Maciej Guziński

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Dual energy CT (DECT) was conceived at the very beginning of the computed tomography era. However the first DECT scanner was developed in 2006. Nowadays there are three different types of DECT available: dual-source CT with 80(100) kVp and 140 kVp tubes (Siemens Medical Solution); dual-layer multi-detector scanner with acquisition 120 or 140kVp (Philips(More)
BACKGROUND Although splenic artery aneurysms (SAAs) are common, their giant forms (more than 10 cm in diameter) are rare. Because of the variety of forms and locations of these aneurysms, there are a lot of therapeutic methods to choose. In our case of a giant true aneurysm we performed an endovascular embolization with N-butyl-cyano-acrylate (NBCA) glue.(More)
BACKGROUND Takayasu arteritis is an inflammatory disease of large-diameter arteries. Aorta and its branches are most frequently affected. Takayasu arteritis occurs mainly in young women and, if left untreated, leads to fatal complications. Digital subtraction angiography (DSA) is considered the gold standard in imaging of Takayasu arteritis. CASE REPORT A(More)
BACKGROUND The application of computed tomographic angiography (CTA) for the diagnosis of brain death (BD) is limited because of the low sensitivity of the commonly used two-phase method consisting of assessing arterial and venous opacification at the 60th second after contrast injection. The hypothesis was that a reduction in the scanning delay might(More)
PURPOSE The most common pituitary tumors are adenomas, which however may be mimicked by other tumors that can show a very similar appearance in plain MRI. The aim of our study was to evaluate the usefulness of perfusion weighted MR imaging (PWI), including signal-intensity curves analysis in the differential diagnosis of sellar/parasellar tumors. METHODS(More)
BACKGROUND Percutaneous transhepatic biliary drainage (PTBD) is a method of biliary tree decompression, applied as palliative treatment in patients with malignant biliary tree critical stenosis/obstruction, but also as a potentially curative treatment in patients with non-malignant biliary tree stenosis. Novel instrumentation dedicated to PTBD has been(More)
BACKGROUND Pulmonary embolism (PE) is a relatively common and potentially life threatening clinical condition with estimated prevalence to be 0.4%. Early diagnosis of PE followed by adequate treatment reduces the risk of major complications. Multislice computed tomography pulmonary angiography (CTPA) currently constitutes an imaging modality of choice in(More)
BACKGROUND The aim of this study was to evaluate atrophy rates, perfusion, and diffusion disturbances within the hippocampus, which is the site of characteristic changes in Alzheimer's disease (AD) and mild cognitive impairment (MCI). MATERIAL AND METHODS Thirty patients with AD (mean age 71.2 yrs) - 34 with MCI (mean age 67.7 yrs) and 20 healthy controls(More)
OBJECTIVE The purpose of this study is to retrospectively evaluate size-specific dose estimates of a renal-colic CT protocol and to assess the quality and diagnostic value of obtained images. MATERIALS AND METHODS The study population included 82 consecutive adult patients with acute renal colic undergoing CT with a reduced radiation dose (noise index,(More)
BACKGROUND Great variability in the vasculature of the abdominal organs makes the pre-operative evaluation of arterial anatomical conditions extremely important and helpful. The aim of our study was to establish the prevalence of anatomical variations of the arteries branching from the abdominal aorta and to compare the results with the ones presented in(More)