Ureteric jets: evaluation of normal flow dynamics with color Doppler sonography.

Ij, Cox; Erickson, S J; Foley, W D; Dewire, Douglas M.

doi:10.2214/ajr.158.5.1566665

Cited by 78 publications

(41 citation statements)

References 10 publications

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“…Ultrasound probe positioning can artificially produce asymmetry. There are also normal fluctuations in frequency and intensity of ureteral jets in normal, healthy subjects [22]. Prolonged scanning (40-60 min in toto) is required to document that the asymmetry seen on Doppler is a persistent finding.…”

Section: Discussionmentioning

confidence: 99%

New techniques of ultrasound and color Doppler in the prospective evaluation of acute renal obstruction. Do they replace the intravenous urogram?

et al. 1995

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Section: Discussionmentioning

confidence: 99%

New techniques of ultrasound and color Doppler in the prospective evaluation of acute renal obstruction. Do they replace the intravenous urogram?

et al. 1995

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“…The divergence in SG is achieved by avoiding recent urination, which combined with satisfactory hydration is essential for an optimal visualization of the urine jets into the bladder [3,12] . In a comparative study by Baker and Middleton [13] , it was suggested that better imaging is achieved when the difference in SG is somewhere around 0.008 (range 0.002-0.0016).…”

Section: Discussionmentioning

confidence: 99%

Assessment of Obstruction in Adult Ureterocele by Means of Color Doppler Duplex Sonography

et al. 2005

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Aim: The purpose of this study is to present a method for identifying a ureteral obstruction in unilateral orthotopic ureterocele by means of conventional sonography and color Doppler duplex sonography. We focus on the measurement of the ureterocele dimensions, the degree of dilation it causes to the ipsilateral upper urinary tract, the registration of urine out-flow from the ureteral orifice into the bladder and its spectral analysis. Material and Method: Over 2 years at our institutions, 8 adult patients (7 women, 1 man) were diagnosed as having a single system orthotopic ureterocele. Four of them presented with lumbar pain, dysuria and recurrent urinary tract infections, while the remainder were asymptomatic and diagnosed accidentally. The diagnosis was based on serial sonography of the upper and lower urinary tract confirmed by intravenous pyelography and cystoscopy. We also performed color Doppler duplex sonographic evaluation of the urine jets ejected from both ureteral orifices into the bladder. Using the flow spectral study we analyzed the waveforms and measured their duration and flow rate. The study was completed with a comparative analysis of the data obtained from both ureteral orifices. Results: Cystic dilation of the lower ureteric extremity into the bladder was presented in all cases. Upper urinary tract dilation, of various grades, was present in 4 of 8 patients. Differences in urine jets between those derived from the ureterocele and those from the healthy contralateral ureteral orifice were significant in those patients with dilation of the upper urinary tract. The differences concerned mainly the frequency and symmetry of the jets as well as the pattern, duration and velocity of their waves. The 4 above-mentioned patients, with dilated upper urinary tracts and waveforms differentiated from the contralateral ones, were characterized as obstructive. On the other hand, the remaining 4 patients with subclinical ureterocele showed insignificant differences in urine jets and waveforms, and were found to be non-obstructive. Conclusion: Conventional sonography of the urinary tract in combination with color Doppler duplex sonography of the ureteral jets can be used in an attempt to diagnose and evaluate a unilateral orthotopic (single system) ureterocele and assess the necessity of intervention to identify the obstruction.

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“…Ultrasonographic examination of the ureterovescicular junctions allows identification of the ureterovescicular junctions as small structures protruding into the lumen of the urinary bladder, at its dorsolateral aspect (Douglas 1993). The appearance of ureteral jets origina ting from the ureterovescicular junction has been described in animals and humans (Cox at al 1992, Lamb and Gregory 1994, Lamb and Gregory 1998. Further more, a close correlation between ultrasonographic and surgical findings was found in a study of 14 dogs (Lamb and Gregory 1998).…”

Section: Introductionmentioning

confidence: 87%

Sensitivity, specificity and accuracy of diagnostic imaging methods for the diagnosis of ectopic ureters in the dog

Mantis

Brockman

Whatmough

et al. 2017

J Hellenic Vet Med Soc

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, Jakovljevic S. 2ΠΕΡΙΛΗΨΗ. Σκοπός της αναδρομικής αυτής μελέτης είναι η διερεύνηση της ευαισθησίας, ειδικότητας και ακρίβειας των απει κονιστικών μεθόδων που χρησιμοποιούνται για τη διάγνωση του έκτοπου ουρητήρα στο σκύλο. Μελετήθηκε αρχειακό υλικό του νο σοκομείου ζώων Queen Mother Hospital for animals του Royal Veterinary College της Μεγάλης Βρετανίας από το Νοέμβριο του 1995 μέχρι τον Ιανουάριο του 2006. Μόνο σκύλοι με τουλάχιστον μία ακτινολογική μελέτη με χρήση σκιαγραφικής ουσίας, υπερη-χογραφική εξέταση, εξέταση των ουρητήρων και χειρουργική διά γνωση συμπεριελήφθησαν. Πραγματοποιήθηκε συγκριτική αξιο λόγηση της ενδοφλέβιας ουρογραφίας (ΕΟ), παλλίνδρομης ου ρογραφίας (ΠΟ), υπερηχογραφικής εξέτασης (ΥΠΟ) και χει ρουργικής διάγνωσης. Όλα τα περιστατικά αξιολογήθηκαν ανά ουρητήρα ξεχωριστά, αλλά και με βάση το περιστατικό συνολικά ανεξάρτητα από την απόληξη του κάθε ουρητήρα. Η ΥΠΟ βρέ θηκε να έχει την υψηλότερη ευαισθησία, ειδικότητα και ακρίβεια ανά περιστατικό και με βάση την τελική διάγνωση, ενώ η ΕΟ είχε υψηλότερη ευαισθησία στην ανάλυση ανά ουρητήρα. Το κυριότε ρο μειονέκτημα της ΥΠΟ είναι η μη εντόπιση της σωστής θέσης του έκτοπου ουρητήρα. Όταν η ανάλυση πραγματοποιήθηκε με βά ση την τελική διάγνωση του περιστατικού και ανεξάρτητα από την απόληξη του κάθε ουρητήρα, η ΥΠΟ είχε τέλεια ευαισθησία, ει δικότητα και ακρίβεια. Η χαμηλότερη ειδικότητα και ακρίβεια των μεθόδων ΕΟ και ΠΟ φαίνεται να σχετίζεται με τη δυσκολία ανα γνώρισης της θέσης απόληξης των ουρητήρων.

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Ureteric jets: evaluation of normal flow dynamics with color Doppler sonography.

Cited by 78 publications

References 10 publications

New techniques of ultrasound and color Doppler in the prospective evaluation of acute renal obstruction. Do they replace the intravenous urogram?

New techniques of ultrasound and color Doppler in the prospective evaluation of acute renal obstruction. Do they replace the intravenous urogram?

Assessment of Obstruction in Adult Ureterocele by Means of Color Doppler Duplex Sonography

Sensitivity, specificity and accuracy of diagnostic imaging methods for the diagnosis of ectopic ureters in the dog

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