Publications by authors named "Vrachliotis T"

Marfan syndrome (MFS) is an inherited autosomal-dominant connective tissue disorder with multiorgan involvement including musculoskeletal, respiratory, cardiovascular, ocular, and skin manifestations. Life expectancy in patients with MFS is primarily determined by the degree of cardiovascular involvement. Aortic disease is the major cardiovascular manifestation of MFS.

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Cardiovascular disease (CVD) is the most common cause of morbidity/mortality worldwide. Early diagnosis is the key to improve CVD prognosis, and cardiovascular imaging plays a crucial role in this direction. Echocardiography is the most commonly used imaging modality.

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The aim of the present study was to report the safety and efficacy of percutaneous navigation under local anesthesia for computed tomography-guided microwave ablation of malignant liver lesions located in the hepatic dome. Patients with primary and secondary malignant liver lesions located in the hepatic dome who underwent percutaneous computed tomography-guided microwave ablation using a computer-assisted navigation system under local anesthesia were prospectively evaluated. The primary objective was technical success.

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Background: We retrospectively evaluated the effectiveness and safety of computed tomography-guided percutaneous microwave ablation (MWA) of metastatic liver disease in terms of 5-year overall survival and 5-year disease-free survival.

Methods: Institutional database research identified 32 colorectal cancer patients with oligometastatic liver-only disease who underwent percutaneous computed tomography-guided MWA. Contrast-enhanced computed tomography or magnetic resonance imaging was used for post-ablation follow up.

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To date, conservative management including physical and/or systemic pharmacologic therapy is considered as the first line approach for the management of neuropathic pain syndromes. In the era of an opioid overdose crisis with an increased concern upon the risks and harms arising from the misuse of medicines for pain management, percutaneous minimally invasive techniques such as nerve infiltrations as well as neurolysis or neuromodulation techniques can be proposed to control pain and improve life quality. Computed tomography can serve as an ideal guiding technique due to its specific characteristics including precise anatomic delineation, high spatial resolution and good tissue contrast.

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Osteoarthritis of the knee is the most common cause of chronic knee pain being more prevalent in middle-aged and elderly patients. Symptomatic patients complain of pain and mobility impairment. Therapeutic armamentarium includes physical therapy, oral pharmacologic therapy, intra-articular injections, nerve ablation or modulation, trans-catheter arterial embolization, minimally invasive arthroscopic treatment and partial or total knee arthroplasty.

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Introduction: Congenital solitary pelvic kidney is a rare condition, and its association with an abdominal aortic aneurysm is even more unusual. To the best of our knowledge, only two such cases have been reported in the literature to date.

Case Presentation: We report the case of a 59-year-old Caucasian man with a congenital solitary pelvic kidney, who was found to have an abdominal aortic aneurysm 83 mm in diameter.

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The present study is focused on the personnel doses during several types of interventional radiology procedures. Apart from the use of the official whole body dosemeters (thermoluminescence dosemeter type), measurements were performed to the extremities and the eyes using thermoluminescent loose pellets. The mean doses per kerma area product were calculated for the monitored anatomic regions and for the most frequent types of procedures.

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Objective: To compare the enhancement of the pulmonary and aortic vasculature between a biphasic injection 64-slice, a single-phase injection 16-slice, and a single-phase injection 10-slice multidetector computed tomographic (CT) angiography (CTA) protocols.

Methods: With institutional review board approval and Health Insurance Portability and Accountability Act compliance, 50 patients (16 men, 34 women; mean age, 51.5 years; range, 30-75 years) with atypical chest pain from the emergency department were scanned using a triple rule-out protocol on a 64-slice CT scanner.

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Purpose: To prospectively evaluate the enhancement of coronary, pulmonary, and thoracic aortic vasculature by using biphasic single-acquisition 64-section computed tomographic (CT) angiography and to prospectively evaluate if differences in right side of the heart and coronary venous enhancement interfere with interpretation of coronary arteries.

Materials And Methods: With internal review board approval and HIPAA compliance, 50 patients (16 men, 34 women; mean age, 51.5 years; range, 30-75 years) with atypical chest pain were referred from the emergency department and were imaged with a 64-section CT scanner after premedication with oral atenolol and/or intravenous metoprolol.

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Left ventricular noncompaction (LVNC) represents an arrest of myocardial morphogenesis, resulting in persistence of multiple prominent ventricular trabeculations and deep intertrabecular recesses. We report a case of a 30-year-old patient who was referred to our hospital due to familial history of cardiomyopathy. The patient underwent transthoracic echocardiography, cardiac catheterization and contrast ventriculography and cardiac magnetic resonance imaging.

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Purpose: To present the application of a covered stent for the management of a left internal carotid artery (ICA) aneurysm that had recanalized following embolization with Onyx.

Case Report: A 54-year-old man had a giant intracavernous aneurysm of the left ICA successfully occluded with Onyx. Recurrence of symptoms 5 months later prompted control angiography, which showed partial recanalization of the aneurysm.

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Purpose: To present percutaneous management of extensive clot trapped in a temporary inferior vena cava (IVC) filter.

Case Report: A 20-year-old man with a large sacral tumor and left external iliac vein thrombosis had a wire-mounted Günther temporary filter (GTF) prophylactically placed in the infrarenal IVC prior to tumor resection. The 7-day postsurgical venogram prior to filter removal showed extensive clot trapped by the filter, as well as interval cephalic migration, with the filter tip now at the level of the renal veins.

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Contrast-enhanced three-dimensional MR angiography has evolved into a promising technique in the study of the pulmonary vasculature. Both congenital and acquired entities can be now morphologically demonstrated in a non-invasive manner obviating the need for conventional pulmonary angiography. Due to spatial resolution limitations, however, it is still premature to routinely apply the method in the detection of small subsegmental emboli, in cases of suspected pulmonary embolism, and further technical developments will be required.

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Purpose: To determine if cardiac pulsations are visible and quantifiable on spectral waveforms during Doppler ultrasonographic (US) evaluation of transjugular intrahepatic portosystemic shunts (TIPS), and if so, whether their magnitude declines with shunt dysfunction.

Materials And Methods: Baseline and pre-revision US images obtained in 15 patients with venographically confirmed TIPS malfunction were retrospectively examined for spectral waveform pulsation. Cardiac pulsatility was quantified by using the venous pulsatility index (VPI), the venous equivalent of resistive index.

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Transitional cell carcinoma (TCC) is the most common urothelial malignancy. We present a case of an exceptionally aggressive TCC involving the renal pelvis and ureter. To our knowledge, an upper tract TCC of such rapid growth has not been reported.

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Purpose: To assess the effect of different attachment patterns between graft materials and stents on type I endoleak.

Materials And Methods: Nitinol stents were covered with a coating of Tegaderm in either a straight-edged pattern across the stent cells or a contoured zigzag pattern conforming to the stent skeleton's honeycomb-shaped cells. The stent-grafts were deployed in an ex vivo circuit across a gap of tubing to simulate an aneurysm cavity.

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Rationale And Objectives: The purpose of this study was to assess the effect of unilateral common iliac vein occlusion on the capturing efficacy of the Greenfield filter in vitro.

Materials And Methods: A stainless steel over-the-wire Greenfield filter was placed in the Silastic inferior vena cava module of a pulsatile circuit. Three 30-mm blood clots in sets of five were injected through the module's right iliac limb with the circuit in four experimental conditions: vertical position, both iliac limbs patent (VP); vertical position, left iliac limb occluded (VOC); horizontal position, both iliac limbs patent (HP); and horizontal position, left iliac limb occluded (HOC).

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