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Title: Clinical experience with a 3D surface patient setup system for alignment of partial-breast irradiation patients

Abstract

Purpose: To assess the utility of surface imaging on patient setup for accelerated partial-breast irradiation (APBI). Methods and Material: A photogrammetry system was used in parallel to APBI setup by laser and portal imaging. Surface data were acquired after laser and port-film setup for 9 patients. Surfaces were analyzed in comparison to a reference surface from the first treatment session by use of rigid transformations. The surface model after laser setup was used in a simulated photogrammetry setup procedure. In addition, breathing data were acquired by surface acquisition at a frame rate of 7 Hz. Results: Mean 3D displacement was 7.3 mm (SD, 4.4 mm) and 7.6 mm (SD, 4.2 mm) for laser and port film, respectively. Simulated setup with the photogrammetry system yielded mean displacement of 1 mm (SD, 1.2 mm). Distance analysis resulted in mean distances of 3.7 mm (SD, 4.9 mm), 4.3 mm (SD, 5.6 mm), and 1.6 mm (SD, 2.4 mm) for laser, port film, and photogrammetry, respectively. Breathing motion at isocenter was smaller than 3.7 mm, with a mean of 1.9 mm (SD, 1.1 mm). Conclusions: Surface imaging for PBI setup appears promising. Alignment of the 3D breast surface achieved by stereo-photogrammetry shows greater breastmore » topology congruence than when patients are set up by laser or portal imaging. A correlation of breast surface and CTV must be quantitatively established.« less

Authors:
 [1];  [2];  [2];  [2];  [2];  [2]
  1. Abteilung Biophysik, Gesellschaft fuer Schwerionenforschung, Darmstadt (Germany) and Department of Radiation Oncology, Massachusetts General Hospital and Harvard Medical School, Boston, MA (United States). E-mail: c.bert@gsi.de
  2. Department of Radiation Oncology, Massachusetts General Hospital and Harvard Medical School, Boston, MA (United States)
Publication Date:
OSTI Identifier:
20793409
Resource Type:
Journal Article
Resource Relation:
Journal Name: International Journal of Radiation Oncology, Biology and Physics; Journal Volume: 64; Journal Issue: 4; Other Information: DOI: 10.1016/j.ijrobp.2005.11.008; PII: S0360-3016(05)02865-8; Copyright (c) 2006 Elsevier Science B.V., Amsterdam, Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
62 RADIOLOGY AND NUCLEAR MEDICINE; ALIGNMENT; FILMS; IRRADIATION; LASERS; MAMMARY GLANDS; PATIENTS; RADIOTHERAPY; RESPIRATION

Citation Formats

Bert, Christoph, Metheany, Katherine G., Doppke, Karen P., Taghian, Alphonse G., Powell, Simon N., and Chen, George T.Y.. Clinical experience with a 3D surface patient setup system for alignment of partial-breast irradiation patients. United States: N. p., 2006. Web. doi:10.1016/J.IJROBP.2005.1.
Bert, Christoph, Metheany, Katherine G., Doppke, Karen P., Taghian, Alphonse G., Powell, Simon N., & Chen, George T.Y.. Clinical experience with a 3D surface patient setup system for alignment of partial-breast irradiation patients. United States. doi:10.1016/J.IJROBP.2005.1.
Bert, Christoph, Metheany, Katherine G., Doppke, Karen P., Taghian, Alphonse G., Powell, Simon N., and Chen, George T.Y.. Wed . "Clinical experience with a 3D surface patient setup system for alignment of partial-breast irradiation patients". United States. doi:10.1016/J.IJROBP.2005.1.
@article{osti_20793409,
title = {Clinical experience with a 3D surface patient setup system for alignment of partial-breast irradiation patients},
author = {Bert, Christoph and Metheany, Katherine G. and Doppke, Karen P. and Taghian, Alphonse G. and Powell, Simon N. and Chen, George T.Y.},
abstractNote = {Purpose: To assess the utility of surface imaging on patient setup for accelerated partial-breast irradiation (APBI). Methods and Material: A photogrammetry system was used in parallel to APBI setup by laser and portal imaging. Surface data were acquired after laser and port-film setup for 9 patients. Surfaces were analyzed in comparison to a reference surface from the first treatment session by use of rigid transformations. The surface model after laser setup was used in a simulated photogrammetry setup procedure. In addition, breathing data were acquired by surface acquisition at a frame rate of 7 Hz. Results: Mean 3D displacement was 7.3 mm (SD, 4.4 mm) and 7.6 mm (SD, 4.2 mm) for laser and port film, respectively. Simulated setup with the photogrammetry system yielded mean displacement of 1 mm (SD, 1.2 mm). Distance analysis resulted in mean distances of 3.7 mm (SD, 4.9 mm), 4.3 mm (SD, 5.6 mm), and 1.6 mm (SD, 2.4 mm) for laser, port film, and photogrammetry, respectively. Breathing motion at isocenter was smaller than 3.7 mm, with a mean of 1.9 mm (SD, 1.1 mm). Conclusions: Surface imaging for PBI setup appears promising. Alignment of the 3D breast surface achieved by stereo-photogrammetry shows greater breast topology congruence than when patients are set up by laser or portal imaging. A correlation of breast surface and CTV must be quantitatively established.},
doi = {10.1016/J.IJROBP.2005.1},
journal = {International Journal of Radiation Oncology, Biology and Physics},
number = 4,
volume = 64,
place = {United States},
year = {Wed Mar 15 00:00:00 EST 2006},
month = {Wed Mar 15 00:00:00 EST 2006}
}