The aim of this study is to evaluate the contrast-enhanced ultrasound (CEUS) features of peritoneal metastases. Unenhanced ultrasound and CEUS were conducted in 25 patients who had confident diagnoses of peritoneal metastases after ultrasound-guided biopsies of peritoneum. B-mode sonograms, color Doppler, CEUS pattern and quantitative analysis of blood perfusion in ...

Applications of flow cytometry in pediatric cancers have expanded substantially in recent years. In acute leukemias, the commonest childhood cancer, flow cytometry can now define complex antigenic profiles that are associated with specific cytogenetic/molecular defects and can also directly identify BCR-ABL fusion protein. Flow cytometry based scoring system has been ...

BACKGROUND: Cerebrospinal fluid samples with doubtful morphologic interpretation are a common problem in the workup of patients with clinical signs for leptomeningeal disease. The authors report on the combination of morphology and flow cytometry in the diagnosis of leptomeningeal disease in patients with radiological, clinical, or cytological findings suspicious for ...

Preoperative embolization of vertebral metastases has been shown to lower intraoperative blood loss. Nevertheless, excessive up to life-threatening blood loss can occur despite embolization. We therefore decided to evaluate possible parameters for predicting significant blood loss in a surgically homogeneous group of patients with vertebral metastases. Patients with vertebral metastases ...

The purpose of this study was to describe the sonographic findings of acute vasitis. This was a retrospective analysis of 12 cases of acute vasitis. The following gray scale and color Doppler sonographic features were analyzed: location, echogenicity of the lesion, presence of hydrocele, epididymal involvement, and blood flow within ...

The objective of this report was to describe and potentially explain differences of intrarenal color Doppler sonography (CDUS) manifestations between blood flow turbulence and twinkling artifact. We retrospectively reviewed 32 cases with appearance of focally increased color Doppler signal on intrarenal CDUS from May 1, 2007, to February 28, 2009. ...

We aimed to investigate the long-term effect of microsurgical inguinal varicocelectomy on testicular blood flow using color Doppler sonography (CDS) in this observational study. A total of 30 patients clinically diagnosed with left varicocele who underwent a microsurgical inguinal varicocelectomy were examined 3 times with CDS for testicular blood flow ...

To investigate the complex appearance of vascularity of sacroiliac joint (SIJ) in ankylosing spondylitis. Sixty-eight patients and 35 controls were included in the study. Blood flow was examined at the SIJ by using color Doppler ultrasonography (CDUS). The location of color flow signs and flow pattern were observed. Arteries do ...

A new class of observables is introduced which aims to characterize the superstructure of an event, that is, features, such as color flow, which are not determined by the jet four-momenta alone. Traditionally, an event is described as having jets which are independent objects; each jet has some energy, size, ...

PURPOSE: To develop a bead-flow pattern for visualizing and comparatively quantifying fluid movement using a torsional or longitudinal ultrasound (US) phaco handpiece. SETTING: Magill Laser Center, Medical University of South Carolina, Charleston, South Carolina, USA. METHODS: Visualization and quantification of intraocular fluid dynamics were evaluated by injecting neutrally buoyant, collagen-coated ...

Objective. To determine the accuracy of ultrasound and color flow Doppler to diagnose placenta accreta. Methods. Respectively, ultrasound images consistent with signs of placenta accreta (concomitant previa, numerous vascular lacunae, absent lower uterine segment between bladder-placenta, turbulent or complicated blood flow at the uteroplacental interface) were correlated with findings at the time ...

A 4-year-old male, castrated Saint Bernard was evaluated for acute onset of lethargy and collapse. Moderately severe anemia and splenomegaly were noted. Immune mediated hemolytic anemia was initially suspected. Abdominal ultrasound demonstrated an absence of splenic blood flow. Splenic torsion was confirmed on exploratory laparotomy and a splenectomy was performed.

