Dynamic surface matching for patient positioning in radiotherapy

Graham, Paul; Moore, C. J.; Mackay, Ranald I; Sharrock, Phillip J

doi:10.1109/iv.1998.694194

Cited by 5 publications

(3 citation statements)

References 13 publications

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“…9, 10,11). During radiotherapy planning [3,9], Anthropometric Digital Model can be used to simulate all kinds of situations on the simulator and the linear accelerator, without the patient needing to be present, so that the medical physicist or dosimetrist will be able to design a program that is tailored to the patient. This way, for example, the gantry of the linear accelerator can be prevented from touching the patient, so that radiotherapy can be properly and optimally performed (Figs.…”

Section: Resultsmentioning

confidence: 99%

The Application of Full Scale 3d Anthropometric Digital Model System in Radiotherapy Positioning and Verification

Sun

2004

Biomed. Eng. Appl. Basis Commun.

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The full scale 3D Anthropometric Digital Model system is a technique combining digital imaging, three-dimensional (3D) image processing and reverse engineering to produce a full-scale solid Anthropometric Digital Model. This paper describes the Anthropometric Digital Model being made and used in radiation treatment. By using computed tomography and optical scanning, the data required for the Anthropometric Digital Model is collected. Through surface reconstruction, a model of the patient skull is made, after which rapid prototyping and rapid tooling is applied to acquire a 1:1 solid model. Thus, without the patient needing to be present, the medical physicist or dosimetrist will be able to design a treatment plan tailored to the patient and to simulate all kinds of situations on the simulator and the linear accelerator for positioning and verification. We expect that the application of Anthropometric Digital Model can reduce the time spent on pretreatment procedures in radiotherapy and enhance the quality of health care for cancer patients.

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Section: Resultsmentioning

confidence: 99%

The Application of Full Scale 3d Anthropometric Digital Model System in Radiotherapy Positioning and Verification

Sun

2004

Biomed. Eng. Appl. Basis Commun.

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“…However, comparison of the entire surface would give better results. In Graham's et al (1998) work on dynamic surface matching, the body surface height maps from the CT scan and optical sensor were compared. Color‐coding was used to distinguish the surfaces that were compared in near real time.…”

Section: Introductionmentioning

confidence: 99%

A vision system for patient positioning in radiation therapy

et al. 2005

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If you would like to write for this, or any other Emerald publication, then please use our Emerald for Authors service information about how to choose which publication to write for and submission guidelines are available for all. Please visit www.emeraldinsight.com/authors for more information. About Emerald www.emeraldinsight.comEmerald is a global publisher linking research and practice to the benefit of society. The company manages a portfolio of more than 290 journals and over 2,350 books and book series volumes, as well as providing an extensive range of online products and additional customer resources and services.Emerald is both COUNTER 4 and TRANSFER compliant. The organization is a partner of the Committee on Publication Ethics (COPE) and also works with Portico and the LOCKSS initiative for digital archive preservation. AbstractPurpose -The paper outlines a new approach for positioning a patient on the treatment table for radiation therapy sessions. The vision approach utilizes lasers and cameras for positioning and has several advantages over the conventional methods. Design/methodology/approach -The positioning is accomplished by comparison of a set of computed tomography (CT) contours (acquired from the patient) with a set of corresponding contours acquired by a 3D vision system from the same region of the patient's body. The overall positioning error calculated by the iterative closest point algorithm is used to reorient the treatment table. Various issues related to the acquisition and generation of the 3D spatial data are discussed. Findings -Positioning is accurate and can detect small movement in the patient's position.Research limitations/implications -Testing was done on a cast of a human torso and additional testing is required on in a hospital environment to fully test the efficiency of the approach. Practical implications -The method merges data readily available from standard CT imaging systems and 3D imaging systems. Therefore, the additional hardware requirements are minimal. The system integrates well with existing hardware, software and treatment practices. Originality/value -The method introduces a new approach to patient positioning employing a combination of sensor technologies. The approach is accurate, reliable, consumes less time and most importantly prevents the use of X-rays for patient positioning.

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“…8). During radiotherapy planning [11,12], solid Anthropometric Model can be used to simulate all kinds of situations on the simulator and the linear accelerator, without the patient needing to be present, so that the medical physicist or dosimetrist will be able to design a program that is tailored to the patient (Fig. 9).…”

Section: Discussionmentioning

confidence: 99%

Using The Full Scale 3D Solid Anthropometric Model in Radiation Oncology Positioning and Verification

Sun

Wu²

The 26th Annual International Conference of the IEEE Engineering in Medicine and Biology Society

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This paper describes the full size solid 3D Anthropometric Model using in the positioning and verification process for radiation treatment planning of the skull of cancer patients in radiotherapy. In order to obtain a full scale 3D, solid Anthropometric Model, data is first collected through computed tomography and optical scanning. Through surface reconstruction, a model is made of the patients skull, after which rapid prototyping and rapid tooling is applied to acquire a 1:1 solid model, thus, it can replace the patient for the tumor positioning and verification in radiotherapy. The 3D Anthropometric Model are not only provide a clear picture of the external appearance, but also allow insight into the internal structure of organic bodies, which is of great advantage in radiotherapy. During radiotherapy planning, 3D Anthropometric Model can be used to simulate all kinds of situations on the simulator and the linear accelerator, without the patient needing to be present, so that the medical physicist or dosimetrist will be able to design a precise treatment plan that is tailored to the patient. The 3D Anthropometric Model production system can effectively help us solve problems related to r adiotherapy positioning and verification, helping both radiotherapists and cancer patients. We expect that the application of 3D Anthropometric Model can reduce the time that needs to be spent on pretreatment procedures and enhance the quality of health care for cancer patients.

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Dynamic surface matching for patient positioning in radiotherapy

Cited by 5 publications

References 13 publications

The Application of Full Scale 3d Anthropometric Digital Model System in Radiotherapy Positioning and Verification

The Application of Full Scale 3d Anthropometric Digital Model System in Radiotherapy Positioning and Verification

A vision system for patient positioning in radiation therapy

Using The Full Scale 3D Solid Anthropometric Model in Radiation Oncology Positioning and Verification

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