"Tubulofilamentous particles" has been defined as "thick" tubules, apparently distinguishable from other cytoskeletal elements, in touch-preparations from scrapie- and Creutzfeldt-Jakob disease (CJD)-infected brains. I report here that "tubulofilamentous particles" are nonspecific findings unrelated to "tubulovesicular structures" (TVS) which are the only particles consistently observed in brai...

We evaluated the effectiveness of color and spectral Doppler examination of the ovarian vasculature flow, using transvaginal sonography (TVS) in 65 women prior to laparoscopy due to suspected ovarian torsion. There were 15 cases of ovarian torsion. In all of them, a pathology was detected by the color and spectral Doppler examination. Of the 50 patients without torsion at laparoscopy, one had a...

AIM To determine whether introducing three-dimensional (3D) ultrasonography with power Doppler facilities as a secondary screening test, preceded by annual transvaginal grayscale ultrasonography (TVUS) (followed by transvaginal color Doppler (TVCD) in selected cases) as a primary screening test for ovarian cancer improves the accuracy of ovarian cancer screening studies. METHODS Annual TVUS w...

In this study the optimization of the biogas yield from anaerobic co-digestion of manures and energy crops was carried out using four pilot scale CSTRs under different operating conditions. The effect on biogas yield of the partial substitution of energy crops with agro-waste was also investigated. For each substrate used during the continuous trials, BMP batch assays were also carried out to v...

It is known that a real valued measure (1) on the a-ring of Baire sets of a locally compact Hausdorff space, or (2) on the Borel sets of a complete separable metric space is regular. Recently Dinculeanu and Kluvanek used regularity of non-negative Baire measures to prove that any Baire measure with values in a locally convex Hausdorff topological vector space (TVS) is regular. Subsequently a di...

CONTEXT Dyad practice may be as effective as individual practice during clinical skills training, improve students' confidence, and reduce costs of training. However, there is little evidence that dyad training is non-inferior to single-student practice in terms of skills transfer. OBJECTIVES This study was conducted to compare the effectiveness of simulation-based ultrasound training in pair...

the prolonged retention of fetal bone structure is an uncommon condition after a previous abortion. we describe two cases with fetal bone fragment amongst 3589 hysteroscopies (0.05%) who had no complaint other than secondary infertility. in both patients hyperechogenic areas were found through transvaginal ultrasound and the bones were removed by hysteroscopy. despite meticulous evaluation duri...

PURPOSE: To evaluate the treatment outcome of tubo-ovarian abscesses managed by transvaginal ultrasound-guided aspiration. METHODS: Descriptive analysis of all patients with tubo-ovarian abscesses treated with a minimally invasive procedure, ultrasound-guided drainage, at the Department of Gynecology, Centro Hospitalar Vila Nova de Gaia/ Espinho, during a period of 5 years (from June 2009 to Ju...

The advent of high-resolution transvaginal ultrasound (TVS) has revolutionized our understanding of the pathophysiology and the management of early pregnancy failure. Knowledge of the ultrasound appearances of normal early pregnancy development and a good understanding of its pitfalls are essential for the diagnosis and management of early pregnancy failure. Ultrasound imaging has rapidly repla...

Background Endometrial receptivity is one of parameters which determine the reproductive outcome in in vitro fertilization programs. A good blood supply towards the endometrium is usually considered to be an essential requirement for implantation. Blood vessels of the endometrium can be detected by transvaginal color and pulse Doppler sonography. Color Doppler assessment permits better visualiz...