• Clinical Pain
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• 제18권2호
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• pp.70-75
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• 2019

Objective: The purpose of this study is to evaluate the usefulness of infrared thermography in patients with carpal tunnel syndrome by comparing with electrodiagnostic and ultrasonographic findings. Method: From January 2014 to October 2017, electrodiagnosis, ultrasound, and digital infrared thermal image (DITI) of unilateral carpal tunnel syndrome diagnosed in a single hospital were retrospectively analyzed. The subjects with bilateral symptoms of carpal tunnel syndrome, peripheral vascular disease, diabetes, thyroid disease, fibromyalgia, rheumatic disease, systemic infection, inflammation, malignant tumor, and other musculoskeletal disorders such as finger osteoarthritis, peripheral neuropathy, cervical radiculopathy, and the previous history of surgery were excluded. Results: Of 53 patients diagnosed with carpal tunnel syndrome, 11 were male and 42 were female. The visual analogue scale was 4.9 ± 1.9, and the duration of symptom was 11.8 ± 12.5 months. There was no statistically significant difference in the body surface temperature between the unaffected and affected sides. The severity of symptoms, electrodiagnostic findings, and cross-sectional area of the median nerve significantly correlates to each other. The temperature difference between the second fingers of the affected and unaffected sides showed a weak correlation with the amplitude of sensory nerve action potential and onset latency of compound muscle action potential, when there was no significant correlation with the other parameters. Conclusion: The difference in temperature on the surface of the body, which can be confirmed by DITI, is little diagnostic value when DITI is performed in unilateral carpal tunnel syndrome patients, especially when compared with ultrasonography.

• 대한방사선기술학회지:방사선기술과학
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• 제42권5호
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• pp.365-371
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• 2019

We have developed and applied a diagnostic Multi-Leaf Collimator (MLC) to optimized the X-ray field in medical imaging and the usefulness evaluated through the fusion of infrared image and X-ray image acquired by infrared camera. The hand and skull radiography with multi-leaf collimator(MLC) showed significant area dose reductions of 22.9% and 31.3% compared to ARC and leakage dose was compliant with KS A 4732. Also scattering doses of 50 cm and 100 cm showed a significant decrease to confirm the usefulness of MLC. It was confirmed that the fusion of infrared images with an adjustable degree of transparency was possible in the X-ray images. Therefore, fusion of anatomical information with physiological convergence is expected to contribute and improvement of diagnostic ability. In addition, the feasibility of convergence X-ray imaging and DITI devices and the possibility of driving MLC with infrared images were confirmed.

• 한국방사선학회논문지
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• 제11권4호
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• pp.273-278
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• 2017

적외선 체열검사를 시행한 $L_4-L_5$ 추간판 탈출증 환자의 45명 중 여자가 더 많았으며, 연령은 50대가 가장 많았다. 피절 분포표에 따라 측정한 결과, ${\chi}^2-test$에서는 성별과 나이에 따라서 유의한 차이를 보이지 않았다(p>0.05). $L_4-L_5$ 추간판 탈출증 환자의 ROI 온도를 측정한 부위는 후면 오른쪽 정강이뼈 뒤쪽의 온도가 가장 높았으며, 후면 왼쪽 정강이뼈 뒤쪽-전면 오른 무릎아래-전면 왼 무릎아래의 순이었다. 측정부위에 따라 유의한 차이를 보였다(p<0.05). 나이에 따라서는 ${\chi}^2-test$에서는 나이에 따라 0.030을 유의한 결과를 보였다(p<0.05). 정상인의 평균 ROI 온도는 $31.20{\pm}0.58$, 환자의 평균 ROI온도는 $30.30{\pm}0.50$으로 온도 차이는 $0.66{\pm}0.59$로 나타났다. 환자의 ROI온도가 정상인과 차이가 나는 지 알아보기 위한 일 표본 t-검정결과, 유의확률이 0.03으로 0.05보다 작으므로 환자의 ROI온도는 $31.20{\pm}0.58$보다 낮게 나타났다(p<0.05). 앞으로의 과제는 온열환경에 따른 보정 테이타의 처리기술과 그것을 이용한 새로운 온열 인덱스의 개발이 필요하다고 사료된다. 따라서 데이타의 보정을 줄이기 위해서는 적외선 체열 진단 시 전처치가 무엇보다 중요하며, 이를 검사하는 방사선사는 환자를 측정 시 주의 깊은 관찰과 배려가 요구된다.

