Reproducibility of patient positioning in radiation therapy Centro Javeriano de Oncología
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Introduction: Positioning uncertainties are found in patients during treatment of radiotherapy. This study was conducted in order to show the experience in our center.
Methods: 316 patients were analyzed in the period from March 17 to June 18, 2010, which compared the images DRR (Digitally Reconstructed Radiographs) with radiological images either by X-ray film or digital image for performing
corrections in the three axes.
Results: 809 images were recorded in 316 patients, mostly in prostate cancer. En 91% of the images made no corrections required during the treatment,
positioning corrections in all three axes (X, Y, Z) was 3.4 mm, however corrections of 5 mm or more in obesity patients was found.
Conclusion: In this study we found a suitable reproduction for our patients during treatment with uncertainties positioning similar to those reported
in the literature, the greater quantity was founded in patients treated with prostate cancer. Special attention should be paid in obese and very thin
patients who may require improved immobilization technique.
posicionamiento, radioterapia conformal, radiografía digital, inmovilización, cáncer de próstata, positioning, conformal radiotherapy, digital radiography, immobilization, prostate cancer,
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