MRIdian - ViewRay - Acıbadem Healthcare Services
MRIdian – ViewRay

MRIdian – ViewRay

MRIdian by ViewRay is the world’s first radiotherapy device, with an integrated onboard MRI. It allows the treatment of tumors considered untreatable before.

What is MRIdian (ViewRay)?

Until recently, physicians used magnetic resonance imaging (MRI) scans to see tumors and linear accelerators (LINAC) to treat them. MRI Linac is a revolutionary solution that combines both technologies in the same device. MRIdian by ViewRay is the world’s first MRI-Guided Radiation Therapy System that can image and treat cancer patients simultaneously. It is a radiotherapy solution that integrates a Linac with MRI technology in a compact design, together with software to locate, target, and track the position and shape of tumors while radiation is delivered.

How Does MRIdian (ViewRay) Work?

Similar to conventional radiotherapy, the patient is placed on a table. MRI is performed for the targeted tissues. The tumor area and surrounding healthy tissues can be visualized clearly with the aid of MRI. Real-time imaging helps physicians to control the treatment process during irradiation. In case of detecting a clinically important movement of targets or healthy tissues, physicians can adjust the target and re-plan the treatment while the patient is still on the treatment couch. A new MRI scan is performed before each treatment session. It allows a tailored treatment according to the patient’s daily anatomy. 

Patients play an active role in MR-Linac radiotherapy. During treatment, they can monitor the tumor on a screen and adjust their breathing to keep it within the marked frame. When the treatment session is over, the patient can go home straight away.

Differences between MRIdian and Conventional Linac-based Treatments

MRIdian is a new technology for advanced radiotherapy. The new therapeutic method expands the limits of radiation oncology. Due to its ability to see well in soft tissues and monitor the radiation delivery in real time, MRI-guided radiation therapy allows treatment of smaller or hard-to-reach tumors, tumors located close to critical structures, or tumors that move, for example, with breathing.

Compared to conventional radiotherapy, MRIdian offers some advanced features, namely:

  • The integrated MRI system provides continuous imaging in real time;
  • Enables the physicians to see tumors clearly, even in soft tissues;
  • Allows to access hard-to-reach or moving tumors in the chest or abdomen;
  • Tracks the movements of the tumors and healthy tissues during irradiation;
  • Provides real-time, on-table adaptive radiotherapy planning;
  • Provides video recording during the treatment process and allows seeing the progress.
  • Enables the delivery of higher doses and precise irradiation;
  • Allows avoiding invasive and costly markers, tissue expanders.

Advantages of MRIdian (ViewRay)

The MRIdian linac system provides some significant benefits for certain patients:

  • Enhanced real-time tumor visualization;
  • Tighter margins and less radiation to surrounding healthy tissues;
  • Decreased number of treatment sessions;
  • Reduced side effects for the patient;
  • Improved safety and efficacy of radiation therapy;
  • Improved outcomes against hard-to-treat tumors.

Conditions Treatable with MRIdian (ViewRay)

MR-Linac can be used for all tumors throughout the body. However, it provides significant advantages for patients with lung cancer, prostate cancer, abdominal cancers, liver tumors and metastases, and pancreatic cancer in particular. Its range of application includes: Breast, Periaortic lymph nodes, Lung, Kidney, Bladder, Pelvic lymph nodes, Head and Neck area, Bile Duct, Stomach, Cervix, Adrenal Gland, Orbit, Bone, Spleen, GYN Pelvis, Thorax, Aortic Arch, Pancreas, Heart, Prostate, Mesenteric, Abdomen (Soft tissue), Neck lymph nodes, Rectum, Parotid Gland, Pelvis, Spine, Esophagus, Thyroid, Colon, Liver, Extremity, Mediastinal lymph nodes, Pelvis, Soft Tissue Pelvis, Brain, Uterus, Flank, Gall Bladder, Lingual lymph nodes, Nasopharynx, Ovaries, Rib, Thymus.