A new mathematical method for estimating velocity vectors from color Doppler datasets is proposed to image blood flow dynamics; this method has been called echodynamography or vector flow mapping (VFM). In this method, the concept of stream function is exploited to expand a 2-D distribution of radial velocities in polar ...

PURPOSE: No groups have yet succeeded in identifying the need for re-repair of residual shunt after surgical repair of ventricular septal defect (VSD) based on quantitative evaluation of the ratio of the pulmonary blood flow to the systemic blood flow (Qp/Qs) by transesophageal echocardiography (TEE). Hence, we studied the accuracy ...

This study was designed to validate a high-resolution method to measure regional ventilation (VA) in small laboratory animals, and to compare regional Va and perfusion (Q) before and after methacholine-induced bronchoconstriction. A mixture of two different colors of 0.04-microm fluorescent microspheres (FMS) was aerosolized and administered to five anesthetized, mechanically ...

Color stability of swine blood was studied over 12 weeks of storage in plastic bags, after pH (7.40, 6.70, or 6.00) adjustment, saturation with carbon monoxide (CO) and spray-drying. CO-treated dried blood presented a redder color and higher reflectance between 610 and 700 nm, compared to a brownish-red color and ...

Throughout history, illustrations had played a key role in the promotion and evolution of medicine by providing a medium for transmission of scientific observations. Due to religious prohibitions, color drawings of the human body did not appear in medieval Persia and during the Islamic Golden Age. This tradition, however, has ...

The goals of the present study were to measure mammary blood flow volume (BFV) during the first 12 wk of lactation in dairy cows by using color Doppler sonography and to determine what affects the mammary blood flow. Forty cows were examined via color Doppler sonography on d 1, 7, ...

Regulation of blood flow through the testicular microvasculature by vasomotion is thought to be important for normal testis function as it regulates interstitial fluid (IF) dynamics which is an important intra-testicular transport medium. Androgens control vasomotion, but how they exert these effects remains unclear. One possibility is by signalling via ...

CASE DESCRIPTION: A 13-year-old neutered female Keeshond-cross was evaluated because of a history of melena, anemia, hematemesis, vomiting, and high serum liver enzyme activities over a 1.5-year period. CLINICAL FINDINGS: Abdominal ultrasonography revealed a hyperechoic mass in the gallbladder. In the gallbladder mass itself, a distinct linear blood flow pattern ...

OBJECTIVE: The purpose of this series was to describe the transvaginal color pulsed Doppler sonographic features of epithelioid trophoblastic tumors (ETTs) and to evaluate whether there were specific sonographic criteria to accurately distinguish them from other lesions. METHODS: Seven cases of ETTs treated in the Women's Hospital of Zhejiang University ...

OBJECTIVE: To propose, in cases with coiling of the ovarian vessels, a classification of severity of torsion based on Doppler and gray-scale ultrasound findings and to suggest a treatment strategy for each situation. METHODS: Seventeen patients were examined in a gynecological emergency room between December 1995 and February 2003 due ...

OBJECTIVE: The purpose of this study was to determine the reliability of sonographic visualization of the normal extrapelvic vas deferens and to analyze its appearance and dimensions. METHODS: Scans of the scrotum and spermatic cords were obtained in 25 fertile volunteers. Identification of the vas deferens was attempted bilaterally in ...

PURPOSE: The major indication for adolescent left varicocelectomy is testicular asymmetry. However, a period of observation is often recommended preoperatively to determine if the asymmetry resolves, persists or progresses. We investigated whether varicocele grade or the duplex Doppler ultrasound measurements of peak retrograde flow and mean vein diameter could be ...

OBJECTIVE: The twinkling artifact is a color Doppler phenomenon that appears as a rapidly fluctuating red and blue Doppler signal behind a strongly reflecting medium, manifesting as a color signal but without real flow behind the structures. To the untrained eye, the twinkling artifact may lead to the misdiagnosis of ...