• Journal of Welding and Joining
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• 제35권2호
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• pp.63-70
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• 2017

As the Non Destructive Test (NDT) for the welded structure, PT(Penetration Test). MT(Magnetic Test), RT (Radioisotope Test) and UT(Ultrasonic Test) methods are widely used in practice. These NDT methods have been developed toward high efficiency, low cost, real time, and high precise new NDT. For example, RT methods are developed to CT(Computed Tomography)and DR(Digital Radiography), and UT metheds are developed into Phased array, Guide wave, TOFD method. Moreover, the Infrared thermography and Laser ultrasonic technique are newly developed for applying in high temperature objects as the non-contact NDT methods. In this review paper the new high efficiency NDT methods for the welded structure are introduced and the trend of NDT rules applying in welded structure are described.

• Journal of Korean Neurosurgical Society
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• 제39권6호
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• pp.423-426
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• 2006

Objective : There is still debate about the diagnostic efficacy of digital infrared thermographic imaging[DITI], nevertheless, it has been used for the diagnosis of carpal tunnel syndrome[CTS]. We performed comparative study between patient and control groups to investigate the diagnostic value of DITI in CTS. Methods : We studied 27 patients with electrodiagnostically-proven CTS and 18 symptom-free volunteers as a control. We measured thermal difference on DITI in the corresponding regions of the hands and forearms. We statistically analyzed the thermal data using a t-test. Results : The average thermal difference in the diagnosed patient group ranged from $0.0303^{\circ}C$ to $0.2856^{\circ}C$, while that in control group ranged from $0.0611^{\circ}C$ to $0.2878^{\circ}C$. In the CTS patient group, thermal difference between each 2nd finger was higher than that of other regions. However, there was no statistical significance between patient and control groups. Conclusion : We found that the diagnostic value of DITI in CTS was not sufficient. There should be a reconsideration of the usefulness of DITI in CTS.

• 한국임상수의학회지
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• 제19권2호
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• pp.121-124
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• 2002

This study was performed to examine the distribution of mean body surface temperature in 11 clinically healthy dogs. In stable state, ventral and dorsal part of each individual is scanned by digital infrared thermography. The body surface temperature of dorsocranial(DCr), dorsocaudal(DCd), ventrocranial(VCr) and ventrocaudal(VCd) regions were measured by Region Of Interersts(ROI). The mean body surface temperatures of adult dogs were higher than those of puppies in each regions. In addition mean body surface temperature of the ventral region was higher than that of dorsal region.

• 대한한방체열의학회지
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• 제5권1호
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• pp.1-13
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• 2006

Objectives : This study was designed to analyze basic data for cold hypersensitivity patients with a questionnaire and investigate correlation between cold hypersensitivity and Heart Rate Variability(HRV). Methods : 49 patients who complain of cold hypersensitivity on hands and feet in ambulatory care were investigated in Oriental Gynecology, Kyunghee Oriental Medical Center and Women medical center, Kangnam Koreana hospital from May 1, 2006 to October 20, 2006. All patients were asked to answer a questionnaire. After careful I examination to rule out other disease which may affect Digital Infrared Thermal Imaging(DITI) and HRV data, patients were taken thermography for the diagnosis of cold hypersensitivity Based on the result of thermography, the patients were divided into two groups(Objective cold hypersensitivity and Subjective cold hypersensitivity). Then, these two groups were compared using HRV data which was measured in the supine position for 5 minutes. Results: 1. For most patients, cold hypersensitivity first developed during puberty. 2. The parts of the body that felt cold first time were hands and feet. 3. The cold sensation was increased in winter or at bedtime Showing that the sensation can be changed according to the level of coldness. 4. Among women who sufferfrom cold hypersensitivity, very few of them were treated. 5. More than half of cold hypersensitivity patients's family member also had a cold hypersensitivity. 6. The decrease in mean values of LF/HF ratio was observed in objective cold hypersensitivity group than subjective cold hypersensitivity group and the decrease was significant(P=0.014) when examined by Student t-test. Conclusions : It is necessary that the cold hypersensitivity patients should be treated carefully considering the facts mentioned above. And it can be suggested that dysautinomia be related with cold hypersensitivity and be evaluated by HRV.

