Dismiss
InnovationQ will be updated on Sunday, Oct. 22, from 10am ET - noon. You may experience brief service interruptions during that time.
Browse Prior Art Database

A Method to Adapt the Dose Modulation More Precisely

IP.com Disclosure Number: IPCOM000207389D
Original Publication Date: 2011-May-30
Included in the Prior Art Database: 2011-May-30
Document File: 3 page(s) / 504K

Publishing Venue

Siemens

Related People

Juergen Carstens: CONTACT

Abstract

CARE Dose 4D is one of the newest examples of technological progress and approach for automated optimization and minimization of radiation doses. It allows for automatic tube current adaption depended on the size and anatomic shape of the patient and therefore, controlling the exposure. Furthermore, the tube current modulation can be controlled online for each tube rotation. For every body section of the patient, the adequate tube current is determined based on real time measurement of the attenuation values of the X-ray. CARE Dose 4D modulates the tube current online during each tube rotation according to the patients attenuation profile of lateral topogram. By those means the dose modulation can be adapted more precisely and more modulation curves can be selected. In addition, the user is able to select special dose modulation curves for children in order to minimize exposure. All relevant parameters which need to be configured by the user are grouped on a single task card.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 51% of the total text.

Page 01 of 3

(This page contains 01 pictures or other non-text object)

(This page contains 00 pictures or other non-text object)

A Method to Adapt the Dose Modulation More Precisely

Idea: Tao Fan, CH-Shanghai; Sebastian Gehrsitz, DE-Forchheim

CARE Dose 4D is one of the newest examples of technological progress and approach for automated optimization and minimization of radiation doses. It allows for automatic tube current adaption depended on the size and anatomic shape of the patient and therefore, controlling the exposure. Furthermore, the tube current modulation can be controlled online for each tube rotation. For every body section of the patient, the adequate tube current is determined based on real time measurement of the attenuation values of the X-ray. CARE Dose 4D modulates the tube current online during each tube rotation according to the patients attenuation profile of lateral topogram. By those means the dose modulation can be adapted more precisely and more modulation curves can be selected. In addition, the user is able to select special dose modulation curves for children in order to minimize exposure. All relevant parameters which need to be configured by the user are grouped on a single task card.

At present, in order to choose an applicable current attenuation curve, as shown in figure 1, the user can select the current decrease for slim patients and the increase for obese patients with three graded options: strong, average and weak. This is shown in figure 2. It is a simple method which is independent of the organ characteristics of the patient.

In the following, a new method for adapting dose modulations is proposed which is more precise than the state of the art solution. More current attenuation curves can be selected which can be set independently for different organ characteristics. As shown in figure 3, for different organs t...