Key technical features of current preclinical or commercial hybrid MR-guided radiotherapy systems
| Hybrid MR–RT system . | MRI . | Treatment unit . | Magnetic field orientation relative to incident radiation . | Development status . |
|---|---|---|---|---|
| Viewray MRIdian System109,110 | 70 cm bore, 0.35 T split superconducting magnet | Robotic 3-headed 60Co system each equipped with 30 leaf pairs of doubly focused multileaf collimators providing a combined dose rate of 550 cGy/ min at isocenter | Perpendicular | Commercial; linac-based MR-radiotherapy system European regulatory approved, pending US approval |
| Elekta MR-linac104–107 | 70 cm bore 1.5 T Philips MRI with active magnetic shielding | 7-megavolt linac (intensity-modulated RT) | Perpendicular | Preclinical; installation in progress within Atlantic Consortium108 |
| Rotating biplanar linac–MRI system115,116 | 60 cm open bore 0.6 T superconducting whole-body magnet | 6-megavolt linac | Parallel | Research; commercialization in progress (MagnetTx) |
| Hybrid MR–RT system . | MRI . | Treatment unit . | Magnetic field orientation relative to incident radiation . | Development status . |
|---|---|---|---|---|
| Viewray MRIdian System109,110 | 70 cm bore, 0.35 T split superconducting magnet | Robotic 3-headed 60Co system each equipped with 30 leaf pairs of doubly focused multileaf collimators providing a combined dose rate of 550 cGy/ min at isocenter | Perpendicular | Commercial; linac-based MR-radiotherapy system European regulatory approved, pending US approval |
| Elekta MR-linac104–107 | 70 cm bore 1.5 T Philips MRI with active magnetic shielding | 7-megavolt linac (intensity-modulated RT) | Perpendicular | Preclinical; installation in progress within Atlantic Consortium108 |
| Rotating biplanar linac–MRI system115,116 | 60 cm open bore 0.6 T superconducting whole-body magnet | 6-megavolt linac | Parallel | Research; commercialization in progress (MagnetTx) |
Key technical features of current preclinical or commercial hybrid MR-guided radiotherapy systems
| Hybrid MR–RT system . | MRI . | Treatment unit . | Magnetic field orientation relative to incident radiation . | Development status . |
|---|---|---|---|---|
| Viewray MRIdian System109,110 | 70 cm bore, 0.35 T split superconducting magnet | Robotic 3-headed 60Co system each equipped with 30 leaf pairs of doubly focused multileaf collimators providing a combined dose rate of 550 cGy/ min at isocenter | Perpendicular | Commercial; linac-based MR-radiotherapy system European regulatory approved, pending US approval |
| Elekta MR-linac104–107 | 70 cm bore 1.5 T Philips MRI with active magnetic shielding | 7-megavolt linac (intensity-modulated RT) | Perpendicular | Preclinical; installation in progress within Atlantic Consortium108 |
| Rotating biplanar linac–MRI system115,116 | 60 cm open bore 0.6 T superconducting whole-body magnet | 6-megavolt linac | Parallel | Research; commercialization in progress (MagnetTx) |
| Hybrid MR–RT system . | MRI . | Treatment unit . | Magnetic field orientation relative to incident radiation . | Development status . |
|---|---|---|---|---|
| Viewray MRIdian System109,110 | 70 cm bore, 0.35 T split superconducting magnet | Robotic 3-headed 60Co system each equipped with 30 leaf pairs of doubly focused multileaf collimators providing a combined dose rate of 550 cGy/ min at isocenter | Perpendicular | Commercial; linac-based MR-radiotherapy system European regulatory approved, pending US approval |
| Elekta MR-linac104–107 | 70 cm bore 1.5 T Philips MRI with active magnetic shielding | 7-megavolt linac (intensity-modulated RT) | Perpendicular | Preclinical; installation in progress within Atlantic Consortium108 |
| Rotating biplanar linac–MRI system115,116 | 60 cm open bore 0.6 T superconducting whole-body magnet | 6-megavolt linac | Parallel | Research; commercialization in progress (MagnetTx) |
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