• 한국농림기상학회지
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• 제13권2호
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• pp.79-86
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• 2011

산간계곡에는 특히 야간에 찬 공기가 흘러 고이는 일이 흔한데, 이런 곳의 식생은 생장과 발육이 그렇지 않은 주변지역에 비해 달라질 수 있어 관심의 대상이 다. 이 연구는 작은 규모의 집수역에서 적외선 영상을 이용하여 냉기호와 온난대의 형상을 가시화 할 수 있는지 알기 위해 수행하였다. 경남 하동군 악양면 형제봉(해발 1,117m)에 적외선 영상 복사계를 설치하여 관측여건이 양호했던 2011년 5월 17일 새벽부터 일출시까지 악양계곡의 열영상을 $640{\times}480$ 해상도로 획득하였다. 열영상 분석결과 계곡의 바닥에 나타난 낮은 온도 분포에 의해 찬공기의 배수를 인지할 수 있었고, 계곡 양쪽 사면에서 바닥보다 $5^{\circ}C$ 높은 온난대의 실체를 확인할 수 있었다. 적외선 영상을 이용하면 기존 고해상도 디지털 기온분포도 '전자기후도'의 신뢰성 검증이 한층 수월해져서 전자기후도 실용성 확보에 도움이 될 것이다.

• Advances in Computational Design
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• 제5권2호
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• pp.127-146
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• 2020

Building Information Modeling (BIM) is increasingly used throughout the facility's life cycle for various applications, such as design, construction, facility management, and maintenance. For existing buildings, the geometry of as-built BIM is often constructed using dense, three dimensional (3D) point clouds data obtained with laser scanners. Traditionally, as-built BIM systems do not contain the material and textural information of the buildings' elements. This paper presents a semi-automatic method for generation of material and texture rich as-built BIM. The method captures and integrates material and textural information of building elements into as-built BIM using thermal infrared sensing (TIS). The proposed method uses TIS to capture thermal images of the interior walls of an existing building. These images are then processed to extract the interior walls using a segmentation algorithm. The digital numbers in the resulted images are then transformed into radiance values that represent the emitted thermal infrared radiation. Machine learning techniques are then applied to build a correlation between the radiance values and the material type in each image. The radiance values were used to extract textural information from the images. The extracted textural and material information are then robustly integrated into the as-built BIM providing the data needed for the assessment of building conditions in general including energy efficiency, among others.

• 대한한의학회지
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• 제18권1호
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• pp.25-39
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• 1997

Shoulder hand syndrome is characterized by pain, vasomotor instability, and tenderness, mainly in the distal upper extremity. The pathophysiologic mechanism of this syndrome is not yet proved. The purpose of this study is to evaluate the usefulness of thermographic imaging on shoulder hand syndrome after stroke for early diagnosis and its clinical pattern analysis including acupuncture and electroacupuncture therapy. This study was performed from June to September in 1996 on 46 stroke patients who were admitted at Oriental hospital of Kyung Hee Medical Center. The study group were 23 patients with shoulder hand syndrome. The control group were 23 patients without shoulder hand syndrome. Skin temperatures on the both upper extremities were measured by Digital Infrared Thermographic Imaging(D.I.T.I.) before the study and 3 weeks later again. The results were as follows; 1. The shoulder hand syndrome group were significantly more restricted in shoulder passive range of motion than the control group. 2. The shoulder hand syndrome group showed significant temperature difference of both dorsal hands. 3. The electroacupunture therapy group were significantly more improved on the temperature difference of both dorsal hands than acupuncture therapy group in 3 weeks later. 4. Both posterior arms showed the biggest temperature difference from 11 to 30 days in shoulder hand syndrome group. 5. The lesser passive ROM(range of motion) of shoulder group showed significantly increased temperature difference of both hands. The above results show that measurement of shoulder passive range of motion and D.I.T.I. is a useful method for early diagnosis on shoulder hand syndrome and its clinical pattern analysis including evaluation of acupuncture and electroacupuncture therapy. Continuous study will be needed for more clinical application and evaluation on shoulder hand syndrome.