Aim: We report the usefulness of percutaneous color Doppler ultrasonography (CDU) for evaluating therapeutic effects on rectal varices. Methods: Ultrasonographic examination and color flow imaging were performed using a color Doppler unit (Aplio 50 or XV, Toshiba, Tokyo, Japan) with a 3.5 MHz convex probe. We performed endoscopic injection sclerotherapy ...

OBJECTIVE: To assess the vascular effects of detomidine and xylazine in pony mares and heifers, respectively, as determined in a major artery and by extent of vascular perfusion of reproductive organs. ANIMALS: 10 pony mares and 10 Holstein heifers. PROCEDURES: Pony mares were assigned to receive physiologic saline (0.9% NaCl) ...

OBJECTIVE: To evaluate the role of thyroid blood flow assessment by color-flow Doppler ultrasonography in the differential diagnosis of thyrotoxicosis. METHODS: Consecutive patients with thyrotoxicosis presenting to our center between June 2007 and March 2008 were included in the study. Clinical data were collected, and thyroid function tests including measurements ...

BACKGROUND: Real-time 3-dimensional color Doppler echocardiographic (RT3DE) imaging has recently been demonstrated to provide accurate direct measurement of vena contracta area (VCA). The quantification of mitral regurgitant (MR) flow directly at the lesion using color Doppler echocardiography, however, has been prevented because of multiple aliasing from high flow velocities. Recent ...

OBJECTIVE: The purpose of this series was to evaluate the role of spectral Doppler and color flow Doppler sonography in the evaluation of partial testicular torsion. METHODS: Eight cases of partial testicular torsion, diagnosed on the basis of abnormal spectral Doppler waveforms or abnormal color flow Doppler findings, were retrospectively ...

BACKGROUND: Infrared endoscopy is used to visualize vessels in the GI tract. By applying this system, we developed a new method to visualize a bleeding point during endoscopic resection. OBJECTIVE: This study aimed to evaluate the ability of infrared endoscopy to detect a bleeding point during endoscopic resection and to ...

We studied the use of color Doppler ultrasonography for ureteral patency after placement of a transvaginal Doppler-guided uterine artery occlusion device before organ-preserving surgery for leiomyomata uteri. Our case series involved 7 patients in whom ureteral flow was assessed using color Doppler sonography before and after placement of a Doppler-guided ...

Idiopathic testicular infarction without torsion of spermatic cord is a rare condition. We present a 12-year-old boy originally suspected of acute epididymo-orchitis, but subsequently an orchiectomy was necessary owing to unpredicted testicular infarction not associated with torsion. Elevation of immunoglobulin M against mycoplasma, reduction in serum factor XIII and the ...

PURPOSE: We examined the pampiniform plexus and prostatic venous plexus using color Doppler ultrasonography and evaluated the relationship between varicocele and the prostatic venous plexus. MATERIALS AND METHODS: This study included 209 men with a mean age of 35.3 years, of whom 68 had no varicoceles, 94 had a unilateral ...

Circulating endothelial cells (CEC) are currently proposed as a potential biomarker for measuring the impact of anti-angiogenic treatments in cancer. However, the lack of consensus on the appropriate method of CEC measurement has led to conflicting data in cancer patients. A validated assay adapted for evaluating the clinical utility of ...

OBJECTIVE: To analyze the effects of sildenafil citrate on clitoral blood flow and sexual response in postmenopausal women with orgasmic dysfunction. METHOD: In this randomized, double-blind, placebo-controlled trial 22 women received a 50-mg dose of sildenafil (n=11) or placebo (n=11) daily for 15 days. The Golombok Rust Inventory of Sexual ...

INTRODUCTION: Aging and the decline of ovarian hormonal secretion during menopause may alter libido, and sexual response and functioning. The effects of hormone replacement therapy (HRT) on the genital vascular hemodynamics have been widely studied. However, there is a lack of knowledge about the effect of HRT on basal clitoral ...

Ultrasonic color flow maps are made by estimating the velocities line by line over the region of interest. For each velocity estimate, multiple repetitions are needed. This sets a limit on the frame rate, which becomes increasingly severe when imaging deeper lying structures or when simultaneously acquiring spectrogram data for ...

