (<5mm) of the prostate induce an anterior tilt, while a strong anterior displacement is accompanied by a more complex movement and can result in a backward tilt. Posterior movement resulted in a systematic backward tilt of about 1 degrees /mm.

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