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Thyroid nodules, a common endocrine tumor, have shown a significant increase in incidence globally. The total incidence rate of thyroid nodules worldwide is about 25% from 2000 to 2022, of which the incidence of malignant thyroid nodules is 4.0% to 6.5%. In recent years, the application of thermal ablation technology in the treatment of thyroid nodules has been steadily increasing, with broader indications and fewer contraindications. Thermal ablation techniques have been widely applied in the treatment of benign thyroid nodules. Studies have demonstrated that radiofrequency ablation (RFA) and microwave ablation (MWA) significantly reduce nodule volume and alleviate symptoms. For retrosternal thyroid nodules, the post-treatment volume reduction rate exceeds 90%. For calcified benign nodules, a five-year follow-up showed an average volume reduction rate of 92.95%. Studies on follicular tumors indicated that more than half of the nodules achieved a 90%-volume reduction one year after thermal ablation, with a low incidence of complications in the treatment group. In the treatment of malignant thyroid tumors, thermal ablation has shown promising results in T1aN0M0 solitary low-risk papillary thyroid microcarcinoma (PTMC), with a disease progression rate as low as 3.6%. For T1bN0M0-T2N0M0 primary solitary papillary thyroid carcinoma (PTC), the prognosis following thermal ablation is comparable to surgery, with a lower incidence of complications. In patients with multifocal PTC, the success rate of thermal ablation was 100%, with a low rate of local tumor progression during follow-up. For PTMC located in the isthmus, adjacent to the trachea, or close to the thyroid capsule, thermal ablation demonstrated similar efficacy to surgery, with lower rates of complications and recurrence. This review summarizes the current indications of thermal ablation technology in the treatment of thyroid nodules and provides a reference for clinical applications.

Thermal ablations are rapidly developing techniques for minimally invasive treatment, including laser ablation, radiofrequency ablation, and microwave ablation. Such remarkable success has been achieved in treatment malignant neoplasms, for instance, hepatocellular carcinoma and renal cell adenocarcinoma. In recent years, the practice has been gradually adopted into the treatment of papillary thyroid microcarcinoma (PTMC). Many reports have stated that thermal ablations have distinctive advantages over traditional thyroidectomy owing to its efficacy and safety for treatment primary PTMC, meanwhile there are many controversial issues which hotly debated regarding to first-line treatments. Recently, indications and contraindications of thermal ablation for PTMC have been successively proposed by guidelines and consensuses. Many follow-up reports related to thermal ablation in the treatment of PTMC have been reported in clinical practice as well. In this review, we summarized the principles, indications and contraindications, and the efficacy and safety of thermal ablation in the treatment of PTMC, and compared it with traditional surgery.

Magnetic resonance-guided focused ultrasound（MRgFUS） is an emerging minimally invasive neuromodulation technique, offering notable advantages such as non-invasiveness, avoidance of general anesthesia, real-time target localization, and continuous magnetic resonance imaging-based temperature monitoring. Since the approval by the U.S. Food and Drug Administration in 2016 for the treatment of drug-resistant essential tremor through MRgFUS thalamotomy, this technology has witnessed a growing number of clinical trials exploring new indications, including Parkinson’s disease, other tremor-related disorders, and psychiatric conditions. Simultaneously, the progress in neuroimaging has greatly contributed to the successful application of MRgFUS. It has played a crucial role in personalized target localization and deepening our understanding of the mechanisms behind neuromodulation. This article summarizes the clinical advancements of MRgFUS in central nervous system disorders and underscores the pivotal role of neuroimaging, providing novel avenues for research in neuromodulation techniques. [ABSTRACT FROM AUTHOR]

Since 2000, ultrasonography-guided thermal ablation has been widely applied in treating benign thyroid nodule(BTN). However, considering complicated structures of thyroid gland and its surrounding tissues，various complications （such as voice change and hematoma）have been reported and attracted clinical attention. Intraoperative complications encountered in thermal ablation of BTN comprises of nerve (including the recurrent laryngeal nerve, sympathetic nerve and brachial plexus nerve) injury, vascular injury, skin burn and surrounding tissue burn, while postoperative complications mainly include nodule rupture, liquefactive necrosis and abnormal thyroid function. Among intraoperative complications, nerve injury is characterized by vocal changes, which is the most common complication. In the treatment of BTN using radiofrequency ablation and microwave ablation, occurrence rate of vocal changes is 0.4% to 8.1%. Other nerve complications include Horner's syndrome and brachial plexus injury. Vascular injury manifests as bleeding and hematoma; Burns to surrounding tissues include skin burns, tracheal burns, and esophageal burns. Postoperative complications include nodule rupture and abnormal thyroid function.Nodule rupture often occurs 1 week to 6 months after surgery. Liquefactive necrosis is a rare change after BTN using thermal ablation surgery. Abnormal thyroid function includes hypothyroidism and hyperthyroidism. This article reviews the manifestations of complications during and after ultrasound-guided thermal ablation of BTN, providing reference for diagnosis and treatment of complications.

