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Ultraschall in der Medizin

Eran Ashwal, Asaf Achiron, Yinon Gilboa, Michal Berkenstadt, Mordecai Rosner, Reuven Achiron
Purpose To report and review our experience with antenatal evaluation for fetuses diagnosed with congenital cataract. Materials and Methods We retrospectively identified pregnancies diagnosed with fetal cataract during antenatal ultrasound. Evaluation of fetal eyes included intraocular anatomy and biometry. Data on fetal malformations, serology and fetal karyotype were collected. Results 8 cases, identified over the course of 10 years, were reviewed. Week 15 was the mean time for diagnosis (range 11 - 34)...
December 21, 2016: Ultraschall in der Medizin
S Tercanli, F Prüfer
Both in routine diagnostics and detailed, highly specialized workups, major advances have been observed in many areas of ultrasound due to an increase in expertise and improved technology in recent years. This is particularly true in the case of fetal neurosonography 1 2 3 4. Malformations of the CNS together with fetal heart defects are among the most common congenital anomalies. From the embryonic phase to the late third trimester, the CNS undergoes extensive development and maturation processes. The diagnosis of CNS anomalies is therefore primarily dependent on the time at which the examination is performed and the experience of the examiner...
December 2016: Ultraschall in der Medizin
S Tercanli, P Itin, P Weber
No abstract text is available yet for this article.
December 2016: Ultraschall in der Medizin
A Rempen, R Chaoui, M Häusler, K-O Kagan, P Kozlowski, C von Kaisenberg, J Wisser
No abstract text is available yet for this article.
December 2016: Ultraschall in der Medizin
U Walter, S J Schreiber, M Kaps
Extra- and transcranial sonography of brain-supplying arteries is accepted worldwide in brain death protocols as a valid "ancillary" method of proving brain circulatory arrest. Color-coded duplex sonography and CT angiography have been newly incorporated in the fourth update of the German Medical Association's guidelines for the determination of the irreversible cessation of brain function ("brain death"), effective July 2015. The updated guidelines address in more detail the diagnostic procedures and the required qualifications of the examiners...
December 2016: Ultraschall in der Medizin
D Školoudík, P Bártová, J Mašková, P Dušek, J Blahuta, K Langová, U Walter, R Herzig
Purpose: Transcranial B-mode sonography (TCS) of brain parenchyma is increasingly used as a diagnostic tool for movement disorders. Accordingly, experimental B-Mode Assist software was developed to enable digitized analysis of the echogenicity of predefined brain regions. The aim of the study was to assess the reproducibility of digitized TCS image analysis of the insula. Materials and Methods: A total of 130 patients with an indication for neurosonological examination were screened for participation in the study...
December 2016: Ultraschall in der Medizin
B Schellhaas, D Wildner, L Pfeifer, R S Goertz, A Hagel, M F Neurath, D Strobel
Purpose: To develop a contrast-enhanced ultrasound algorithm (LI-RADS-CEUS = liver imaging reporting and data system with contrast-enhanced ultrasound) for the diagnosis of hepatocellular carcinoma (HCC) in patients at risk. Materials and Methods: A CEUS algorithm (LI-RADS-CEUS) was designed analogously to CT- and MRI-based LI-RADS. LI-RADS-CEUS was evaluated retrospectively in 50 patients at risk with confirmed HCC or non-HCC lesions (test group) with subsequent validation in a prospective cohort of 50 patients (validation group)...
December 2016: Ultraschall in der Medizin
F Knieling, D Strobel, O Rompel, M Zapke, C Menendez-Castro, M Wölfel, J Schulz, W Rascher, J Jüngert
Purpose: To investigate the spectrum, applicability and diagnostic capacity of intravenous contrast-enhanced ultrasound imaging (CEUS) in a pediatric population. Materials and Methods: From 08/2005 to 11/2015, n = 40 pediatric patients and young adults from 0 - 26 years (Ø 11.4 ± 7.5) and 3.0 - 85.3 kg (Ø 40.8 ± 25.6) with n = 55 investigations received n = 79 IV applications of ultrasound contrast agent (UCA). UCA dose and side effects were documented. Scanned organs were the liver (n = 42), spleen (n = 9), kidney (n = 3), and testis (n = 1)...
