Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    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
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    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
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    ISSN: 1432-0584
    Keywords: Hepatosplenic abscesses ; AML ; Diagnosis ; Sonography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In order to determine the frequency of hepatosplenic abscesses in AML patients during chemotherapy and to evaluate the clinical and laboratory characteristics of this complication we performed a prospective study over a 28-month period. Fifty-five consecutive patients with de novo AML or relapse who received intensive chemotherapy underwent regular ultrasound examinations. In 16 patients (29.1%) hepatic and/or splenic abscesses were detected sonographically. Histopathological evidence for abscess formation was obtained in five of these 16 patients. In three patients granulation tissue and in one patient necrotizing granulomas were found. Causative micro-organisms were proven in only three patients:Candida hyphae were demonstrated in one patient, gram-positive cocci in another. Bacteria and fungi were seen in the tissue specimen of the third patient. Patients with hepatosplenic abscesses had significantly prolonged fever after neutrophil recovery but did not differ from patients without abscesses in any other laboratory or clinical features. Due to the absence of specific alerting clinical and laboratory signs and symptoms of hepatosplenic abscesses, routine ultrasound examination is required for detection of this complication. The presence of hepatic and/or splenic abscesses does not necessarily worsen the prognosis, but it may influence the decision on further chemotherapy and antimicrobial treatment.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    Electronic Resource
    Electronic Resource
    Springer
    European radiology 9 (1999), S. 115-121 
    ISSN: 1432-1084
    Keywords: Key words: Ultrasound ; Color Doppler ; Amplitude-coded color Doppler sonography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. Amplitude-coded color Doppler sonography (ACD) has become an useful adjunct to gray-scale US and conventional color Doppler sonography (CD) for the assessment of vascular diseases and pathologic conditions that might affect or alter tissue vascularization or perfusion. Basically, all US units that generate conventional color Doppler information through autocorrelation technique are capable of displaying ACD. This technique is also referred to as power Doppler, amplitude-mode color Doppler US, color Doppler energy (CDE), or US angiography. Amplitude-coded color Doppler sonography has already emerged as a valuable adjunct to conventional CD, particularly for evaluating flow in parts of the body where CD signal is weak because of slow flow, small blood vessels, or both.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Der Radiologe 38 (1998), S. 15-22 
    ISSN: 1432-2102
    Keywords: Key words Crohn's disease • Ultrasound • Small bowel enema • Computed tomography ; Schlüsselwörter Morbus Crohn • Ultraschall • Enteroklysma • Irrigoskopie • Computertomographie
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Die vorliegende Übersichtsarbeit soll die Rolle bildgebender radiologischer Modalitäten bei der interdisziplinären Betreuung von Patienten mit Morbus Crohn (MC) diskutieren. Es wird ein Konzept vorgestellt, welches die unterschiedlichen Anforderungen an die bildgebende Diagnostik im Rahmen der Erstdiagnose, der Verlaufskontrolle sowie bei der Erfassung von Komplikationen eines MC definiert. Davon ausgehend wird versucht, für die einzelnen Fragestellungen die jeweils effektivste radiologische Abklärung vorzuschlagen. Mehrere Tabellen ermöglichen einen raschen und komprimierten Überblick der diagnostischen Problemstellungen im Rahmen einer schrittweisen Abklärung der Erkrankung. Im Rahmen der Erstdiagnostik soll die radiologische Dünndarmdarstellung bei der Differentialdiagnose (MC vs. Colitis ulcerosa) hilfreich sein und das genaue Ausmaß des Dünndarmbefalles eruieren. Im Rahmen der klinischen Verlaufskontrolle ist die Darmsonographie ideal zur Überwachung der Erkrankung sowie zur frühen Erfassung von Komplikationen geeignet. Bei geringstem Verdacht auf eine Komplikation sollte sofort eine CT durchgeführt werden.
