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A Novel High-Efficiency Algorithm for Optimizing Volumetric Modulated Arc Therapy (VMAT) Radiotherapy Treatment Planning

Technology Benefits

Much faster optimization (only 5-10 minutes on CPU and 25-30 seconds on GPU) compared to the hours required for existing algorithms. Reduces radiation dosage to the organs at risk (OARs) by computing a more conformed treatment volume for the target (compared to IMRT treatment plans).

Detailed Technology Description

UC San Diego researchers have developed an advanced aperture-based algorithm that significantly reduces the processing time for VMAT treatment plan optimization, permitting widespread clinical use of VMAT treatment techniques. This invention uses a column generation method that iteratively solves a sub-problem and a master problem efficiently. The sub-problem provides the most promising aperture to add to a given pool of allowable apertures while the master problem optimizes the intensities of selected apertures.

Supplementary Information

Patent Number: US20130131428A1
Application Number: US13695015A
Inventor: Jiang, Steve B. | Men, Chunhua | Jia, Xun
Priority Date: 28 Apr 2010
Priority Number: US20130131428A1
Application Date: 7 Jan 2013
Publication Date: 23 May 2013
IPC Current: A61N000510
US Class: 600001
Assignee Applicant: The Regents of the University of California
Title: OPTIMIZATION PROCESS FOR VOLUMETRIC MODULATED ARC THERAPY
Usefulness: OPTIMIZATION PROCESS FOR VOLUMETRIC MODULATED ARC THERAPY
Summary: Method for implementing volumetric modulated arc therapy (VMAT) for cancer treatment, for use in aperture-based radiation treatment system (claimed).
Novelty: Method for implementing volumetric modulated arc therapy (VMAT) for cancer treatment, of aperture-based radiation treatment system, involves using determined beam intensities of generated apertures to control radiation dose generation

Industry

Disease Diagnostic/Treatment

Sub Category

Cancer/Tumor

Application No.

9067064

Others

State Of Development

The planning efficiency and treatment plan quality of this novel VMAT optimization technology have been evaluated using ten clinical prostate or head-and-neck cases.

Tech ID/UC Case

20878/2010-287-0

Related Cases

2010-287-0, 2009-313-1, 2009-313-2, 2010-047-1, 2010-220-1

*Abstract

Volumetric modulated arc therapy (VMAT) is a new technique for radiation therapy treatment that provides superior conformal radiation treatment after just one or two arcs of gantry rotation. Compared to currently used intensity modulated radiation therapy (IMRT) techniques, VMAT reduces treatment time and the number of required monitor units. If well-designed, VMAT delivers a more conformal dose to targets and reduces dosage to organs at risk (OARs). However, the currently used optimization algorithms (such as heuristic simulated annealing) for VMAT planning are based on locating a good approximation to the global minimum across a large search space. Unfortunately, this computationally intensive approach typically requires anywhere from thirty to hundreds of minutes of processing time in order to optimize a single treatment plan, thus limiting its wide-spread use in clinical settings.

*IP Issue Date

Jun 30, 2015

*Principal Investigator

Name: Xun Jia

Department:

Name: Steve Jiang

Department:

Name: Chunhua Men

Department:

Country/Region

USA