A New Brain Positron Emission Tomography Scanner With Semiconductor Detectors for Target Volume Delineation and Radiotherapy Treatment Planning in Patients With Nasopharyngeal Carcinoma

Katoh, Norio; Yasuda, Koichi; Shiga, Tohru; Hasegawa, Masakazu; Onimaru, Rikiya; Shimizu, Shinichi; Bengua, Gerard; Ishikawa, Masayori; Tamaki, Nagara; Shirato, Hiroki

doi:10.1016/J.IJROBP.2011.09.011

Title: A New Brain Positron Emission Tomography Scanner With Semiconductor Detectors for Target Volume Delineation and Radiotherapy Treatment Planning in Patients With Nasopharyngeal Carcinoma

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Abstract

Purpose: We compared two treatment planning methods for stereotactic boost for treating nasopharyngeal carcinoma (NPC): the use of conventional whole-body bismuth germanate (BGO) scintillator positron emission tomography (PET{sub CONV}WB) versus the new brain (BR) PET system using semiconductor detectors (PET{sub NEW}BR). Methods and Materials: Twelve patients with NPC were enrolled in this study. [{sup 18}F]Fluorodeoxyglucose-PET images were acquired using both the PET{sub NEW}BR and the PET{sub CONV}WB system on the same day. Computed tomography (CT) and two PET data sets were transferred to a treatment planning system, and the PET{sub CONV}WB and PET{sub NEW}BR images were coregistered with the same set of CT images. Window width and level values for all PET images were fixed at 3000 and 300, respectively. The gross tumor volume (GTV) was visually delineated on PET images by using either PET{sub CONV}WB (GTV{sub CONV}) images or PET{sub NEW}BR (GTV{sub NEW}) images. Assuming a stereotactic radiotherapy boost of 7 ports, the prescribed dose delivered to 95% of the planning target volume (PTV) was set to 2000 cGy in 4 fractions. Results: The average absolute volume ({+-}standard deviation [SD]) of GTV{sub NEW} was 15.7 ml ({+-}9.9) ml, and that of GTV{sub CONV} was 34.0 ({+-}20.5) ml. The averagemore »« less

Authors:

Katoh, Norio ^[1]; Yasuda, Koichi ^[1]; Shiga, Tohru ^[2]; Hasegawa, Masakazu; Onimaru, Rikiya; Shimizu, Shinichi ^[1]; Bengua, Gerard; Ishikawa, Masayori ^[3]; Tamaki, Nagara ^[2]; Shirato, Hiroki ^[1]

Department of Radiation Medicine, Hokkaido University Graduate School of Medicine, Sapporo (Japan)
Department of Nuclear Medicine, Hokkaido University Graduate School of Medicine, Sapporo (Japan)
Department of Medical Physics, Hokkaido University Graduate School of Medicine, Sapporo (Japan)

Publication Date:: Thu Mar 15 00:00:00 EDT 2012

OSTI Identifier:: 22056193

Resource Type:: Journal Article

Journal Name:: International Journal of Radiation Oncology, Biology and Physics

Additional Journal Information:: Journal Volume: 82; Journal Issue: 4; Other Information: Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0360-3016

Country of Publication:: United States

Language:: English

Subject:: 62 RADIOLOGY AND NUCLEAR MEDICINE; BISMUTH COMPOUNDS; CARCINOMAS; CAT SCANNING; CEREBELLUM; CEREBRUM; FLUORINE 18; FLUORODEOXYGLUCOSE; GERMANATES; IMAGES; PATIENTS; PLANNING; POSITRON COMPUTED TOMOGRAPHY; RADIATION DOSES; RADIOTHERAPY; SEMICONDUCTOR DETECTORS

Citation Formats


                    Katoh, Norio, Yasuda, Koichi, Shiga, Tohru, Hasegawa, Masakazu, Onimaru, Rikiya, Shimizu, Shinichi, Bengua, Gerard, Ishikawa, Masayori, Tamaki, Nagara, and Shirato, Hiroki. A New Brain Positron Emission Tomography Scanner With Semiconductor Detectors for Target Volume Delineation and Radiotherapy Treatment Planning in Patients With Nasopharyngeal Carcinoma.  United States: N. p., 2012. 
        Web.  doi:10.1016/J.IJROBP.2011.09.011.

