title: Kidney and bladder pulsating activities during radioisotope renogram by computer data analysis.
abstract: This is a report of a new method in which the mathematical study of radioactivity changes in the bladder and kidney shows evidence of pulsating and vibratory activities. This study was done during radioisotope renogram with 99mTc DTPA. Spectral analysis of the recorded activities, taken 50 frames/sec and 1 frame every 10 sec by a scintillation camera connected to a computer, shows evidence of pulsating and vibratory activities of the kidney and the bladder. Slow pulsations with a period from 1/2 to 2 1/2 min were identified. Infrasonoric vibrations, from 2 to 25 Hz were found in the kidney, in a full bladder and during micturition.
mesh_terms: D000328:Adult; D000368:Aged; D002648:Child; D003201:Computers; D006801:Humans; D007668:Kidney / Q000502:physiology*; D008875:Middle Aged; D010507:Periodicity; D011866:Radioisotope Renography; D001743:Urinary Bladder / Q000502:physiology*