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Function / Button for Automatic Alignment of the Planned Device Entry Point and the Laser Light of the MR Scanner

IP.com Disclosure Number: IPCOM000202432D
Original Publication Date: 2010-Dec-15
Included in the Prior Art Database: 2010-Dec-15
Document File: 2 page(s) / 132K

Publishing Venue

Siemens

Related People

Juergen Carstens: CONTACT

Abstract

During MR-guided percutaneous interventions the medical device can be initially positioned with the planned device entry point being aligned with the laser light of the MR (Magnetic Resonance) scanner. After initial positioning of the device, the device is placed into the target location under real-time MR imaging. The workflow of MR-guided placement of medical devices can be described by the steps in figure 1.

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Function / Button for Automatic Alignment of the Planned Device Entry Point and the Laser Light of the MR Scanner

Idea: Eva Rothgang, DE-Erlangen

During MR-guided percutaneous interventions the medical device can be initially positioned with the planned device entry point being aligned with the laser light of the MR (Magnetic Resonance) scanner. After initial positioning of the device, the device is placed into the target location under real-time MR imaging. The workflow of MR-guided placement of medical devices can be described by the steps in figure 1.

The proposed idea is to have a user interface (UI) button, like for example "Move to Entry Point", or other form of UI functionality for automatic alignment of the planned device entry point with the laser light of the MR scanner. The required movement of the table can be calculated as follows:

Δ

+

SP

+

         IsoLaser
move

T

,

if

SP

H

,

T

= ,

,

entry

poi

nt

current

Δ

SP

+

T

if

SP

F

IsoLaser

entry

poi

nt

current

where is the table movement needed for alignment,

move

T IsoLaser

Δ

is the distance between the

isocenter of the MR scanner and the laser light, is the slice position of the planned device

entry point, is the current table position and means the device entry point slice is

positioned towards the head / feet from the isocenter.

nt

SP

entry

poi

T

SP

H

/

F

current

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