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                    Katoh, Norio, Yasuda, Koichi, Shiga, Tohru, Hasegawa, Masakazu, Onimaru, Rikiya, Shimizu, Shinichi, Bengua, Gerard, Ishikawa, Masayori, Tamaki, Nagara, & Shirato, Hiroki. A New Brain Positron Emission Tomography Scanner With Semiconductor Detectors for Target Volume Delineation and Radiotherapy Treatment Planning in Patients With Nasopharyngeal Carcinoma.  United States.  https://doi.org/10.1016/J.IJROBP.2011.09.011

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                    Katoh, Norio, Yasuda, Koichi, Shiga, Tohru, Hasegawa, Masakazu, Onimaru, Rikiya, Shimizu, Shinichi, Bengua, Gerard, Ishikawa, Masayori, Tamaki, Nagara, and Shirato, Hiroki. 2012.  
        "A New Brain Positron Emission Tomography Scanner With Semiconductor Detectors for Target Volume Delineation and Radiotherapy Treatment Planning in Patients With Nasopharyngeal Carcinoma".  United States.  https://doi.org/10.1016/J.IJROBP.2011.09.011.

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@article{osti_22056193,

  title        = {A New Brain Positron Emission Tomography Scanner With Semiconductor Detectors for Target Volume Delineation and Radiotherapy Treatment Planning in Patients With Nasopharyngeal Carcinoma},

  author       = {Katoh, Norio and Yasuda, Koichi and Shiga, Tohru and Hasegawa, Masakazu and Onimaru, Rikiya and Shimizu, Shinichi and Bengua, Gerard and Ishikawa, Masayori and Tamaki, Nagara and Shirato, Hiroki},

  abstractNote = {Purpose: We compared two treatment planning methods for stereotactic boost for treating nasopharyngeal carcinoma (NPC): the use of conventional whole-body bismuth germanate (BGO) scintillator positron emission tomography (PET{sub CONV}WB) versus the new brain (BR) PET system using semiconductor detectors (PET{sub NEW}BR). Methods and Materials: Twelve patients with NPC were enrolled in this study. [{sup 18}F]Fluorodeoxyglucose-PET images were acquired using both the PET{sub NEW}BR and the PET{sub CONV}WB system on the same day. Computed tomography (CT) and two PET data sets were transferred to a treatment planning system, and the PET{sub CONV}WB and PET{sub NEW}BR images were coregistered with the same set of CT images. Window width and level values for all PET images were fixed at 3000 and 300, respectively. The gross tumor volume (GTV) was visually delineated on PET images by using either PET{sub CONV}WB (GTV{sub CONV}) images or PET{sub NEW}BR (GTV{sub NEW}) images. Assuming a stereotactic radiotherapy boost of 7 ports, the prescribed dose delivered to 95% of the planning target volume (PTV) was set to 2000 cGy in 4 fractions. Results: The average absolute volume ({+-}standard deviation [SD]) of GTV{sub NEW} was 15.7 ml ({+-}9.9) ml, and that of GTV{sub CONV} was 34.0 ({+-}20.5) ml. The average GTV{sub NEW} was significantly smaller than that of GTV{sub CONV} (p = 0.0006). There was no statistically significant difference between the maximum dose (p = 0.0585) and the mean dose (p = 0.2748) of PTV. The radiotherapy treatment plan based on the new gross tumor volume (PLAN{sub NEW}) significantly reduced maximum doses to the cerebrum and cerebellum (p = 0.0418) and to brain stem (p = 0.0041). Conclusion: Results of the present study suggest that the new brain PET system using semiconductor detectors can provide more accurate tumor delineation than the conventional whole-body BGO PET system and may be an important tool for functional and molecular radiotherapy treatment planning.},

  doi          = {10.1016/J.IJROBP.2011.09.011},

  url          = {https://www.osti.gov/biblio/22056193},
  journal      = {International Journal of Radiation Oncology, Biology and Physics},

  issn         = {0360-3016},

  number       = 4,

  volume       = 82,

  place        = {United States},

  year         = {Thu Mar 15 00:00:00 EDT 2012},

  month        = {Thu Mar 15 00:00:00 EDT 2012}

}

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