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Publication Metadata only Upper Airway Areas, Volumes, and Linear Measurements Determined on Computed Tomography During Different Phases of Respiration Predict the Presence of Severe Obstructive Sleep Apnea(2018-07-01) Khaisang Chousangsuntorn; Thongchai Bhongmakapat; Navarat Apirakkittikul; Witaya Sungkarat; Nucharin Supakul; Jiraporn Laothamatas; Indiana University School of Medicine Indianapolis; Faculty of Medicine, Ramathibodi Hospital, Mahidol University; Mahidol Universitymeasurements on lateral scout images during quiet breathing and from the upper airway area and volume measurements were obtained on axial cross-sections during different phases of respiration. All CT variables were compared between study groups. A logistic...© 2018 Purpose: The objective of this study was to analyze the potential of using low-dose volumetric computed tomography (CT) during different phases of respiration for identifying patients likely to have severe obstructive sleep apnea (OSAPublication Metadata only The Effect of Smoking and Respiration of Carbon Monoxide among Active Smokers in Palembang, Indonesia(2021-05-01) Rico Januar Sitorus; Imelda G. Purba; Merry Natalia; Kraichat Tantrakarnapa; Faculty of Tropical Medicine, Mahidol University; Universitas Sriwijaya; Ministry of Health, Republic of IndonesiaSmoking leads to disease and disability as well as harms nearly every organ of the body. Furthermore, tobacco-smoking is known to cause pulmonary dysfunction and lead to complications, pain, or even death. This study aimed to measure the risk... factors for the respiration of carbon monoxide among smokers. A cross-sectional design was implemented by involving 156 smokers in Karyajaya Subdistrict, Palembang City. The dependent variable was carbon monoxide levels (ppm), while the independentPublication Open Access Effect of Fungus-Growing Termite on Soil CO2 Emission at Termitaria Scale in Dry Evergreen Forest, Thailand(2021) Warin Boonriam; Pongthep Suwanwaree; Sasitorn Hasin; Phuvasa Chanonmuang; Taksin Archawakom; Akinori Yamada; Mahidol University. Faculty of Environment and Resource Studies; Suranaree University of Technology. Institute of Science. School of Biology; Valaya Alongkorn Rajabhat University under the Royal Patronage. College of Innovative Management. Innovation of Environmental Management; Thailand Institute of Scientific and Technological Research. Expert Centre of Innovation Clean Energy and Environment; Royal Forest Department. Sakaerat Environmental Research Station; Tokyo Institute of Technology. Department of Biological SciencesTermites are one of the major contributors to high spatial variability in soil respiration. Although epigeal termite mounds are considered as a point of high CO2 effluxes, the patterns of mound CO2 effluxes are different, especially the mound... mounds of M. carbonarius were measured for CO2 efflux rates on their mounds and surrounding soils in dry and wet seasons. Also, measurement points were investigated for the active underground passages at the top 10% of among efflux rates. The mean rateItem Metadata only Reliability of the Nepali Version of the Spinal Cord Independence Measure Self-Report(2022-01-01) Khatri P.; Mahidol UniversityA self-report measure is considered a practical alternative tool for longitudinal monitoring and for community models of disability. Spinal Cord Independence Measure Self-Report (SCIM-SR) was developed to measure the functional independence....980), respiration and sphincter management subscale 0.941 (0.893-0.968), and mobility subscale 0.966 (0.938-0.981). The internal consistency reached an acceptable range for the total score and most of the subscales except for those of respiration and sphincterItem Metadata only Tolerance level determination for automated EPID-based deep inspiration breath-hold (DIBH) instability evaluation in breast cancer patients(Mahidol University. Mahidol University Library and Knowledge Center, 2024) Aphisara Deeharing; Puangpen Tangboonduangjit; Todsaporn FuangrodBreast cancer is the most common cancer in women. Radiation therapy (RT) is the most recommended treatment to reduce local recurrence and improves the overall survival rate. However, RT has limitations regarding the patient's respiratory motion, especially in the left side breast. The irradiated field through the left side breast is projected near the heart, leading to cardiac morbidity and mortality. Currently, a deep inspiration breath-hold (DIBH) technique becomes standard respiratory motion management to reduce the cardiac dose during tangential field left breast radiotherapy. However, there is no current system to evaluate the patient's breath-hold capability towards DIBH accuracy in real-time. The cine images from an electronic portal imaging device (EPID) were acquired and analyzed to find the stability of the breath-hold