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ureteric jet

Jörg A Bönhof, Glen McLaughlin
As a continuation of parts 1 1 and 2 2, this article discusses artifacts as caused by insufficient temporal resolution, artifacts in color and spectral Doppler sonography, and information regarding artifacts in sonography with contrast agents. There are artifacts that occur in B-mode sonography as well as in Doppler imaging methods and sonography with contrast agents, such as slice thickness artifacts and bow artifacts, shadows, mirroring, and artifacts due to refraction that appear, for example, as double images, because they are based on the same formation mechanisms...
June 2018: Ultraschall in der Medizin
Jose de Bessa, Cicilia M Rodrigues, Maria Cristina Chammas, Eduardo P Miranda, Cristiano M Gomes, Paulo R Moscardi, Marcia C Bessa, Carlos A Molina, Ricardo B Tiraboschi, Jose M Netto, Francisco T Denes
Introduction: Ureteropelvic junction obstruction (UPJO) is a common congenital anomaly leading to varying degrees of hydronephrosis (HN), ranging from no apparent effect on the renal function to atrophy. Evaluation of these children is based on Diuretic Renal Scintigraphy (DRS) and Ultrasonography (US). Recent studies have suggested that new parameters of conventional and color Doppler ultrasonography (CDUS) may be useful in discriminating which kidneys are obstructed. The present study aims to assess the diagnostic accuracy of such parameters in the diagnosis of obstruction in children with UPJO...
2018: PeerJ
Pranav K Santhalia, Disha Mittal, Arun K Gupta, Manisha Jana
In infants and young children with suspicion of genitourinary tract anomalies, ultrasonography (USG) is usually the first imaging modality. Advantages of USG are well described. In the evaluation of complex congenital urogenital anomalies, ultrasound examination needs to be tailored according to the clinical suspicion and to yield maximum information. Primary megaureter is a congenital anomaly, which is associated with dilatation of ureter above an adynamic segment at the vesicoureteric junction (VUJ). Two different types are described in the literature: refluxing and obstructive...
January 2018: Indian Journal of Radiology & Imaging
Andrea Mancini, Mario Meola, Giuseppe Tarantino, Ilaria Petrucci, Giovanna Berardi, Cristoforo Cuzzola
We describe the case of a 45-year-old woman with a clinical history of breast cancer presenting with anuric renal failure, metabolic acidosis and bilateral grade 2-3 hydronephrosis. Following insertion of bilateral ureteral stents, urinary output was 5000 ml in the subsequent 24 hours with frankly bloody urine, after which anuria recurred. A new ultrasound examination showed hydronephrotic kidneys with properly positioned stents, a distended bladder free of clots and a hypo-anechoic, well-demarcated mass enveloping the aorta...
August 1, 2017: Giornale Italiano di Nefrologia: Organo Ufficiale Della Società Italiana di Nefrologia
Hee Kyung Kim, Sara O'Hara, Bo-Kyung Je, Steven J Kraus, Paul Horn
OBJECTIVE: To evaluate superb microvascular imaging (SMI) for the detection of high-grade vesicoureteral reflux (VUR). METHODS: We reviewed the patients with urinary tract infection who underwent renal US with SMI and VCUG. The subjects were divided into a VUR group, which included 17 patients (20 kidney units, KU) with high-grade reflux (grade 4 or 5) on VCUG, and a group without VUR including the same numbers of subjects. The direction of urine movement at the distal ureter and the renal pelvis was reviewed on SMI...
January 2018: European Radiology
Cara L Grimes, Sonali Patankar, Timothy Ryntz, Nisha Philip, Khara Simpson, Mireille Truong, Constance Young, Arnold Advincula, Obianuju S Madueke-Laveaux, Ryan Walters, Cande V Ananth, Jin Hee Kim
BACKGROUND: Many gynecologic, urologic, and pelvic reconstructive surgeries require accurate intraoperative evaluation of ureteral patency. OBJECTIVE: We performed a randomized controlled trial to compare surgeon satisfaction with 4 methods of evaluating ureteral patency during cystoscopy at the time of benign gynecologic or pelvic reconstructive surgery: oral phenazopyridine, intravenous sodium fluorescein, mannitol bladder distention, and normal saline bladder distention...
