Ultrasound data processing device

An ultrasound data processing apparatus for processing ultrasound data obtained by transmitting and receiving ultrasound with respect to a three-dimensional space containing a target, the apparatus comprising:

• a trace cross-section setting unit that sets a plurality of manual trace cross-sections within a three-dimensional data space constituted with three-dimensionally arranged ultrasound data;
• a trace line forming unit that forms, in each of the manual trace cross-sections, a trace line corresponding to a contour of the target in accordance with a user operation;
• a contour information generating unit that generates steric contour information of the target within the three-dimensional data space based on a manual trace cross-section having a trace line already formed therein;
• and
• a trace assisting unit that forms, in a manual trace cross-section in which a trace line is to be formed subsequently, a trace guide two-dimensionally reflecting the contour information, wherein the trace line forming unit forms, in a manual trace cross-section having the trace guide formed therein, a trace line in accordance with an operation performed by a user while referring to the trace guide.