Heart motion imaging system
Abstract
Abstract HEART MOTION IMAGING SYSTEM IN WHICH A RAPIDLY MOVAND IN WHICH A COMPLETE IMAGE CORRESPONDING TO A CROSSAND WHICH A COMPLETE IMAGE CORRESPONDING TO A CROSSSECTION OF THE BEATING HEART IS PRODUCED ON AN OSCILLOSCOPE SCREEN DURING A TIME INTERVAL WHICH IS A SMALL FRACTION OF THE DURATION OF THE HEART CYCLE AND WHICH CORRESPONDS TO A SPECIFIC PORTION OF THE HEART CYCLE, THE TIME AND DURATION OF THE TIME INTERVAL BEING CONTINUOUSLY VARIABLE. IN ONE MODE OF OPERATION, A SINGLE IMAGE IS PRODUCED DURING A SPECIFIC PORTION OF ONE HEART CYCLE, WHICH MAY BE RECORDED ON FILM. IN A SECOND MODE, MULTIPLE IMAGES ARE PRODUCED DURING THE SAME SPECIFIC PORTIONS OF SUCCESSIVE HEART CYCLES TO PRODUCE IMAGES WHICH ARE INTEGRATED ON THE OSCILLOSCOPE SCREEN AND/OR ON A SINGLE SECTION OF FRAME OF FILM. IN THIS MODE, COMPOUND SCANNING MAY BE USED. IN A THIRD MODE, MULTIPLE IMAGES ARE PRODUCED DURING PROGRESSIVELY DIFFERENT PORTIONS OF SUCCESSIVE HEART CYCLES TO PRODUCE A SLOW MOTION SHOWING OF MOVEMENT OF THE HEART AND VALVES THEREOF. SUCH MULTIPLE IMAGES MAY BE RECORDED TO SUCESSIVE FRAMES OF FILM TO BE PROJECTED AT A DESIRED SPEED FOR EXAMINATION.
Inventors
- 👤 John J Flaherty
Bibliographic Details
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |