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  1. VQ Scan Pulmonary Embolism

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    Description: Ventilation-perfusion scintigraphy in a woman taking oral contraceptives and valdecoxib. (A) After inhalation of 20.1 mCi of Xenon-133 gas, scintigraphic images were obtained in the posterior projection, showing uniform ventilation to lungs. (B) After intravenous injection of 4.1 mCi of Technetium-99m-labeled macroaggregated albumin, scintigraphic images were obtained, shown here in the posterior projection. This and other views showed decreased activity in the following regions: apical segment of right upper lobe, anterior segment of right upper lobe, superior segment of right lower lobe, posterior basal segment of right lower lobe, anteromedial basal segment of left lower lobe, and lateral basal segment of left lower lobe.
    Keywords: Radioisotope Scanning, PE, Thromboembolisms, Pulmonary, Pulmonary Thromboembolism, Thromboembolism, Pulmonary, Radiodermatitis, Embolisms, Pulmonary, Scintigraphy, Embolism, Pulmonary, Pulmonary Thromboembolisms, Diagnosis, Gamma Camera Imaging, Scintiphotography, Pulmonary Embolisms, Scanning, Radioisotope

  2. Diagnostic algorithm: Pulmonary embolism

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    Description: A diagnostic algorithm for pulmonary embolism (estimated frequencies of test results and associated prevalences of pulmonary embolism for a hypothetical cohort of 1000 outpatients) [1]. If a very sensitive D-dimer assay is used, it can be the first test performed: a negative result excludes pulmonary embolism regardless of clinical assessment category and a positive test can be followed by a ventilation–perfusion scan [2]. A ventilation–perfusion scan can be performed as the initial test without using clinical assessment of the probability of pulmonary embolism as part of the diagnostic process [3]. Pulmonary angiography or helical CT may be considered if the clinical assessment of pulmonary embolism probability is low, particularly if a D-dimer test has not been done [4]. Additional testing (e.g., helical CT, bilateral venography) may be considered if overall assessment suggests a high probability of pulmonary embolism (e.g., 50%–80%), symptoms are severe or cardiopulmonary reserve is poor [5]. Venography should be considered if there is an increased risk of a false-positive ultrasound result (e.g., previous venous thromboembolism, equivocal ultrasound findings, preceding findings suggest low probability of pulmonary embolism [e.g., ≤ 10%]) [6]. It is reasonable not to repeat ultrasound testing, or to do only 1 more ultrasound after 1 week, if preceding findings suggest a low probability of pulmonary embolism (e.g., ≤ 10%) [7]. If helical CT is used in place of ventilation–perfusion lung scanning: (i) intraluminal filling defects in segmental or larger pulmonary arteries are generally diagnostic for pulmonary embolism; (ii) all other findings (i.e., a normal CT scan or intraluminal filling defects confined to the subsegmental pulmonary arteries) are nondiagnostic and can be managed as shown for a nondiagnostic lung scan.
    Keywords: Embolism, Pulmonary Thromboembolism, Thromboembolism, Pulmonary, Embolism, Pulmonary Pulmonary Thromboembolisms, Embolisms, Pulmonary, Thromboembolisms, Pulmonary, Vascular Diseases, Pulmonary Embolisms

  3. CT (chest), Pulmonary Embolism with Infarction, Anterior to Posterior

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    Description: CT Chest - Pulmonary embolism with infarct - anterior to posterior
    Keywords: Cine-CT, Tomography, X Ray Computed, Pulmonary Thromboembolism, X Ray Computerized Tomography, Pulmonary Embolisms, Tomography, X-Ray Computerized Axial, Tomography, X-Ray Computer Assisted, Electron Beam Tomography, Infarct, Computed X Ray Tomography, X Ray Tomography, Computed, Tomography, Transmission Computed, CT Scan, X-Ray, Computerized Tomography, X Ray, CAT Scan, X Ray, CAT Scan, X-Ray, Embolisms, Pulmonary, Electron Beam Computed Tomography, Thromboembolisms, Pulmonary, Diagnosis, Computerized Tomography, X-Ray, Tomography, X-Ray Computerized, X-Ray Computer Assisted Tomography, Tomodensitometry, Pulmonary Thromboembolisms, X-Ray Computerized Axial Tomography, Computed Tomography, X-Ray, X-Ray Tomography, Computed, Embolism, Pulmonary, Tomography, Xray Computed, CT X Ray, Thromboembolism, Pulmonary

