http://www.cnr.it/ontology/cnr/individuo/prodotto/ID24665
Do shorter wavelengths improve contrast in optical mammography? (Articolo in rivista)
- Type
- Label
- Do shorter wavelengths improve contrast in optical mammography? (Articolo in rivista) (literal)
- Anno
- 2004-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1088/0031-9155/49/7/008 (literal)
- Alternative label
Taroni, Paola; Pifferi, Antonio; Torricelli, Alessandro; Spinelli, Lorenzo; Danesini, Gian Maria; Cubeddu, Rinaldo (2004)
Do shorter wavelengths improve contrast in optical mammography?
in Physics in medicine and biology (Print)
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- Taroni, Paola; Pifferi, Antonio; Torricelli, Alessandro; Spinelli, Lorenzo; Danesini, Gian Maria; Cubeddu, Rinaldo (literal)
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- Politecnico di Milano; Dipartimento di Radiologia (literal)
- Titolo
- Do shorter wavelengths improve contrast in optical mammography? (literal)
- Abstract
- The detection of tumours with time-resolved transmittance imaging relies essentially on blood absorption. Previous theoretical and phantom studies have shown that both contrast and spatial resolution of optical images are affected by the optical properties of the background medium, and high absorption and scattering are generally beneficial. Based on these observations, wavelengths shorter than presently used (680-780 nm) could be profitable for optical mammography. A study was thus performed analysing time-resolved transmittance images at 637, 656, 683 and 785 nm obtained from 26 patients bearing 16 tumours and 15 cysts. The optical contrast proved to increase upon decreasing wavelengths for the detection of cancers in late-gated intensity images, with higher gain in contrast for lesions of smaller size (<1.5 cm diameter). For cysts either a progressive increase or decrease in contrast with wavelength was observed in scattering images. © 2004 IOP Publishing Ltd. (literal)
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