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AUTOMATED PATIENT CENTERING DURING PATIENT LOADING BASED ON PATIENT WEIGHT

IP.com Disclosure Number: IPCOM000240645D
Publication Date: 2015-Feb-16
Document File: 3 page(s) / 195K

Publishing Venue

The IP.com Prior Art Database

Abstract

The present invention provides an automatic patient centering technique. The technique includes a patient positioning workflow. The workflow includes selecting an optimum table elevation to center the patient inside a scan field of view. The proposed workflow calculates table elevation according to patient weight. Subsequently, the calculated table elevation is used as target elevation for table load operation using foot pedal.

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AUTOMATED PATIENT CENTERING DURING PATIENT LOADING BASED ON PATIENT WEIGHT

BACKGROUND

The present invention relates generally to computed tomography (CT) and more particularly to an automated patient centering technique for computed tomography system.

Radiation doses and image quality are optimized when radiologists or operators position patients at isocenter within a computed tomography (CT) gantry. In some cases, this can mean significant dose reduction. Usually, patients are not positioned accurately in the gantry isocenter due to manual operation of centering patient within the CT gantry.

Generally, a foot pedal is used to move patient table to a default elevation. An operator then moves the table up or down manually to center the patient.

A conventional technique includes manual conversion from patient weight to table position. The manual conversion is used manually by an operator to center the patient. However, manual selection of table elevation is subject to operator error.

It would be desirable to have an efficient technique to provide patient centering during patient loading for CT scan.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 depicts a graph between patient height and patient weight for several patient scans.

Figure 2 depicts a flowchart illustrating the proposed workflow.

DETAILED DESCRIPTION

The present invention provides an automatic patient centering technique. The technique includes a patient positioning workflow. The workflow includes selecting an optimum table elevation to center a patient inside a scan field of view. The proposed workflow calculates table elevation according to patient weight. Subsequently, the calculated table elevation is used as target elevation for table load operation using foot pedal.

For example, an analysis of about 229 patient scout scans from a clinical data reveals that the selected table elevation is l...