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Panminerva Medica 1998 March;40(1):1-7

Copyright © 2000 EDIZIONI MINERVA MEDICA

lingua: Inglese

Ultrasonic image analysis of the arterial wall in atherosclerosis

Coend L. D., Ramaswami G., Chan Ma P., Belcaro G., Nicolaides A. N.

From the Irvine Laboratory Academic Surgical Unit, St. Mary’s Hospital, London


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Background. Atherosclerotic carot­id ­artery ­plaques ­can be clas­si­fied on ­the ­basis of ­their ultra­sound appear­ance accord­ing to ­the pat­tern of echol­u­cen­cy ­and echog­e­nic­ity. The ­most com­mon­ly ­used clas­sifi­ca­tion is ­the ­one ­described by Gray-Weale ­who ­defined 4 ­plaque ­types.
Methods. The imag­es of ­the carot­id ­and femo­ral arter­ies of 9 ­healthy vol­un­teers ­and 21 ­non-insu­lin depen­dent dia­bet­ic ­patients ­were ana­lysed. In ­this ­study 16 ath­e­ros­cle­rot­ic carot­id ­artery ­plaques ­were ­imaged by B-­mode ­high res­o­lu­tion ultra­so­nog­ra­phy ­and ­then sub­ject­ed to anal­y­sis of ­the dig­it­ised imag­es.
Results. The ­results ­show ­that ­the ­plaques ­could be sep­ar­at­ed ­into 3 ­groups accord­ing to ­their ech­o­gen­ic prop­er­ties. Gray-Weale ­plaques ­types 2 ­and 3 ­could ­not be dis­tin­guished ­and it is pro­posed ­that ­these ­should be clas­si­fied as a sin­gle ­group.
Conclusions. An ­increased echog­e­nic­ity in ­the inti­ma-­media com­plex of ­non-insu­lin depen­dent dia­bet­ics as ­well as a rela­tion­ship ­with ­risk fac­tors ­for ­the devel­op­ment of car­di­o­vas­cu­lar dis­ease ­and ­with ­the ultra­sound ­score ­could ­not be deter­mined in ­this ­study.

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