MAGNETOM RT Pro edition
MRI offers excellent soft-tissue contrast without dose, making it ideal for RT purposes where computed tomography (CT) information can be enriched with valuable MR information. Check out the examples below to see how the MAGNETOM RT Pro edition helps you expand your clinical capabilities in radiation therapy.
Brain and Head & Neck
Whether for brain lesions or intracranial metastases, MRI helps to provide vital clues for treatment planning of IMRT and Stereotactic Radiosurgery. Siemens provides dedicated RT protocols for Brain as well as Head & Neck exams with the RT Dot Engine. These protocols are optimized for imaging in treatment position with the flexible Tim 4G coils.
In radiation therapy of the prostate, the volume of the organ is often overestimated when using CT only.1 With its excellent soft-tissue contrast, MRI can enable a more precise delineation of the prostate and organs at risk. With multi-parametric MRI (diffusion-weighted imaging and Spectroscopy) you can even see metabolically active regions of a tumor which helps to identify regions for dose escalation and enable tailored treatment planning to drive better therapeutic outcomes.2
With RESOLVE, diffusion-weighted imaging can be performed with significantly better lesion conspicuity and image quality3 and typical distortions are reduced by a factor of three.4 Therefore, it is the DWI sequence of choice for accurate target delineation.5
For cervical cancers treated with brachytherapy, the EMBRACE study has shown that the ability of MRI to visualize and delineate soft tissue improves target coverage and normal tissue sparing.6 With fast isotropic 3D sequences – like SPACE or VIBE – along with 3D distortion correction, you can acquire excellent planning data for the therapy process. Various contrasts for reliable 3D planning in brachytherapy, e.g. T1, T2, and PD are available.
1Van Lin et al. IJROBP 2006;65:291–303
2Kuban et al. IJROBP 2011;79:1310-1317
3Thian et al. Academic Radiology, 2014:21(4)
4Foltz, et al. IJRO 2013
5Liney et al. MAGNETOM Flash 2014:59-13-17
6Pötter R., Radiother Oncol. 2011; 100(1): 116–123