November 2017: American Journal of Obstetrics and Gynecology
Arnon Lavi, Sharon Tzemah, Anan Hussein, Ibrahim Bishara, Nikolay Shcherbakov, Genady Zelichenko, Alon Mashiah, Michael Gross, Leonid Cherbinski, Ziv Neeman, Michael Cohen
PURPOSE: Ultrasound is commonly used in urology. Technical advances with reduced size and cost led to diffusion of small ultrasound devices to many clinical settings. Even so, most ultrasound studies are performed by non-urologists. We aimed to evaluate the utility of a pocket-size ultrasound device (Vscan™ GE Healthcare) and the quality of urologist performed study. METHODS: Three consecutive studies were performed: (1) a urologist using the pocket ultrasound, (2) a sonographist using the pocket ultrasound, and (3) a sonographist using a standard ultrasound device...
September 2017: International Urology and Nephrology
Sakir Ongun, Abdurrazak Teken, Orkun Yılmaz, Sakir Süleyman
OBJECTIVE: To contribute to the diagnosis and treatment of ureteral stones by investigating the relationship between the ureteral jet flow measurements of patients with ureteral stones and the size of the stones and the patients' pain scores. MATERIALS AND METHODS: The sample consisted of patients who presented acute renal colic between December 2014 and 2015 and from a noncontrast computed tomography were found to have a urinary stone. The ureteral jet flow velocities were determined using Doppler ultrasonography...
June 2017: Urology
Hyunjung Oh, Seongsoo Kim, Suyeon Kim, Jeosoon Lee, Sookyung Yun, Junghee Yoon, Joohyun Jung, Mincheol Choi
Ureteral jets are the result of a forceful ejection of urine from the vesicoureteral junction into the urinary bladder. By using color Doppler ultrasonography (US), we aimed to identify distinct ureteral jets in dogs, provide insight into ureteral obstruction, and facilitate study of urodynamics and vesicoureteric sphincter function via pulsed Doppler US. Color Doppler US was applied to detect urinary flow from the right ureteral orifices in eight healthy beagles. Under anesthesia, 0.9% saline (2.5 mL/kg/h) and furosemide (0...
September 30, 2017: Journal of Veterinary Science
Luis Espaillat-Rijo, Lauren Siff, Alexandriah N Alas, Sami A Chadi, Stephen Zimberg, Sneha Vaish, G Willy Davila, Matthew Barber, Eric A Hurtado
OBJECTIVE: To compare different modalities to aid in the evaluation of intraoperative ureteral patency on cystoscopy in the postindigo carmine era. METHODS: In a randomized controlled trial, participants undergoing pelvic surgery were randomized into one of four groups: saline distention (control), 10% dextrose distention, oral phenazopyridine, or intravenous sodium fluorescein. Our primary outcome was visibility of the ureteral jets. Secondary outcomes included surgeon satisfaction; adverse reactions including allergies, urinary tract infections, urinary retention, cystoscopy times, and ureteral obstruction; and delayed diagnosis...
December 2016: Obstetrics and Gynecology
D M Narasimhulu, C Prabakar, N Tang, P Homel, P Bral
No abstract text is available yet for this article.
November 2015: Journal of Minimally Invasive Gynecology
K S Arnolds, L Espaillat-Rijo, M L Sprague, S E Zimberg
No abstract text is available yet for this article.
November 2015: Journal of Minimally Invasive Gynecology
Jonathan C Routh
No abstract text is available yet for this article.
December 2016: Journal of Pediatric Urology
S Celik, O Bozkurt, C Altay, F Celebi Celik, G Uz, A Soylu, A Kefi, S Kavukcu, M Secil, O Demir
INTRODUCTION: The risk of kidney stone formation increases with urinary stasis, which is associated with decreased peristaltism. The relationship between nonobstructive kidney stone formation and ureteral jet dynamics, which can be measured with Doppler ultrasonography (US) and provide information about ureteral peristaltism, has been demonstrated in adults. OBJECTIVE: To investigate the relationship between ureteral jet dynamics, which provide information about ureteral peristaltism, and stone formation in children...
