Introduction: Pulmonary embolism (PE) is a common lethal disease that its clinical symptoms may be seen in many other diseases. Computed tomography pulmonary angiography (CTPA) is a valuable diagnostic modality for detection of PE. In addition, it can accurately detect the other diseases with clinical symptoms similar to PE. The aim of this study is to evaluate the frequency of PE and nonemboli...

POSTOPERATTVE HYPOXAEMIA following anaesthesia has been attributed mainly to two causes; venous admixture (shunt component) and variation in ventilationperfusion ratios (distribution component). In order to assess quantitatively the role played by the latter factor, the method of breathing 100 per cent oxygen has been employed by many investigators.This method is based on the fact that the diff...

abstract solitary pulmonary nodule (spn) is explained as a separate, well-determined obscurity with the maximum size of 3cm which is enclosed by typical lung tissue and is not related to any other anomalies in the lung or adjacent lymph nodes. among imaging modalities mri has more benefits such as high spatial resolution and usage of nonionizing radiation, however, the efficacy of this imaging ...

The diagnosis of pulmonary embolism may be confounded by a clinical presentation that is often subtle or atypical. Therefore pulmonary angiography, although invasive, has been widely used to prove pulmonary embolism. The aim of this review is to discuss the value of non-invasive techniques, such as lung scan and chest computed tomography scan, in the diagnosis of pulmonary embolism. Ventilation...

In this case report we describe an unusual appearance seen on a ventilation-perfusion (V/Q) scan in a woman with pulmonary hypertension. Although the pulmonary hypertension was not caused by pulmonary emboli, the V/Q scan suggested several cardiac anomalies which may lead to pulmonary hypertension. Most of the cardiac anomalies, including right-sided aortic arch and right-to-left shunt, can be ...

embolism cases by V/Q scan. Method During Jun 2008 to Apr 2010, patients with acute pulmonary embolism underwent both ventilationeperfusion scintigraphy (V/Q scan) and spiral CT pulmonary angiography (CTPA) were systematically reviewed. The patients were grouped by results of CTPA. Group 1: CTPA showed that the main pulmonary or lobe arteries were involved; Group 2: CTPA showed that the thrombi...

Pulmonary alveolar microlithiasis is an uncommon infiltrative pulmonary disease characterized by deposition of microliths in the alveoli. We present the case of a young adult with complaints of shortness of breath on exertion. Chest radiograph showed innumerable small, dense nodules, diffusely involving both the lungs - predominantly in the lower zones. High-resolution CT scan illustrated wides...

introduction: application of chest radiography for all multiple trauma patients is associated with a significant increase in total costs, exposure to radiation, and overcrowding of the emergency department. ultrasound has been introduced as an alternative diagnostic tool in this regard. the aim of the present study is to compare the diagnostic accuracy of chest ultrasonography and radiography i...