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[Microwave Medical Applications] Advantages of Microwave Ablation in Lung Cancer

Industry news

2022-10-12 10:01:20



People often talk about cancer in their daily lives. Having cancer can mean the end of life very quickly, but what makes it even more frightening is the suffering it can bring to a person's life. Lung cancer is a malignant tumour that originates in the mucous membrane or glands of the bronchi of the lungs, and has one of the fastest growing incidence and mortality rates, posing the greatest threat to health and life. Over the last 50 years, many countries have reported a significant increase in the incidence and mortality of lung cancer, with men accounting for the highest incidence and mortality of all malignancies and women for the second highest incidence and mortality. Medical experts have also been seeking the most optimal treatment options for lung cancer.

Treatment options for lung cancer include targeted drugs, chemotherapy and surgery. For isolated non-metastatic lung tumours, surgical resection remains the gold standard of treatment. However, many patients cannot be surgically resected due to poor cardiopulmonary function, advanced age and a high number of co-morbidities. For these patients, minimally invasive treatments such as radiofrequency ablation and microwave ablation have become possible alternatives. radiofrequency ablation was first used in animal lung tumour models in 1995, and microwave ablation has been used in tumour treatment since 2000. According to the understanding of Wattsine Microwave Source, microwave ablation has more advantages compared to radiofrequency ablation, the specific advantages are as follows.

1. The energy of microwaves can be applied to a larger area of diseased tissue (animal experiments have demonstrated that the ablation area can be 50% higher than the RF ablation area) and can generate higher temperatures faster than RF ablation to destroy the target tissue. The microwave antenna can be activated at the same time as insertion, thus increasing the area of action.

2. Microwave electromagnetic waves are not limited to the lower thermal conductivity of the lung, or the increased impedance of searing. Microwave energy has also been shown to be effective in treating perivascular tissue and coalescing large blood vessels, even in heat sink attachments to improve thermal effectiveness.

From the comparison of the advantages between the two we can see that the core of microwave ablation lies in the generation of microwave energy, the stability and reliability of microwave energy plays a decisive role in the effectiveness of treatment.

How is microwave energy generated? Microwave energy is usually obtained by passing direct current or 50MHz alternating current through a special device. There are many different types of devices that can generate microwaves, but they fall into two main categories: semiconductor devices and electric vacuum devices. The representative electric vacuum device is the magnetron, the representative product of semiconductor devices is the solid state microwave source, solid state microwave source is a new type of microwave energy generator in recent years in China, it is high stability, high reliability, long life advantages quickly replaced the magnetron in various industries, especially in the medical industry.


At present, microwave ablation of microwave generators supporting the demand is mainly small microwave sources, such as frequency is generally 915/2450MHz, power between 100W-200W solid-state microwave source module is the medical industry demand is most prevalent!

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