1,5 Tesla MR-Linac

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General Information

With MR-Linac Unity technology, your doctor can "see" the tumor tissue more clearly and adjust the radiation dose during treatment according to the daily changes of your organs. While the required dose is applied to the existing tumor, it ensures that the treatment is more effective than ever, as it can safely deliver radiation without damaging the surrounding tissues. This treatment, which protects normal tissues better, reduces the number of sessions and creates a comfort zone for the patient.
 
Personalized Treatment: MR-Linac Unity Can Be Used For Patients Who Can Enter a 1.5 Tesla MR Device and Need Radiotherapy

With its fine-detail imaging capabilities, MR-Linac Unity provides a clear image that separates tumor tissue from normal tissue for radiation therapy planning and treatment administration. In addition, it allows excellent soft tissue visualization in tumors located in the brain, neck and abdomen, while tracking the tumor and normal tissues with precision throughout the treatment with its real-time imaging features.

MR-Linac Unity allows doctors to see a tumor clearly and to plan a precise treatment based on the current condition of the tumor.

Current technology provides previously hard-to-get real-time information with tumor location, organ function, and therapeutic targeting, allowing doctors to more conveniently monitor a tumor while treating a patient.


Treatment Response Assessment

Especially; The response of the tumor to radiotherapy can be predicted by evaluating the dynamic changes that occur in the tumor during radiotherapy in rectum, liver, head and neck and brain tumors. (The only MR-linac approved by the FDA in this regard is Unity)
 
This predictability provides data on the direction of treatment in all tumor types and especially after radiotherapy in brain tumors.
 

Areas where MR-Linac Unity is Effective

65% of all cancers occur in the lung, prostate, colorectum, stomach, liver, breast and cervix. And 6/7 of these cancer types have soft tissue anatomy that is difficult to visualize.
 
Radiotherapy treatments are a process that requires cooperation with Medical Oncology Physicians, and this treatment is very valuable for metastatic cancer types. MR Linac Unity technology primarily; It is effective in the following types of tumors, including lung, prostate, intra-abdominal tumors, liver tumors and metastases, pancreatic cancers.

Frequently Asked Questions

MR-Linak, which is used in cancer treatment, is a smart radiotherapy method that can take fast and sharp images and can detect motion. It consists of a 1.5 Tesla magnetic resonance imaging device (MR) and a linear accelerator (Linak) in a single device.

Generally, in radiotherapy, the dose is administered with the sum of lower daily amounts. The number of treatment days, which can last up to 30 sessions in classical linacs, can be reduced in suitable patients in treatment with MR-Linak. According to criteria such as the patient's condition, tumor size, structure, mobility and proximity to sensitive organs, treatment can be applied to the patient at specified intervals. In the treatment, which generally lasts 3 or 5 sessions, the device monitors all the changes in the patient and offers treatment according to new situations. One session varies between 20-50 minutes, depending on the condition of the patient and the tumor.

Radiation Oncology Clinic, in cooperation with all other disciplines dealing with oncology, uses the high-tech MR-Linak in the following tumor types.

• Brain tumors
• Head and neck cancers
• Pancreatic cancer
• Colorectal cancer
• Pelvic tumors
• Cervical cancer
• Intrauterine cancer
• Liver – biliary tract tumors and metastases
• Adrenal gland cancer and metastases
• Kidney tumors
•    Lung cancer
•    Gastric cancer
• Esophageal-esophageal tumors
•    Prostate cancer
• Breast cancer
• Soft tissue sarcoma
• Vaginal cancer
• Bladder cancer
• Abdominal masses
 

In radiotherapy, it is aimed to protect the normal tissues and organs around the tumor while the tumor is destroyed by applying a high dose of radiation to the tumor. High treatment efficacy and fewer side effects are expected. The effectiveness of the treatment is determined by imaging the tumor with computed tomography before and after the treatment. However, it can be difficult to view the tissues and soft tissues in the abdomen, especially with tomography. With MRI, these tissues can be imaged with high resolution. MR-Linak provides treatment by imaging the tumor area and normal tissues more clearly. Before and during the treatment, the tumor and surrounding normal tissues are followed. Radiation doses suitable for the current position of the tumor and its surroundings are calculated and applied to the patient correctly (online adaptive 4-dimensional therapy).

With 1.5 Tesla MR-Linak Unity technology, the doctor can see the tumor tissue more clearly and adjusts the treatment radiation dose according to the daily changes of your organs. While applying the required dose to the existing tumor, the effectiveness of the treatment increases as it can safely deliver radiation to the surrounding tissues. This treatment, which protects normal tissues better, reduces the number of sessions and creates a comfort zone for the patient.

First, the patient's tomography and MRI are taken on the treatment device, and a treatment plan is made for the patient. After the patient lies on the device, the location of tumor and normal tissues is determined during the MRI. The daily dose distribution is recalculated according to the current position. It detects not only predictable movements of tumor and normal tissues such as breathing, but also unpredictable movements such as bowel movements. When the treatment does not progress as planned because it is controlled by continuous MRI, a new treatment is planned.

For successful treatment and pinpointing in MR-Linak, the target tissue must be visualized very clearly. MRI is performed for this imaging. Sound attenuating headphones are used to prevent patients from being disturbed by the MR sound. Patients who wish can listen to the music they brought with them during these experiences.

It is the treatment performed by directing the entire treatment in accordance with the target. Thanks to MR images, accuracy during point shooting is at the highest level. In tumors close to healthy tissues, their clear observation allows for the best preservation of these tissues. During this application, which is one of the most effective radiotherapy methods, even if the location of the tumor changes when the patient breathes, the beams given to the tumor make a clear focus and ensure the destruction of the tumor with a full hit. Again, "Dynamic MR Changes" that occur in the tumor of the patient whose radiotherapy continues, provides an idea about the response of the tumor to treatment.

All these processes and stages are performed while the patients are lying on the device and ready for treatment. The soft stretcher increases the comfort of the patient. The short and wide shooting space of the device reduces patient anxiety and fear. Technology that reduces acoustic noise is used. However, sound attenuating headphones are available for patients who are bothered by sound.

MR-Linak Unity can be used in patients who can enter a 1.5 Tesla MR device and need radiotherapy. With its fine-detail imaging capabilities, MR-Linak Unity provides a clear image that separates tumor tissue from normal tissue for radiation therapy planning and treatment administration. In addition, it allows excellent soft tissue visualization in tumors located in the brain, neck and abdomen, while tracking the tumor and normal tissues with precision throughout the treatment with its real-time imaging features.

• Tumor and normal tissues look better. Not only predictable movements of tumor and normal tissues such as breathing are detected, but also unpredictable movements such as bowel movements.
• Daily Adaptive (Adaptive) treatment is paved with the treatment plan made from the beginning according to the current position of the tumor and normal tissues that is redefined every treatment day.
• During the implementation of the adaptive treatment, which is calculated according to the positions on each treatment day, the patient's position is constantly checked with MR images obtained simultaneously (Position control during treatment).
• “Dynamic MR Changes” in the tumor of the patient whose radiotherapy is still continuing, allows us to have an idea about the response of the tumor to the treatment (The only FDA-approved MR-Linak UNITY in this regard)

First of all, sharper and clearer imaging is possible. You can apply very high doses of radiation to tumor tissue. Surrounding normal tissues and organs can be better protected. The treatment time is also shortened. While the tumor tissue is affected in a short time, a very rapid response to treatment can be obtained. Radiation can be given to recurrent tumors.

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