Is RapidArc more susceptible to delivery uncertainties than dynamic IMRT?
RapidArc deliveries were found to be more tolerant to variations in gantry position and MLC leaf position than SW IMRT. This may be attributed to the fact that the average segmental field size or MLC leaf opening is much larger for RapidArc. Clinically acceptable treatments may be delivered successfully using RapidArc despite large fluctuations in dose rate and gantry position.
For the patients receiving preoperative chronic anticoagulant therapy who underwent colorectal resection, the laparoscopic approach was associated with lower thromboembolic and hemorrhagic complications than open surgery.