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Ultraschall in der Medizin

Philip Mørkeberg Nilsson, Tobias Todsen, Yousif Subhi, Ole Graumann, Christian Pallson Nolsøe, Martin Grønnebæk Tolsgaard
Purpose Ultrasound training is associated with a long learning curve and use of substantial faculty resources. Self-directed ultrasound training may decrease the need for faculty-led teaching. Mobile apps seem promising for use in self-directed ultrasound training, but no studies have examined the cost-effectiveness of mobile app-guided training versus traditional formats such as textbook-guided training. This study evaluated the cost-effectiveness of mobile app-guided versus textbook-guided ultrasound training...
September 26, 2017: Ultraschall in der Medizin
Isabel Wiesinger, Philipp Wiggermann, Nicola Zausig, Lukas P Beyer, Bernd Salzberger, Christian Stroszczynski, Ernst Michael Jung
Aim Using new perfusion software for evaluation of the success of percutaneous treatments of malignant liver tumors with CEUS. Materials and Methods Retrospective analysis of 88 patients (74 male, 14 female; 30 - 84 years) with 165 malignant liver lesions. The lesions were 57 metastases and 108 HCCs. The success of interventional treatment (IRE n = 47; RFA n = 38; MWA n = 44; TACE n = 36) was evaluated by CEUS and perfusion software (VueBox(®)). CEUS was performed after injection of 1 - 2...
September 25, 2017: Ultraschall in der Medizin
Anna Marlene Rüland, Karl-Philipp Gloning, Matthias Albig, Karl-Oliver Kagan, Rüdiger Hammer, Michael Schälike, Christoph Berg, Ulrich Gembruch, Annegret Geipel
Purpose To establish the prevalence of chromosomal aberrations in fetuses with an apparently isolated agenesis of the corpus callosum (ACC) on prenatal ultrasound. Materials & Methods This was a retrospective study of complete isolated ACC at the time of ultrasound evaluation with respect to karyotype information. Within this group, a subgroup with non-malformation minor abnormalities, such as a single umbilical artery (SUA), polyhydramnios or fetal growth restriction (FGR), was investigated. Results Complete ACC was diagnosed in 343 cases...
September 25, 2017: Ultraschall in der Medizin
Markus Hoopmann, Karl Oliver Kagan
The midsagittal view of the fetal profile is essential in first trimester screening at 11 + 0 to 13 + 6 weeks of gestation. None of the standard sections in prenatal medicine is as well defined and undergoes such a strong quality assurance program. These requirements were recently challenged by the introduction of cell-free DNA screening. The fetal profile view was previously only needed for the appropriate measurement of the fetal nuchal translucency thickness. In recent years, it became evident that there are many more anomalies or markers for fetal defects that can be seen in this section such as spina bifida, facial clefts or retrognathia...
September 21, 2017: Ultraschall in der Medizin
Brigitte Strizek, Aikaterini Zamprakou, Ingo Gottschalk, Maria Roethlisberger, Astrid Hellmund, Andreas Müller, Ulrich Gembruch, Annegret Geipel, Christoph Berg
Purpose To assess the anatomic variants, associated anomalies and postnatal outcome of fetuses with a prenatally diagnosed agenesis of ductus venosus (ADV). Materials and Methods Retrospective study of 119 cases with agenesis of ductus venosus diagnosed by prenatal ultrasound in two tertiary referral centers from 2006 to 2014. The type and location of the umbilical venous drainage site was noted. Charts were reviewed for associated structural or chromosomal anomalies, pregnancy outcome and postnatal course...
September 21, 2017: Ultraschall in der Medizin
Noam Smorgick, Ayala Krakov, Ron Maymon, Moshe Betser, Josef Tovbin, Moty Pansky
Purpose To investigate whether ultrasound follow-up for the detection of postpartum retained products of conception (RPOC) in women considered at risk for this condition may allow for early diagnosis. Methods Parturients at risk for RPOC underwent an ultrasound exam on the second postpartum day. Based on the ultrasound findings, women were either: (1) discharged to routine postpartum care in cases of normal scans, (2) invited for follow-up in cases of abnormal scans. We retrospectively analyzed the rates of women requiring uterine evacuation due to persistent abnormal scans...
