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SOFTWARE ASSISTED METHOD AND SYSTEM FOR LASER POSITIONING IN AN X-RAY APPARATUS

IP.com Disclosure Number: IPCOM000032698D
Publication Date: 2004-Nov-10
Document File: 8 page(s) / 655K

Publishing Venue

The IP.com Prior Art Database

Abstract

A method and system for positioning laser for patient body alignment in an X-ray apparatus, said method comprises the steps of generating a pointer using a computer program, said pointer configured to overlay an X-ray image on a screen, and aligning a laser to incident on the body of a patient, on a spot represented by the pointer.

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SOFTWARE ASSISTED METHOD AND SYSTEM FOR LASER POSITIONING IN AN X-RAY APPARATUS

BACKGROUND OF THE INVENTION

[0001]   This invention relates generally to methods and systems for laser positioning, and more particularly, to software assisted method and system for laser positioning in an X-ray apparatus, especially in diagnostic medical imaging.

[0002]   Laser positioners (e.g. laser pointers) are used as locating tools by surgeons to make an incision or drill on a patient’s body, by locating a point on the outer body of a patient, corresponding to a point on an X- ray image showing the anatomy of the patient. 

[0003]   Known configurations of laser positioners (shown in FIG. 1) include a laser pointer that moves within an X-ray field for projecting a locating reference mark on patient’s body, wherein the laser aimer is attached detachedly or integrally with the tube head of the X-ray apparatus.  However, this arrangement is insufficient for positioning, as the surgeon has to approximately assume the center point of the X-ray image for performing an operation.  Furthermore, this configuration may result in errors that would result in poor performance of surgery..

[0004]    A known system of laser pointer (shown in FIG. 2) includes use of a tungsten cross- wire, wherein the laser from the laser generator is reflected from the cross-wire for forming a mark on the screen at a location exactly on the center of the X-ray image.  Although this configuration provides for an improved accuracy in operation by forming the mark on the screen corresponding to the laser point on the body of a patient, the mechanism including moving fixtures and actuation motors for moving the laser pointer in and out of the X-ray field is very complicated and also very expensive. Furthermore, this arrangement may increase the dosage of X-ray exposure because of substantial time required for moving and aligning laser positioner.

[0005]    Thus, these known configurations do not provide a laser positioning system for forming laser reference marks both on X-ray image as well as patient’s body, which is much less complicated in structure, less expensive and also enable accurate and convenient positioning of patient’s body for operation.

BRIEF DESCRIPTION OF THE INVENTION

[0006]   In one embodiment, a method of positioning laser for patient body alignment in an X-ray apparatus is provided.  The method comprises generating a pointer overlaying an X-ray image on a screen, using a computer program, and aligning a laser to incident on the body of a patient, on a spot represented by the pointer.

[0007]   In another embodiment, a system for laser positioning in an X-ray apparatus is provided.  The system comprises a computer programmed to generate a pointer overlaying an X-ray image on a screen.  An alignment mechanism aligns a laser on a patient’s body, at a position represented by the pointer.

BRIEF DESCRIPTION OF THE INVENTION

[0008]   FIG. 1 shows a laser positioning arrangement...