QUASARTM MRI4D Motion Phantom

First MR-safe programmable motion phantom for testing and validating 4D treatment delivery protocols on MR-sim and MR-Linacs. 

It offers interchangeable inserts for imaging, planning, and dosimetry QA. The included software allows for creating, importing, editing, and streaming patient-specific respiratory waveforms.

Compatible with Machine/Modality/Application:

Adaptive,

CBCT,

Bore-type linacs,

Hypersight,

IGRT,

Motion Management,

MR Guided Radiotherapy,

MR Simulation,

Proton Therapy,

SGRT,

TG284,

TG66

Used for Workflow

Imaging QA PT,

Imaging QA RT,

Commissioning and Annual QA RT,

Commissioning and Annual QA PT,

Motion Management MQA,

Motion Management MQA

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Features

100% MR Safe

100% MR Safe

The patented MRI⁴ᴰ design allows phantom placement directly within the MR bore enabling quick, easy and precise operation. Efficient piezoelectric motor assembly allows for high quality, artifact-free imaging up to 3T. MRI⁴ᴰ design preserves image quality by maintaining B0 homogeneity and minimizing magnetic eddy currents within the MR system.

Workflow Efficiency

Workflow Efficiency

Compact, integrated phantom design along with easy-to-use motion software saves time and increases operational efficiency by reducing or eliminating the need for complex or tedious assembly before and after operation. Superior imaging contrast provides easy target detection, which simplifies testing setup while maximizing accuracy.

Testing Versatility

Testing Versatility

Fillable components allow complete customization of contrast media, enabling improved visualization of desired structures. Configurable and interchangeable dosimetry inserts increase the functionality of the MRI⁴ᴰ. With the flexibility of choosing motion location and phantom orientation, the MRI⁴ᴰ is able to fulfill a physicist’s most demanding QA needs.

System Compatibility

System Compatibility

Configurable contents within the body oval and inserts create utility within MR, CT and PET-based systems. MRI⁴ᴰ can perform motion QA across all platforms, providing a comprehensive end-to-end validation of treatment protocols. Use the MRI⁴ᴰ with confidence on all of your radiation therapy treatment planning and delivery systems.

Latency Tools

Latency Tools

MRI⁴ᴰ provides analog input and output connectivity to provide real-time latency statistics without the use of an external oscilloscope. The user can select beam on/off triggering points within the software to quantify the treatment system’s total latency values. Intuitive target delineation and real-time latency reporting increases the MRI⁴ᴰ's ease of use.

Ultra-Low Latency Motion

Ultra-Low Latency Motion

The MRI⁴ᴰ features an ultra-low latency controller (500µs), which does not contribute significant phantom latency to the motion management system analysis. An ultra-low latency phantom is critical for accurate latency measurements and instilling confidence that your QA process has provided you with the most accurate and precise information.

Complex Motion

Complex Motion

Programmable 3D target motion provides in-depth QA of MRgRT gating and tracking systems. Users have the choice to set the complexity of motion with our intuitive Respiratory Motion Software. Test the limits of motion management systems by delivering clinically relevant and demanding motion sequences with the MRI⁴ᴰ.

100% MR Safe

The patented MRI⁴ᴰ design allows phantom placement directly within the MR bore enabling quick, easy and precise operation. Efficient piezoelectric motor assembly allows for high quality, artifact-free imaging up to 3T. MRI⁴ᴰ design preserves image quality by maintaining B0 homogeneity and minimizing magnetic eddy currents within the MR system.

Workflow Efficiency

Compact, integrated phantom design along with easy-to-use motion software saves time and increases operational efficiency by reducing or eliminating the need for complex or tedious assembly before and after operation. Superior imaging contrast provides easy target detection, which simplifies testing setup while maximizing accuracy.

Testing Versatility

Fillable components allow complete customization of contrast media, enabling improved visualization of desired structures. Configurable and interchangeable dosimetry inserts increase the functionality of the MRI⁴ᴰ. With the flexibility of choosing motion location and phantom orientation, the MRI⁴ᴰ is able to fulfill a physicist’s most demanding QA needs.

System Compatibility

Configurable contents within the body oval and inserts create utility within MR, CT and PET-based systems. MRI⁴ᴰ can perform motion QA across all platforms, providing a comprehensive end-to-end validation of treatment protocols. Use the MRI⁴ᴰ with confidence on all of your radiation therapy treatment planning and delivery systems.

Latency Tools

MRI⁴ᴰ provides analog input and output connectivity to provide real-time latency statistics without the use of an external oscilloscope. The user can select beam on/off triggering points within the software to quantify the treatment system’s total latency values. Intuitive target delineation and real-time latency reporting increases the MRI⁴ᴰ's ease of use.

