J 2021

Real-time measurement of ICD lead motion during stereotactic body radiotherapy of ventricular tachycardia

KNYBEL, Lukas, Jakub CVEK, Radek NEUWIRTH, Otakar JIRAVSKÝ, Jan HECKO et. al.

Základní údaje

Originální název

Real-time measurement of ICD lead motion during stereotactic body radiotherapy of ventricular tachycardia

Autoři

KNYBEL, Lukas (203 Česká republika), Jakub CVEK (203 Česká republika, garant), Radek NEUWIRTH (203 Česká republika, domácí), Otakar JIRAVSKÝ (203 Česká republika), Jan HECKO (203 Česká republika), Marek PENHAKER (203 Česká republika), Marek SRAMKO (203 Česká republika) a Josef KAUTZNER (203 Česká republika)

Vydání

Reports of Practical Oncology and Radiotherapy, GDANSK, VIA MEDICA, 2021, 1507-1367

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

30224 Radiology, nuclear medicine and medical imaging

Stát vydavatele

Polsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Kód RIV

RIV/00216224:14110/21:00121087

Organizační jednotka

Lékařská fakulta

UT WoS

000641613400016

Klíčová slova anglicky

ventricular tachycardia; stereotactic body radiotherapy

Štítky

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 21. 4. 2022 10:19, Mgr. Tereza Miškechová

Anotace

V originále

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.