Thermal therapy and evaluation by a precise temperature control device

Maruyama, Shigenao; Takashima, Shigeru; Okajima, Junnosuke; Komiya, Atsuki; Seki, Takashi; Yambe, Tomoyuki

doi:10.1002/htj.20334

Cited by 11 publications

(10 citation statements)

References 10 publications

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“…We previously developed a heat transfer control device for local thermal stimulation that can be used to simulate the heat and mechanical pressure effects of moxibustion ( fig. 2) [5][6][7][8]. This device consists of a heating disk (10 cm in diameter) that can be set at a certain temperature with a precision of 0.1 °C, and it heats a small area to a uniform temperature, thus allowing us to quantify the effects of moxibustion.…”

Section: Methodsmentioning

confidence: 99%

The Effect of Warming of the Abdomen and of Herbal Medicine on Superior Mesenteric Artery Blood Flow – a Pilot Study

Takayama

Seki

Watanabe

et al. 2010

Forsch Komplementmed

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Background: In traditional Japanese and Chinese medicine, warming the abdomen with moxibustion or herbal medicines has been used for various diseases. However, the effects of these therapies on hemodynamics have not been clear. We clarify the physiological effects of these therapies on the superior mesenteric artery (SMA) blood flow. Participants and Methods: 28 healthy male volunteers were randomly assigned to groups A and B. Group A (n = 14) underwent local thermal stimulation of the paraumbilical region for 20 min at a temperature of 40 °C; this simulated the heat and mechanical pressure effects of moxibustion. Group B (n = 14) took the herbal medicine Daikenchuto (TJ-100; 5.0 g) with distilled water. As a control, group C (n = 14) took distilled water alone. Blood flow volume in the SMA was measured by ultrasound from rest to 50 min after the start of each intervention. Results: The SMA blood flow volume increased significantly between 10 to 40 min after the start of thermal stimulation (p < 0.05), and it also increased significantly between 10 to 50 min after administration of TJ-100 (p < 0.01) as compared to the resting volume. However, SMA blood flow volume did not change significantly after administration of water alone. There was no significant difference in SMA blood flow changes between groups A and B. Conclusions: The results suggest that one of the physiological effects of warming the abdomen according to a traditional concept in thermal stimulation and herbal medicine is an increase of SMA blood flow volume.

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Section: Methodsmentioning

confidence: 99%

The Effect of Warming of the Abdomen and of Herbal Medicine on Superior Mesenteric Artery Blood Flow – a Pilot Study

Takayama

Seki

Watanabe

et al. 2010

Forsch Komplementmed

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“…Sato et al [5] performed a time-series evaluation of blood circulation trends in endocranial blood vessels during indirect moxa treatment of the "gokoku" acupoint (the base part between a thumb and a forefinger on the back side of the hand) by measuring the cerebral blood flow using the Doppler method, discovering that the blood flow increases. Maruyama et al [6] developed an abdomen heating device that can perform highly precise temperature control, and quantitatively evaluated the heat treatment by performing clinical testing of patients. The maximum heating temperature which the patients reported to be comfortable did not appear to be correlated with sex or BMI value, but the older the patient, the higher maximum heating temperature.…”

Section: Introductionmentioning

confidence: 99%

Heat Transfer Behavior and Physiological Effects of Living Human Skin under Local Radiative Thermal Stimulation

Kinoshita¹,

Yoshida²

2017

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Abstract. In order to develop a moxibustion treatment device that can heat appropriately by radiation while lowering the risk of burning by the moxa, a local radiative heating device for skin was fabricated and the unsteady response of the skin surface and internal temperature during infrared radiative heating were evaluated based on subjective experiments and numerical analysis. Because it was necessary to perform non-contact temperature measurements of the heated surface to control the heat, methods of evaluating and correcting the impact on measurement precision were studied. The study clarified that as skin was heated, the skin surface temperature rose, and the blood flow speed around the heated part increased. A local thermal sensation corresponded to the increase. Absorption of radiation by skin occurred only near the surface, so it was concluded that a useful way to effectively heat skin, was to set a certain temperature as the upper limit of the surface temperature, and lower the heat when this temperature has been reached, wait for the heat to penetrate more deeply, then restart heating.

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“…These parameters play an important role in both the theoretical research of bioheat transfer (1) and clinical applications including thermal therapy (2) , laser therapy (3) , and cryosurgery (4) . Therefore, it is necessary to measure the thermophysical properties of living tissues to ensure accuracy in-vivo.…”

Section: Introductionmentioning

confidence: 99%

Inverse Method for Estimating Local Thermal Diffusivity of Biomaterials

Okabe

Okajima

Komiya

et al. 2013

JTST

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This paper describes an inverse method for estimating the local thermal diffusivity of biomaterials such as meats and vegetables using a thermophysical handy tester. A thermophysical handy tester is a fast, non-invasive, in-situ, local device for measuring the thermophysical properties of a material. However, it cannot be applied to soft or liquid materials precisely. In this study, an inverse analysis of this device was conducted to make it applicable to the measurement of the thermophysical properties of these materials. In the proposed inverse analysis, a real coded genetic algorithm (GA) was used to minimize the objective function. First, a calibration experiment of the device was conducted by using water to determine the apparatus constant. Then, this inverse method was validated by measuring the thermal diffusivity of some materials such as agar-gelled water, silicone oil, and glycerol. It was found that, the estimated thermal diffusivity shows good agreement with the reference value. Moreover, the thermal diffusivity of various biomaterials such as vegetables and meats was estimated, and reasonable values could be obtained by a proposed method.

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Thermal therapy and evaluation by a precise temperature control device

Cited by 11 publications

References 10 publications

The Effect of Warming of the Abdomen and of Herbal Medicine on Superior Mesenteric Artery Blood Flow – a Pilot Study

The Effect of Warming of the Abdomen and of Herbal Medicine on Superior Mesenteric Artery Blood Flow – a Pilot Study

Heat Transfer Behavior and Physiological Effects of Living Human Skin under Local Radiative Thermal Stimulation

Inverse Method for Estimating Local Thermal Diffusivity of Biomaterials

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