Attaching The Localizer - Brainlab RT/RS Hardware User's Manual

Stereotactic hardware

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IMAGING

4.1.2

Attaching the Localizer

How to Attach the CT/X-Ray Localizer

Before scanning the patient, take the following steps:

Steps

Do not use the CT/X-Ray Localizerif the fixing mechanism does not fit exactly into the locks

of the headring/mask system or if the locks can not be fastened correctly.

How to Attach the CT/X-Ray Localizer for Leksell Headring

The CT/X-Ray Localizer for Leksell Headring can only be used with the Leksell G-frame

headring. Instead of ball feet it has four alignment pins that fit onto the Leksell headring.

Otherwise, the procedure for attachment is nearly identical.

To ensure an accurate imaging, objects should not be inserted between the Leksell G-

frame headring and the CT/X-Ray Localizer for Leksell Headring.

Only use the CT/X-Ray Localizer for Leksell Headring if it can be firmly secured to the

Leksell G-frame headring.

How to Position the Localizer

Always position the localizer perpendicular to the axes of the scanner couch and the gantry, to

permit scanning the CT slices in the desired thickness and configuration.

Generally the localizer is put on the localizer support during the scan for proper positioning.

Following image acquisition, the patient may leave the scanner and be transferred to the

procedure area. In the meantime, the scan data may be analyzed and transferred to the

BrainSCAN or iPlan RTtreatment planning system.

NOTE: When using the localizer in combination with any compatible headring, it is not necessary

to rigidly mount the headring to the CT couch, as the Brainlab treatment planning software can

correct for small shifts during scanning.

Hardware User Guide Rev. 4.9 RT / RS Stereotactic Hardware

Place the patient on the imaging couch in a supine position.

Attach the CT/X-Ray Localizer to the Brainlab (or the Radionics BRW) headring, or

the Stereotactic Mask System.

The three ball feet of the localizer should fit precisely into the locks of the Brainlab

headring or mask system. The localizer cannot be incorrectly mounted due to the

asymmetrical arrangement of the fixing mechanism.

NOTE: Once the localizer has been mounted onto the headring or mask system, the

plate marked with a "R" is on the right side of the patient's head, while the plate

marked with an "A" is on the frontal calvarial part of the patient's face.

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