Thermometry during coblation and radiofrequency ablation of vertebral metastases: a cadaver study.
Eur Spine J
; 22(6): 1389-93, 2013 Jun.
Article
em En
| MEDLINE
| ID: mdl-23321979
ABSTRACT
PURPOSE:
To evaluate safety of coblation of simulated lytic metastases in human cadaveric vertebral bodies by measuring heat distribution during thermal tissue ablation and comparing it to radiofrequency ablation (RFA). MATERIALS ANDMETHODS:
Three devices were compared a 10 mm single-needle RFA electrode, a 20 mm array RFA electrode and the coblation device. To simulate bone metastases, a spinal tumor model was used stuffing a created lytic cavity with muscle tissue. Measuring of heat distribution was performed during thermal therapy within the vertebral body, in the epidural space and at the ipsilateral neural foramen. Eight vertebral bodies were used for each device.RESULTS:
Temperatures at heat-sensitive neural structures during coblation were significantly lower than using RFA. Maximum temperatures measured at the end of the procedure at the neural foramen 46.4 °C (± 2.51; RFA 10 mm), 52.2 °C (± 5.62; RFA 20 mm) and 42.5 °C (± 2.88; coblation). Maximum temperatures in the epidural space 46.8 °C (± 4.7; RFA 10 mm), 49.5 °C (± 6.48; RFA 20 mm) and 42.1 °C (± 2.5; coblation). Maximum temperatures measured within the vertebral body 50.6 °C (± 10.48; RFA 10 mm), 61.9 °C (± 15.39; RFA 20 mm) and 54.4 °C (± 15.77; coblation).CONCLUSION:
In addition to RFA, the application of coblation is a safe method to ablate vertebral lesions with regards to heat distribution at heat-sensitive neural spots. The measured temperatures did not harbor danger of thermal damage to the spinal cord or the spinal nerves.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Neoplasias da Coluna Vertebral
/
Ablação por Cateter
/
Termometria
Limite:
Humans
Idioma:
En
Ano de publicação:
2013
Tipo de documento:
Article