Volume CXVIII, Number 8, November 10, 2000

Objective: The aim of this study is to investigate the degree of variation of hydronephrosis by hydration in patients with ureteropelvic junction obstruction (UPJO). Material and Methods: Patients with antenatally diagnosed UPJO who admitted in a three months period were evaluated in terms of variation in sonographic findings for hydronephrosis. Serial renal ultrasounds were carried out before and after hydration considering parameters for hydronephrosis. Parameters evaluated on each ultrasound included degree of hydronephrosis, maximum anteroposterior diameter of the renal pelvis (mAPD) and anteroposterior pelvic diameter at hilum (hAPD), renal parenchymal thickness, dimensions of both kidneys, grade of hydronephrosis and the volume of the bladder. Results: Eleven children with unilateral hydronephrosis due to UPJO were evaluated. There were 10 males and 1 female at a mean age of 10.3 (3-30) months. The mean value of mAPD before hydration was 19.3±4.3 and increased to 21.3±4.6 mm (9.6% increase) after hydration showing a statistically significant difference (p=0.006). The corresponding measurements for hAPD before and after hydration were 14.5±3.6 mm and 14.6±3.4 mm respectively (p=0.846). Parenchymal thickness before and after hydration were 7.2±0.53 and 6.9±0.44 respectively which also showed no statistical significance (p=0.335). Hydration was found to have no significant effect on the parameters examined of contralateral kidney. Conclusion: The commonly used ultrasonographic parameters in the follow-up examination of hydronephrotic kidneys are prone to hydration effects. Among these parameters hAPD seems to be less affected. Copyright © 2013 by Türkiye Klinikleri

Image-directed and color Doppler ultrasonography in the diagnosis of postbiopsy arteriovenous fistulas of native kidneys

PubMed ID: 7797661Using image-directed and color Doppler ultrasonography (ICDUS), we examined 65 patients with single kidney biopsy and diagnosed one arteriovenous fistula (AVF) in each of 8 kidneys. Three of them were associated with pseudoaneurysms. Three of the patients with AVF who presented with macrohematuria underwent angiography. Therapeutic percutaneous embolization was performed in 2 of them. The remaining 6 patients were followed up with ICDUS. All the lesions had disappeared at the end of a 6-month period. We conclude that ICDUS is an easy and noninvasive imaging technique in the diagnosis of postbiopsy native renal AVFs. © 1995 John Wiley & Sons, Inc. Copyright © 1995 Wiley Periodicals, Inc., A Wiley Compan

A search for excited leptons in pp collisions at √s=7 TeV

This is the Pre-Print version of the Article - Copyrigth @ 2011 ElsevierA search for excited leptons is carried out with the CMS detector at the LHC, using 36 inverse picobarns of pp collision data recorded at sqrt(s) = 7 TeV. The search is performed for associated production of a lepton and an oppositely charged excited lepton pp to l l*, followed by the decay l* to l gamma, resulting in the l l gamma final state, where l = electron or muon. No excess of events above the standard model expectation is observed. Interpreting the findings in the context of l* production through four-fermion contact interactions and subsequent decay via electroweak processes, first upper limits are reported for l* production at this collision energy. The exclusion region in the compositeness scale Lambda and excited lepton mass M(l*) parameter space is extended beyond previously established limits. For Lambda = M(l*), excited lepton masses are excluded below 1070 GeV/c^2 for e* and 1090 GeV/c^2 for mu* at the 95% confidence level.This work is supported by the FMSR (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS, MoST, and NSFC (China); COLCIENCIAS (Colombia); MSES (Croatia); RPF (Cyprus); Academy of Sciences and NICPB (Estonia); Academy of Finland, ME, and HIP (Finland); CEA and CNRS/IN2P3 (France); BMBF, DFG, and HGF (Germany); GSRT (Greece); OTKA and NKTH (Hungary); CSIR, DAE, and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); NRF (Korea); LAS (Lithuania); CINVESTAV, CONACYT, SEP, and UASLP-FAI (Mexico); PAEC (Pakistan); SCSR (Poland); FCT (Portugal); JINR (Armenia, Belarus, Georgia, Ukraine, Uzbekistan); MST and MAE (Russia); MSTDS (Serbia); MICINN and CPAN(Spain); Swiss Funding Agencies (Switzerland); NSC (Taipei); TUBITAK and TAEK (Turkey); STFC (United Kingdom); DOE and NSF (USA)