Key result
New videodensitometer system approximates mean blood flow during routine arteriography without complex computing.
Why the study?
A method to approximate mean blood flow measurements during routine arteriography without increasing morbidity or requiring complex computing was needed.
The developed videodensitometer system enables on-line approximation of mean blood flow during routine arteriography without additional morbidity or complex computing.
May enable simplified on-line flow approximation in routine arteriography; leaves open prospective validation before clinical adoption.
A system has been developed which allows one to approximate mean blood flow measurements during routine arteriography, where catheter placement is monitored by the televised output of an image intensified fluoroscope. The basic features of the system developed are: (1) The technique makes use of data already available from routine angiography. (2) There is no increase in morbidity over that associated with routine arteriography. (3) The flow measurements are independent of the site of injection of the contrast material and independent of the concentration as well. (4) The measuring technique is valid in almost any vessel that can be resolved and/or magnified by an image intensified medical fluoroscope. (5) The measurements can be obtained on-line and do not require the use of complex computing facilities.
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Silverman et al. (1973) studied this question. Videodensitometer system was evaluated. A videodensitometer system was developed to approximate mean blood flow measurements during routine arteriography using data from an image intensified fluoroscope without complex computing facilities.
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