Manually adjustable movable laser system for patient positioning at CT/PET-CT

Key figures
mm projection precision
mm projection precision
mm line width
mm line width
mm travel range
mm travel range

Choose your optimal combination of lasers for patient marking at CT and PET-CT



The failsafe system verifies the positioning of the laser modules by two technically independent procedures before the lasers are switched on. 

Fits your workflow

Depending on your workflow you can choose between a movable sagittal or a movable sagittal and coronal plane to position and mark the patient. 

Practical adjustable

Fine adjustment of the laser lines (parallel shift, tilt, rotation and focus) can be done manually with an Allen key.

Flexibly configurable

In line with your room design the laser system can be configured with a wall installation, free-standing column or bridge design. 

Comfortably laser steering

You can control the mobile lasers either directly on the patient via a tablet PC or via a desktop PC in the control room. 

Consistently precise

The positioning accuracy of ± 0.1 mm and the projection precision of ± 0.5 mm at a distance of 4 m is measured for every rail during production. The measurement data are delivered with the system. 


DORADO 1 Laser System for Patient Marking


For precise patient alignment and easy marking, you can move the sagittal laser plane. The transversal and coronal plane are projected via fixed laser lines.

DORADO 3 Laser System for Patient Marking


The movable sagittal and coronal plane allow our laser system to offer increased flexibility for patient marking and virtual simulation. The transversal plane is projected via fixed lasers.

Application examples

Reference Marking Worfklow

Reference Marking Worfklow

See how the Reference Point Marking workflow can be applied in a Radiation Therapy. This video helps to figure out how you would like to work in your Radiation Therapy. 

Absolute Marking Workflow

Absolute Marking Workflow

Find out how the Absolute Marking Workflow can be applied and how it helps to save precious LINAC time. This video helps to figure out how you would like to work in your Radiation Therapy. 

Relative Marking Workflow

Relative Marking Workflow

Discover the Relative Marking Workflow and how it helps save precious time at LINAC. This video helps to figure out how you would like to work in your Radiation Therapy.

Technical data

Dimensions Depending on mounting version, please consult our data sheets
Laser color (typical wave length) red (638 nm)
Laser class 2
Laser adjustment manually
Line width up to 4 m distance < 1 mm
Line length at 3 m distance > 3 m
Positioning accuracy +/- 0.1 mm
Projection precision +/- 0.5 mm at a projection distance of 4 m
Travel range 700 mm
Travel speed up to 200 mm/s
Power supply 100-240 V AC, 50-60 Hz
Scope of delivery Laser system, CARINAnav laser control, Wilke phantom, cable set


How long is the laser line?

The length of the laser line is equal to the distance between laser source and patient. Therefore, for example, the laser line is only one meter long at a distance of one meter, but 4 meters long at a distance of 4 meters. 

How can LAP ensure projection precision?

The projection precision is influenced by the straightness of the rail and the temperature. During production, the projection accuracy of each rail is checked twice and documented in the Delivery Report. If it is not within the tolerance, the rail is not used. Only laser devices that pass these stringent checks will be used.

Do I get a quality report?

Yes, during production a Delivery Report with all the quality parameters is created for each laser system, which is handed over to our customers after installation.

Further resources

Find out why lasers point the way to optimized workflows in radiation therapy in the article on physics world.

This webinar focuses on how lasers make the difference in patient alignment.

Find out how lasers are used for the QA for CT simulators and external patient marking according to the report of the AAPM Radiation Therapy Committee Task Group No. 66.

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