  4. CT (chest), (axial), Pulmonary Embolism

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    Description: CT Chest - Pulmonary embolism
    Keywords: Computerized Tomography, X-Ray, Electron Beam Tomography, Computed Tomography, X-Ray, X Ray Tomography, Computed, Tomography, Transmission Computed, Embolism, Pulmonary, Tomography, X Ray Computed, CAT Scan, X-Ray, Computerized Tomography, X Ray, Thromboembolisms, Pulmonary, CT Scan, X-Ray, Pulmonary Embolisms, Tomography, X-Ray Computerized Axial, CT X Ray, Infarct, X-Ray Computer Assisted Tomography, Tomodensitometry, Embolisms, Pulmonary, Diagnosis, X-Ray Tomography, Computed, X Ray Computerized Tomography, Pulmonary Thromboembolisms, Thromboembolism, Pulmonary, Tomography, X-Ray Computer Assisted, Cine-CT, Tomography, Xray Computed, Tomography, X-Ray Computerized, X-Ray Computerized Axial Tomography, Computed X Ray Tomography, Pulmonary Thromboembolism, CAT Scan, X Ray, Electron Beam Computed Tomography

  5. CT (chest), Pulmonary Embolism with Infarction, Superior to Inferior

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    Description: CT Chest - Pulmonary embolism with infarct superior to inferior
    Keywords: CAT Scan, X-Ray, Tomography, X-Ray Computerized, Electron Beam Computed Tomography, Tomography, X-Ray Computer Assisted, X-Ray Computer Assisted Tomography, X-Ray Computerized Axial Tomography, X-Ray Tomography, Computed, CAT Scan, X Ray, CT X Ray, Pulmonary Thromboembolism, X Ray Tomography, Computed, Pulmonary Embolisms, Embolism, Pulmonary, Pulmonary Thromboembolisms, Tomography, X-Ray Computerized Axial, Tomography, Transmission Computed, Computerized Tomography, X Ray, Infarct, Tomography, X Ray Computed, Embolisms, Pulmonary, Cine-CT, X Ray Computerized Tomography, Thromboembolisms, Pulmonary, CT Scan, X-Ray, Computerized Tomography, X-Ray, Diagnosis, Computed X Ray Tomography, Tomography, Xray Computed, Thromboembolism, Pulmonary, Electron Beam Tomography, Computed Tomography, X-Ray, Tomodensitometry

  6. CT (chest), Pulmonary Embolism

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    Description: CT - Pulmonary embolism
    Keywords: X Ray Tomography, Computed, X-Ray Computerized Axial Tomography, Computed X Ray Tomography, CT X Ray, CT Scan, X-Ray, Tomography, Xray Computed, Computerized Tomography, X-Ray, Embolisms, Pulmonary, Computed Tomography, X-Ray, Tomography, X-Ray Computerized Axial, CAT Scan, X Ray, Electron Beam Tomography, Infarct, Pulmonary Thromboembolisms, Pulmonary Embolisms, Tomography, Transmission Computed, X-Ray Computer Assisted Tomography, Tomography, X-Ray Computer Assisted, Electron Beam Computed Tomography, X Ray Computerized Tomography, Embolism, Pulmonary, Tomography, X Ray Computed, Thromboembolism, Pulmonary, Cine-CT, Tomodensitometry, Thromboembolisms, Pulmonary, Pulmonary Thromboembolism, X-Ray Tomography, Computed, Diagnosis, Computerized Tomography, X Ray, CAT Scan, X-Ray, Tomography, X-Ray Computerized, CT Scan, Axial Plane

  7. CT (chest), (axial), Pulmonary Embolism, (annotated)

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    Description: Pulmonary embolism
    Keywords: Tomodensitometry, Diagnosis, Embolisms, Pulmonary, Pulmonary Thromboembolisms, CT X Ray, CT Scan, X-Ray, Pulmonary Embolisms, Computerized Tomography, X-Ray, Computed Tomography, X-Ray, Pulmonary Thromboembolism, Tomography, X-Ray Computer Assisted, Tomography, Xray Computed, Computed X Ray Tomography, X-Ray Computer Assisted Tomography, X-Ray Tomography, Computed, Tomography, Transmission Computed, Electron Beam Tomography, Electron Beam Computed Tomography, Tomography, X-Ray Computerized, Cine-CT, X Ray Tomography, Computed, X-Ray Computerized Axial Tomography, X Ray Computerized Tomography, Computerized Tomography, X Ray, Infarct, Thromboembolisms, Pulmonary, Embolism, Pulmonary, CAT Scan, X-Ray, Tomography, X Ray Computed, Tomography, X-Ray Computerized Axial, Thromboembolism, Pulmonary, CAT Scan, X Ray, CT Scan, Axial Plane