European journal of nuclear medicine
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Blunt abdominal trauma in a 9-year-old girl caused a subcapsular hematoma in the right liver lobe. One week following surgical evacuation of the hematoma severe hemobilia appeared. Blood pool scintigraphy of the liver demonstrated accumulation in the central part of the right liver lobe. After embolization of the right hepatic artery the bleeding ceased immediately, and blood pool scintigraphy became normal.
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Comparative Study
Point by Point Examination of the equilibrium gated radionuclide left ventricular time activity curve; validation by biplane angiography.
Examination of the time course of left ventricular ejection has been found useful in several clinical applications. Equilibrium gated radionuclide angiography provides non-invasive means to obtain the ventricular ejection curve. To evaluate the accuracy of the equilibrium gated radionuclide left ventricular volume curve we compared equilibrium gated radionuclide date with biplane cine-angiography in 16 patients examining each set of data on a point by point basis. ⋯ All data was normalized for the patient's heart rate and stroke volume. The equilibrium gated radionuclide angiographic data accurately reproduced the contrast angiographic data at each point on the curve. This result justifies using the equilibrium gated radionuclide time activity curve to evaluate parameters such as early systolic ejection rates or rates of maximum ventricular ejection.
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Comparative Study
The radiospirometric flow-volume diagram recording technique and comparative study with conventional spirometry.
The spirometric flow-volume diagram recorded for a forced expiration gives information which is used in assessing obstructive or restrictive pulmonary diseases. Regional data of the same kind can be achieved using a simple radiospirometric technique and scintillation camera. A series of images during inspiration and expiration are defined and a time-activity curve with an integration time constant of about 100-200 ms is obtained from the images during the forced expiration phase. ⋯ Normal subjects or patients with various diseases underwent classical spirometry, so that the global radioactive diagram could then be compared to the spirometric flow-volume diagram and its parameters expressed in terms of volumes and flow: vital capacity, peak flow, mean flow, flow at mean volume. The correlation with classical spirometry is highly significant. Similarly regional data are consistent with the pulmonary results.