December 2016: Ultraschall in der Medizin
I Gat, O Bar Yosef, C Hoffmann, O Lebovitz, D Shashar, Y Gilboa, I Yagel, R Achiron, E Katorza
Purpose: Talipes equinovarus (TEV) is a common birth defect. Differentiation between isolated and complex TEV is fundamental due to its effect on prognosis. Association between TEV and poor neurological outcome is more prominent in complex cases and highlights the significance of brain evaluation. The aim of the current study was to evaluate the contribution of fetal brain MRI to sonographic evaluation. Materials and Methods: In this retrospective study we evaluated charts of all pregnant patients referred for fetal brain MRI due to fetal TEV between 1/1/2011 and 12/31/14 in a single tertiary referral center...
December 2016: Ultraschall in der Medizin
A M Rüland, C Berg, U Gembruch, A Geipel
Purpose: The clinical use of detailed fetal neurosonography has increased over the past decade. This retrospective study explored the spectrum and frequency of different forms of corpus callosum anomalies (CCAs) in a level III center setting. Materials and Methods: Between 1999 and 2012, 48 907 detailed second and third trimester scans were performed. Among them, 140 (0.29 %) cases of CCA were diagnosed. We differentiated between complete and partial agenesis, hypoplastic corpus callosum (CC) and isolated and non-isolated forms...
December 2016: Ultraschall in der Medizin
M X Yuan, R Li, X H Zhang, C L Tang, Y L Guo, D Y Guo, M K Luo
Purpose: To investigate the factors that influence the enhancement patterns of intrahepatic cholangiocarcinomas (ICC) on contrast-enhanced ultrasound (CEUS) and analyze the correlations between the enhancement patterns on CEUS and pathological findings. Materials and Methods: Ninety-six patients with 96 pathologically confirmed ICCs underwent CEUS. CEUS images were retrospectively evaluated for tumor enhancement patterns in the arterial, portal and late phases. The arterial enhancement patterns were correlated with clinicopathological factors...
December 2016: Ultraschall in der Medizin
D Chauvet, M Imbault, L Capelle, C Demene, M Mossad, C Karachi, A-L Boch, J-L Gennisson, M Tanter
Purpose: Objective Shear wave elastography (SWE) enabled living tissue assessment of stiffness. This is routinely used for breast, thyroid and liver diseases, but there is currently no data for the brain. We aim to characterize elasticity of normal brain parenchyma and brain tumors using SWE. Materials and Methods: Patients with scheduled brain tumor removal were included in this study. In addition to standard ultrasonography, intraoperative SWE using an ultrafast ultrasonic device was used to measure the elasticity of each tumor and its surrounding normal brain...
December 2016: Ultraschall in der Medizin
L Spinedi, M Aschwanden, P Broz, S Imfeld, T Baldi, K Jaeger, D Staub, H Uthoff
Part one addressed the value of duplex ultrasound in the diagnostic workup of varicosis. The present article discusses the use of preinterventional, intrainterventional and postinterventional duplex ultrasound in endoluminal methods for the treatment of varices. It is a prerequisite for the planning, implementation, and follow-up of this form of therapy.
October 13, 2016: Ultraschall in der Medizin
A K Keränen, M Haapea, T Rissanen
Purpose: To assess the visibility of breast micro-calcifications using ultrasonography (US) and the accuracy and clinical usefulness of vacuum-assisted biopsy (VAB) using US guidance (USVAB) as compared to stereotactic guidance (SVAB). Materials and Methods: The study material comprised 158 retrospectively reviewed micro-calcification cases examined with US before VAB. The pre-biopsy US positivity frequency distributions were calculated, and the sensitivity, specificity and accuracy of VAB determined by comparing VAB histology with the surgical pathology or a 12-month follow-up...
