Large nearly spherical ablation zones are achieved with simultaneous multi-antenna microwave ablation applied to treat liver tumours.
Eur Radiol
; 30(2): 971-975, 2020 Feb.
Article
en En
| MEDLINE
| ID: mdl-31529251
ABSTRACT
AIM:
To investigate the shape and the volume of ablation zones obtained with microwave ablation (MWA) performed with multiple antennas in liver tumours. MATERIALS ANDMETHODS:
Tumour volume, number of antennas, size (long diameter (Dl), along the antenna axis; short diameter (Ds), perpendicular to the antenna axis; vertical diameter (Dv), vertical to both Dl and Ds) and shape (roundness index (RI); 1 corresponds to a sphere) of the ablation zone, ablation volume, and complications were evaluated.RESULTS:
Mean Dl, Ds, and Dv were 4.7 ± 1.4 cm, 3.9 ± 1.4 cm, and 3.8 ± 1.0 cm, respectively. Mean RIs (Ds/Dl, Dv/Dl, and Dv/Ds) were 0.83 ± 0.13, 0.83 ± 0.17, and 1.02 ± 0.23, respectively, without any difference between the mean RI obtained with the double (0.84 ± 0.01) and that with the triple-antenna (0.93 ± 0.13) approach (p = 0.25). Mean ablation volume was 41 ± 32 cm3 (vs. mean tumour volume 13 ± 10 cm3; range 1-40; p < 0.001). No complications were noted.CONCLUSIONS:
Simultaneous multi-antenna MWA of liver tumours results in large nearly spherical ablation zones. KEY POINTS ⢠Simultaneous multi-antenna microwave ablation of liver tumours results in nearly spherical ablation zones. ⢠The multi-antenna approach generates oversized ablation volumes compared with the target tumour volume. ⢠The multi-antenna approach is safe.Palabras clave
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Ablación por Radiofrecuencia
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Neoplasias Hepáticas
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Microondas
Tipo de estudio:
Evaluation_studies
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Observational_studies
Límite:
Aged
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Año:
2020
Tipo del documento:
Article