during treatment delivery by using in-house MATLAB program. The Canny's edge detection is applied to find and track the lung depth, which represents the stability of the patient breath-hold. The system performance was tested from the three experimental setups with phantom to simulate the motion for test accuracy, reproducibility, and capability. For the clinical tests, there were randomly three patients for evaluating the breath-hold capability for multiple fractions during the treatment course. In addition, the tolerance level of breath-hold based on cardiac toxicity was determined using the dose calculation of various simulated organ motions using a RayStation system. For phantom studies, the maximum difference of accuracy test was -0.994 mm, the reproducibility showed a promising system, and the system can handle image blurring well (< 1mm maximum difference) but very sensitive to image noise (maximum difference was -73.2 mm). For clinical tests, the system was able to evaluate the patients' breath-hold capabilities corresponding to the amplitude setting from the treatment room. The tolerance level to switch from DIBH to free-breath (FB) delivery should be less than 11.00 mm in AP direction from the reference position. To sum up, the proposed system showed high accuracy (with less than a millimeter error) of detecting breath-hold capability that can be applied clinically.Publication Open Access Impact of chest wall motion caused by respiration in adjuvant radiotherapy for postoperative breast cancer patients(2016) C. Lowanichkiattikul; M. Dhanachai; C. Sitathanee; S. Khachonkham; P. Khaothong; Mahidol University. Faculty of Medicine, Ramathibodi Hospital) and mediolateral (M–L, 0.6–1.1 mm) dimension in all five measured points. There was no significant effect of the type of surgery, BMI, lung volume, and the Haller index on the distances of chest wall movement. Additional margins of 7, 5, and 2 mm to the A–P, S–I... axis was minimally affected by respiration.Item Metadata only Validation of the Nepali version of the Spinal Cord Independence Measure Self-Report(2024-12-01) Khatri P.; Khadka A.; Suttiwong J.; Khatri P.; Mahidol UniversityStudy design: A methodological study. Objectives: To establish the criterion-related validity of the Nepali version of the Spinal Cord Independence Measure Self-Report (SCIM-SR). Setting: Outpatient Department of the Spinal Injury Rehabilitation... the differences. Results: The Spearman’s rank correlation coefficient for the total score was 0.961, self-care subscale was 0.590, respiration and sphincter management subscale was 0.897, and mobility subscale was 0.891. The ICC (2,1) and confidence intervalItem Metadata only The effect of Pilates respiration-based classical vocal technique on student's vocal performance : a single-case study(Mahidol University. Mahidol University Library and Knowledge Center, 2016) Seth Kampiranon; Natee Chiengchana; Preeyanun PromsukkulThe purpose of this study was to examine the effectiveness of Pilates Respiration-Based Classical vocal technique (PRBC) on student's vocal performance. The participants were two students who were trained in contemporary and classical singing.... The single-case (AB) design was employed in this study, consisting of baseline session (A) and intervention session (B). The Classical Voice Rubrics Assessment was used to measure vocal performance outcomes, with findings presented by visual inspectionPublication Metadata only Further studies on the effect of phosphoenolpyruvate on respiration-dependent calcium transport by rat heart mitochondria(1976-02-16) Prakorn Chudapongse; Mahidol Universityand inorganic phosphate causes the release of Ca 2+ from mitochondria. The phosphoenolpyruvate-stimulated Ca 2+ efflux can be observed with mitochondria loaded with low initial Ca 2+ concentration (0.12 mM) in the incubation medium. Measurements of mitochondrial... H + translocation produced by addition of Ca 2+ to respiring mitochondria show that phosphoenolpyruvate depresses H + ejection and enhances H + uptake by mitochondria. The Ca 2+ -releasing effect of phosphoenolpyruvate was found to be significantlyItem Metadata only The impact of respirable dust exposure on lung function parameters of motorcycle taxi drivers in Bangkok and adjacent provinces, Thailand(2024-01-01) Samana K.; Ito K.; Suthienkul O.; Ketsakorn A.; Samana K.; Mahidol Universityworking was measured by personal air sampling. Respirable dust concentrations collected with personal air sampling suggested that motorcycle taxi drivers working at workstations where they were exposed to respirable dust at high concentrations tended... of 343 motorcycle taxi drivers in Bangkok and adjacent provinces in Thailand and their lung function parameters were analyzed using spirometry in May and June 2022. Of these, 153 participants were selected and their exposure to respirable dust during