Search results for "Sound"

Rhinoconjunctivitis and wheeze in preschool children: a different relationship than in adults (United or Coexistent Airways Disease)?

2007

Maxillary sinus lift performed using ultrasound. Evaluation of 21 patients.

2008

Purpose: The aim of the present study was to evaluate the sinus membrane perforations that occurred during a sinus lift procedure using the ultrasound technique, and to evaluate the bone gain obtained. Materials and methods: In 21 patients, 26 sinus lifts were performed using ultrasound and filled with bone graft material. The bone height and the bone gain obtained were observed in postoperative orthopantomographs, correcting for previous distortion. Results: Of the 26 maxillary sinus lifts, 4 Schneiderian membrane perforations were observed. The average bone height prior to the intervention was 3.5 mm (scale 0.6- 8.7 mm ) and the average postsurgical bone height was 10.8 mm (scale 7.5- 15.…

Enhancement pattern of small hepatocellular carcinoma (HCC) at contrast-enhanced US (CEUS), MDCT, and MRI: intermodality agreement and comparison of …

2012

OBJECTIVE:To evaluate agreement between contrast-enhanced ultrasound (CEUS), multi-detector row computed tomography (MDCT) and magnetic resonance imaging (MRI) for the assessment of typical and atypical enhancement patterns of small hepatocellular carcinoma (HCC); and to compare diagnostic sensitivity of 2005 and 2010 American Association for the Study of Liver Diseases (AASLD) guidelines. MATERIALS AND METHODS: Between January 2008 and December 2009, we included cirrhotic patients with newly diagnosed 10-20 mm HCC imaged at two contrast-enhanced imaging techniques among CEUS, MDCT, and MRI. Dynamic studies were reviewed by two radiologists to assess enhancement pattern. Percentage of cases…

Cost analysis of recall strategies for non-invasive diagnosis of small hepatocellular carcinoma.

2010

Abstract Background Which is the least expensive recall policy for nodules in the cirrhotic liver remains unclear. Aim Aim of the study was to analyze the costs of different recall diagnostic strategies of hepatocellular carcinoma (HCC) on cirrhosis on a real series of patients. Methods 75 consecutive small liver nodules (10–30 mm) detected at conventional ultrasonography in 60 patients with cirrhosis were submitted to contrast-enhanced ultrasound, computed tomography and gadolinium-magnetic resonance imaging with a final diagnosis established according to the latest guidelines which include different strategies for nodules 10–19 mm or ≥20 mm. The actual costs required to fully characterise…

Polycystic ovarian syndrome: assessment with color Doppler angiography and three-dimensional ultrasonography.

1999

We conducted a three-dimensional ultrasonographic evaluation of the size and structure of the ovaries of women who had clinical and biochemical findings suggestive of polycystic ovary syndrome. We carried out a comparative color Doppler frequency and color Doppler amplitude study of the vascular patterns of these ovaries. This study involved 65 women of reproductive age with polycystic ovary syndrome and 25 eumenorrheic women who were not taking hormonal contraceptives and who had a body mass index below 25 kg/m2. Compared to controls, women with polycystic ovary syndrome had larger ovaries and thicker stroma, increased impedance in the uterine arteries, increased stromal vascularity with d…

Prenatal diagnosis of congenital cystic adenomatoid malformation using three-dimensional inversion rendering: A case report

2008

We report a case of a congenital cystic adenomatoid malformation of the lung (CCAM). At 12 weeks of gestation, an echogenic lung associated to a hydrothorax was detected. Despite the results of the combined test that informed of a high risk of chromosomopathy, normal karyotype was confirmed after an amniocentesis. The three-dimensional ultrasound inversion mode depicted all the cysts within the fetal lungs as opaque areas that were seen concurrently together, which was compatible with CCAM. After parental counseling, the patient opted to terminate the pregnancy at 18 weeks. Pathological analysis of the lungs confirmed the diagnosis of a CCAM type II. The recent advent of the three-dimension…

Umbilical cord cysts: evaluation with different 3-dimensional sonographic modes.

2010

Objective. The purpose of this series was to determine whether the use of different 3-dimensional (3D) sonographic modes allows better definition of umbilical cord cysts and pseudocysts in utero. Methods. Two cases of umbilical cord cysts and 1 of a pseudocyst were analyzed and compared with 2-dimensional (2D), 3D, angiopower Doppler, tomographic ultrasound imaging (TUI), virtual organ computer-aided analysis (VOCAL), and automatic volume calculation (AVC) sonographic modes. All cases were followed during pregnancy. A karyotype analysis was also obtained. Results. Three-dimensional sonography, TUI, and VOCAL allowed clear visualization and evaluation of the sizes, locations, and numbers of …

Congenital Müllerian anomalies: diagnostic accuracy of three-dimensional ultrasound

1996

Objective To determine whether it is possible to identify and diagnose accurately Mullerian anomalies with three-dimensional (3-D) ultrasound (US). Design Controlled blinded clinical study. Setting Normal human volunteers undergoing infertility evaluation in a university hospital. Patients Forty-two patients who underwent laparoscopy and hysterosalpingography as part of their work up for infertility and were found to have either a normal uterus (30 patients) or a Mullerian abnormality (12 patients) consented to be evaluated with 3-D US by sonographers who were unaware of their infertility history or of their laparoscopy and hysterosalpingography diagnoses. Interventions Transvaginal 3-D US …

Negative biopsy of focal hepatic lesions: Decision tree model for patient management

2019

OBJECTIVE. The purpose of this study was to investigate patient- and procedure-related variables affecting the false-negative rate of ultrasound (US)-guided liver biopsy and to develop a standardized patient-tailored predictive model for the management of negative biopsy results. MATERIALS AND METHODS. We retrospectively included 389 patients (mean age ± SD, 62 ± 12 years old) who had undergone US-guided liver biopsy of 405 liver lesions between January 1, 2013, and June 30, 2015. We collected multiple patient- and procedure-related variables. By comparing pathology reports of biopsy and the reference standard (further histology or imaging follow-up), we were able to categorize the biopsy r…

Preterm birth: incidence, risk factors and second trimester cervical length in a single center population. A two-year retrospective study

2017

To report the incidence and the major risk factors (RFs) associated with preterm birth (PTB), combining both maternal RFs and cervical length (CL), and to understand if cervical length measurement is really useful in all the patients.The study population consisted of 2048 women admitted to the Department of Obstetrics and Gynecology, University Hospital of Messina, over a 2-year period. Preterm cases represented approximately 8.64% of our total population and, exactly, 65% were late preterm, 32% were preterm, and 3% were extremely preterm.An analysis of PTB sub-categories based on gestational age showed a stronger correlation between gestational age and CL among preterm and extremely preter…