Animals’ regional femur blood (F) alteration was studied under an inadequate decompression by using the inhaled isotope 133Xe washout method. Results showed that the average F on left and right side of minipigs’ fem...Animals’ regional femur blood (F) alteration was studied under an inadequate decompression by using the inhaled isotope 133Xe washout method. Results showed that the average F on left and right side of minipigs’ femur decreased from 15.4±1.8 and 16 .9±2.0 ml/ (100 g.min) (before exposure) to 10±1.8 and 11.1±1.6 ml/(100mg.min) (after expposure for 1.5 h under the pressure of 0.5 MPa and then decompression to normal with the rate of 0.03~0.04MPa/min), respectively; the blood flow of hematopoietic marrow tissues (f1)on both sides also decreased from 19.3±2.0 and 22.1±1.9 ml/(100mg.min) to 13.9±1.4 and 13.8±1.0 ml/(100 mg.min). The exact same alteration also happened in the experiment on New Zealand rabbits. It indicates that inadequate decompression in hyperbaric exposure can give rise to decrease animals’ bone blood flow and insufficient bone blood supply serves as one of the reasons for causing decompressive osteonecrosis.展开更多
Radioactive nuclides as 131I and 133Xe are increasingly used for both clinical diagnosis and therapeutic treatment of the patient. For example, 131I is used for the treatment of thyroid gland cancer. Otherwise, 133Xe ...Radioactive nuclides as 131I and 133Xe are increasingly used for both clinical diagnosis and therapeutic treatment of the patient. For example, 131I is used for the treatment of thyroid gland cancer. Otherwise, 133Xe is used in ventilation studies to assess and evaluate pulmonary function and to provide images of the lungs in both cardiac and pulmonary diseases, such as asthma, pulmonary emphysema, bronchiectasis, carcinoma of the lung, and pulmonary embolism [1,2]. Furthermore, cerebral blood flow is measured using 133Xe inhalation. In this study, the X and γ-rays emission probabilities in the decay of 131I and 133Xe were precisely measured with a calibrated Si(Li) detector. Results of this study were compared using available results in the literature. Good agreement was observed between our results and available results in the literature.展开更多
文摘Animals’ regional femur blood (F) alteration was studied under an inadequate decompression by using the inhaled isotope 133Xe washout method. Results showed that the average F on left and right side of minipigs’ femur decreased from 15.4±1.8 and 16 .9±2.0 ml/ (100 g.min) (before exposure) to 10±1.8 and 11.1±1.6 ml/(100mg.min) (after expposure for 1.5 h under the pressure of 0.5 MPa and then decompression to normal with the rate of 0.03~0.04MPa/min), respectively; the blood flow of hematopoietic marrow tissues (f1)on both sides also decreased from 19.3±2.0 and 22.1±1.9 ml/(100mg.min) to 13.9±1.4 and 13.8±1.0 ml/(100 mg.min). The exact same alteration also happened in the experiment on New Zealand rabbits. It indicates that inadequate decompression in hyperbaric exposure can give rise to decrease animals’ bone blood flow and insufficient bone blood supply serves as one of the reasons for causing decompressive osteonecrosis.
文摘Radioactive nuclides as 131I and 133Xe are increasingly used for both clinical diagnosis and therapeutic treatment of the patient. For example, 131I is used for the treatment of thyroid gland cancer. Otherwise, 133Xe is used in ventilation studies to assess and evaluate pulmonary function and to provide images of the lungs in both cardiac and pulmonary diseases, such as asthma, pulmonary emphysema, bronchiectasis, carcinoma of the lung, and pulmonary embolism [1,2]. Furthermore, cerebral blood flow is measured using 133Xe inhalation. In this study, the X and γ-rays emission probabilities in the decay of 131I and 133Xe were precisely measured with a calibrated Si(Li) detector. Results of this study were compared using available results in the literature. Good agreement was observed between our results and available results in the literature.
