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The falciform ligament sign is a radiological sign observed on abdominal imaging in cases of pneumoperitoneum, where free intraperitoneal air outlines the falciform ligament. [1] This sign is considered a diagnostic indicator of free air within the abdominal cavity and is most commonly identified on computed tomography (CT) scans and less ...
A CT scan image showing a ruptured abdominal aortic aneurysm. CT Scan of 11 cm Wilms' tumor of right kidney in 13-month-old patient. Computed tomography of the abdomen and pelvis is an application of computed tomography (CT) and is a sensitive method for diagnosis of abdominal diseases. It is used frequently to determine stage of cancer and to ...
CT scan of a normal abdomen and pelvis, ... The voxel with the highest attenuation is displayed. Therefore, high-attenuating structures such as blood vessels filled ...
High attenuation crescent sign or hyperdense crescent sign is a radiologic sign indicating impending aortic rupture. [1] [2] It is seen as a curvilinear area paralleling the vessel wall of the aorta. [3] The hyperdense area is due to intramural or mural thrombus haemorrhage.
The Hounsfield unit (HU) scale is a linear transformation of the original linear attenuation coefficient measurement into one in which the radiodensity of distilled water at standard pressure and temperature is defined as 0 Hounsfield units (HU), while the radiodensity of air at STP is defined as −1000 HU.
The most common symptoms of a peritoneal inclusion cyst are persistent abdominal or pelvic pain and a subjectively palpable abdominal mass. [2] Often, a physical examination reveals no palpable mass in the abdomen or pelvis. [3] The symptoms can last for days or months at a time. [4]
High-resolution CT image showing ground-glass opacities in the periphery of both lungs in a patient with COVID-19 (red arrows). The adjacent normal lung tissue with lower attenuation appears as darker areas. Ground-glass opacity (GGO) is a finding seen on chest x-ray (radiograph) or computed tomography (CT) imaging of the lungs.
Volume rendered CT scan of abdominal and pelvic blood vessels. CT angiography is a contrast CT where images are taken with a certain delay after injection of radiocontrast material. The contrast material is radiodense causing it to light up brightly within the blood vessels of interest. In order for the CT scanner to be able to scan the correct ...