Imaging the Lung Under Pressure
نویسندگان
چکیده
This study was undertaken to improve our understanding of the mechanical properties of the respiratory system for a range of diving mammals to improve our ability to predict gas exchange during diving. Our long term aim is to determine the alveolar collapse depth and the pressure where gas exchange cease in marine mammals. We hypothesized that differences in the anatomy of the respiratory system result in significant species differences in collapse depth. Understanding how pressure affects gas exchange is vital to understand how diving mammals manage inert and metabolic gases during breath-hold diving.
منابع مشابه
Preparation of human serum albumin microspheres (MSA) kit for lung imaging in Iran [Persian]
Radiolabeled Microspheres of human serum albumin (MSA) is of great importance in the analysis of regional lung perfusion. Preparation of MSA kit has been installed in our Division recently is carried out in two stages: 1. Production of albumin sphere particles with suitable sizes by using the spinning disk technique. 2. Formulation of MSA as a radiopharmacutical kit. So it can be labelled...
متن کاملSustained Hypoxic Pulmonary Vasoconstriction in the Isolated Perfused Rat Lung: Effect of α1-adrenergic Receptor Agonist
Background: Alveolar hypoxia induces monophasic pulmonary vasoconstriction in vivo, biphasic vasoconstriction in the isolated pulmonary artery, and controversial responses in the isolated perfused lung. Pulmonary vascular responses to sustained alveolar hypoxia have not been addressed in the isolated perfused rat lung. In this study, we investigated the effect of sustained hypoxic ventilation o...
متن کاملThree Different Imaging Modalities of a Patient with the Aortic Coarctation
The patient was a 19 year-old woman with the diagnosis of resistant hypertension, although she was under treatment of three classes of anti-hypertensive drugs (beta blocker, angiotensin receptor blocker, diuretic) for more than one year. In physical examination there was only a significant difference between the systolic blood pressure of upper and lower extremities (200 vs. 120 mmHg), without ...
متن کاملEarly detection of intravascular large B-cell lymphoma by 18FDG-PET/CT with diffuse FDG uptake in the lung without respiratory symptoms or chest CT abnormalities
Intravascular large B-cell lymphoma (IVLBCL) is a rare and aggressive subtype of systemic extranodal non-Hodgkin diffuse large B-cell lymphoma (DLBCL). We report a rare case of IVLBCL who showed diffuse 18F-fluorodeoxyglucose (FDG) uptake in the lung in FDG-positron emission tomography/computed tomography (PET/CT) without respiratory symptoms or chest CT abnormalities. Serum biochemical studies...
متن کاملDesign and Fabrication of a Four-Dimensional Respiratory Phantom for Studying Tumor Movement in Radiotherapy with Magnetic Resonance Imaging
Introduction: In radiation therapy, determining the location of the tumor accurately during irradiation is one of the most important requirements. However, lung tumors are not fixed in a single location and move during irradiation due to respiratory motion. Due to limitations in assessing such movements, using a lung phantom can be useful and operational for their fast, easy an...
متن کاملComment on “Computed Tomography Imaging Findings in Chemical Warfare Victims with Pulmonary Complications”
Dr.Mirsadraei and colleagues performed an interesting study about the lung HRCT findings in chemical warfare patients who suffering from long-term pulmonary complications. They found that air trapping and mosaic attenuation were the most common lung HRCT findings. Also they divided patients in different clinical entities according to the lung HRCT findings (Bronchiolitis Oblitrans, pulmonary fi...
متن کامل