This page was reviewed under ourmedical and editorial policyby
毛里·马克曼（Maurie Markman），医学博士，CTCA医学与科学总裁。
This page was updated on April 14, 2022.
疗法®is a form of image-guided放射治疗that combines a form of强度调制辐射疗法（IMRT）, with the accuracy of计算机断层扫描（CT）scanning technology, in one machine. The combination of these technologies allows doctors to adjust the radiation beam to better match the location, size and shape of the tumor. This radiation therapy delivery system is designed to allow doctors to target tumors more precisely while sparing surrounding tissue and nearby organs.
疗法may be an option to treat multiple cancers in various stages. Cancers treated with TomoTherapy include:
它也可以用来治疗其他技术可能难以达到的转移性癌症和肿瘤。
Because it’s designed to allow doctors to sculpt the radiation treatment more accurately to the size, shape and location of the tumor, TomoTherapy offers several advantages. Among them:
Some cancer patients who have reached their maximum tolerance dose of traditional radiation may be a candidate for TomoTherapy radiation.
Undergoing TomoTherapy treatment may seem similar to having a CT scan or anX射线.
When it’s time for the treatment, a radiation therapist helps the patient into position on the table. In most cases, the patient will be face up. The patient’s position may change from session to session, depending on the shape and location of the tumor. The therapist typically places a device or devices to keep the patient still during the procedure.
Before the radiation treatment begins, the patient moves through the machine while a clinician uses scanning technology to capture a 3D image of the treatment area. This allows the radiation oncologist and radiation therapist to shape the beams according to the size, shape and location of the tumor(s) on that specific day.
During treatment, the patient moves through the machine slowly as radiation is applied from 360 degrees. The patient may hear clicking, humming or other noises from the machine.
该过程可能需要15分钟，并且无痛。
Like other radiation therapy technologies, TomoTherapy may cause short-term side effects.
Some side effects may depend on the area of the body being treated. For instance, if radiation treatment was delivered to the head, side effects may include headaches, mouth sores, difficulty eating and dry eyes.
General side effects of TomoTherapy may include:
疗法后不久，Tomotherapy的大多数副作用都消失了。其他人可能会在治疗后徘徊，但往往会在几个月内消失。
As with many cancer treatments, TomoTherapy may have some long-term side effects, such as skin changes or a slight risk of developing a second cancer.
Your care team at Cancer Treatment Centers of America® (CTCA) will share information on potential short-term or long-term side effects of your treatment. They also may recommend supportive care services designed to help address side effects of your treatment, including: