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@article{1737836,
author = {Knybel, Lukas and Cvek, Jakub and Neuwirth, Radek and Jiravský, Otakar and Hecko, Jan and Penhaker, Marek and Sramko, Marek and Kautzner, Josef},
article_location = {GDANSK},
article_number = {1},
doi = {http://dx.doi.org/10.5603/RPOR.a2021.0020},
keywords = {ventricular tachycardia; stereotactic body radiotherapy},
language = {eng},
issn = {1507-1367},
journal = {Reports of Practical Oncology and Radiotherapy},
title = {Real-time measurement of ICD lead motion during stereotactic body radiotherapy of ventricular tachycardia},
url = {https://journals.viamedica.pl/rpor/article/view/72851},
volume = {26},
year = {2021}
}
TY - JOUR
ID - 1737836
AU - Knybel, Lukas - Cvek, Jakub - Neuwirth, Radek - Jiravský, Otakar - Hecko, Jan - Penhaker, Marek - Sramko, Marek - Kautzner, Josef
PY - 2021
TI - Real-time measurement of ICD lead motion during stereotactic body radiotherapy of ventricular tachycardia
JF - Reports of Practical Oncology and Radiotherapy
VL - 26
IS - 1
SP - 128-137
EP - 128-137
PB - VIA MEDICA
SN - 15071367
KW - ventricular tachycardia
KW - stereotactic body radiotherapy
UR - https://journals.viamedica.pl/rpor/article/view/72851
N2 - Background: Here we aimed to evaluate the respiratory and cardiac-induced motion of a ICD lead used as surrogate in the heart during stereotactic body radiotherapy (SBRT) of ventricular tachycardia (VT). Data provides insight regarding motion and motion variations during treatment. Materials and methods: We analyzed the log files of surrogate motion during SBRT of ventricular tachycardia performed in 20 patients. Evaluated parameters included the ICD lead motion amplitudes; intrafraction amplitude variability; correlation error between the ICD lead and external markers; and margin expansion in the superior-inferior (SI), latero-lateral (LL), and anterior-posterior (AP) directions to cover 90% or 95% of all amplitudes. Results: In the SI, LL, and AP directions, respectively, the mean motion amplitudes were 5.0 +/- 2.6, 3.4. +/- 1.9, and 3.1 +/- 1.6 mm. The mean intrafraction amplitude variability was 2.6 +/- 0.9, 1.9 +/- 1.3, and 1.6 +/- 0.8 mm in the SI, LL, and AP directions, respectively. The margins required to cover 95% of ICD lead motion amplitudes were 9.5, 6.7, and 5.5 mm in the SI, LL, and AP directions, respectively. The mean correlation error was 2.2 +/- 0.9 mm. Conclusions: Data from online tracking indicated motion irregularities and correlation errors, necessitating an increased CTV-PTV margin of 3 mm. In 35% of cases, the motion variability exceeded 3 mm in one or more directions. We recommend verifying the correlation between CTV and surrogate individually for every patient, especially for targets with posterobasal localization where we observed the highest difference between the lead and CTV motion.
ER -
KNYBEL, Lukas, Jakub CVEK, Radek NEUWIRTH, Otakar JIRAVSKÝ, Jan HECKO, Marek PENHAKER, Marek SRAMKO and Josef KAUTZNER. Real-time measurement of ICD lead motion during stereotactic body radiotherapy of ventricular tachycardia. \textit{Reports of Practical Oncology and Radiotherapy}. GDANSK: VIA MEDICA, 2021, vol.~26, No~1, p.~128-137. ISSN~1507-1367. Available from: https://dx.doi.org/10.5603/RPOR.a2021.0020.
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