الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
DVT and PE are considered parts of the same pathologic process and are termed thromboembolic disease. The venous system of the lower extremities and the pulmonary arterial system ideally therefore should be evaluated together. The aim of our study was to assess the role of MDCTPA and lower limb venography in the evaluation of thromboembolic disease.
Investigations algorithm for patients with suspected PE was done using assessment of symptoms and signs and use the clinical probability scores to categorize a patient as having low, intermediate or high probability of PE.
MDCTPA is currently the diagnostic method of choice for the evaluation of patients with a high clinical probability of PE as well as for patients with low to moderate probabilities of PE. CTA was performed after injection of non-ionic contrast medium. Bolus tracking technique was used centered in the lumen of the pulmonary trunk combined with the use of thin collimation allowed better delineation of the subsegmental branches and increased reader confidence.
MDCTPA can also detect other useful signs suggesting the hemodynamic severity of PE. Dilatation of the MPA is an index of increased pulmonary artery pressure
MDCT is also useful for identifying underlying disorders and differentiating the various causes of secondary pulmonary hypertension
Combined pulmonary CT angiography-indirect CT venography, since other algorithms require additional examinations to evaluate the venous system, which may increase expense and may further delay diagnosis and treatment.