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  • 1
    Electronic Resource
    Electronic Resource
    Portal venous blood flow in cystic fibrosis: assessment by Duplex Doppler sonography (1989)
    Springer
    Pediatric radiology 19 (1989), S. 371-374 
    Details
    ISSN: 1432-1998
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Changes of portal venous hemodynamics were investigated in 32 patients with cystic fibrosis (CF) with a mean age of 11.6 years. Hepatic profile of these patients included total bilirubin and albumin together with determination of size and echogenicity of the liver and spleen, determination of the diameter of the portal vein by real-time sonography and quantitation of flow volume of the portal vein using Duplex Doppler sonography. As a control, 35 age matched healthy children were also examined. Diameter of the portal vein was significantly increased in CF patients versus controls. Comparison of the mean flow volume of the portal vein showed a significant increase in CF-patients over 12 y old versus controls. In patients less than 12 y no significant difference of flow volume of the portal vein between CF-patients and controls was noted. The increase of diameter and flow volume of the portal vein suggest an adaptive mechanism in the pressure-volume relationship of the portal venous system in patients with CF.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02387630
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  • 2
    Electronic Resource
    Electronic Resource
    Renal transplant hemodynamics in children: Prospective analysis of colour coded versus pulsed Doppler sonography (1992)
    Springer
    Pediatric radiology 22 (1992), S. 163-168 
    Details
    ISSN: 1432-1998
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract In 30 children with renal allografts the diagnostic validity of pulsed Doppler (PD) versus colour coded Doppler (CD) sonography was assessed prospectively. 46 PD examinations were performed calculating the resistive index (RI) in the segmental arteries in comparison to 46 CD scans, where renal blood flow throughout the grey-scale image was displayed. In addition, point-spectral analysis with calculation of the RI was also performed on the CD scans. The time for examination ranged from five to ten minutes for the PD and from three to five minutes for the CD study. Concordant findings for the PD and CD technique were generally obtained (normal blood flow pattern on PD — excellent visualization of renal blood flow on CD, reduced or reversed diastolic flow on PD — poor visualization of renal blood flow on CD). There was close correlation of the RI values obtained by the PD and CD scans. CD sonography facilitated point-spectral analysis in shortening the time for examination. The ability to visualize focal hemodynamic alterations provided a higher diagnostic accuracy in comparison to PD sonography.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02012486
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    The echobright kidney in primary polycythaemia (1989)
    Springer
    Pediatric radiology 19 (1989), S. 440-440 
    Details
    ISSN: 1432-1998
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02387648
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Cerebral blood flow in newborn infants with and without mechanical ventilation (1989)
    Springer
    Pediatric radiology 19 (1989), S. 509-512 
    Details
    ISSN: 1432-1998
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The influence of mechanical ventilation with low mena airway pressure (MAP) on cerebral blood flow (CBF) veolocity in newborn infants was assessed in fifteen ventilated infants by Duplex Doppler Sonography (Duplex DS). As a control, CBF velocities were examined in 15 age and weight matched non-ventilated infants. For quantitation, maximal systolic velocity, enddiastolic velocity and the semiquantitative Pourcelot index were determined as representative flow variables. There was no significant difference of these flow variables between ventilated and non-ventilated infants. The pH, pO2 and pCO2 did not differ significantly between the two groups and there was no correlation between the flow variables, pH, pO2, pCO2 or MAP. Mechanical ventilation with low MAP is not associated with adverse effects on cerebral hemodynamics in newborn infants when significant alterations of the blood gases are avoided.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02389558
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  • 5
    Electronic Resource
    Electronic Resource
    Color-coded Doppler evaluation of cholecystic varices in portal hypertension (1990)
    Springer
    Pediatric radiology 21 (1990), S. 71-72 
    Details
    ISSN: 1432-1998
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A 11-year-old white girl presented with a diagnosis of thrombosis of the portal vein after newborn septicemia. Duplex sonography revealed significant narrowing of the portal vein and its right and left branches. A Doppler signal could only be obtained in certain short segments of the portal vein and indicated hepatopetal flow. Color-coded Doppler sonography showed extensive varicose veins in the gallbladder with a bigger draining vessel running to the porta hepatis. Documentation of varices like those in the gallbladder wall confirms the diagnosis of portal hypertension and may increase the sensitivity of Doppler sonography. Color mapping has the potential to detect unexpected flow and to analyze blood flow to better advantage.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02010822
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  • 6
    Electronic Resource
    Electronic Resource
    Acute renal transplant rejection in children: assessment by Duplex Doppler sonography (1988)
    Springer
    Pediatric radiology 18 (1988), S. 474-478 
    Details
    ISSN: 1432-1998
