-transparent.png){kind=logo}
Knowledge of the regional ventilation/perfusion ratio is of great interest for the diagnosis and therapy of disorders of pulmonary function. By injecting intravenously a bolus of Xe-133 during breathholding and by recording the influx of activity into the lung with a scintillation camera and analogue tape storage, the regional perfusion of the lungs can be determined, using the count-rate increase per unit time. Once the maximum count-rate is reached the patient is allowed to breathe normally. The slope of the count-rate decrease over the lungs is a measure of ventilation. The regional ventilation/perfusion ratio is calculated by dividing these two indices. Regional disturbances of the ratio are the most frequent cause of hypoxia. The demonstration of such disturbances are therefore of significance in the diagnosis and therapeutic control of pulmonary diseases.
H Imhof, and
W Schlick
January 1970,
The American journal of roentgenology, radium therapy, and nuclear medicine,
H Imhof, and
W Schlick
January 1970,
Archivio per le scienze mediche,
H Imhof, and
W Schlick
May 1974,
Nuclear-Medizin,
H Imhof, and
W Schlick
December 1980,
Journal of the Canadian Association of Radiologists,
H Imhof, and
W Schlick
January 1970,
Archivio per le scienze mediche,
H Imhof, and
W Schlick
January 1972,
Lotta contro la tubercolosi,
H Imhof, and
W Schlick
March 1973,
The American review of respiratory disease,
H Imhof, and
W Schlick
July 1966,
Casopis lekaru ceskych,
H Imhof, and
W Schlick
July 1974,
Radiology,