Ultra-Low Latency Motion

The MRI⁴ᴰ features an ultra-low latency controller (500µs), which does not contribute significant phantom latency to the motion management system analysis. An ultra-low latency phantom is critical for accurate latency measurements and instilling confidence that your QA process has provided you with the most accurate and precise information.

Complex Motion

Programmable 3D target motion provides in-depth QA of MRgRT gating and tracking systems. Users have the choice to set the complexity of motion with our intuitive Respiratory Motion Software. Test the limits of motion management systems by delivering clinically relevant and demanding motion sequences with the MRI⁴ᴰ.

Software

Included with the MRI⁴ᴰ phantom is an intuitive programmable respiratory motion QA software. This locally-installed package enables the control of the phantom’s motion, importation and customization of motion waveforms and the reporting of system latency values. An incorporated Deep Inspiration Breath Hold Function increases workflow efficiency for users to test DIBH protocols.

Complex Motion Control Options

Complex Motion Control Options

MRI⁴ᴰ offers full control of your phantom’s motion profile. Our Respiratory Motion QA Software offers multiple operation modes to increase utility. From adjustable sinusoidal motion and simple test patterns to accurate playback of complex 3D waveforms, the MRI⁴ᴰ offers the flexibility to choose your motion complexity for your required testing sequence.

Customizable Waveforms

Customizable Waveforms

In addition to an extensive library of pre-loaded waveforms, the Respiratory Motion QA Software enables the import of acquired waveforms from a number of respiratory gating and motion tracking systems. The waveforms are completely customizable, improving the user experience when modifying waveform patterns to achieve the desired testing protocol.

Latency Data Reporting

Latency Data Reporting

A new generation of MR-guided radiotherapy systems requires detailed reporting of their system latency. The MRI⁴ᴰ is equipped for current and future testing capabilities needed for gating and tracking techniques. Using the advanced latency reporting capabilities, physicists can improve the accuracy and confidence of their MRgRT delivery.

Complex Motion Control Options

MRI⁴ᴰ offers full control of your phantom’s motion profile. Our Respiratory Motion QA Software offers multiple operation modes to increase utility. From adjustable sinusoidal motion and simple test patterns to accurate playback of complex 3D waveforms, the MRI⁴ᴰ offers the flexibility to choose your motion complexity for your required testing sequence.

Customizable Waveforms

In addition to an extensive library of pre-loaded waveforms, the Respiratory Motion QA Software enables the import of acquired waveforms from a number of respiratory gating and motion tracking systems. The waveforms are completely customizable, improving the user experience when modifying waveform patterns to achieve the desired testing protocol.

Latency Data Reporting

A new generation of MR-guided radiotherapy systems requires detailed reporting of their system latency. The MRI⁴ᴰ is equipped for current and future testing capabilities needed for gating and tracking techniques. Using the advanced latency reporting capabilities, physicists can improve the accuracy and confidence of their MRgRT delivery.

Inserts and accessories

MRI4D Deformable Insert

MRI4D Deformable Insert

Integrate Deformable 4D Tumor Motion Tracking into your ADAPTIVE MRgRT QA Protocol.

The QUASAR™ MRI 4D Deformable Target Insert is an advanced imaging tool that provides realistic tumor motion and deformation for the testing of today’s leading-edge technology. The insert offers repeatable physiological 30 tumor motion in a sinusoidal or programmable pattern. This simulation is instrumental in creating and validating motion tracking protocols on all advanced systems, including: CT, MRI, and today’s leading MR-LINACs.

Hollow acrylic insert

Hollow acrylic insert

Hollow Acrylic Insert: Item #500-3605

Every MRI4D Motion Phantom includes two Hollow Acrylic Inserts, each featuring a 30mm ID fillable spherical target with stem and two seal-lids (one plain, and one with central and offset mounting holes). Additional Hollow Acrylic Inserts (#500-3605) and Fillable Spherical Targets (#500-3606) are available for purchase separately.

Find more information in the technical specifications sheet.

Ion chamber holders

Ion chamber holders

Expand the capabilities of the Hollow Acrylic Insert with an MRI4D Ion Chamber Holder; available in central and 15mm offset configurations for complex 3D motion testing. Both Ion Chamber Holders include a 30mm OD solid contouring sphere with 5mm isocenter locating groove, and a 30mm ID fillable spherical tracking target. 

Options include a Solid Contouring Cuboid (#500-3608) and an MV Imaging Ceramic Sleeve (#500-3617). (Ion chamber type to be specified at time of ordering — major suppliers available upon request.)

Find more information in the technical specifications sheet.

Film Cassette Insert

Film Cassette Insert

The MRI4D Film Cassette Insert (Item #500-3607) accommodates one layer of EBT3 film with dimensions of 70mm x 175mm. The convenient, hinged cassette features indentation structures to provide film reference marks and is designed to slide into the insert body without affecting signal-generating fluid levels. The insert body features a 30mm OD solid spherical target with incorporated contouring features to enable MR/MV tracking. A threaded hole, located in the insert cap, allows the attachment of a 30mm fillable spherical target for additional tracking capabilities.

