Parcourir par auteur "Vassiou, K."
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Anatomy and Complications Following Laparoscopic Sleeve Gastrectomy: Radiological Evaluation and Imaging Pitfalls
Triantafyllidis, G.; Lazoura, O.; Sioka, E.; Tzovaras, G.; Antoniou, A.; Vassiou, K.; Zacharoulis, D. (2011)To evaluate the post-operative gastric anatomy depicted by upper gastrointestinal gastrografin swallow studies (UGI) and report radiological work-up and management of complications following laparoscopic sleeve gastrectomy ... -
Application value of 3T H-1-magnetic resonance spectroscopy in diagnosing breast tumors
Vassiou, K.; Tsougos, I.; Kousi, E.; Vlychou, M.; Athanasiou, E.; Theodorou, K.; Arvanitis, D. L.; Fezoulidis, I. V. (2013)Background: Assessment of breast lesions with magnetic resonance imaging (MRI) provides a means for lesion detection and diagnosis. Proton (hydrogen-1) magnetic resonance spectroscopy (H-1-MRS) has been proposed as a useful ... -
Assessing heterogeneity of lesion enhancement kinetics in dynamic contrast-enhanced MRI for breast cancer diagnosis
Karahaliou, A.; Vassiou, K.; Arikidis, N. S.; Skiadopoulos, S.; Kanavou, T.; Costaridou, L. (2010)The current study investigates the feasibility of using texture analysis to quantify the heterogeneity of lesion enhancement kinetics in order to discriminate malignant from benign breast lesions. A total of 82 biopsy-proven ... -
Breast cancer: Follow-up with MRI after therapy
Kanavou, T.; Lazoura, O.; Tsilikas, K.; Karanikas, C.; Vassiou, K. (2009)Breast cancer is the most frequent malignancy in women worldwide. The incidence and mortality rates of the disease have increased the past few years, especially in richer countries that have adopted the mammographic screening ... -
Celiomesenteric trunk demonstrated by multi-detector computed tomography angiography: two cases of a rare vascular variation
Rountas, C.; Fanariotis, M.; Vlychou, M.; Arvanitis, D. L.; Fezoulidis, I.; Vassiou, K. (2013)We present two cases of patients with celiomesenteric trunk in whom the celiac trunk and the superior mesenteric artery arise off a common vessel from the ventral part of the aorta, which was demonstrated by multi-detector ... -
Characterization of breast lesions with CE-MR multimodal morphological and kinetic analysis: Comparison with conventional mammography and high-resolution ultrasound
Vassiou, K.; Kanavou, T.; Vlychou, M.; Poultsidi, A.; Athanasiou, E.; Arvanitis, D. L.; Fezoulidis, I. V. (2009)Objective: Evaluation of the diagnostic value of magnetic resonance mammography and comparison with conventional mammography and ultrasonography in cases of women with suspicious breast lesions. Subjects and methods: ... -
Comparison of PD BLADE with fat saturation (FS), PD FS and T2 3D DESS with water excitation (WE) in detecting articular knee cartilage defects
Lavdas, E.; Topalzikis, T.; Mavroidis, P.; Kyriakis, I.; Roka, V.; Kostopoulos, S.; Glotsos, D.; Zilidis, C.; Stathakis, S.; Tsagkalis, A.; Papanikolaou, N.; Batsikas, G.; Arvanitis, D. L.; Vassiou, K. (2013)The purpose of this study, is to compare the sequences: 1) proton density (PD) BLADE (BLADE is a PROPELLER-equivalent implementation of the Siemens Medical System) with fat saturation (FS) coronal (COR), 2) PD FS COR, 3) ... -
Contrast-enhanced sonographic detection of vesicoureteral reflux in children: Comparison with voiding cystourethrography
Vassiou, K.; Vlychou, M.; Moisidou, R.; Sioka, A.; Fezoulidis, I. V. (2004)Purpose: Prospective evaluation of contrast-enhanced sonography (CES) as an alternative to radiographic voiding cystourethrography (VCUG) in the detection of vesicoureteral reflux (VUR). Materials and Methods: Seventy-six ... -
The contribution of diffusion tensor imaging and magnetic resonance spectroscopy for the differentiation of breast lesions at 3T
Tsougos, I.; Svolos, P.; Kousi, E.; Athanassiou, E.; Theodorou, K.; Arvanitis, D.; Fezoulidis, I.; Vassiou, K. (2014)Background: Conventional breast magnetic resonance imaging (MRI), including dynamic contrast-enhanced MR mammography (DCE-MRM), may lead to ambiguous diagnosis and unnecessary biopsies. Purpose: To investigate the contribution ... -
Elimination of motion and pulsation artifacts using BLADE sequences in shoulder MR imaging