    Notes: Purpose: This paper discusses the role of different imaging modalities in the diagnostic work-up of Crohn's disease (CD). Methods: We present a concept, which emphasizes different diagnostic aspects with regard to primary diagnosis, follow-up and assessment of complications of CD. The most effective imaging approach to various diagnostic problems of CD is discussed in detail. Discussion: With regard to the primary diagnosis barium studies should contribute to differentiate between CD and ulcerative colitis. Beyond that, these studies should evaluate location and extent of disease. During the follow-up bowel sonography provides staging of disease and enables the detection of complications at an early stage. CT is a valuable tool in the preoperative assessment of complications, such as fistulae and abscesses.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Der Radiologe 37 (1997), S. 388-401 
    ISSN: 1432-2102
    Keywords: Key words Pulmonary hypertension • Cor pulmonale ; Schlüsselwörter Pulmonale Hypertension • Cor pulmonale
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Die pulmonale Hypertension stellt ein schweres Krankheitsbild von verschiedener Ätiologie und Ausprägung dar. Sie führt zu einer Druck- und/oder Volumsbelastung des rechten Ventrikels mit Hypertrophie und Dilatation und schlußendlich zum Rechtsherzversagen. Liegt die Ursache der pulmonalen Hypertension in der Lungenstrombahn selbst (z. B. bei chronischen Pulmonalembolien), so kann der stark erhöhte Lungengefäßwiderstand zu einem extremen pulmonalen Hochdruck führen. Andererseits kommt es auch bei obstruktiven und restriktiven Lungenerkrankungen zur Ausbildung einer mäßigen pulmonalen Hypertension. Heute stehen neben dem etablierten Verfahren der Echokardiographie auch dem Radiologen moderne bildgebende Verfahren zur Beurteilung von Morphologie und Funktion des rechten Herzens sowie der Pulmonalarterien zur Verfügung. Die Anwendung von Spiral-CT, Elektronenstrahl-CT (EBT) und MRT erlauben einerseits die Diagnose und Differentialdiagnose der pulmonalen Hypertension und die Erfassung und Verlaufsbeurteilung zugrundeliegender vaskulärer und parenchymaler Lungenerkrankungen. Andererseits kann auch das Ausmaß der sekundären Belastung des rechten Herzens quantifiziert und Parameter der pulmonalen Hämodynamik errechnet werden.
    Notes: Summary Pulmonary hypertension is a severe disorder of the pulmonary circulation and occurs in a variety of vascular and parenchymal lung diseases. It leads to volume and/or pressure overload of the right ventricle and finally to right heart failure. Pulmonary vascular diseases such as chronic pulmonary embolism cause a drastic increase in pulmonary vascular resistance, which results in extremely high pulmonary artery pressures that can even reach systemic levels. On the other hand, moderate pulmonary hypertension can also occur in chronic obstructive and restrictive lung diseases. For a long time, the diagnosis of pulmonary hypertension and cor pulmonale was based upon findings in echocardiography and right heart catheterization. Today modern imaging techniques allow the radiologist to assess right ventricular and pulmonary artery morphology and function. The application of spiral CT, electron-beam CT and MRT permits the diagnosis and differential diagnosis of pulmonary hypertension and also the evaluation and follow-up of underlying vascular or parenchymal lung disorders. In addition, quantification of right ventricular function and calculation of pulmonary hemodynamic parameters are possible.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Skeletal radiology 17 (1988), S. 171-175 
    ISSN: 1432-2161
    Keywords: Bone neoplasms ; Leukemia ; Magnetic resonance-studies ; Hairy cell leukemia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The clinical and radiographic aspects of two patients with destructive bone lesions, complicating the course of hairy cell leukemia are presented. The findings are compared with those of 27 previously published cases. The most prominent features of this rare skeletal disorder are osteolysis and widespread or localized demineralisation with predilection for the femoral head and neck. Localized persisting pain is the leading clinical symptom in all cases. Magnetic resonance imaging is helpful in evaluating the extent of bone marrow infiltration and demonstrates focal areas of decreased signal intensity in sites of radiographically detectable bone destruction as well as in bones that appear normal on plain films.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 8
    ISSN: 1432-2102
    Keywords: Schlüsselwörter CT ; Lunge ; CT ; Densitometrie ; Pulmonale Verkalkungen ; Pulmonale Neoplasien ; Key words CT ; lung ; CT ; densitometry ; Pulmonary calcifications ; Pulmonary neoplasms
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Pulmonary calcifications are a frequent finding in CT examinations of the chest. In many cases, characteristic CT morphology and distribution of pulmonary and mediastinal calcifications may lead to a straightforward specific diagnosis of the underlying disease. In that respect, calcifications are often the residual finding of previous infections. Less often, they may be due to neoplasms, metabolic disorders, occupational exposure or previous therapy. This review focuses on the etiology, pathogenesis and morphological CT features of pulmonary calcifications. A knowledge of the technical aspects of CT imaging is required to verify calcifications and avoid pitfalls.
