A good knowledge of clinical presentation and of risk factors for pulmonary embolism is mandatory to improve adequate clinical suspicion. Some recent improvements in diagnostic strategy have to be emphasized. A low D-dimer level has a good negative predictive value to rule out pulmonary embolism. Ventilation-perfusion lung scan is the most often used imaging technique. In case of non diagnostic...

Thromb Haemost 2006; 95: 914–5 Dear Sir, Spiral computed tomography (CT) of the pulmonary arteries has now generally become accepted as a reliable first-line diagnostic test for pulmonary embolism (PE) (1). But not every spiral CT is the same. Both single-slice and multi-slice CT have proved reliable in diagnosing PE (1, 2), but single-slice CT, which uses up to five-times thicker imaging secti...

a 36-year-old woman with right upper quadrant abdominal pain since three months previously and no other significant medical history was referred for evaluation of an abdominal mass. upon clinical examination, a large palpable mass in the mid -upper abdominal area was noted. abdominal ultrasound and spiral ct-scan showed a large hepatic mass in the left liver lobe. the patient was referred for t...

According as the progress of medical technique, X-ray imaging systems have been progressed. Especially, X-ray CT imaging system have been improved and widely used as general diagnostic methods nowadays in Japan. However, the doses for patients of X-ray CT imaging are relatively higher than of other Xray examinations. The dose estimations and optimizations on X-ray CT are very important for medi...

PURPOSE To compare the spiral computed tomographic dacryocystography (CT-DCG) findings of failed and successful dacryocystorhinostomies (DCR) and to detect the possible causes of failure before reoperation. METHODS Eighteen patients with failed and 15 patients with functional DCR were examined by spiral CT-DCG, a combination of contrast dacryocystography and spiral computed tomography. Radiol...

PURPOSE To evaluate the use of the 64-slice spiral computed tomography (CT) with perfusion-weighted imaging in the early diagnosis of ground-glass opacity lung cancers. METHODS 412 patients with ground-glass opacities found by conventional CT scan in our hospital, and deemed highly suspected of being lung cancers, were enrolled in the study between February of 2012 and February of 2015. Sixty...

BACKGROUND To show the safety and stability of a spiral wire needle (Somatex; Rietzneuendorf, Germany) in the detection and subsequent thoracoscopic resection of subpleural and/or small nodules of the lung. METHODS Under local anesthesia and CT control, 13 patients underwent the positioning of a spiral wire needle into the lung, with the spiral located close to or inside the nodule to be rese...

Computed Tomography (CT) examinations have rapidly increased in number over the last few years due to recent advances such as the spiral, multidetector-row, CT fluoroscopy and Positron Emission Tomography (PET)-CT technology. This has resulted in a large increase in collective radiation dose as reported by many international organisations. It is also stated that frequently, image quality in CT ...

BACKGROUND Injury to the facial skeleton and the adjoining soft tissues is a frequently occurring condition. The main aim of this work was to assess the value of multiplanar and three-dimensional (3D) reconstruction computed tomography (CT) images obtained by using multi-detector row technology in spiral data acquisition in patients with facial skeleton injury. THE AUTHORS ATTEMPTED TO ANSWER T...