Search results for "Ultra"

The Harderian Gland of the Djungarian Hamster (<i>Phodopus sungorus</i>): Light- and Electron-Microscopical Investigations

1993

The Harderian gland of the Djungarian hamster Phodopus sungorus was investigated by light and electron microscopy in adult animals of both sexes, held under either long or short photoperiods. These glands have a tubuloalveolar structure. Epithelial cells were seen as small cylindric cells with a large, round nucleus located basally, many small vacuoles distributed throughout the cytoplasm (type I cells) or as rather broad cells with larger vacuoles (type II cells). The ratio of both cell types differed from 1:1 to 2:1 (type I:type II), regardless of the animal’s sex. In the electron microscope, abundant smooth endoplasmic reticulum of the vesicular type and rod-like or oval-shaped mitochond…

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

2015

Successful tracheal occlusion using ultrathin fetoscopic equipment combined with real-time three-dimensional ultrasound.

2008

<i>Objective:</i> The most common complication of intrauterine tracheal balloon occlusion is the preterm premature rupture of membranes (PPROM) which increases the rate of neonatal morbidity and mortality. Ultrathin fetoscopy may be a method of reducing the risk of PPROM. <i>Materials and Methods:</i> The operation was performed at the 27th week of gestation after sedation and relaxation of a fetus with bilateral congenital diaphragmatic hernia and with the liver lifted upwards into the thorax. An ultrathin sheath with a 1.2-mm fetoscope was used under real-time 3-D ultrasound guidance. The patient delivered in the 38th week of gestation and did not display PPROM aft…

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…