September 21, 2017: Ultraschall in der Medizin
Andrew Evans, Patsy Whelehan, Alastair Thompson, Colin Purdie, Lee Jordan, Jane Macaskill, Shelley Waugh, Frances Fuller-Pace, Katrin Brauer, Sarah Vinnicombe
Background Prediction of pathological complete response (pCR) of primary breast cancer to neoadjuvant chemotherapy (NACT) may influence planned surgical approaches in the breast and axilla. The aim of this project is to assess the value of interim shear wave elastography (SWE), ultrasound (US) and magnetic resonance imaging (MRI) after 3 cycles in predicting pCR. Methods 64 patients receiving NACT had baseline and interim US, SWE and MRI examinations. The mean lesion stiffness at SWE, US and MRI diameter was measured at both time points...
September 21, 2017: Ultraschall in der Medizin
Evelyne Meys, Iris Rutten, Roy Kruitwagen, Brigitte Slangen, Sandrina Lambrechts, Helen Mertens, Ernst Nolting, Dieuwke Boskamp, Toon Van Gorp
Objectives To analyze how well untrained examiners - without experience in the use of International Ovarian Tumor Analysis (IOTA) terminology or simple ultrasound-based rules (simple rules) - are able to apply IOTA terminology and simple rules and to assess the level of agreement between non-experts and an expert. Methods This prospective multicenter cohort study enrolled women with ovarian masses. Ultrasound was performed by non-expert examiners and an expert. Ultrasound features were recorded using IOTA nomenclature, and used for classifying the mass by simple rules...
August 23, 2017: Ultraschall in der Medizin
Christopher Pivec, Tarvo Sillat, Thomas Moritz, Georg Riegler, Josif Nanobachvili, Gerd Bodner
No abstract text is available yet for this article.
October 2017: Ultraschall in der Medizin
Karl-Heinz Deeg
Children are particularly at risk for stroke in the neonatal period. Neonatal hemorrhagic stroke is rarer than ischemic stroke. The incidence is 40.7/100 000 live births. Hemorrhagic stroke is caused by a disruption in venous drainage usually due to local thrombosis. As a result of the nonspecific clinical symptoms in this age group, diagnosis is usually made too late. The only relatively specific symptom is a cerebral seizure during the first week of life. Therefore, stroke should be ruled out by diagnostic imaging in the case of any seizure in the first days of life...
October 2017: Ultraschall in der Medizin
Hazel M Edwards, Paul S Sidhu
No abstract text is available yet for this article.
October 2017: Ultraschall in der Medizin
Chanane Wanapirak, Supatra Sirichotiyakul, Suchaya Luewan, Kasemsri Srisupundit, Fuanglada Tongprasert, Theera Tongsong
Objective To determine the timeline of the first appearance of an increased CT ratio of fetuses with hemoglobin (Hb) Bart's disease. Materials and Methods A prospective longitudinal study was conducted on pregnancies at risk for fetal Hb Bart's disease. Sonographic markers including cardiothoracic (CT) ratio and middle cerebral artery peak systolic velocity (MCA-PSV) were serially assessed and recorded from the first trimester. The definite diagnosis of fetal Hb Bart's disease based on DNA analysis (CVS), or fetal Hb typing (HPLC; cordocentesis) was performed at the first appearance of an increased CT ratio...
October 2017: Ultraschall in der Medizin
Andrea Dall'Asta, Nicola Volpe, Letizia Galli, Tiziana Frusca, Tullio Ghi
No abstract text is available yet for this article.
October 2017: Ultraschall in der Medizin
Matthias Zeiler, Luca Zanoli, Rosalia Viviana Scarfia, Stefano Santarelli, Antonio Granata
Background Malfunction of the peritoneal dialysis catheter is frequently caused by dislocation. The diagnostic approach is classically based on abdomen X-ray together with detailed case history and physical examination. Despite being rarely applied in clinical practice to evaluate catheter misplacement, ultrasound is a noninvasive, radiation-free technique that is potentially useful also to explore reasons for catheter malfunction. Consequently, we aimed to evaluate the diagnostic accuracy of ultrasound to identify peritoneal catheter misplacement...
