Search results for "ULTRASOUND"

Is Hysteroscopy Better than Ultrasonography for Uterine Cavity Evaluation? An Evidence-Based and Patient-Oriented Approach

2016

Evaluation of the uterine cavity is an important part of the gynecological check, especially in symptomatic women and, over the last few decades, a number of technical and technological advancements has allowed a superb investigation of this organ. Traditionally, transvaginal ultrasound (TVUS) has been the first-line diagnostic tool for evaluating uterine diseases, also considering that gynecologists are familiar with the technique since it is included in the basic training in obstetrics and gynecology. Nevertheless, to date “office hysteroscopy” received growing attention since the development of smaller-diameter hysteroscopes which has made it possible to easily perform the hysteroscopy …

Home‐delivered ultrasound monitoring for home treatment of haemarthrosis in haemophilia A

2015

Three-dimensional helical computed tomography in prenatal diagnosis of fetal skeletal dysplasia

2013

Objectives (1) To study the use and diagnostic value, as a complement to ultrasound, of helical computed tomography (helical CT) to differentiate normal fetuses from cases of skeletal dysplasia; (2) to define the most relevant indications for helical CT; and (3) to evaluate its diagnostic performance with respect to radiological criteria considered discriminatory. Methods This was a retrospective study from 2005 to 2008 in 67 pregnant women who underwent helical CT after 26 weeks of gestation for suspected fetal skeletal dysplasia due to fetal shortened long bones on ultrasound (≤ 10thpercentile), either alone or associated with other bone abnormalities. The results were compared with pedia…

OC005: Ultrasound bioeffects: Quantification of cellular damage in animal fetal liver after use of Doppler pulse to measure ductus venosus

2008

F75Determining fetal lung volume using three-dimensional-ultrasonography

2000

Background The aim of the study was to establish fetal lung, thoracic and heart volume nomograms using 3D-ultrasonography. Method For this purpose 115 fetuses were examined (between 18 and 33 weeks of gestation) using Voluson 530D (Kretztechnik, Austria) ultrasound device and 5 MHZ three-dimensional annular volume transducer. Lung volumes of 15 fetuses suffering from skeletal dysplasia, renal agenesis or hydrothorax and secondary pulmonary hypoplasia were compared with previously established nomograms. Results Lung volumes in the pathologic group of fetuses compared to the nomograms were below the 5% for gestational age. Conclusion The encouraging first results suggest that this method coul…

OC133: Natriuretic peptide levels in IUGR fetuses with absent and reversed enddiastolic flow of the umbilical artery in relation to ductus venosus fl…

2003

3-D ultrasound in prenatal diagnosis

1999

Abstract 2-D ultrasonography has evolved into an excellent technique in prenatal diagnosis during the past 40 years. The fact remains, however, that 2-D ultrasonography is marked by a lack of ability to provide more than a 2-D demonstration of a 3-D fetus. Although many fetal anomalies are detectable by conventional 2-D ultrasound, it is impossible to demonstrate a defect in the third dimension. 3-D sonography not only offers the third plane, but it also provides the examiner with different viewing modes: the multiplanar, the surface and the transparent demonstration of the fetus. The different viewing modes not only improve the accuracy in detecting fetal malformations, but also serve to d…

Sphincter damage during fistulotomy for perianal fistulae and its relationship with faecal incontinence.

2021

Abstract Background The length of sphincter which can be divided during fistulotomy for perianal fistula is unclear. The aim was to quantify sphincter damage during fistulotomy and determine the relationship between such damage with symptoms and severity of faecal incontinence and long-term quality of life (QOL). Methods A prospective cohort study was performed over a 2-year period. Patients with intersphincteric and mid to low transsphincteric perianal fistulas without risk factors for faecal incontinence were scheduled for fistulotomy. All patients underwent 3D endoanal ultrasound (3D-EAUS) pre-operatively and 8 weeks postoperatively. Measurements were taken of pre- and postoperative anal…

Dysphagie ohne klinisch erkennbares pathologisches Korrelat: Zum Ausschluss eines Tumorgeschehens des Mundbodens und des Zungengrundes ist die Ultras…

2001

In patients suffering from dysphagia, a tumour of the tongue and its base must be excluded. This is not always possible by means of endoscopy and palpation. In contrast it is possible to visualize deep-seated structures of this region by ultrasound. Unfortunately, this technique is rarely used, as shown in the cases demonstrated. We present five patients suffering from dysphagia for a long period of time (up to 30 years) where ultrasound was not performed and a tumour of the floor of the mouth and the base of the tongue was overlooked. Thus, adequate therapy was delayed, which proved to be especially relevant in three patients suffering from a malignoma. Three patients suffered from a malig…

Discrimination of early/intermediate and advanced/complicated coronary plaque types by radiofrequency intravascular ultrasound analysis

2002

Radiofrequency intravascular ultrasound (IVUS-RF) analysis, as an extension of conventional IVUS imaging, may provide more accurate plaque discrimination. Thirty-two autopsy atherosclerotic coronary arteries were investigated. Corresponding sectors in different plaques were matched by histologic and RF analysis. Histologic analysis utilized the American Heart Association plaque classification. The backscattered ultrasound RF signal was analyzed by fast-Fourier transform, providing the underlying frequency components of its power spectrum. The normalized backscattered signal power (in decibels [dB]) for frequencies between 15.3 and 40.3 MHz was then measured for plaque discrimination. Advanc…