Dose volume histogram (DVH) is one of the methods for evaluating the feasibility of radiotherapy plans. It is difficult to thoroughly comprehend an evaluation of each plan at a glance and to give a concise presentation of the case at conference. In this study, we provide a useful program that will fulfill such a purpose on a clinical setting. We have revised our protocols of radiotherapy planning, developed the program using Visual Basic 2010, which could facilitate an evaluation of DVH, and used it for checking plans and presentation at case conference. Since our DVH analysis program shows a result of DVH in a simple way, such as "OK (Okay)" or "NG (No good)", we can promptly comprehend the results of each radiotherapy plan at ease. This program easily tells us accordance between plans and protocols. We found this program useful and worth spreading.
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