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Over a two year period 74 consecutive Duplex Doppler scans were performed in 23 children with renal allografts and were compared to the Doppler sonographic findings in orthotopic kidneys of 25 age matched healthy controls. The Doppler waveforms of renal arterial flow were analysed qualitatively assessing systolic and diastolic flow amplitudes, for quantitation the Pourcelot index (PI) was used. There was no variation between the Doppler waveforms in recipients with normal allograft function and healthy controls. In 12 patients with biopsy proven acute rejection a decrease or absence of the diastolic flow amplitude was noted, resulting in increased pulsatility of the Doppler wave-form. The mean PI in acute rejection differed significantly from the mean PI in normal allograft function. Duplex Doppler sonography is a useful imaging modality in the differentiation between acute rejection and normal allograft function and should therefore be integrated in the screening of children after renal transplantation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00974083
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  • 7
    Electronic Resource
    Electronic Resource
    Diagnosis of X-recessive Kallmann syndrome in early infancy (1994)
    Springer
    European journal of pediatrics 153 (1994), S. 245-247 
    Details
    ISSN: 1432-1076
    Keywords: Kallmann syndrome X-recessive inheritance ; Hypoplastic olfactory sulci ; Rhinencephalon MR-imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A 3-month-old infant presented with hypogonadism, a small penis and bilateral cryptorchidism. He showed an insufficient response of luteotropic hormone (LH) and follicle stimulating hormone (FSH) to luteotropic hormone releasing hormone (LHRH) and of testosterone to human chorionic gonadotrophin. The maternal uncle had hypogonadism and anosmia and also showed an impaired LH and FSH response to LHRH. MRI examination showed hypoplasia of the rhinencephalon in both cases. These findings in the son and brother of the clinically unaffected mother suggest X-linked recessive inheritance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01954511
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  • 8
    Electronic Resource
    Electronic Resource
    Diagnosis of X-recessive Kallmann syndrome in early infancy (1994)
    Springer
    European journal of pediatrics 153 (1994), S. 245-247 
    Details
    ISSN: 1432-1076
    Keywords: Key words: Kallmann syndrome – X-recessive inheritance – Hypoplastic olfactory sulci – Rhinencephalon – MR-imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. A 3-month-old infant presented with hypogonadism, a small penis and bilateral cryptorchidism. He showed an insufficient response of luteotropic hormone (LH) and follicle stimulating hormone (FSH) to luteotropic hormone releasing hormone (LHRH) and of testosterone to human chorionic gonadotrophin. The maternal uncle had hypogonadism and anosmia and also showed an impaired LH and FSH response to LHRH. MRI examination showed hypoplasia of the rhinencephalon in both cases. These findings in the son and brother of the clinically unaffected mother suggest X-linked recessive inheritance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01954511
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    Paper (German National Licenses)
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  • 9
    Electronic Resource
    Electronic Resource
    Stroke-like encephalopathy in an infant with 3-hydroxy-3-methylglutaryl-coenzyme A lyase deficiency (1998)
    Springer
    European journal of pediatrics 157 (1998), S. 743-746 
    Details
    ISSN: 1432-1076
    Keywords: Key words 3-hydroxy-3-methyl-glutaryl-coenzyme A (HMG-CoA) lyase deficiency ; Organic aciduria ; Stroke-like encephalopathy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A 2.5-year-old boy presented with acute metabolic decompensation in whom 3-hydroxy-3-methyl-glutaryl-coenzyme A (HMG-CoA) lyase deficiency was diagnosed. Four days after metabolic decompensation, a stroke-like encephalopathy with tonic clonic convulsion of the left arm and leg and coma developed. Brain oedema and subsequent demarcation and atrophy were observed mainly within the supply areas of the right anterior and middle cerebral artery and to a lesser extent in various sites within the right hemisphere. Residual neurological deficits included spastic paresis of the left arm and leg, and left supranuclear facial palsy and aphasia, indicating bilateral diffuse brain affection. Conclusion In the presented patient with HMG-CoA lyase deficiency, stroke-like encephalopathy occurred days after metabolic decompensation indicating ongoing (intracerebral) metabolic derangement. Monitoring of the intracerebral accumulation of toxic metabolites by magnetic resonance spectroscopy and of cerebral haemodynamics might be useful for a better understanding of the pathogenetic mechanisms of stroke-like encephalopathy and to identify patients at risk.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004310050927
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  • 10
    Electronic Resource
    Electronic Resource
    Kinking and stenosis of the carotid artery associated with homolateral ischaemic brain infarction in a patient treated with cyclosporin A (1998)
    Springer
    European journal of pediatrics 157 (1998), S. 599-601 
    Details
    ISSN: 1432-1076
    Keywords: Key words Kinking ; Ischaemic brain infarction ; Cyclosporin A
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We present a 3-year-old patient with stenotic kinking of the left internal carotid artery (ICA) who developed an ischaemic infarction of the left brain hemisphere followed by severe neurological sequelae after a prolonged generalized seizure. At time of the seizure the boy was in biological remission of a nephrotic syndrome and received prednisolone and cyclosporin A (CsA) treatment. The haemodynamic consequences of inborn kinking of the ICA is discussed controversely in the literature. The presented case shows that stenotic kinking of the ICA may significantly impair the blood flow towards the homolateral hemisphere and therefore may result in an ischaemic infarction. The influence of CsA on seizure activity is discussed. Conclusion This case provides clinical and radiological evidence supporting an association between stenotic kinking of the carotid artery and homolateral hemispheric brain infarction.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004310050887
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