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Clinical relevance of metal artefact reduction in computed tomography (iMAR) in the pelvic and head and neck region: Multi-institutional contouring study of gross tumour volumes and organs at risk on clinical cases

Standard

Clinical relevance of metal artefact reduction in computed tomography (iMAR) in the pelvic and head and neck region: Multi-institutional contouring study of gross tumour volumes and organs at risk on clinical cases. / Hagen, Marius; Kretschmer, Matthias; Würschmidt, Florian; Gauer, Tobias; Giro, Christian; Karsten, Elias; Lorenzen, Jörn.

in: J MED IMAG RADIAT ON, Jahrgang 63, Nr. 6, 12.2019, S. 842-851.

Publikationen: SCORING: Beitrag in Fachzeitschrift/Zeitung › SCORING: Zeitschriftenaufsatz › Forschung › Begutachtung

Harvard

Hagen, M, Kretschmer, M, Würschmidt, F, Gauer, T, Giro, C, Karsten, E & Lorenzen, J 2019, 'Clinical relevance of metal artefact reduction in computed tomography (iMAR) in the pelvic and head and neck region: Multi-institutional contouring study of gross tumour volumes and organs at risk on clinical cases', J MED IMAG RADIAT ON, Jg. 63, Nr. 6, S. 842-851. https://doi.org/10.1111/1754-9485.12924

APA

Hagen, M., Kretschmer, M., Würschmidt, F., Gauer, T., Giro, C., Karsten, E., & Lorenzen, J. (2019). Clinical relevance of metal artefact reduction in computed tomography (iMAR) in the pelvic and head and neck region: Multi-institutional contouring study of gross tumour volumes and organs at risk on clinical cases. J MED IMAG RADIAT ON, 63(6), 842-851. https://doi.org/10.1111/1754-9485.12924

Vancouver

Hagen M, Kretschmer M, Würschmidt F, Gauer T, Giro C, Karsten E et al. Clinical relevance of metal artefact reduction in computed tomography (iMAR) in the pelvic and head and neck region: Multi-institutional contouring study of gross tumour volumes and organs at risk on clinical cases. J MED IMAG RADIAT ON. 2019 Dez;63(6):842-851. https://doi.org/10.1111/1754-9485.12924

Bibtex

@article{78a728362ddd4c648d2a12c4f3a5dfe5,
title = "Clinical relevance of metal artefact reduction in computed tomography (iMAR) in the pelvic and head and neck region: Multi-institutional contouring study of gross tumour volumes and organs at risk on clinical cases",
abstract = "INTRODUCTION: Artefacts caused by dental implants and hip replacements may impede target volume definition and dose calculation accuracy. The iterative metal artefact reduction (iMAR) algorithm can provide a solution for this problem. The present study compares delineation of gross tumour volumes (GTVs) and organs at risk (OARs) in the pelvic and the head and neck (H & N) regions using computed tomography (CT) with and without iMAR, and thus the practical applicability of iMAR for routine clinical use.METHODS: The native planning CT and CT-iMAR data of two typical clinical cases with image-distorting artefacts were used for multi-institutional contouring and analysis using the Dice similarity coefficient (DSC). GTV/OAR contours were compared with an intraobserver approach and compared to predefined reference structures.RESULTS: Mean volume for GTVprostate in the intraobserver approach decreased from 87 ± 44 cm3 (native CT) to 75 ± 22 cm3 (CT-iMAR) (P = 0.168). Compared to the reference, DSC values for GTVProstate increased from 0.68 ± 0.15 to 0.78 ± 0.07 (CT vs. iMAR) (P < 0.05). In the H & N region, the reference for GTVTongue (34 cm3 ) was underestimated on both data sets. No significant improvement in DSC values (0.83 ± 0.06 (native CT) versus 0.86 ± 0.06 (CT-iMAR)) was observed.CONCLUSION: The use of iMAR improves the anatomical delineation at the transition of prostate and bladder in cases of bilateral hip replacement. In the H & N region, anatomical residual structures and experience were apparently sufficient for precise contouring.",
author = "Marius Hagen and Matthias Kretschmer and Florian W{\"u}rschmidt and Tobias Gauer and Christian Giro and Elias Karsten and J{\"o}rn Lorenzen",
note = "{\textcopyright} 2019 The Authors. Journal of Medical Imaging and Radiation Oncology published by John Wiley & Sons Australia, Ltd on behalf of Royal Australian and New Zealand College of Radiologists.",
year = "2019",
month = dec,
doi = "10.1111/1754-9485.12924",
language = "English",
volume = "63",
pages = "842--851",
journal = "J MED IMAG RADIAT ON",
issn = "1754-9477",
publisher = "Wiley-Blackwell",
number = "6",

