Biophysics of radiofrequency ablation

What is electrophysiological study with radio frequency ablation?
A catheter is placed next to the heart cells that are creating the abnormal electrical signals.
The tip of the catheter sends RF energy to destroy the abnormal cells in that area.
This can bring the heart back to a normal rhythm.
You may feel uncomfortable when the energy is used on the cells in your heart..
What is the mechanism of action of radiofrequency ablation?
Continuous radiofrequency (CRF) exposes the target nerves or tissues to high temperatures (70\xb0C–90\xb0C) via continuous electrical stimulation [16].
Nerves or tissues treated with CRF are ablated [16].
The ablation of targeted nociceptive nerve fibers is thought to be the main mechanism of pain reduction after CRF [16]..
What is the mechanism of radiofrequency ablation?
Technique or Treatment
During conventional radiofrequency technique, once the desired temperature is reached, the current is switched off.
The current is then switched on to maintain the tissue temperature at a predetermined setpoint.
The cycling between on-and-off currents maintains the selected tissue temperature..
Where did radiofrequency ablation originate?
In the mid-1960s, RFA of the anterolateral spinal cord was described by Rosomoff et al. for the treatment of intractable malignant and non-malignant pain [3].
The first dorsal root RFA was described in 1974 [4].
The first described application of RFA for lumbar facetogenic pain occurred in 1975 by Shealy [5]..
A catheter is placed next to the heart cells that are creating the abnormal electrical signals.
The tip of the catheter sends RF energy to destroy the abnormal cells in that area.
This can bring the heart back to a normal rhythm.
You may feel uncomfortable when the energy is used on the cells in your heart.
In RF ablation, the patient is part of a closed-loop circuit that includes an RF generator, an electrode needle and a large dispersive electrode (ground pads).
Technique or Treatment
During conventional radiofrequency technique, once the desired temperature is reached, the current is switched off.
The current is then switched on to maintain the tissue temperature at a predetermined setpoint.
The cycling between on-and-off currents maintains the selected tissue temperature.
The goals of radiofrequency ablation are to: Stop or reduce pain.
Improve function.
Reduce the number of pain medications taken.

During RF ablation, an electrode is inserted into or steered intravascularly to the target tissue region under medical imaging guidance. Then, a tissue volume surrounding the electrode is destroyed by heating via RF electric current.

**Biophysics of radiofrequency ablation**

Overview article

Magnetic resonance imaging (MRI) is in general a safe technique, although injuries may occur as a result of failed safety procedures or human error.
During the last 150 years, thousands of papers focusing on the effects or side effects of magnetic or radiofrequency fields have been published.
They can be categorized as incidental and physiological.
Contraindications to MRI include most cochlear implants and cardiac pacemakers, shrapnel and metallic foreign bodies in the eyes.
The safety of MRI during the first trimester of pregnancy is uncertain, but it may be preferable to other options.
Since MRI does not use any ionizing radiation, its use generally is favored in preference to CT when either modality could yield the same information.

Biophysics of radiofrequency ablation

What is electrophysiological study with radio frequency ablation?

What is the mechanism of action of radiofrequency ablation?

What is the mechanism of radiofrequency ablation?

Where did radiofrequency ablation originate?