0000000000007615

AUTHOR

R. Lotz

showing 2 related works from this author

Duplexsonographie der normalen Pfortader

2008

In 50 normal subjects flow velocity and direction on the portal vein was measured by ultrasonic duplex system. The measurements revealed at a mean diameter of 9.7 mm, a mean flow velocity of 15.2 +/- 2.6 cm/s, corresponding to a volume flow of 693 +/- 235 ml/min. Postprandially this increased to 880 +/- 269 ml/min. Inter-observer and day to day measurements demonstrated good reproducibility. Thus, this simple non-invasive method is well suited for quantitative assessment of the portal vein system in portal hypertension, thrombosis or after shunt operations.

ReproducibilityMaterials sciencebusiness.industryPortal veinGeneral Medicinemedicine.diseaseThrombosisFlow velocitymedicineDuplex sonographyQuantitative assessmentPortal hypertensionNuclear medicinebusinessShunt (electrical)DMW - Deutsche Medizinische Wochenschrift
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Duplexsonographie abdomineller Gefäße

1987

Duplex sonography is a non-invasive procedure which permits the determination of flow velocity and direction in visceral vessels. Results in 50 normals have shown that small arteries can be evaluated in about 50% of cases. The portal venous system can be demonstrated in all cases; average flow velocity and volume is 15.2 +/- 2.8 cm/s and 694 +/- 230 ml/min, corresponding with the values obtained by invasive methods. Clinical application for duplex examinations can be found in portal hypertension, varices, thromboses, aneurysms and transplant kidneys.

medicine.medical_specialtybusiness.industryPortal venous systemfood and beveragesmedicine.diseaseSurgerymedicine.anatomical_structureFlow velocityDuplex (building)Duplex sonographyMedicineAbdomenPortal hypertensionRadiology Nuclear Medicine and imagingVaricesNuclear medicinebusinessAbdominal vesselsRöFo - Fortschritte auf dem Gebiet der Röntgenstrahlen und der bildgebenden Verfahren
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