• The Korean Journal of Pain
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• 제35권1호
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• pp.114-123
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• 2022

Background: Different views have been proposed on the radiofrequency treatment modes and parameters of radiofrequency thermocoagulation of the spinal dorsal root ganglion for the treatment of postherpetic neuralgia (PHN). It is urgent to identify a more effective therapy for patients with PHN. Methods: Patients who underwent radiofrequency thermocoagulation therapy for PHN were retrospectively reviewed and were divided into a radiofrequency thermocoagulation (CRF) and double neddles radiofrequency thermocoagulation (DCRF). The pain scores (numerical rating scale, NRS) were evaluated at the following time points: before the operation, 1 day, 3 months, 6 months, 1 year, and 2 years after operation. The incidence of complications and the degree of pain relief were evaluated. The in vitro ovalbumin experiment was used to indicate the effects of radiofrequency thermocoagulation. Results: Compared with the preoperative NRS scores, the postoperative NRS scores decreased significantly; the NRS scores of the DCRF group was lower than that of the CRF group at all time points from 6 months to 2 years following the operation. The total effective rate of the DCRF group was significantly higher than that of the CRF group at 2 years following the operation. The incidence of numbness in the DCRF group was higher than that noted in the CRF group. The ovalbumin experiments in vitro indicated that the effects of radiofrequency thermocoagulation were optimal when the distance between the two needles was 5 mm. Conclusions: DCRF with a 5 mm spacing exhibits a longer duration and higher effective rate in the treatment of PHN and is worth promoting.

• The Korean Journal of Pain
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• 제4권2호
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• pp.196-199
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• 1991

Efforts from many different approaches have been made to manage malignant sacral pain that commonly occurs in cancers from pelvic origin. Radiofrequency thermocoagulation provides a safe method of achieving long standing relief of intractable pain without some of the objectable side effects associated with other forms of chemical or surgical therapy. Radiofrequency sacral rhizotomy is a new method for the relief of the sacrococcygeal pain. We report a case in which we managed a patient with malignant sacrococcygeal pain with radiofrequency thermocoagulation.

• Journal of Korean Neurosurgical Society
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• 제58권1호
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• pp.89-92
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• 2015

Rheumatoid arthritis (RA) is a chronic inflammatory disease involving multiple joints. The cervical spine is often affected, and cases involving atlantoaxial joint can lead to instability. Anterior atlantoaxial subluxation in RA patients can lead to posterior neck pain or occipital headache because of compression of the C2 ganglion or nerve. Here, we report the successful treatment of a RA patient with occipital radiating headache using pulsed radiofrequency therapy at the C2 dorsal root ganglion.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제32권3호
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• pp.242-245
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• 2010

Pierre Robin sequence (PRS) describes the clinical triad of micro- and/or retrognathia, glossoptosis and cleft soft palate. Glossopexy has been demonstrated to be an effective treatment in selected cases of obstruction caused by glossoptosis (generally 6 to 10 months of glossopexy period). If radiofrequency therapy (RF) can reduce tongue volume in PRS, it will be helpful in early releasing of the glossopexy. Two-dayold patient showed a PRS triad. Intermittent cyanosis, respiratory difficulty and feeding problems were also observed. The respiration was not improved and prolonged intubation increased the possibility of respiratory complications like pneumonia. The surgical intervention- glossopexy and RF was done 20 days after birth. We applied RF combined with conventional glossopexy and could get successful results while reducing the overall treatment time to 6 weeks. The follow-up until 12 months after birth was uneventful. Considering that early recovery is highly beneficial to PRS patients by reducing risks associated with glossopexy and low energy RF application is very simple and low risk to patient, our combination therapy should be considered for the treatment of airway problem related to PRS.

• 대한골관절종양학회지
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• 제8권3호
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• pp.83-89
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• 2002

목적: 유골골종의 진단 후 경피적 고주파 열 치료를 시행한 환자에서 수술 후 기능적 결과 및 방사선학적인 추시 결과를 분석하고자 하였다. 대상 및 방법: 본 연구는 1999년 7월부터 2001년 1월 사이에 임상소견 및 방사선 소견상 유골골종으로 진단 받고 저자들이 경피적 고주파 열 치료를 시행한 7명의 환자를 대상으로 하였으며 추시 기간은 최소 8개월에서 최장 2년 1개월로 평균 15.5개월이었다. 술 전 방사선학적 검사로는 단순방사선촬영, 전산화단층촬영, 자기공명영상이 진단 및 병소의 정확한 위치파악을 위하여 이용되었으며 술 후에는 정기적인 단순방사선 사진 및 자기공명영상으로 추적관찰 하였다. 결과: 술 후 환자의 증상 소실은 7례의 환자에서 3일 이내에 완전 소실이 이루어 졌으며 평균 입원 기간은 1례의 화상이 발생한 환자를 제외하고는 평균 2.4일 이었고 퇴원의 기준은 환자의 동통이 완전 소실된 이후로 하였다. 술 후 야간통 및 주간통 점수는 각각 평균 1.8점과 1.3점으로 이었다. 직업 활동 및 여가 활동의 점수도 각각 평균 1점과 0.6점이었다. 결론: 유골골종에 대하여 경피적 고주파 열 치료로 비교적 만족할 만한 기능적 결과를 얻었다. 이 시술은 기존의 고식적 방법으로 인한 입원기간의 증가, 술 후 골절 방지를 위한 내고정술 및 뼈 이식의 필요, 그리고 장기간의 고정으로 인한 관절운동의 장애 등의 합병증 없이 유골골종의 제거에 효과적인 방법으로 사료된다.

