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MRCAT Brain MR-RT clinical application

MRCAT Brain clinical application allows the use of MRI as the primary imaging modality for radiotherapy planning of primary and metastatic tumors in the brain without the need for CT. Detailed anatomical information for contouring and attenuation maps for dose calculations are both obtained from a single, submillimeter resolution 3D T1W mDIXON MR sequence. Artificial Intelligence (AI) is used for fast computation of continuous Hounsfield units directly on the MR console.

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Unleash the real power of MR simulation
Unleash the real power of MR simulation

Unleash the real power of MR simulation

MRCAT Brain lets you plan radiation therapy for patients with primary and metastatic tumors in the brain using MRI as a single-modality solution. Within just one fast MR scan, MRCAT Brain provides excellent soft-tissue contrast for target and OAR delineation, and CT-like density information for dose calculations - directly on the console. This not only extends the benefits of MRI’s outstanding soft-tissue contrast to radiotherapy planning, but it also eliminates arduous, error-prone CT-MRI registration from the process, reducing uncertainties and complexity.
The single scan advantage
The single scan advantage

The single scan advantage

With Philips MRCAT (MR for Calculating ATtenuation) Brain imaging protocol, a single mDIXON T1W scan provides information for both contouring and dose calculation for treatment planning. As anatomical and density information originate from the same scan, no image registration is required and spatial and temporal consistency are ensured.
Short scan time promotes patient comfort and productivity
Short scan time promotes patient comfort and productivity

Short scan time promotes patient comfort and productivity

An MR exam can cause stress for patients. Especially if they are immobilized and in treatment position. The MRCAT source scan is accelerated by Compresses SENSE and takes just a few minutes to complete. This promotes patient comfort by minimizing time in the scanner. Furthermore, it can boost productivity by allowing for additional sequences within the timeslot.
Automatic generation of synthetic CT images using AI
Automatic generation of synthetic CT images using AI

Automatic generation of synthetic CT images using AI

MRCAT Brain uses Artificial Intelligence (AI) for fast computation of MRCAT attenuation maps based on the mDIXON T1W scan. MRCAT generation takes place right on the MR console and provides continuous Hounsfield units for CT-like image appearance.
Accuracy in dose planning
Accuracy in dose planning

Accuracy in dose planning

MRCAT Brain has been designed with the strict accuracy requirements of RT in mind. MRCAT image acquisition is geometrically accurate* and verification studies have shown that MRCAT-based dose plans are equivalent** to CT-based plans, promoting confidence in dose planning.
Seamless workflow integration
Seamless workflow integration

Seamless workflow integration

DICOM-CT conform, the MRCAT Brain dataset can be exported to treatment planning systems and used as the primary image dataset for dose calculations. You can also use the high-resolution MRCAT data for patient positioning at the Linac. Studies have shown that positioning verification is as accurate as with CT-based workflows***.
Put Philips MR-only radiotherapy to work today
Put Philips MR-only radiotherapy to work today

Put Philips MR-only radiotherapy to work today

To successfully bring MR-only radiotherapy into your clinical routine, we recognize that you must look beyond the imaging itself and address important steps such as patient marking, position verification, and quality assurance. We are prepared to support you throughout this process. To this end, we offer dedicated workflow descriptions, best practice sharing and tailored training support, designed to provide assistance as you adopt this new treatment paradigm.
  • *Accurate means: MRCAT image acquisition provides ± 1 mm geometric accuracy of image data in 20 cm Diameter Spherical Volume (DSV) and ± 2 mm geometric accuracy of image data in 40 cm Diameter Spherical Volume (DSV)*. *Limited to 32 cm in z-direction in more than 95% of the points within the volume
  • **The mean dose in the PTV does not differ more than 1% in MRCAT based plans as compared to CT based plans for 95% of the patient cases
  • ***Accurate means: MRCAT-based DRRs are within 1 mm accuracy compared to CT-based DRRs for 95% of cases
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