نتایج جستجو برای: tissue equivalence computed tomography
تعداد نتایج: 1181719 فیلتر نتایج به سال:
BACKGROUND The determination of the adequate depth of superior vena cava cannulae during minimally invasive cardiac surgery is important for warranting venous drainage and preventing complications during cardiopulmonary bypass. We investigated whether preoperative cardiac computed tomography might be useful for predicting the optimal depth of superior vena cava cannulae. METHODS The patients ...
conclusion there is still excessive unjustified concern of pte in less trained physicians leading to excessive diagnostic work-up. loyalty to the existing guideline for management of suspected pte in educational hospitals and supervision of attending physicians could prevent overuse of ctpa. results during a 6-month period, 82 patients who underwent ctpa were included. the prevalence of pte was...
background: proper rotation of components in total knee arthroplasty (tka) will largely affect the postoperative outcome. ethnical variation may affect rotational profile. we aimed to evaluate distal femur rotation in iranian population using transepicondylar axes. methods : from a total of 450 knee ct scans and via consecutive sampling, 150 qualified subjects with normal lower extremities al...
Computed tomography perfusion imaging in acute stroke requires further validation. We aimed to establish the optimal computed tomography perfusion parameters defining the infarct core and critically hypoperfused tissue. Sub-6-h computed tomography perfusion and 24-h magnetic resonance imaging were analysed from 314 consecutive patients with ischaemic stroke. Diffusion-weighted imaging lesion vo...
mesoblastic nephroma is a rare entity in adulthood. we report a case of mesoblastic nephroma in a 35-year-old woman who presented with left flank pain. computed tomography images favored a soft tissue mass in the upper pole of the left kidney. the lesion was excised and sent for pathological analysis. pathological and immunohisto- chemical studies favored a diagnosis of mesoblastic nephroma.
intestinal lipomatosis also known as lipohyperplasia is a rare disease. diffuse infiltration of the fatty tissue mainly in the submucousal layer is characteristic. it is usually asymptomatic and found incidentally. we report a case of lipomatosis in the terminal ileum and ileocecal valve. multidetector computed tomography (mdct) with contrast enhancement showed fatty infiltration of the termina...
Background: This study assessed the optimal timing of computed tomography for detection of metastatic disease in locoregional lymph nodes in patients with rectal cancer who have undergone chemoradiotherapy. Materials and Methods: This observational retrospective study was performed in a single institution. All patients with locally advanced rectal cancer treated with chemoradiotherapy, followed...
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...
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