}

RIS

TY - JOUR

T1 - Clinical relevance of metal artefact reduction in computed tomography (iMAR) in the pelvic and head and neck region: Multi-institutional contouring study of gross tumour volumes and organs at risk on clinical cases

AU - Hagen, Marius

AU - Kretschmer, Matthias

AU - Würschmidt, Florian

AU - Gauer, Tobias

AU - Giro, Christian

AU - Karsten, Elias

AU - Lorenzen, Jörn

N1 - © 2019 The Authors. Journal of Medical Imaging and Radiation Oncology published by John Wiley & Sons Australia, Ltd on behalf of Royal Australian and New Zealand College of Radiologists.

PY - 2019/12

Y1 - 2019/12

N2 - INTRODUCTION: Artefacts caused by dental implants and hip replacements may impede target volume definition and dose calculation accuracy. The iterative metal artefact reduction (iMAR) algorithm can provide a solution for this problem. The present study compares delineation of gross tumour volumes (GTVs) and organs at risk (OARs) in the pelvic and the head and neck (H & N) regions using computed tomography (CT) with and without iMAR, and thus the practical applicability of iMAR for routine clinical use.METHODS: The native planning CT and CT-iMAR data of two typical clinical cases with image-distorting artefacts were used for multi-institutional contouring and analysis using the Dice similarity coefficient (DSC). GTV/OAR contours were compared with an intraobserver approach and compared to predefined reference structures.RESULTS: Mean volume for GTVprostate in the intraobserver approach decreased from 87 ± 44 cm3 (native CT) to 75 ± 22 cm3 (CT-iMAR) (P = 0.168). Compared to the reference, DSC values for GTVProstate increased from 0.68 ± 0.15 to 0.78 ± 0.07 (CT vs. iMAR) (P < 0.05). In the H & N region, the reference for GTVTongue (34 cm3 ) was underestimated on both data sets. No significant improvement in DSC values (0.83 ± 0.06 (native CT) versus 0.86 ± 0.06 (CT-iMAR)) was observed.CONCLUSION: The use of iMAR improves the anatomical delineation at the transition of prostate and bladder in cases of bilateral hip replacement. In the H & N region, anatomical residual structures and experience were apparently sufficient for precise contouring.

AB - INTRODUCTION: Artefacts caused by dental implants and hip replacements may impede target volume definition and dose calculation accuracy. The iterative metal artefact reduction (iMAR) algorithm can provide a solution for this problem. The present study compares delineation of gross tumour volumes (GTVs) and organs at risk (OARs) in the pelvic and the head and neck (H & N) regions using computed tomography (CT) with and without iMAR, and thus the practical applicability of iMAR for routine clinical use.METHODS: The native planning CT and CT-iMAR data of two typical clinical cases with image-distorting artefacts were used for multi-institutional contouring and analysis using the Dice similarity coefficient (DSC). GTV/OAR contours were compared with an intraobserver approach and compared to predefined reference structures.RESULTS: Mean volume for GTVprostate in the intraobserver approach decreased from 87 ± 44 cm3 (native CT) to 75 ± 22 cm3 (CT-iMAR) (P = 0.168). Compared to the reference, DSC values for GTVProstate increased from 0.68 ± 0.15 to 0.78 ± 0.07 (CT vs. iMAR) (P < 0.05). In the H & N region, the reference for GTVTongue (34 cm3 ) was underestimated on both data sets. No significant improvement in DSC values (0.83 ± 0.06 (native CT) versus 0.86 ± 0.06 (CT-iMAR)) was observed.CONCLUSION: The use of iMAR improves the anatomical delineation at the transition of prostate and bladder in cases of bilateral hip replacement. In the H & N region, anatomical residual structures and experience were apparently sufficient for precise contouring.

U2 - 10.1111/1754-9485.12924

DO - 10.1111/1754-9485.12924

M3 - SCORING: Journal article

C2 - 31265214

VL - 63

SP - 842

EP - 851

JO - J MED IMAG RADIAT ON

JF - J MED IMAG RADIAT ON

SN - 1754-9477

IS - 6

ER -