MRI in radiation therapy

MR3T LASER SYSTEMS IN RT - ESSENTIAL FOR PRECISE PATIENT ALIGNMENT

The irradiation of tumor tissue has been enormously improved over the last 20 years. Dose and beam can be accurately controlled with today’s modern Linacs to minimize patient risks. The increasing precision of the linear accelerators requires a more precise irradiation planning. To determine the dose and the target position, the tumor and healthy tissue must be discriminated precisely from one another.

Magnetic Resonance Imaging (MRI) provides excellent soft tissue contrast for more detailed information to distinguish healthy tissue from gross tumor volume. In addition, physiological information such as diffusion and perfusion of the treatment region can be obtained to better define the target volume. MRI does not use X-rays or other radiation so that the patient is not exposed to any additional dose. This is another important factor that increases the interest in MRI as complementary image modality in RT.

In order to be able to utilize the advantages of additional imaging by means of MRI in RT, a precise and reproducible patient position on both imaging modalities - CT and MRI - is essential for accurate image fusion later in the treatment chain.

LAP IS YOUR IDEAL PARTNER FOR YOUR EXTERNAL LASER SYSTEMS

The characteristic features of LAP laser systems are sophisticated technology, quality and design for more than 30 years. This level of excellence has made us the global market leader for patient alignmentin radiotherapy. With our dedicated technology for MRI we are setting standards with the world‘s only certified MR conditional laser systems.

OUR CUSTOMIZED MR3T LASER BRIDGE SYSTEMS ARE RECOMMENDED BY LEADING MRI SCANNER VENDORS.

CHOOSING LAP’S MR3T LASER SYSTEMS IN RT INCLUDE …

LAPs MR3T systems are the world's only certified laser systems in RT

… SAFETY FIRST

WITH THE WORLD’S ONLY MR CONDITIONAL CERTIFIED LASER SYSTEMS IN RT

Continuous in-house research and development is our cornerstone to qualify for the certificate. The design and technology of each component is specifically designed for use in the MRI environment. In perfect synergy with MR scanners from leading suppliers, we guarantee SAFETY FIRST:

  • Our free standing customized laser bridge systems compensate for all magnetically induced displacement forces
  • All electronic components have no impact on the MR image quality

Certified by an independent testing facility DORADOnova MR3T and APOLLO MR3T are the world’s only laser systems for patient alignment which fulfill MRI conditional requirements up to 3 Tesla.

 

 

MR room planning

… ROOM PLANNING

OUR PRE-INSTALLATION SERVICE

No radiation therapy facility set up is alike. LAP always integrates room planning into each MRI project. With the same care with which we develop innovative products, we support you with a professional room planning service. We take your individual room situation into account and thus ensure the accuracy and safety of our MRI dedicated, customized laser bridge systems at a much wider level.

 

 

… ACCURACY AND PRECISION

IN PATIENT POSITIONING

The fusion of MR images with CT images is advantageous for the contouring of the target volume and identifying organs at risk. The combination of LAP MR3T laser systems and MRI is highly qualified for accurate, fast and better adaptation of the two imaging modalities. An accurate and precise anatomical patient position with the support of a customized laser bridge system can not be replaced by rigid and deformable image registration algorithms. Modern treatment techniques require precision in every stage of the entire treatment chain, beginning with precise and reproducible patient positioning with the help of a dedicated external laser system.

Fusion of MR and CT images

AS PRECISION MATTERS …

Our customized MR3T laser bridge systems with a robust and durable construction assure a vibration free and mechanically stable set up in each MR room environment. In addition all walls and ceilings stay unaffected and the Faraday cage in the MR room remains intact. The customized MR3T laser bridge from LAP and the MRI scanner form a reliable unit.

LAP’S FIRST CLASS LASER TECHNOLOGY …

… IS ESSENTIAL TO SUPPORT PATIENT ALIGNMENT IN YOUR MR-ENHANCED TREATMENT CHAIN

 

CT Scan

Patient positioning and marking with external laser system in treatment position

 

MR SCAN

Patient positioning with external laser system identical to CT position

YOUR WORKFLOW - YOUR CHOICE
Whichever LAP MR3T Laser System you choose – safety first –
the world’s only MR conditional certified laser systems in RT.

APOLLO MR3T
APOLLO MR3T bridge

ESSENTIAL AND ELEMENTARY

Customized laser bridge system configuration with three integrated cross-hair lasers projecting fixed 3D coordinates of body planes to support patient alignment according to CT.

APOLLO MR3T is not yet available, stay tuned!

DORADOnova MR3T
DORADOnova MR3T

ESSENTIAL AND COMFORTABLE

Customized laser bridge system configuration for a corresponding projection of laser lines according to CT position. The sagital and horizontal planes are steerable by the included CARINAnav laser control, allowing easy and efficient patient alignment. The control software is operated by a touch screen mounted to the customized bridge, for easy laser control in the MR room. The fibre optic connection to the PC in the control room fulfills the electromagnetic interference requirements for MR.

 

CARINAnav

MR Version:
Touchscreen operation
Easy navigation, intuitive laser control
Windows 10 based desktop PC

 

 

 

IMAGE FUSION

For contouring the target volume and identifying organs at risk

 

TREATMENT PLANNING

For precise and successful patient irradiation

 

TREATMENT

Patient positioning with external lasers

TECHNICAL DATA

APOLLO MR3T / DORADOnova MR3T
Dimensions (customized)Width: 2594-5000 mm (102.0‘‘-196.9‘‘), Height: 2300-2800 mm (90.6‘‘-110.0‘‘)
Weightapprox. 100 kg
Laser colorred (638 nm), green (520 nm), blue (450 nm)
Laser class2
Line length at 3 m distance3 m
Line width up to 4 m distance< 0.5 mm (blue), < 1 mm (red, green)
Power supply100 … 240 VAC, 50 … 60 Hz
 

DORADOnova MR3T
Positioning accuracy+/- 0.25 mm
Projection accuracy+/- 0.5 mm at a projection distance of 4 m
Travel range700 mm
Travel speedup to 200 mm/s