Feb 14, 2025 · CT pulmonary angiography (CTPA) will show filling defects within the pulmonary vasculature with acute pulmonary emboli. When the artery is viewed in its axial plane the central filling defect from the thrombus is surrounded by a thin …

Jul 18, 2024 · The computed tomography pulmonary angiogram (CTPA/CTPE) is a commonly performed diagnostic examination to exclude pulmonary emboli (PE). Each radiology department will have a slightly different method for achieving the same outcome, i.e. diagnostic density of the main pulmonary artery and its branches.

Jun 13, 2019 · The Wells criteria for pulmonary embolism is a risk stratification score and clinical decision rule to estimate the probability for acute pulmonary embolism (PE) in patients in which history and examination suggests acute PE is a diagnostic possibility.

Oct 28, 2024 · Increased vascular resistance due to obstruction of the vascular bed leads to pulmonary hypertension. Differential diagnosis. Differential considerations on a CTPA include 5: perivascular pulmonary edema artifacts/interpretational errors. motion: breathing artifact; flow-related artifact; streak artifact; misinterpretation. due to incorrect ...

Sep 11, 2023 · Saddle pulmonary embolism commonly refers to a large pulmonary embolism that straddles the bifurcation of the pulmonary trunk, extending into the left and right pulmonary arteries. If large enough, it can completely obstruct both left and right pulmonary arteries resulting in right heart failure and, unless treatment is prompt, death.

Jun 2, 2024 · Right heart strain can often occur as a result of pulmonary arterial hypertension (and its underlying causes such as massive pulmonary emboli). Biomarkers. Patients with right heart strain may have elevated levels of 4: troponin. B-type natriuretic peptide (BNP) Radiographic features CT

Sep 25, 2024 · Pulmonary fat embolism refers to pulmonary embolism by fat, most commonly due to major trauma. This can rarely progress to life-threatening fat embolization syndrome.

Sep 5, 2019 · The historical gold standard for diagnosis of pulmonary embolism, it is reserved for patients where CT pulmonary angiography or V/Q scans are non-diagnostic. A filling defect or vessel occlusion is diagnostic of pulmonary embolism.

When reviewing a CT pulmonary angiogram for possible pulmonary emboli, it is important to be systematic and review the arteries to each segment of the lungs. Pulmonary arteries should be reviewed on a minimum of two reconstructions to maximize the sensitivity of image interpretation.

Study positive for PE, with large embolism at the origin of the left lower lobe pulmonary artery extending distally, and smaller emboli in the right lung.