北州癌症中心 is the first in the region to offer the TrueBeam System: a multi-modality, state of the art linear accelerator offering the widest assortment of individualized therapies.

概述

癌症治疗正在改变. The TrueBeam system from Varian Medical Systems is an advanced radiotherapy technology for treating cancer. Opening up treatment options for people with cancer, it targets tumors with accuracy measured in millimeters. 它的力量和灵活性, physicians can develop treatments that are best suited for patients' individual circumstances.

Many different types of cancers are now being treated using radiotherapy procedures. The TrueBeam system from Varian Medical Systems exp和s radiotherapy treatment options for even the most challenging cases, 比如头颈部的癌症, 肺, 肝, 乳房和腹部. It offers many different types of advanced treatment techniques including stereotactic body radiation therapy (SBRT), 影像引导放射治疗调强放疗(放射) RapidArc®放疗技术 和 封闭的RapidArc.

RapidArc is a form of volumetric modulated arc therapy (VMAT) that de肝s a precisely sculpted 3D dose distribution with a single 360-degree rotation of the linear accelerator gantry. RapidArc involves varying (or modulating) the intensity of the radiation (in this case, 高能x射线). 图像引导提高肿瘤靶向性, 和 放射 shapes the radiation dose so that it conforms closely to the three-dimensional shape of the tumor. This means more dose to the tumor, 和 less to surrounding healthy tissue.

For 肺 和 other tumors subject to respiratory motion, TrueBeam提供门控快速放射治疗, which makes it possible to monitor the patient's breathing 和 compensate for movement of the tumor while the dose is being de肝ed in a continuous rotation of the treatment machine. 封闭的RapidArc radiotherapy makes it possible to monitor patient breathing 和 compensate for tumor motion while quickly de肝ing dose during a continuous rotation around the patient. This development enables the use of RapidArc to target 肺 tumors with greater precision by "gating" the beam (turning it on 和 off) in response to tumor motion. 与门控RapidArc, it is possible to de肝 highly targeted treatments to many types of tumors, 包括正在移动的肺肿瘤, 在更短的时间内完成. 封闭的RapidArc combined with High Intensity Mode de肝y at 2400MU/min can de肝 a full, 20Gy肺SBRT评分7分钟. This efficiency is significant for patients with comprised respiratory function or those who have difficulty maintaining treatment position during conventional radiation treatments.

在成像方面, TrueBeam generates high-quality 3-D cone-beam CT images 60% faster than was possible with earlier generations of Varian imaging technology. Additional functionality makes it possible to create images using 25% less X-ray dose.

TrueBeam was designed with many features that can improve the overall patient experience. With shorter treatment times 和 quieter operation, TrueBeam provides for a more comfortable environment for patients. Enhanced communication technology enables a constant interaction between the patient 和 the therapist who operates the equipment. Three closed-circuit television systems enable the therapist to monitor the patient at all times. Music can be played during treatment, helping to increase patient comfort.

它是如何工作的??

TrueBeam结合了成像, beam de肝y 和 sophisticated motion management to accurately 和 precisely target tumors with speed.

• TrueBeam rotates around the patient to de肝 a prescribed radiation dose from nearly any angle.
• 一种叫做 多叶准直器 是什么塑造了光束. It has 120 computer-controlled "leaves" or "fingers" that create apertures of different shapes 和 sizes. The leaves sculpt the beam to match the 3-D shape of the tumor. These can move 和 change during treatment to target the tumor 和 minimize dose to the surrounding healthy tissue.
• TrueBeam's additional functionality provides for the acquisition of a cone-beam CT, CT的一种形式, using 25% less X-ray dose than compared with earlier Varian image-guided technologies. This means patients can be exposed to less X-rays/radiation.
• Real-time imaging tools allow clinicians to "see" the tumor they are about to treat. This gives them confidence, 和 they can target tumors with accuracy measured in millimeters.
• The system includes a new "gated" option for synchronizing beam de肝y with respiration. This helps maintain accuracy as the system changes its targeting whenever tumor motion is an issue, 例如在肺癌治疗期间.
• TrueBeam can be used for many forms of advanced treatment techniques including stereotactic body radiation therapy (SBRT), 影像引导放射治疗, intensity-modulated radiotherapy (放射) 和 RapidArc® radiotherapy technology.