October 2016: Ultraschall in der Medizin
P S Sidhu
In these days of political vagueness, to use a kinder term, although many would describe the situation as turmoil, in Europe, there are success stories to be lauded. Notwithstanding the direction individual countries choose in relation to closer or not so close co-operation in Europe and the direction the political agenda will travel over the next few years, I believe science and in particular medicine has benefited enormously form close co-operation across the European Union and with colleagues outside this political and trading block of nations...
October 2016: Ultraschall in der Medizin
V Cantisani, E David, P S Sidhu, B Sacconi, A Greco, F Pandolfi, M Tombolini, L Lo Mele, F Calliada, L Brunese, C Catalano, M De Vincentiis, N Di Leo, G Ascenti, F D'Ambrosio
High-resolution ultrasound (US), as a readily available, cost-effective and harmless imaging technique, is appropriately the initial imaging modality for salivary gland lesions. Benign tumors are reported to present with regular and well-defined margins, a homogeneous hypoechoic structure and demarcated vessel distribution, whereas malignant lesions are irregular, heterogeneous and diffusely perfused. Ultrasound and color Doppler features of benign and malignant salivary gland lesions overlap, and many benign tumors, particularly pleomorphic adenomas, may appear irregularly shaped, with a heterogeneous echo-structure indistinguishable from a malignant lesion...
October 2016: Ultraschall in der Medizin
L Pfeifer, R S Goertz, M F Neurath, D Strobel, D Wildner
Purpose: The aim of this study was to evaluate whether acoustic radiation force impulse (ARFI) elastography done with the 4C1 probe yields comparable results to the recently introduced 6C1HD probe. Materials and Methods: Measurements with the 4C1 and 6C1HD probes (Acuson S2000) were performed and compared in four different inclusions of an elasticity phantom model (QA049 CIRS) as well as in the liver of healthy individuals and patients with liver cirrhosis. Results: Measurements with the 6C1HD probe were slightly higher in all phantom inclusions (8, 14, 45, 80kPA) with a mean of 1...
October 2016: Ultraschall in der Medizin
T Tongsong, F Tongprasert, K Srisupundit, S Luewan, K Traisrisilp
Purpose: To determine whether ventricular diastolic dysfunction contributes to the pathogenesis of fetal cardiac failure due to fetal anemia using fetal Hb Bart's disease as a live model and cardio-STIC-M as a diagnostic tool. Materials and Methods: Color cardio-STIC volume datasets were acquired from fetuses at risk for Hb Bart's disease during 18 - 22 weeks of gestation and normal pregnancies and pregnancies with hydrops fetalis caused by Hb Bart's disease at 28 - 32 weeks. The volumes were analyzed off-line for velocity propagation (Vp) of the right and left ventricles to assess ventricular diastolic function using color cardio-STIC-M...
October 2016: Ultraschall in der Medizin
C Jenssen, B Brkljacic, M Hocke, A Ignee, F Piscaglia, M Radzina, P S Sidhu, C F Dietrich
The sixth part of the Guidelines on Interventional Ultrasound produced under the auspices of the European Federation of Societies for Ultrasound in Medicine and Biology (EFSUMB) assesses the evidence for ultrasound guidance and assistance in vascular interventions. Based on convincing data, real-time sonographic guidance for central venous access is strongly recommended as a key safety measure. Systematic analysis of scientific literature shows that in difficult situations and special circumstances US guidance may also improve the efficacy and safety of peripheral venous and arterial access and endovascular interventions...
October 2016: Ultraschall in der Medizin
S D Hajdu, L de Leval, J Y Meuwly
No abstract text is available yet for this article.
October 2016: Ultraschall in der Medizin
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