• Asian Pacific Journal of Cancer Prevention
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• 제15권5호
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• pp.2359-2362
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• 2014

Background: To investigate the effects of double radiofrequency hyperthermia on Th1/Th2 cells in esophageal cancer patients treated with radiotherapy. Materials and Methods: 22 patients with esophageal cancer were divided into a radiotherapy group (10 cases) and a combined group (double radiofrequency hyperthermia combined with radiotherapy group, 12 cases). Both groups received conventional radiotherapy using a cobalt-60 therapy apparatus (TD60-66Gy/30-33F). Patients in the combined group also underwent double radiofrequency hyperthermia (2F/W, 8-10F). Before and after treatment, Th1, Th2, Tc1 and Tc2 cells in peripheral blood were determined with flow cytometry. Results: In the radiotherapy group, Th1 cell contents before and after radiotherapy were $17.5{\pm}5.26%$ and $9.69{\pm}4.86%$, respectively, with a significant difference (p<0.01). The Th1/Th2 ratio was significantly decreased from $28.2{\pm}14.3$ to $16.5{\pm}10.4 $(p<0.01). In the combined group, Th1 cell content before radiotherapy was $15.9{\pm}8.18%$, and it increased to $18.6{\pm}8.84$ after radiotherapy (p>0.05), the Th1/Th2 ratio decreasing from $38.4{\pm}36.3$ to $28.1{\pm}24.0$ (p>0.05). Changes in Th2, Tc1 and Tc2 cell levels were not significant in the two groups before and after therapy (p>0.05). Conclusions: Double radiofrequency hyperthermia can promote the conversion from Th2 to Th1 cells, and regulate the balance of Th1/Th2 cells.

• 대한의용생체공학회:의공학회지
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• 제38권6호
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• pp.285-290
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• 2017

Radiofrequency catheter ablation is the interventional therapy that be employed to eliminate cardiac tissue caused by arrhythmias. During radiofrequency catheter ablation, The thrombus can occur at electrode tip if the temperature of tissue and electrode is excess $100^{\circ}C$. To prevent this phenomenon, we investigated numerical model of electrode for radiofrequency catheter ablation considering saline irrigation and temperature-controlled radiofrequency system. The numerical model is based on coupled electric-thermal-flow problem and solved by COMSOL Multiphysics software. The results of the models show that the dimensions of the thermal lesion are increased if the flow rate of the saline irrigation and the set temperature are increased. The surface width characterized to determine the thermal lesion isn't need to measure in temperature-controlled radiofrequency system due to convective heat transfer by saline irrigation at tissue-electrode interface.

• The Korean Journal of Pain
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• 제36권4호
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• pp.481-481
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• 2023

• The Korean Journal of Pain
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• 제11권2호
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• pp.302-306
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• 1998

The authors report the result achieved in the treatment of trigeminal neuralgia patient, especially V2 involved patient, using radiofrequency (RF) thermocoagulation of Gasserian ganglion. A 62-year old female patient had severe burning pain on right cheek usually initiating from upper molar teeth area for 10 years. She was treated with microvascular decompression operation 10 years ago. However, there was no pain relief by operation. She wanted non-surgical treatment. Therefore, we recommended RF thermocoagulation therapy. After 2 times of RF thermocoagulation, there was excellent pain relief without complications. And, for 6months follow-up, there were no pain, and no evidences of complication and recurrence.

• The Korean Journal of Pain
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• 제18권1호
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• pp.92-95
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• 2005

Primary hyperhidrosis, a disorder of unknown etiology, is characterized by excessive uncontrollable sweating, most often of the palm surface of the hands, armpits, groin and feet. To decrease the symptoms of hyperhidrosis, drug therapy, iontophoresis, excision of axillary sweat glands and thoracoscopic sympathectomy have been attempted. A lumbar sympathectomy is one of the available choices for the treatment hyperhidrosis of the lower extremities. A 28-year old female patient presented with excessive sweating of her hands and feet. For the treatment of her foot hyperhidrosis, a bipolar radiofrequency ablation system was used to ablate the lumbar sympathetic ganglion, with a successful result. This modality will receive greater attention as an available alternative to lumbar sympathetic neurolysis.