• Journal of the Korean Society of Radiology
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• v.6 no.5
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• pp.395-402
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• 2012

4D-Radiation Therapy is the optimal treatment to track moving organs(tumor) and give the appropriate prescription dose to tumor and low radiation dose to normal tissue surrounding tumor volume. The ABCHES is a 4DRT devices maintaining shallow breathing to patients. It allows the tumor's movement was minimize. Meanwhile, Abdominal compression device is limited the breath compressing abdomen on patients. In this paper we will quantitative analysis the movement of tumor on only ABCHES versus ABCHES with Abdomal compression device and Analysis tumor dose and normal tissue's dose by Dose Volume Histogram on two parts. The result of Comparision ABCHES and ABCHES with Abdominal compression device, SI(Superior-Inferior) direction, AP(Anterior-Posterior) direction and LR(Left-Right) direction was limited 1.0 mm, 0.2 mm, 0.2 mm(average). and also reduction rate of voluume in HPTV was $16{\pm}2%$, and LPTV was $15.8{\pm}0.8%$ under only using ABCHES and ABCHES with compression. The analysis dose volume histogram was more radiation dose in ABCHES and abdominal compression device than only using ABCHES, and less normal tissue-ipsilateral lung, whole lung, kidney-dose in ABCHES and abdominal compression device than only using ABCHES. The overall analysis was ABCHES with abdominal compression better than only using ABCHES method. In hereafter it will be studies that limitation of ABCHES and abdomonal compression device. In other words, patient's discomfort on compression intensity, method of application on patient with inaccurate respiration cycle.

• Progress in Medical Physics
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• v.15 no.4
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• pp.179-185
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• 2004

To deal with tumor motion from respiration is one of the important issues for the advanced treatment techniques, such as the intensity modulated radiation therapy (IMRT), the image guided radiation therapy (IGRT), the three dimensional conformal therapy (3D-CRT) and the Cyber Knife. Studies including the active breath control (ABC) and the gated radiation therapy have been reported. Authors have developed the device for reducing the respiration effects and the diaphragm motions with this device were observed to determined the effectiveness of the device. The device consists of four belts to immobilize diaphragm motion and the vacuum cushion. Diaphragm motions without and with device were monitored fluoroscopically. Diaphragm motion ranges were found to be 1.14 ～ 3.14 cm (average 2.14 cm) without the device and 0.72～1.95 cm (average 1.16 cm) with the device. The motion ranges were decreased 20 ～ 68.4% (average 44.9%.) However, the respiration cycle was increased from 4.4 seconds to 3.7 seconds. The CTV-PTV margin could be decreased significantly with the device developed in this study, which may be applied to the treatments of the tumor sited diaphragm region.

• Korean Journal of Clinical Laboratory Science
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• v.52 no.3
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• pp.278-283
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• 2020

Central sleep apnea (CSA) is characterized by respiratory failure of at least 10 seconds without any effort of the chest and abdomen in the absence of upper airway resistance during sleep. In this case, the patient experiences respiratory failure that does not meet the CSA diagnostic criteria and CSA symptoms. Magnetic resonance imaging diffusion-weighted imaging (MRI DWI) scans revealed a lateral medullary infarction. Continuous positive airway pressure (CPAP) was applied as a primary treatment for CSA and respiratory failure. During the titration of CPAP, the apnea-hypopnea index (AHI) and arousal index (AI) were worse than the results before its use (AHI: 42.5/hr→82.8/hr, AI: 21.7/hr→40.8h). As a result, adaptive servo-ventilation (ASV) was chosen as the secondary treatment. Compared to the night-polysomnography results before the ASV treatment, the AHI improved (42.5/hr→8.6/hr). Therefore, ASV is a potential treatment for CSA and respiratory failure in these patients.

• Proceedings of the KSLP Conference
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• 2003.11a
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• pp.215-218
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• 2003

발성치료는 약400여년간 내려오고 있는 성악발성법 (벨칸토 발성)을 이용하여 음성을 교정하고 치료하는 방법으로 과학적이고 의학적으로 인정된 방법을 통하여 음성을 교육하고 교정하는 약물적이고 비 수술적인 치료 방법이다. 음성크리닉검사 1) 공기역학검사(Phonatory function analyzer test) 2) 최대발성지속시간(Maximum phonation time) 3) 컴퓨터 음성검사(Dotor speech. MDVP) 4) 듣기평가 5) 내시경검사(Stroboscopy) 6) 전기성문파형검사(EGG) 7) 호흡근력검사. (MIP. MEP. 등)및 호흡검사(FVC. FEVI. PF. 등) 8) 음성전문의사의 확진 후 발성치료권유 (중략)

• The Journal of Korean Society for Radiation Therapy
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• v.22 no.2
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• pp.113-122
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• 2010

Purpose: To evaluate the accuracy of a target position at static and dynamic state by using Dynamic phantom for the difference between tumor's actual movement during respiratory gated radiation therapy and skin movement measured by RPM (Real-time Position Management). Materials and Methods: It self-produced Dynamic phantom that moves two-dimensionally to measure a tumor moved by breath. After putting marker block on dynamic phantom, it analyzed the amplitude and status change depending on respiratory time setup in advance by using RPM. It places marker block on dynamic phantom based on this result, inserts Gafchromic EBT film into the target, and investigates 5 Gy respectively at static and dynamic state. And it scanned investigated Gafchromic EBT film and analyzed dose distribution by using automatic calculation. Results: As a result of an analysis of Gafchromic EBT film's radiation amount at static and dynamic state, it could be known that dose distribution involving 90% is distributed within margin of error of 3 mm. Conclusion: As a result of an analysis of dose distribution's change depending on patient's respiratory cycle during respiratory gated radiation therapy, it is expected that the treatment would be possible within recommended margin of error at ICRP 60.