Find more information in the technical specifications sheet.

 

MRI4D Deformable Insert

Integrate Deformable 4D Tumor Motion Tracking into your ADAPTIVE MRgRT QA Protocol.

The QUASAR™ MRI 4D Deformable Target Insert is an advanced imaging tool that provides realistic tumor motion and deformation for the testing of today’s leading-edge technology. The insert offers repeatable physiological 30 tumor motion in a sinusoidal or programmable pattern. This simulation is instrumental in creating and validating motion tracking protocols on all advanced systems, including: CT, MRI, and today’s leading MR-LINACs.

Hollow acrylic insert

Hollow Acrylic Insert: Item #500-3605

Every MRI4D Motion Phantom includes two Hollow Acrylic Inserts, each featuring a 30mm ID fillable spherical target with stem and two seal-lids (one plain, and one with central and offset mounting holes). Additional Hollow Acrylic Inserts (#500-3605) and Fillable Spherical Targets (#500-3606) are available for purchase separately.

Find more information in the technical specifications sheet.

Ion chamber holders

Expand the capabilities of the Hollow Acrylic Insert with an MRI4D Ion Chamber Holder; available in central and 15mm offset configurations for complex 3D motion testing. Both Ion Chamber Holders include a 30mm OD solid contouring sphere with 5mm isocenter locating groove, and a 30mm ID fillable spherical tracking target. 

Options include a Solid Contouring Cuboid (#500-3608) and an MV Imaging Ceramic Sleeve (#500-3617). (Ion chamber type to be specified at time of ordering — major suppliers available upon request.)

Find more information in the technical specifications sheet.

Film Cassette Insert

The MRI4D Film Cassette Insert (Item #500-3607) accommodates one layer of EBT3 film with dimensions of 70mm x 175mm. The convenient, hinged cassette features indentation structures to provide film reference marks and is designed to slide into the insert body without affecting signal-generating fluid levels. The insert body features a 30mm OD solid spherical target with incorporated contouring features to enable MR/MV tracking. A threaded hole, located in the insert cap, allows the attachment of a 30mm fillable spherical target for additional tracking capabilities.

Find more information in the technical specifications sheet.

 

Technical Specifications

Specifications

  • MR-Safe Motor Assembly: 50.5 cm L x 15.25 cm W x 18 cm H (dimensions), 3.2 kg (weight)
  • Linear Motion: ± 20mm (continuous sinusoidal), ±15mm (programmable) along Z axis
  • Non-linear Motion: 60 deg total twist range along X/Y axis (Rotation Mode), 30 deg (max) total twist range (Sinusoidal Mode, amplitude dependent), 11 deg (max) total twist range (Oscillation Mode, waveform dependent)
  • Motion Precision: ± 0.25 mm (along Z-axis), ± 2º (rotation twist)
  • MR Body Oval: liquid fillable 20 cm L x 30 cm W x 20 cm H with two insert openings for central or offset imaging
  • Interchangeable Insert: 25 cm long x 7.4 cm internal diameter, 1 kg (when liquid filled)
  • Mounting Stem & Target: mounting stem attaches 30 mm spherical target (air or liquid filled) to seal-ring lid
  • Seal-Ring Lids: 1-w/central mounting stem position, 1-w/dual offset mounting stem positions, 1-w/no mount position
  • Dovetail Collar: with thumbscrew lock to secure position of fixed interchangeable insert within MR Body Oval opening
  • Cables: quadruple shielded DB 15 male to female cables, CAT5 Ethernet cable
  • Power Supply: DC power supply with AC power cord (110-220V, 50-60Hz)

Minimum Technical Requirements

  • Operating System: Windows 7 SP1, 8.1 or 10
  • Ports: 1 Ethernet

100-1022: QUASAR™ MRI⁴ᴰ Motion Phantom

  • 1-Phantom
  • 1-Software License

Find more resources here

Brochures

Scientific References

MR Simulation Overview Flyer 04_25
Brochures (225 KB)
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Modus QA -Product Data Sheet -MRI4D Deformable Insert
Brochures (848 KB)
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Modus QA - Product Data Sheet MRI4D ViewRay Package
Brochures (782 KB)
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Modus QA - Product Data Sheet MRI4D Inserts
Brochures (214 KB)
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Modus QA - Product Data Sheet MRI4D
Brochures (304 KB)
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MRI4D Motion Phantom Flyer
Brochures (304 KB)
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MRI4D: Commissioning of a motion management system for a 1.5T Elekta Unity MR-Linac_ by Blake R. Smith
Scientific References (2 MB)
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