Oligometastasis can be regarded as a transition state between early metastasis and extensive metastasis (limited tumor load, unique tumor biological behavior). Due to the relatively limited number of metastatic foci and the number of affected organs, there is a potential chance of cure after active systemic and local treatment. With the rapid development of molecular targeted drug therapy and immunotherapy, local therapy for oligometastatic non-small cell lung cancer (NSCLC), including oligorecurrence and oligoprogression, has received increasing attention. In this paper, the relevant research, efficacy, influencing factors, safety and indications of local therapy such as surgery and thermal ablation were discussed.

Copyright of Chinese Medical Equipment Journal is the property of Chinese Medical Equipment Journal Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Medical Equipment Journal is the property of Chinese Medical Equipment Journal Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Recent studies have shown that tumor immune microenvironment is closely related to tumor progression, metastasis, recurrence and response to treatment. Some immunotherapies also offer hope for cancer patients. However, the efficacy of tumor immunotherapy is uncertain and has some side effects. In order to enhance its efficacy, tumor immunotherapy combined with tumor thermal ablation has been studied. Thermal ablation has the advantages of minimally invasive, rapid recovery, safety, fewer complications, conformation, reliable effect, repeatable, low cost, and has become the fourth tumor treatment measure after surgery, radiotherapy, and drug therapy. It can directly kill tumor cells and modulate the immune system through a variety of mechanisms, although the corresponding mechanisms are not well understood, but combined tumor immunotherapy has been proposed to treat several solid malignancies. In this review, the current status and progress of thermal ablation combined with immunotherapy for lung tumor were reviewed, and further studies on the efficacy and safety of thermal ablation combined with immunotherapy were expected.

Copyright of Practical Oncology Journal is the property of Journal of Practical Oncology Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

“The Expert Group on Tumor Ablation Therapy of Chinese Medical Doctor Association, The Tumor Ablation Committee of Chinese College of Interventionalists, The Society of Tumor Ablation Therapy of Chinese Anti-Cancer Association and The Ablation Expert Committee of the Chinese Society of Clinical Oncology” have organized multidisciplinary experts to formulate the consensus for thermal ablation of pulmonary subsolid nodules or ground-glass nodule (GGN). The expert consensus reviews current literatures and provides clinical practices for thermal ablation of GGN. The main contents include: (1) clinical evaluation of GGN, (2) procedures, indications, contraindications, outcomes evaluation and related complications of thermal ablation for GGN and (3) future development directions.

When the high-speed train starts to raise the bow at the station, the cars themselves are in a stationary state. At this time, arc generated by the air breakdown between the pantograph and the contact network (referred to as "bow network") may stay for a long time to ablate the contact wire, the thermal erosion of the arc may seriously affect the service performance of the contact wire, and, in serious cases, may even break the contact wire. Therefore, the study of temperature distribution characteristics of the contact wire in the process of arcing caused by bow raising is of great significance to reduce the ablation of the contact wire on account of the arc. This paper uses the four electromagnetic thermal laminar flow modules of COMSOL multi-physics field simulation software to establish a two-dimensional axisymmetric arc dynamic model, based on the bow network arc burning MHD (magnetohydrodynamics) simulation model, and employs the dynamic grid technology to simulate arc burning process. The effect of speed on the arc characteristics and the temperature field of the contact wire is studied. Simulation and experimental results find that: the arc length decreases continuously during the bow raising process, and the high temperature arc area shrinks gradually; the arc pressure is influenced by the bow raising speed; the bow raising speed can effectively reduce the maximum temperature of the contact wire and the arc burning time, which can reduce the material erosion of the contact wire by arc heat. [ABSTRACT FROM AUTHOR]

Non-small cell lung cancer (NSCLC) is the most common pathological type of primary lung cancer. Currently, main treatment approaches for NSCLC patients include surgical resection, radiotherapy, chemotherapy, targeted therapy and so on. In recent years, thermal ablation has received increasing attention in the treatment of various stages of NSCLC. As a safe and efficient local treatment, thermal ablation may bring potential clinical benefits to NSCLC patients. However, many issues remain unsolved and further investigation is needed in the clinical application of thermal ablation in NSCLC. In this review, we aim to summarize the applications of thermal ablation in NSCLC and further discuss the emerging controversies as well as future research directions.

