A pre-operative device includes at least one elongated probe (1) integrating
at least one element for detecting radioactive radiation (3) emitted by
tissues (4) marked by radioactive isotopes or radioactive colloids, generating
a first representative electrical signal (5), at least one element (6)
for emitting luminous radiation toward the tissues (4) and at least one
element (7) for receiving and transmitting reflected luminous radiation
(8) reflected by the tissues (4) marked by vital colorants or magnetic
markers, toward at least one element (9) for converting the reflected luminous
radiation (8) into a second representative electrical signal (10),
electrical connection elements for conveying the first and second electrical signals
(5, 10) and, at least one electronic means (11) for processing electronic signals.