Lavdas, E.; Vlychou, M.; Zaloni, E.; Vassiou, K.; Tsagkalis, A.; Dailiana, Z.; Fezoulidis, I. (2015)Objectives: To evaluate the ability of proton-density with fat-suppression BLADE (proprietary name for periodically rotated overlapping parallel lines with enhanced reconstruction in MR systems from Siemens Healthcare, ... -
Elimination of motion, pulsatile flow and cross-talk artifacts using blade sequences in lumbar spine MR imaging
Lavdas, E.; Mavroidis, P.; Kostopoulos, S.; Glotsos, D.; Roka, V.; Koutsiaris, A. G.; Batsikas, G.; Sakkas, G. K.; Tsagkalis, A.; Notaras, I.; Stathakis, S.; Papanikolaou, N.; Vassiou, K. (2013)The purpose of this study is to evaluate the ability of T2 turbo spin echo (TSE) axial and sagittal BLADE sequences in reducing or even eliminating motion, pulsatile flow and cross-talk artifacts in lumbar spine MRI ... -
How reliable is MRCP with an SS-FSE sequence at 3.0 T: comparison between SS-FSE BH and 3D-FSE BH ASSET sequences
Lavdas, E.; Vlychou, M.; Arikidis, N.; Kapsalaki, E.; Roka, V.; Arvanitis, D. L.; Fezoulidis, I.; Vassiou, K. (2013)Purpose: The purpose of the present study was to evaluate the visibility and the image quality of the biliary and pancreatic duct system on magnetic resonance cholangiopancreatography (MRCP) images based on two breath-hold ... -
Hypoxia upregulates the expression of the O-linked N-acetylglucosamine containing epitope H in human ependymal cells
Arvanitis, L. D.; Vassiou, K.; Kotrotsios, A.; Sgantzos, M. N. (2011)Epitope H contains an O-linked N-acetylglucosamine (O-GlcNAc) residue in a specific conformation and/or environment recognized by mouse IgM monoclonal antibody H (mabH). Epitope H is present in several types of cells and ... -
Imaging modalities for renal artery stenosis in suspected renovascular hypertension: Prospective intraindividual comparison of color Doppler US, CT angiography, GD-enhanced MR angiography, and digital substraction angiography
Rountas, C.; Vlychou, M.; Vassiou, K.; Liakopoulos, V.; Kapsalaki, E.; Koukoulis, G.; Fezoulidis, I. V.; Stefanidis, I. (2007)The aim of the study was to evaluate the diagnostic accuracy of Color Doppler US, CT Angiography (CTA), and GD-enhanced MR Angiography (MRA) compared with digital subtraction angiography (DSA) for the detection of renal ... -
Imaging of traumatic lesions of abdominal viscera
Vassiou, K.; Fezoulidis, I. (2002)Trauma to the abdomen accounts for approximately 10% of trauma deaths. The injury may be blunt or penetrating. Abdominal organs are frequently injured from blunt trauma. Rapid acceleration-deceleration of abdominal viscera ... -
Incidental non-cardiac findings of a coronary angiography with a 128-slice multi-detector CT scanner: Should we only concentrate on the heart?
Lazoura, O.; Vassiou, K.; Kanavou, T.; Vlychou, M.; Arvanitis, D. L.; Fezoulidis, I. V. (2010)Objective: To evaluate the spectrum, prevalence, and significance of incidental non-cardiac findings (INCF) in patients referred for a non-invasive coronary angiography using a 128-slice multi-detector CT (MDCT). Materials ... -
A method for limiting pitfalls in the production of enhancement kinetic curves in 3T dynamic magnetic resonance mammography
Lavdas, E.; Mavroidis, P.; Roka, V.; Arikidis, N.; Arvanitis, D. L.; Fezoulidis, I. V.; Vassiou, K. (2012)Purpose: The aim of the present study is to investigate means for the reduction or even elimination of enhancement kinetic curve errors due to breast motion in order to avoid pitfalls and to increase the sensitivity and ... -
A modified Seeded Region Growing algorithm for vessel segmentation in breast MRI images for investigating the nature of potential lesions
Glotsos, D.; Vassiou, K.; Kostopoulos, S.; Lavdas, E.; Kalatzis, I.; Asvestas, P.; Arvanitis, D. L.; Fezoulidis, I. V.; Cavouras, D. (2014)The role of Magnetic Resonance Imaging (MRI) as an alternative protocol for screening of breast cancer has been intensively investigated during the past decade. Preliminary research results have indicated that gadolinium-agent ... -
Multiple retained acupuncture needle fragments
Vassiou, K.; Kelekis, N. L.; Fezoulidis, I. V. (2003) -
Myocardial bridging evaluated with 128-multi detector computed tomography coronary angiography
Lazoura, O.; Kanavou, T.; Vassiou, K.; Gkiokas, S.; Fezoulidis, I. V. (2010)Purpose: The aim of the study was to evaluate the prevalence, length, depth, and location of myocardial bridging of the coronary arteries using 128-multi detector computed tomography coronary angiography. Methods: The study ...