A sensor system adapted for characterizing a region of interest within a subject while minimizing bleeding is provided. The sensor system comprises a hollow tool configured to be inserted into the subject, the hollow tool comprising an orifice positioned at an angle with respect to its horizontal axis, a probe disposed within the hollow tool and configured to transmit data from the region of interest wherein the probe protrudes from the orifice of the hollow tool to be in contact with the region of interest and processing circuitry coupled to the probe and configured to process the sensed data to characterize the region of interest.
