RUBY
The New Modular QA Phantom
SYSTEM QA • LINAC QA • PATIENT QA
- Webinar (German) "RUBY - Das neue modulare QS-Phantom" 17 October 2019
The phantom that fits your changing needs.
Perform integrated tests of the entire treatment chain from imaging to treatment planning and verification with one basic phantom. Add and expand QA capabilities when needed.
As the new modular phantom platform for radiotherapy QA, RUBY comes with a variety of exchangeable, application-specific inserts that satisfy all test requirements in a modern treatment facility.
One Phantom. All Tasks.
With its unique combination of a compact, easy-to-setup base phantom and highly versatile test inserts, RUBY provides you with a simple, yet comprehensive solution that helps you evaluate the entire radiotherapy treatment process.
Its scalable, modular design makes it easy for you to stay flexible and add new inserts any time. Customize Ruby to your specific needs.
Choose your insert and start testing.
RUBY Inserts
System QA
Choose the “End-to-End Test” insert for comprehensive end-to-end testing with one single insert.
Key Features
- MRI visibility in all commonly used sequences (T1, T2 and FLAIR at 1.5 T) – no additional components required
- ICRU-based tissue-equivalent materials (brain, lung, bone) for enhanced CT visibility
- Compatible with patient positioning systems and patient masks
- CT and MRI cavities for accurate verification of the CT/MRI image fusion algorithm of treatment planning systems
- Point dose measurements with different detector types using the same insert
LINAC QA
Perform alignment checks of the entire system, including conventional as well as 6D couches, with the “Alignment/Isocenter Check” insert.
Key Features
- System alignment and isocenter checks with one single insert
- Daily checks of IGRT positioning accuracy as recommended in AAPM TG-179 and TG-142
- Optional tilting base for 6D couch QA
- Tissue-equivalent bone structures for enhanced visibility in kV and MV images
- High-density radiopaque sphere at isocenter for easy Winston-Lutz testing
- Automated analysis of EPID images with optional PTW IsoCheck epid software
- Integrated with Track-it
Patient QA
Select the “Detector” insert for measurement-based dose verification of patient treatment plans.
Key Features
- Fast, accurate point dose measurements with different detector types
- “Plug and Measure” convenience using detector holders – no need to replace phantom or exchange inserts
- Dose verification of non-coplanar treatment plans
Use the “Film” insert for high-resolution dose distribution measurements in a plane using radiochromic films.
RUBY in Clinical Use
Explore how RUBY supports your QA needs.
Single-point dose verification of a non-coplanar patient treatment plan using a detector. Detector is plugged into RUBY PATIENT QA Detector insert using the appropriate detector holder – no need to replace phantom or exchange inserts.
Treatment plan calculated on RUBY phantom with PATIENT QA Detector insert as shown in the treatment planning system. The CT markers are clearly visible, allowing an accurate positioning of the isocenter.
Comprehensive end-to-end test for a non-coplanar treatment plan using RUBY phantom with SYSTEM QA insert and SRS mask
RUBY phantom with SYSTEM QA insert and SRS mask set up on CT couch
Treatment plan calculated on RUBY phantom with SYSTEM QA insert as shown in the treatment planning system. The different cavities (lung, brain, bone, MRI) are clearly visible on the image. CT markers in the base phantom and insert are well detected, allowing an accurate positioning of the isocenter.
Fusion of RUBY CT and MRI images as shown in the treatment planning system
(grey: CT / red: MRI)
Daily accuracy checks of couch shifts:
RUBY with LINAC QA insert and tilting base set up on patient couch with defined offset (red line)
Fusion of RUBY CBCT and planning CT images (without tilting base): System detects misalignment.
Fusion of RUBY CBCT and planning CT images (with tilting base): System detects misalignment, including phantom tilt.
Fusion of RUBY DRR and portal (MV) images: The LINAC QA insert is clearly visible on the MV image. The DRR image can be fused with the MV image to accurately detect misalignment.