• Clinical and Experimental Pediatrics
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• v.48 no.10
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• pp.1096-1101
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• 2005

Purpose : Recently, early surfactant replacement and tidal volume based gentle ventilation has been a fundamental treatment of respiratory distress syndrome(RDS). The aims of this study were to survey the changes in ventilator care duration and rate of complication in RDS groups. Methods : We performed a retrospective study of 255 newborn infants less than 1,500 g admitted to the neonatal intensive care unit(NICU) and discharged from January 1999 to December 2003. 141 of 255 newborn infants were RDS groups that required invasive management, such as endotracheal intubation, surfactant replacement and assisted ventilation. We analyzed epidemiologic data to study the changes in ventilator care duration and outcome of RDS groups. Results : Of 141 RDS groups, 135 were mild to moderate RDS groups and only 6 were severe RDS groups. 24(17.8%) of 135 mild to moderate RDS groups and 3(50%) of 6 severe RDS groups were antenatal no use of maternal dexamethasone. 127(90.1%) of 141 RDS groups underwent replacement of surfactant during 3 hours after birth. 121(85.9%) weaned within 48 hours. Conclusion : Our study shows a decreased frequency of severe RDS by a antenatal use of maternal dexamethasone and decreased duration of ventilator care by early surfactant replacement and gentle ventilation.

• Journal of Digital Convergence
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• v.13 no.9
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• pp.333-339
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• 2015

The purpose of this study was to examine the effects of trunk mobilization and stretching activities on respiratory function, trunk posture, and physical fatigue for elderlies with restrictive lung diseases and related respiratory impairment. The present study was conducted with ten subjects, participating for eight weeks between January and November 2014. Subjects performed trunk mobilization and stretching routines for 30 minutes per day for three days each week. The study results showed that there were significant improvements in FVC and FEV1, trunk posture, trunk movement and physical fatigue(p<.05). The study results verified that trunk mobilization and stretching activities can be used as respiratory orthopedic manual therapy to improve respiratory function, trunk posture, trunk movement and physical fatigue simultaneously for elderly with respiratory impairment. Continuous studies through therapeutic convergence with the exercise field along with the respiratory orthopedic manual therapy that used in this study for elderly people with restrictive lung diseases will be necessary for the future.

• Journal of radiological science and technology
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• v.38 no.4
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• pp.463-475
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• 2015

The standard treatment of locally advanced type of mid-esophageal cancer is concurrent chemoradiation therapy (CRT). We evaluated the feasibility of chemotherapy with adding docetaxel to the classical basic regimens of cisplatin plus 5-fluorouracil (5-FU) and radiotherapy up to 70.2 Gy using dose escalations for esophageal cancer. It was possible to escalate radiation treatment dose up to 70.2 Gy by the respiratory-gated intensity-modulated radiotherapy (gated-IMRT) based on the 4DCT-simulation, with improving target coverage and normal tissue (ex., lung, heart, and spinal cord) sparing. This study suggested that the definitive chemo-radiotherapy with docetaxel, cisplatin, and 5-fluorouracil (i.e., DCF-R) and gating IMRT is tolerable and active in patients with locally advanced mid-esophageal cancer (AEC).

• Journal of Convergence for Information Technology
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• v.9 no.10
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• pp.234-243
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• 2019

This study was conducted to investigate the effects of whole body vibration stimulation training combined with respiratory resistance on respiratory and balance function in stroke patients. 17 patients with chronic stroke were randomly assigned to the experimental group (n = 8) and the general vibration exercise program (n = 9). The intervention was conducted three times a week for 30 minutes once a week for 4 weeks. The respiratory function and balance ability were evaluated before and after the intervention to evaluate the degree of functional improvement. As a result, there was a significant difference (p<.05) between the respiratory function and the balance ability in the experimental group, and a significant difference(p<.05) in the respiratory function between the experimental group and the control group. The balance ability was not significantly different among the experimental groups. Through the results of this study, whole body vibration stimulation training combined with respiratory resistance may be useful as a program for improving respiratory function and balance ability of stroke patients.

• Tuberculosis and Respiratory Diseases
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• v.52 no.4
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• pp.376-384
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• 2002

Background : The mortality from acute respiratory distress syndrome(ARDS) in the late stage, which is characterized by progressive pulmonary fibroproliferation, is ${\geq}80%$. Although previous prospective trials failed to show a survival benefit of steroid therapy in early ARDS, recently, a few of reports have described the survival benefit of the long-term use of steroid in patients with late ARDS. In this study, we analyzed the effect of steroid therapy on patients with late ARDS retrospectively in a single. Medral intensive care unit (MICU). Methods : Over a 3-year period, the medical records of 48 ARDS patients who had been on mechanical ventilation more than 8 days were reviewed. 14 patients were treated by the long-term use of methylprednisolone and another 34 patients served as a control. Both groups were comparable regarding clinical and physiologic data lung injury score(LIS), multiple organ failure score, APACHE III and SAPS II score. Because steroid was instituted after 8 days of advanced mechanical ventilatory support in average, we arbitrarily defined the $8^{th}$ day of ARDS as first day of the study. Results : Initially, the groups had similar PF($PaO_2/FiO_2$) ratio, LIS, APACHE III and SAPS II score. By 7th day after the start of steroid therapy, there were significant improvements in PF ratio, LIS, APACHE III and SAPS II score. The mortality in the steroid treated group was significantly lower(42.9% vs 73.5%, p<0.05). Conclusion : Although the data of this study was retrospective and was not randomized, in order to improve the patient's outcomes, steroid therapy should be considered in late ARDS patients. However, prospective trials are needed to define the indication and the effect of steroid therapy in late ARDS.