December 2016: Journal of Pediatric Urology
Lea Luketic, Ally Murji
Intraoperative cystoscopy has been studied as a means to identify ureteral injuries at the time of gynecologic surgery. The majority of published studies investigating intraoperative cystoscopy have used indigo carmine to dye the urine to allow visualization of ureteral jets; unfortunately, however, this dye is currently not available in North America. The unavailability of indigo carmine may be a permanent reality that forces gynecologists to examine alternatives for the evaluation of ureteral integrity. Various alternative methods have been suggested, ranging from cystoscopy without dye to other commercially available products that dye the urine...
September 2016: Journal of Minimally Invasive Gynecology
Mobolaji O Ajao, Mary K B Cox, Sarah L Cohen, Jon I Einarsson
Cystoscopy can be used to diagnose urologic injuries at the time of gynecologic surgery. Current cystoscopy setup involves removing the indwelling catheter placed for the procedure and assembling a multicomponent cystoscope. The objective of this study was to evaluate and report on our initial experience with CystoSure (Emmy Medical, Holliston, MA), a new Food and Drug Administration-approved device designed to facilitate perioperative diagnostic cystoscopy. The CystoSure catheter is an 18F quad-port silicone transurethral catheter with a central sealed port for the cystoscope and a side port that allows for bladder filling...
September 2016: Journal of Minimally Invasive Gynecology
Mario Meola, Sara Samoni, Ilaria Petrucci, Claudio Ronco
The incidence of acute kidney injury related to urinary tract obstruction is low (1-10%). It occurs in bilateral renal or lower urinary tract obstruction or in ureter obstruction in patients with a single functioning kidney or with pre-existing chronic kidney disease. The etiology and the incidence of obstruction vary on the basis of age and gender. Conventional ultrasound has a high sensitivity (>95%), but low specificity (<70%) in the diagnosis of urinary tract obstruction. Nevertheless, color Doppler is used through the evaluation of renal resistive indexes, ureteral jet and twinkling artifact...
2016: Contributions to Nephrology
Hiroshi Asanuma, Zenichi Matsui, Hiroyuki Satoh, Nobuyoshi Asai, Chizuko Nukui, Yujiro Aoki, Ryuichi Mizuno, Mototsugu Oya
PURPOSE: Vesicoureteral reflux is the most common urinary tract abnormality in children. Although voiding cystourethrography is the gold standard for diagnosing reflux, this approach is invasive. We evaluated color Doppler ultrasound measurement of ureteral jet angle as a noninvasive screening tool for detecting reflux. MATERIALS AND METHODS: We retrospectively evaluated 125 children (250 renal units) who presented with urinary tract infections or hydronephrosis...
June 2016: Journal of Urology
Deepa M Narasimhulu, Cheruba Prabakar, Nancy Tang, Pedram Bral
BACKGROUND: Indigotindisulfonate sodium has been used to color the urine and thereby improve the visualization of ureteric jets during intraoperative cystoscopy. After indigotindisulfonate sodium became unavailable, there has been an ongoing search for an alternate agent to improve visualization of the jets. METHOD: We used 50% dextrose, which is more viscous than urine, as the distension medium during cystoscopy so that the ureteric efflux is seen as a jet of contrasting viscosity...
January 2016: Obstetrics and Gynecology
J Matthew Fields, Jonathan I Fischer, Kenton L Anderson, Alessandro Mangili, Nova L Panebianco, Anthony J Dean
STUDY OBJECTIVE: We sought to identify findings on bedside renal ultrasound that predicted need for hospitalization in patients with suspected nephrolithiasis. METHODS: A convenience sample of patients with suspected nephrolithiasis was prospectively enrolled and underwent bedside ultrasound of the kidneys and bladder to determine the presence and degree of hydronephrosis and ureteral jets. Sonologists were blinded to any other laboratory and imaging data. Patients were followed up at 30 days by phone call and review of medical records...
October 2015: American Journal of Emergency Medicine
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