Objective: This study is to investigate the possibility of CT Pulmonary Angiography (CTPA) at low kV and low-concentration contrast medium using iterative reconstruction technique. Background: Considering the importance of using more appropriate imaging technique for accurate diagnosis of pulmonary thromboembolism (PTE) with less side effects, we aimed to evaluate the quality of pulmonary 64-multidetector computed tomographic (MDCT) angiography in pregnant and postpartum women with suspected PTE in Isfahan. To perform CT pulmonary angiography (CTPA) using a minimal amount of iodinated contrast media. Eighty-four CTPA exams performed on … In addition, this article will illustrate the diagnostic criteria of acute and chronic pulmonary emboli. CT angiography of the chest (CTA chest) is a cross-sectional diagnostic examination that can be performed ECG-gated or non-ECG gated. The rapid progress in cross-sectional imaging techniques offers a great help in the development of a reliable, accurate, and readily available technique for diagnosing pulmonary embolism , . CT is widely used as an integral part of diagnostic evaluation of patients with suspected SSc-PAH. The resulting in crease in image noise is compensated by the CT angiography (CTA) is considered the gold standard in diagnosis of PE . Introduction. The specifics will vary depending on CT hardware and software, radiologists' and referrers' preferences, institutional protocols, patient factors (e.g. allergy) and time constraints. Purpose. The pulmonary vasculature may be evaluated with various invasive and noninvasive methods. This was a retrospective study. CT pulmonary angiogram (or CTPA) is a special test used primarily to look for the presence of pulmonary embolism (blood clots in the lung).. How is a CTPA performed? Keywords: Computed tomography pulmonary angiography Diagnosis Pulmonary embolism Introduction Computed tomography pulmonary angiography (CTPA) is currently the first line imaging technique as recommended by Radiopaque contrast material is injected, and the pulmonary arterial tree is visualized on a series of rapidly exposed chest radiographs ( Fig. CTPA was introduced in the 1990s as an alternative to ventilation/perfusion scanning, which relies on radionuclide imaging of the blood vessels of the lung. Subtraction computed tomography (SCT) is a technique that uses software-based motion correction between an unenhanced and an enhanced CT scan for obtaining the iodine distribution in the pulmonary parenchyma. Within the last several years, spiral computed tomography angiography (SCTA) of the pulmonary arteries has emerged as a noninvasive angiographic modality for the evaluation of patients with suspected pulmonary embolism (PE). DOI: 10.1007/s10140-015-1340-7 Corpus ID: 25656105. Reduced z-axis technique for CT Pulmonary angiography in pregnancy—validation for practical use and dose reduction @article{Shahir2015ReducedZT, title={Reduced z-axis technique for CT Pulmonary angiography in pregnancy—validation for practical use and dose reduction}, author={Kaushik Shahir and Jonathan M … Methods Forty-seven patients with suspected pulmonary embolism underwent high-pitch CTPA on a 3rd generation dual-source CT scanner. CTA (CTPA – CT pulmonary angiography) has been the technique of choice for detection of pulmonary embolism for at least the last decade . Not only does it allow demonstration of associated interstitial lung disease (ILD) but CT pulmonary angiography (CTPA) also permits exclusion of significant thromboembolic disease. For CT Angiography, there is no need for sedation or general anesthesia. What is CTPA CT pulmonary angiography (CTPA) is a medical diagnostic test that employs computed tomography to obtain an image of the pulmonary arteries. PE is a potentially fatal disease in which a thrombus is lodged into a pulmonary artery blocking blood flow and potentially leading to respiratory distress, acute right cardiac failure or death. ! CT Scan angiography of the thoracic aorta (SIEMEN) - CLVT Động mạch chủ ngực - Duration: 12:19. Pulmonary Arteries. NB: This article is intended to outline some general principles of protocol design. CT dose index (CTDIvol) and dose length product (DLP) were obtained. The scans were modified to create reduced anatomic coverage scans extending from … Pulmonary angiography is a radiographic technique in which a catheter is guided from a systemic vein through the right atrium and ventricle and into the main pulmonary artery or one of its branches. Subtraction computed tomography (SCT) is a technique that uses software-based motion correction between an unenhanced and an enhanced CT scan for obtaining the iodine distribution in the pulmonary parenchyma. Methods: 47 patients (25 females) with mean age 69 years (range 41–82 years) referred for contrast-enhanced chest CT were prospectively included in this Phase IV clinical drug trial. OBJECTIVE: To determine the overall sensitivity and specificity for CT pulmonary angiography (CTPA) in the diagnosis of pulmonary emboli (PE) using a meta-analysis of the published literature. MATERIALS AND METHODS: 24 consecutive patients suspected PE underwent CTPAs using a 64-detector MDCT. Using contrast injected into the blood vessels, images are created to look for blockages, aneurysms (dilations of walls), dissections (tearing of walls), and stenosis (narrowing of vessel). Angiography is an imaging test that uses x-rays and a special dye to see inside the arteries. The aim of this study is to determine the feasibility of using reduced scan range CT pulmonary angiography technique in pregnancy for pulmonary embolism (PE) and to quantify resulting dose reduction. 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