نتایج جستجو برای: computed tomography ct ventilation
تعداد نتایج: 394741 فیلتر نتایج به سال:
OBJECTIVE Evaluation of regional lung function is valuable prior to lung surgery in patients with chronic lung disease. Our aim was to evaluate the reproducibility of a locally developed single photon emission tomography/computed tomography (SPET/CT) programme between and within three observers in assessing lobar pulmonary volumes, perfusion and ventilation. SUBJECTS AND METHODS Twelve lung t...
osteoma is a benign bone-forming tumor that usually arises in the craniofacial bones and rarely in the long bones. clavicular involvement is extremely rare. we report a 51-year-old woman with osteoma of the left clavicle. radiograph of the left shoulder showed a well-defined lobulated blastic mass in the proximal and mid-portion of the left clavicle. bone scintigraphy was performed 4 hours afte...
A patient with post-pneumonia empyema complicated by type-2 respiratory failure required mechanical ventilation as part of his therapy. A pneumothorax was noted on his chest radiograph. This was treated with an intercostal chest drain (ICD). Unfortunately, he was still hypoxic, his subcutaneous emphysema was worsening and the ICD was bubbling. A computed tomography (CT) scan of chest demonstrat...
Introduction The process of lung inflation during mechanical ventilation is characterized by phenomena of alveolar recruitment and distension but regional interaction and temporal sequence are not known for the core areas of the lung. The only information available are referred to subpleural alveoli, studied by microscopy. Relevance of this issue derives from the notion that 1) radiologic studi...
Gliomas account for almost 80% of primary malignant brain tumors in adults. Magnetic Resonance imaging (MRI) is still the gold standard for diagnosis of brain tumors and brain 99mTc-tetrofosmin Single Photon Emission Computed Tomography (99mTc-tetrofosmin-SPECT) has been established as a useful tool for their evaluation. Fluorine-18–2-fluoro-2-deoxy-d-glucose positron emi...
Lung contusion is an entity involving injury to the alveolar capillaries, without any tear or cut in the lung tissue. This results in accumulation of blood and other fluids within the lung tissue. The excess fluid interferes with gas exchange leading to hypoxia. The pathophysiology of lung contusion includes ventilation/perfusion mismatching, increased intrapulmonary shunting, increased lung wa...
hepatosplenic candidiasis is a fungal infection, which mostly affects patientswith hematologic malignancies such as leukemia. the pathogenesis of thisinfection is not clear yet, and the liver is the most commonly affected organ.diagnosis of hepatosplenic candidiasis can be only established via biopsy,since computed tomography (ct) scan, ultrasonography, and magneticresonance imaging (mri) yield...
Objectives While thoracic ultrasonography accurately determines the size and extent of occult pneumothoraces (PTXs) in spontaneously breathing patients, there is uncertainty about patients receiving positive pressure ventilation. We compared the lung point (i.e. the area where the collapsed lung still adheres to the inside of the chest wall) using the two modalities ultrasound (US) and computed...
Background and Aims: The evaluation of absorbed dose received by patients could give useful information for radiation risk estimation. This study was performed to compare the entrance skin dose received by patients in cone beam computed tomography (CBCT), conventional and spiral computed tomography (CT).Materials and Methods: In this experimental study, 81 calibrated TLD chips were used. the TL...
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