    Notes: Zusammenfassung Pulmonale Verkalkungen sind ein häufiger Befund in der CT der Lunge. Verkalkungen sind oft Residuen abgeheilter Prozesse und zeichnen sich durch charakteristische Morphologie und Verteilung aus. Der Nachweis von Verkalkungen in pulmonalen Rundherden hat einen hohen Stellenwert in der Differenzierung benigner und maligner Läsionen. Dieser Überblick behandelt exemplarisch Pathogenese, Ätiologie und CT-Diagnostik pulmonaler Verkalkungen. Kenntnisse der technisch-physikalischen Grundlagen der CT-Diagnostik sind wichtig, um Kalk treffsicher nachzuweisen und Täuschungsmöglichkeiten zu vermeiden.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Der Radiologe 37 (1997), S. 197-204 
    ISSN: 1432-2102
    Keywords: Schlüsselwörter Lebertransplantation ; Komplikation ; Radiologische Diagnostik ; Key words Liver transplantation ; Complications ; Radiological diagnosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Introduction: Orthotopic liver transplantation (OLT) has become an accepted treatment for end-stage liver disease. However, postoperative complications result in significant patient morbidity and mortality. Early detection and treatment of these complications is therefore of utmost importance. Materials and methods: We retrospectively reviewed the postoperative complications of the patients who underwent OLT at our institution. Duplex Doppler sonography and cholangiography were the primary imaging modalities in postoperative evaluation of the transplanted liver. Other important techniques were CT, MRI, and angiography, which may contribute to a reliable diagnosis of vascular or biliary complications. Results: Second to primary organ dysfunction, vascular complications are the most frequent cause of graft loss. Thrombosis of the hepatic artery is the most common and most serious vascular complication, with a reported incidence from 4 to 42 %. Bile duct sludge, leaks and strictures are frequent complications after liver transplantation, which can contribute to graft dysfunction. Biliary tract complications usually occur within the first 3 months and require interventional radiological or surgical therapy. Since liver transplant recipients undergo immunosuppressive therapy, they are at increased risk of developing late post-transplant malignancies, which are best depicted by US, CT or MRI. However, radiological diagnosis of lymphoproliferative disorder has to be confirmed by liver biopsy. Conclusion: Cholangiography and Duplex sonography are routinely used in the postoperative evaluation of patients with OLT. CT, MRI, and angiography are problem-solving tools in equivocal cases.
    Notes: Zusammenfassung Einleitung: Die orthotope Lebertransplantation hat sich zu einer etablierten Therapie bei Lebererkrankungen im Endstadium entwickelt. Der frühe Nachweis und die prompte Therapie eventueller Komplikationen sind für das Überleben des Patienten und des Organs entscheidend. Material und Methode: Es wurden im eigenen Krankengut die postoperativen Komplikationen nach OLT retrospektiv ausgewertet. Die Duplexsonographie und die Cholangiographie erwiesen sich als die primären Untersuchungsmethoden der Wahl zum Nachweis vaskulärer oder biliärer Komplikationen. CT, MRI und die Angiographie waren in Problemfällen wertvolle additive bildgebende Verfahren zur Diagnosesicherung. Ergebnisse: Nach der primären Organdysfunktion sind die vaskulären Komplikationen als häufigste Ursache für den Verlust des Spendeorgans anzuführen. Die Thrombose der A. hepatica ist die häufigste vaskuläre Komplikationen mit einer Inzidenz von 4–42 %. Galleleaks, -sludge und -strikturen sind häufige Komplikationen, die letztlich zu einer Dysfunktion des transplantierten Organs führen können. Biliäre Komplikationen treten gehäuft in den ersten 3 Monaten auf und erfordern eine interventionelle oder chirurgische Therapie. Da Patienten nach OLT einer immunsuppressiven Therapie unterliegen, sind sie einem erhöhten Risiko einen lymphoproliferativen Tumor zu entwickeln ausgesetzt. Diese Posttransplant-Tumore können mit US, CT und MRI ausgezeichnet abgegrenzt werden, erfordern jedoch eine Sicherung der Diagnose durch eine Feinnadelpunktion. Schlußfolgerung: Die postoperative Verlaufskontrolle und der Nachweis von Komplikationen nach OLT ist eine Domäne von Cholangiographie und Duplexsonographie. In Problemfällen kommen CT, MRI und Angiographie zum Einsatz.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 10
