Ultrasonic in vivo and in vitro studies on the nature of the ureteral jet phenomenon.

Kremer, H; W, Dobrinski; Mikyska, M; Baumgärtner, Martin; Zöllner, N.

doi:10.1148/radiology.142.1.7053530

Cited by 34 publications

(27 citation statements)

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“…It is important not to allow the patient to completely empty their bladder prior to the study. Differences in specific gravity of urine exiting the ureter with reference to urine in the bladder appears to be necessary in order to visualize ureteral jets [12,13]. A completely empty bladder will diminish these specific gravity differences and may obscure ureteral jets.…”

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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“…[23][24][25][26][27] These studies examined the jet flow characteristics, focusing on the evaluation of specific pathologies (e.g., reflux, ureteral calculi). In all of these studies, it was necessary to wait for spontaneous jet flow formation to interpret the results.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of ureteric jet flow with Doppler ultrasonography during manual compression

Yıldırım¹,

Bozkurt²,

Çırakoğlu³

2011

Turkish Journal of Urology

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Objective: This study aimed to distinguish between obstructive and non-obstructive dilation of the upper urinary tract using ureterovesical jet flow analysis with Doppler ultrasonography (US) and manual flank compression. Materials and methods:The study enrolled 54 patients (11 women, 43 men; mean age 27.5 years) with unilateral hydronephrosis. All but 2 pregnant patients underwent the Doppler US and the reference standard test [intravenous pyelogram (IVP)] after standardized hydration. The distended urinary bladder was visualized in the transverse plane to evaluate both ureteral orifices simultaneously. During and after compression of each flank, the jet flows were recorded in Doppler mode. The jet flows were quantified by calculating the longitudinal extent of the color spread into the bladder on both sides. The sensitivity, specificity, positive predictive value, negative predictive value, and accuracy of the test for determining the degree of obstruction were evaluated statistically. Results:Ureterovesical jet flow could not be visualized with flank compression in 4 cases. Three of these cases had complete obstruction on IVP. In the 22 cases that had markedly reduced flow compared to the contralateral side on Doppler US, the IVP showed similar stasis. In the 19 cases that had mildly diminished flow compared to the contralateral side on Doppler US, no significant difference was detected in the pyelogram and nephrogram phases on IVP.Conclusion: Doppler examination of the ureterovesical jet flows during flank compression may be a good diagnostic method for evaluating the degree of obstruction, especially in patients in whom magnetic resonance imaging or computerized tomography is contraindicated. Gereç ve yöntem:Çalışmaya tek taraflı hidronefroz tespit edilmiş 54 olgu (11 kadın, 43 erkek; ortalama yaş 27.5 yıl) dahil edildi. Hidrasyon düzeyi standardize edilerek, tüm hastalara Doppler US inceleme ve 2 gebe olgu dışındaki diğer tüm hastalara referans standart test olarak intravenöz piyelografi (İVP) yapıldı. Her iki üreter orifisi görülecek şekilde distandü mesane yatay pozisyonda görüntülendi. Renal lojun kompresyonu sırasında ve sonrasında oluşan jet akımlar Doppler mod ile kaydedildi. Mesane içerisine doğru gelişen renk saçılımının uzunluğu dikkate alınarak jet akımlar kantifiye edildi. Obstrüksiyon derecesinin ayırımında sensisitivite, spesifite, pozitif ve negatif prediktif değerler istatistiksel olarak hesaplandı. Bulgular: Üreterovezikal bileşke akımı toplam 4 olguda hiç gözlenemedi. Bunlardan biri hariç diğer üçün-de İVP ile de tam obstrüksiyon rapor edilmişti. Kalan olguların 22'sinde, Doppler US'de karşı tarafa göre kısalmış jetler sözkonusu iken, İVP'de de bununla uyumlu nonprogresif staz görüldü. Diğer 19 olguda, Doppler US'de karşı tarafa göre hafif azalmış jetler sözkonusu iken İVP incelemelerinde piyelogram ve nefrogram fazlarında anlamlı fark tespit edilmemişti. Sonuç:Özellikle manyetik rezonans görüntüleme veya bilgisayarlı tomografinin kontrendike olduğu olgularda, renal lojların manu...

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“…[10][11][12] For transabdominal sonography, orally hydrating the patient before the examination serves to facilitate evaluation of the bladder and to enhance the density difference between the diluted fresh ureteral jets and the concentrated urine already present in the bladder. Thus, patients undergoing transabdominal sonographic examination should not void before hydration; if they do, then the fresh urine in the bladder has the same density as the urine entering the bladder, thus obscuring detection of the jets.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of ureterocele with Doppler sonography

Madeb

Shapiro

Rothschild

et al. 2000

J. Clin. Ultrasound

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Ultrasonic in vivo and in vitro studies on the nature of the ureteral jet phenomenon.

Cited by 34 publications

References 0 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?

Evaluation of ureteric jet flow with Doppler ultrasonography during manual compression

Evaluation of ureterocele with Doppler sonography

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