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Image Guided Radiation Therapy Time Profiler

IP.com Disclosure Number: IPCOM000188258D
Original Publication Date: 2009-Oct-14
Included in the Prior Art Database: 2009-Oct-14
Document File: 3 page(s) / 105K

Publishing Venue

Siemens

Related People

Juergen Carstens: CONTACT

Abstract

Radiotherapy is the primary line of treatment for lung and prostate tumors, which are two major types of cancer. As lung and prostate organs move with respiration, exact beam delivery to the moving organs is a challenge to radiation oncologists. In this context, Image Guided Radiation Therapy (IGRT) is one of the most sophisticated Radiation Treatment delivery techniques. Image guidance is used to check the tumor position just before the radiation delivery while the patent is on the Linear Accelerator (LINAC) couch. The reconfirmation of the tumor position during the exposure to radiation and the verification that it is exactly at the same anatomical position as planned is very critical for the success of the therapy. The image guidance is in the majority of cases done with Cone Beam Computed Tomography or with Portal Imaging.

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Image Guided Radiation Therapy Time Profiler

Idea: Purna Chandra Peddineni, IN-Bangalore

Radiotherapy is the primary line of treatment for lung and prostate tumors, which are two major types

of cancer. As lung and prostate organs move with respiration, exact beam delivery to the moving

organs is a challenge to radiation oncologists.

In this context, Image Guided Radiation Therapy (IGRT) is one of the most sophisticated Radiation

Treatment delivery techniques. Image guidance is used to check the tumor position just before the

radiation delivery while the patent is on the Linear Accelerator (LINAC) couch. The reconfirmation of

the tumor position during the exposure to radiation and the verification that it is exactly at the same

anatomical position as planned is very critical for the success of the therapy. The image guidance is in

the majority of cases done with Cone Beam Computed Tomography or with Portal Imaging.

The common clinical IGRT workflow is shown in Figure 1. It is very essential to complete the whole

process in less than 8-15 minutes. This means that in a busy radiotherapy centre with a significant

number of patients the workflow has to be optimally planed and executed. The situation demands a

careful monitoring of all steps for each patient in order to execute the treatment in a minimal amount of

time and to eliminate systematic delays in the process.

Currently, there is no easy to handle tool available for oncologists or the department supervisor to

evaluate the exact time that different steps of the IGRT workflow take and for optimizing the use of

machines and resources. Up to now, the time that different operations take is calculated and analyzed

manually.

To improve this situation it is now proposed to create a software tool, called "IGRT Time Profiler",

which can be hosted as a part of existing Radiation Therapist Technologist (RTT) workspaces, i.e. the

same workflow depicted in Figure 1 is taken into account. Any of the workflow steps can act as starting

and ending action and the time between these events is recorded by the application. The IGRT Time

Profiler can be configured with different user actions dependent on the individual clinical requirements. The time measurement can be automated to record each radiotherapy fraction of the patients.

Subsequently, the data can be used to periodi...