October 2017: Ultraschall in der Medizin
Silvia Mongodi, Bélaïd Bouhemad, Anita Orlando, Andrea Stella, Guido Tavazzi, Gabriele Via, Giorgio Antonio Iotti, Antonio Braschi, Francesco Mojoli
Purpose Lung Ultrasound Score (LUSS) is a useful tool for lung aeration assessment but presents two theoretical limitations. First, standard LUSS is based on longitudinal scan and detection of number/coalescence of B lines. In the longitudinal scan pleura visualization is limited by intercostal space width. Moreover, coalescence of B lines to define severe loss of aeration is not suitable for non-homogeneous lung pathologies where focal coalescence is possible. We therefore compared longitudinal vs. transversal scan and also cLUSS (standard coalescence-based LUSS) vs...
October 2017: Ultraschall in der Medizin
Jeire Steinbuch, Anouk C van Dijk, Floris H B M Schreuder, Martine T B Truijman, Alexandra A J de Rotte, Paul J Nederkoorn, Aad van der Lugt, Evelien Hermeling, Arnold P G Hoeks, Werner H Mess
Purpose Inhomogeneity of arterial wall thickness may be indicative of distal plaques. This study investigates the intra-subject association between relative spatial intima-media thickness (IMT) inhomogeneity of the common carotid artery (CCA) and the degree of stenosis of plaques in the internal carotid artery (ICA). Materials and Methods We included 240 patients with a recent ischemic stroke or transient ischemic attack and mild-to-moderate stenosis in the ipsilateral ICA. IMT inhomogeneity was extracted from B-mode ultrasound recordings...
October 2017: Ultraschall in der Medizin
Alessandro Cucchetti, Matteo Cescon, Antonio Colecchia, Flavia Neri, Alberta Cappelli, Matteo Ravaioli, Federico Mazzotti, Giorgio Ercolani, Davide Festi, Antonio Daniele Pinna
Purpose Liver stiffness (LS) has been shown to be of use in chronic liver disease patients but its utility in surgical judgment still needs to be proven. A decision-making approach was applied to evaluate whether LS measurement before surgery of hepatocellular carcinoma (HCC) can be useful in avoiding post-hepatectomy liver failure (PHLF). Materials and Methods Decision curve analysis (DCA) was applied to 202 HCC patients (2008 - 14) with LS measurement prior to hepatectomy to verify whether the occurrence of PHLF grades B/C should be reduced through a decision-making approach with LS...
October 2017: Ultraschall in der Medizin
Sebastian Harth, Christopher Behrens, Fritz Christian Roller, Gerhard Ferdinand Peter Alzen, Gabriele Anja Krombach
Purpose To analyze referral indications, imaging findings and diagnoses in breast sonography in a division of pediatric radiology. Materials and Methods Breast ultrasound examinations of 270 patients were analyzed for referral reasons, imaging findings and final diagnoses (152 females, 118 males). The mean age of the patients was 8.8 years (range, 6 days-18 years). Each breast was examined systematically in two orthogonal probe orientations. Pathological findings were documented on two orthogonal imaging planes...
October 2017: Ultraschall in der Medizin
Kai Bürkel, Ursula Krämer, Mareike Möllers, Maria Karina Falkenberg, Walter Klockenbusch, Ralf Schmitz
Purpose New 3 D technologies like xMatrix probes promise superiority over conventional mechanical probes and may allow a more detailed and time-saving prenatal diagnosis. In a comparison study we evaluate fetal ears. The aim of our study was to compare the following aspects of both techniques: (1) ultrasound detail resolution, (2) raw data acquisition time (AT) and (3) influence of covariates. Materials and Methods 3 D raw data volumes of the fetal ear were collected with the V6 - 2 (V6) and with the xMatrix (X6) probe and were stored after offline customization to a single picture...
October 2017: Ultraschall in der Medizin
Ann Thuring, Karin Källén, K Jonas Brännström, Tomas Jansson, Karel Maršál
Purpose To investigate the predictive capacity of a new method for sound spectrum analysis of Doppler signals recorded from the umbilical artery in high-risk pregnancies. Material and Methods The retrospective study comprised 127 pregnant women with various pregnancy complications between 23 and 39 gestational weeks. Umbilical artery blood flow velocity waveforms were recorded with Doppler ultrasound and characterized by pulsatility index (PI) and blood flow class (BFC). Doppler audio signals were stored on a digital video recorder and the sound frequency at the energy level 15 dB below its peak (MAXpeak-15 dB) was estimated off-line...
October 2017: Ultraschall in der Medizin
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