The passage of the dye through the blood vessels is recorded by two small photo-electric cells
- Collection:
- Images from the History of Medicine (IHM)
- Contributor(s):
- Spooner, photographer
- Language(s):
- English French
- Format:
- Still image
- Subject(s):
- Cardiovascular Diseases Equipment and Supplies World Health Organization
- Abstract:
- Close-up of an ear with a photo-electric apparatus attached. Verso: WHO/9160. England- Research-Cardiovascular diseases. The Photoelectric cell records. The use of the photo-electric cell has greatly simplified the application of an idea already put forward in the last century. Basically the technique is to inject a dye into a vein where it is carried to the heart and then to sample at intervals the concentrate ion of the dye into a vain where it is carried to the heart and then to sample at intervals the concentrate ion of the dye in the arterial blood coming from the heart. The main purpose is to estimate the heart's output but the method has been further developed to investigate the heart's activity in some detail. One of the latest refinements is shown in our photo. A light is shone through the ear passage of the dye through the blood vessels is recorded by two small photo-electric cells.
- Copyright:
- WHO must be mentioned in accompanying text and/or given credit This item may be under copyright protection. Please ask copyright owner for permission before publishing.
- Copyright Holder:
- World Health Organization; Source: Record; Research date: 20151020
- Extent:
- 1 photoprint.
- NLM Unique ID:
- 101437048 (See catalog record)
- NLM Image ID:
- A013900
- Permanent Link:
- http://resource.nlm.nih.gov/101437048