Objective: To investigate the spatial distribution pattern of local tumor progression (LTP) for hepatocellular carcinoma (HCC) ≤5 cm after microwave ablation. Methods: A retrospective analysis was performed on 169 HCCs with matched MRI before and after ablation from December 2009 to December 2019. A tumor MRI was reconstructed using three-dimensional visualization technology. LTP was classified as contact or non-contact, early or late stage, according to whether LTP was in contact with the edge of the ablation zone and the occurrence time (24 months). The tumor-surrounded area was divided into eight quadrants by using the eight-quadrant map method. An analysis was conducted on the spatial correlation between the quadrant where the ablative margin (AM) safety boundary was located and the quadrant where different types of LTP occurred. The t-test, or rank-sum test, was used for the measurement data. 2-test for count data was used to compare the difference between the two groups. Results: The AM quadrant had a distribution of 54.4% LTP, 64.2% early LTP stage, and 69.1% contact LTP, suggesting this quadrant was much more concentrated than the other quadrants ( P  < 0.001). Additionally, the AM quadrant had only 15.2% of non-contact type LTP and 17.1% of late LTP, which was not significantly different from the average distribution probability of 12.5% (100/8%) among the eight quadrants ( P = 0.667, 0.743). 46.6% of early contact type LTP was located at the ablation needle tip, 25.2% at the body, and 28.1% at the caudal, while the location distribution probabilities of non-early contact LTP were 34.8%, 31.8%, and 33.3%, respectively. Conclusion: LTP mostly occurs in areas where the ablation safety boundary is the shortest. However, non-contact LTP and late LTP stages exhibit the feature of uniform distribution. Thus, this type of LPT may result from an inadequate non-ablation safety boundary.

Copyright of Journal of Beijing University of Technology is the property of Journal of Beijing University of Technology, Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Medical Equipment Journal is the property of Chinese Medical Equipment Journal Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Oligometastasis can be regarded as a transition state between early metastasis and extensive metastasis (limited tumor load, unique tumor biological behavior). Due to the relatively limited number of metastatic foci and the number of affected organs, there is a potential chance of cure after active systemic and local treatment. With the rapid development of molecular targeted drug therapy and immunotherapy, local therapy for oligometastatic non-small cell lung cancer (NSCLC), including oligorecurrence and oligoprogression, has received increasing attention. In this paper, the relevant research, efficacy, influencing factors, safety and indications of local therapy such as surgery and thermal ablation were discussed.
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Objective: To compare the treatment efficacy of thermal ablation versus surgical resection of metachronous colorectal liver metastasis (CRLM) and to explore the potential candidates suited for thermal ablation., Methods: The data of 319 patients with CRLM who underwent radical treatment at the Cancer Hospital, Chinese Academy of Medical Sciences between November 2007 and January 2021 were retrospectively collected. The patients were divided into two groups, the thermal ablation group and the surgical resection group, according to the actual treatments they received. Propensity score matching (PSM) was applied to balance the baseline characteristics between the two groups. Cox regression analysis was conducted to identify the risk factors for recurrence and survival. Survival analysis was performed for intergroup comparison., Results: Using PSM at 1∶1 ratio, 92 patients were included in the thermal ablation group and 92 patients were included in the surgical resection group.The median overall survival (OS) in the thermal ablation group was 49 (95% confidence interval, 37-76) months, which was shorter than that of the surgical resection group ( P <0.01). Multivariate Cox regression analysis indicated that the T staging of primary tumor, number of metastatic tumor, maximum diameter of metastatic tumor, preoperative serum carcinoembryonic antigen (CEA) level, and treatment method were independent risk factors affecting OS. Compared with the surgical resection group, the thermal ablation group demonstrated higher hepatic recurrence rate (59.8% vs. 23.9%, P <0.01), shorter disease-free survival (DFS) (10 months vs. 33 months, P <0.01), and shorter length of hospital stay (7 days vs. 14 days, P <0.01). Subgroup analysis, conducted with the data of the 319 patients before PSM, showed that early recurrence patients who underwent thermal ablation or surgical resection had comparable median OS (29 months vs. 42 months, P =0.35). For the non-early recurrence patients, the median OS of the thermal ablation group was shorter than that of the surgical resection group ( P <0.01)., Conclusion: For the treatment of CRLM, the efficacy of surgical resection was better than that of thermal ablation. However, the efficacy was comparable between the two treatments for early recurrence patients of CRLM., (Copyright© by Editorial Board of Journal of Sichuan University (Medical Sciences).)

Recent studies have shown that tumor immune microenvironment is closely related to tumor progression, metastasis, recurrence and response to treatment. Some immunotherapies also offer hope for cancer patients. However, the efficacy of tumor immunotherapy is uncertain and has some side effects. In order to enhance its efficacy, tumor immunotherapy combined with tumor thermal ablation has been studied. Thermal ablation has the advantages of minimally invasive, rapid recovery, safety, fewer complications, conformation, reliable effect, repeatable, low cost, and has become the fourth tumor treatment measure after surgery, radiotherapy, and drug therapy. It can directly kill tumor cells and modulate the immune system through a variety of mechanisms, although the corresponding mechanisms are not well understood, but combined tumor immunotherapy has been proposed to treat several solid malignancies. In this review, the current status and progress of thermal ablation combined with immunotherapy for lung tumor were reviewed, and further studies on the efficacy and safety of thermal ablation combined with immunotherapy were expected.
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The temperature dependence of relative permittivity and conductivity of ex-vivo pig liver, lung and heart at 2 450 MHz was studied. The relative permittivity and conductivity of three kinds of biological tissues were measured by the open-end coaxial line method. The dielectric model was fitted according to the principle of least square method. The results showed that the relative permittivity and conductivity of pig liver, pig lung and pig heart decreased with the increase of tissue temperature from 20 to 80 ℃. The relative permittivity and conductivity models of pig liver, pig lung and pig heart were established to reflect the law of dielectric properties of biological tissue changing with temperature and provide a reference for the parameters setting of thermal ablation temperature field.

Thermal ablation ranks along with surgical resection and liver transplantation as a major radical treatment for liver tumor, and more and more attention has been paid to its efficacy and minimal invasiveness. However, the majority of Chinese patients who need ablation treatment have poor liver function, so the treatment is challenging, with a high recurrence rate. That has a negative impact on the efficacy and application of this technique. The principle and strategy of standardized image - guided thermal ablation in the treatment of liver tumor were briefly reviewed, with the aim of improving the efficacy and safety of this technique. [ABSTRACT FROM AUTHOR]

Image - guided local thermal ablation plays an increasingly important role in the treatment of live cancer, and the safety of this therapy deserves some attention. The major complications of thermal ablation include bleeding, biliary complications, gastrointestinal perforation, infection, thoracic and diaphragmatic complications, etc. Any maaor complication may significantly arffect the quality of life after treatment and even lead to death. Therefore, identifying the cause of each complication and mastering preventive measures and treatment methods are crucial to reducing maaor complications of thermal ablation. [ABSTRACT FROM AUTHOR]

"The Expert Group on Tumor Ablation Therapy of Chinese Medical Doctor Association, The Tumor Ablation Committee of Chinese College of Interventionalists, The Society of Tumor Ablation Therapy of Chinese Anti-Cancer Association and The Ablation Expert Committee of the Chinese Society of Clinical Oncology" have organized multidisciplinary experts to formulate the consensus for thermal ablation of pulmonary subsolid nodules or ground-glass nodule (GGN). The expert consensus reviews current literatures and provides clinical practices for thermal ablation of GGN. The main contents include: (1) clinical evaluation of GGN, (2) procedures, indications, contraindications, outcomes evaluation and related complications of thermal ablation for GGN and (3) future development directions.
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The methods of monitoring the thermal ablation of tumor are compared and analyzed in recent years. The principle method results and insufficient of ultrasound elastography and quantitative ultrasound imaging are discussed. The results show that ultrasonic tissue signature has great development space in the field of real-time monitoring of thermal ablation, but there are still some problems such as insufficient monitoring accuracy difficulty in whole-course monitoring and insufficient in vivo experiments, so it is impossible to realize clinical application. It is necessary to further study the monitoring method which can realize accurate and real-time detection of ablation zone and transition zone and can be easily combined with the existing ultrasonic equipment.

Non-small cell lung cancer (NSCLC) is the most common pathological type of primary lung cancer. Currently, main treatment approaches for NSCLC patients include surgical resection, radiotherapy, chemotherapy, targeted therapy and so on. In recent years, thermal ablation has received increasing attention in the treatment of various stages of NSCLC. As a safe and efficient local treatment, thermal ablation may bring potential clinical benefits to NSCLC patients. However, many issues remain unsolved and further investigation is needed in the clinical application of thermal ablation in NSCLC. In this review, we aim to summarize the applications of thermal ablation in NSCLC and further discuss the emerging controversies as well as future research directions.