Real-Time Measurement of ICD Lead Motion During Stereotactic Body Radiotherapy of Ventricular Tachycardia

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27240%2F20%3A10246644" target="_blank" >RIV/61989100:27240/20:10246644 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.redjournal.org/article/S0360-3016(20)32120-9/fulltext" target="_blank" >https://www.redjournal.org/article/S0360-3016(20)32120-9/fulltext</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5603/RPOR.a2021.0020" target="_blank" >10.5603/RPOR.a2021.0020</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Real-Time Measurement of ICD Lead Motion During Stereotactic Body Radiotherapy of Ventricular Tachycardia

Popis výsledku v původním jazyce

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. Material 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 atient, especially for targets with posterobasal localization where we observed the highest difference between the lead and CTV motion.

Název v anglickém jazyce

Real-Time Measurement of ICD Lead Motion During Stereotactic Body Radiotherapy of Ventricular Tachycardia

Popis výsledku anglicky

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. Material 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 atient, especially for targets with posterobasal localization where we observed the highest difference between the lead and CTV motion.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20601 - Medical engineering

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

International Journal of Radiation Oncology Biology Physics

ISSN

0360-3016

e-ISSN

—

Svazek periodika

108

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

18

Strana od-do

"E293"

Kód UT WoS článku

000582521501121

EID výsledku v databázi Scopus

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