    ISSN: 1432-2102
    Keywords: Key words Stereotactic breast biopsy • Patient tolerance ; Schlüsselwörter Brustbiopsie • Patiententoleranz
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung An Hand einer prospektiv randomisierten Studie sollen in diesem Beitrag die sitzende und die liegende Brustbiopsie verglichen werden. Die Ergebnisse dieser Studie wurden teilweise bereits publiziert [11]. Insgesamt wurden 103 Patientinnen stereotaktisch gezielt biopsiert. In 51 Fällen wurde die Biopsie in liegender Position (TRC-Mammotest, Schweden), in 52 Fällen in sitzender Position (Stereotix 2; Genereal Electric Medical Systems, Milwaukee, Wisconsin, USA) durchgeführt. Mit Hilfe von prä- und postbioptischen Fragebögen wurden die allgemeine Unruhe/Angst, Schmerz sowie subjektive Erfahrungen aller Patientinnen bestimmt. Zusätzlich wurden etwaige vasovagale Reaktionen nach ihrem Ausmaß (0–2) bewertet. Sämtliche Biopsieergebnisse wurden operativ verifiziert und die Spezifität und Sensitivität beider Biopsiepositionen ermittelt und verglichen. Es konnte kein statisch signifikanter Unterschied zwischen beiden Biopsiepositionen bezüglich der allgemeinen Toleranz festgestellt werden. Signifikant mehr Patientinnen (p = 0,04) der liegenden Position würden vor einer neuerlichen Biopsie Medikation zur Beruhigung wünschen. Insgesamt 3 Patientinnen (liegend: n = 1; sitzend: n = 2) fielen während der Biopsie in Ohnmacht. Kein statistisch signifikanter Unterschied fand sich bezüglich Sensitivität (95 %) und Spezifität (100 %) zwischen beiden Biopsiepositionen. Besonderes Augenmerk sollte auf eine „intensive“ Patientenaufklärung und Betreuung vor der Biopsie gerichtet werden. Beide Biopsiepositionen werden von den Patienten gleich gut toleriert. Allgemeine vasovagale Reaktionen stellen kein großes Problem der Brustbiopsie dar. Der Erfolg bzw das Ergebnis der Biopsie ist unabhängig von der Biopsieposition.
    Notes: Summary Objective/Material and Methods: In a prospective randomized study, the techniques of stereotactic breast biopsies in prone and sitting position were compared. Part of the data has already been published [11]. A total of 103 women underwent stereotactic breast biopsies, either prone (n = 51; using TRC-Mammotest, Sweden) or in the sitting position (n = 52; using Stereotix 2, General Electric Medical Systems, Milwaukee, Wisconsin, USA). With the help of pre- and post-biopsy questionnaires, anxiety, pain, and subjective experience were recorded in all patients. Vasovagal reactions were scored from 0 to 2 according to their severity. All biopsy results were verified by surgery. The specificities and sensitivities for the two positions were calculated and statistically compared. Results: With regard to overall tolerance no statistically significant difference between biopsies performed in the sitting or the prone position was noted. Significantly more patients (p = 0.04) in the prone position stated they would prefer premedication prior to a repeat biopsy. Three patients (prone; n = 1; sitting; n = 2) fainted during the procedure. There was no statistically significant difference between the two biopsy positions regarding sensitivity (95 %) and specificity (100 %). Conclusions: More attention should be paid to patient care and, especially, preintervention information. Biopsies in the prone or sitting position are equally well tolerated. Somatic reactions are not a major problem during breast biopsy. Success and validity are independent of the biopsy position.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...