An 18-year-old man presented with a growing painless left scrotal mass. Sonography showed a hydrocele and a homogeneous, well-encapsulated left extratesticular mass with similar echogenicity as the normal testis, suggestive of a splenogonadal fusion. To substantiate the diagnosis, the patient underwent Tc-99m heat-denatured red blood cell scintigraphy showing normal physiological ...

PURPOSE: To investigate the long-term effect of varicocele repair on ipsilateral intratesticular arterial resistance index (RI) using color Doppler sonography (CDS). METHODS: A total of 26 infertile patients with left varicocele who underwent a testicular artery and lymphatic-sparing subinguinal varicocelectomy were examined with CDS for intratesticular flow parameters before and ...

The present study sought to expand the limited evidence that sexual orientation is influenced by genetic factors. This was accomplished by seeking statistical differences between heterosexuals and homosexuals for four traits that are known to be genetically determined: eye color, natural hair color, blood type, and the Rhesus factor. Using ...

OBJECTIVE: To investigate the value of the resistive index (RI) of intratesticular arteries, and to establish diagnostic criteria for normal and pathological sperm counts on the basis of quantitative colour Doppler ultrasonography (CDUS), as the assessment of the testicular RI is widely used to measure intratesticular blood flow. PATIENTS AND ...

BACKGROUND: Laparoscopic inguinal hernia repair techniques close the internal ring with a suture. Concern has been raised whether or not the testicular vessels are compromised with this technique. This study was undertaken to evaluate pre- and postoperative testicular perfusion and to compare it with healthy controls. PATIENTS AND METHOD: Sixty-five ...

OBJECTIVE: The purpose of this study was to investigate whether an inguinal hernia would have an impact on the testicular volume and blood flow by scrotal ultrasonography. METHODS: Twenty-six male patients with unilateral inguinal hernias with a mean age of 48.1 years were included in the study. Testicular volumes were ...

BACKGROUND: Color Doppler imaging (CDI) is the most applied method for evaluation of flow in atrial septal defects (ASD). A new real time ultrasound flow imaging modality called blood flow imaging (BFI) is able to visualize the blood flow in any direction of the image and is not limited by ...

OBJECTIVE: The purpose of this study was to evaluate the feasibility of transrectal ultrasonography (TRUS) and color Doppler ultrasonography (CDUS) in differentiating malignant from benign distal ureteral obstructions. METHODS: Our study group consisted of 16 malignant distal ureteral obstructions and 12 benign distal ureteral obstructions. The 16 malignant distal ureteral ...

Cerebral venous reflux is found frequently in transient global amnesia (TGA) patients. The cerebral venous reflux mostly results from left brachiocephalic venous obstruction, and the level of reflux depends on different respiratory status. For further understanding of the role of venous outflow impairment in the pathogenesis of TGA, we used ...

BACKGROUND: Amiodarone-induced thyrotoxicosis (AIT) may be caused by excessive thyroidal hormone synthesis and release (type 1) or by a destructive process (type 2). This differentiation is considered essential for therapeutic choice. PURPOSE: To evaluate the utility of color-flow Doppler sonography (CFDS) in the differential diagnosis and management of AIT. MATERIAL ...

Visualization of volumetric multicomponent data sets is a high-dimensional problem, especially for color data. Medical 3D ultrasound (US) technology has rapidly advanced during the last few decades and scanners can now generate joint 3D scans of tissues (B-mode) and blood flow (power or color Doppler) in real time. Renderings of ...

OBJECTIVES: There has been no report on the hemodynamic evaluation of rectal varices by percutaneous color Doppler ultrasonography. Here, we report the usefulness of color Doppler ultrasonography for this purpose. METHODS: Color Doppler ultrasonography was performed in 44 patients: 31 patients with portal hypertension, 7 with liver cirrhosis (LC) without ...