abstract background: chest wall irradiation for early breast cancer affects forced vital capacity (fvc), forced expiratory volume in the first second of expiration (fev1) and may change peripheral oxygen saturation (spo2). in our institute chest wall is irradiated with a four field technique: two tangential and two oppositional anterior and posterior supraclavicular fields. regional recurrence ...

aims: it was aimed to investigate postoperative conformal radiotherapy planning that provides the best target volume and the least dose for critical organs in cancers of stomach. methods: this study was conducted on the ct simulation images of thirty patients diagnosed with gastric cancer. target volumes and the organs at risk were contoured. ap-pa reciprocal parallel field conventional plan an...