Patent ID: 8292816

Claim:
An ultrasonic image diagnostic apparatus capable of performing three-dimensional ultrasonic scanning on a subject, and displaying an arbitrary first tomographic image of the subject and a second tomographic image perpendicular to a cross section of the first tomographic image, by using ultrasonic data in a three-dimensional region obtained according to the ultrasonic scanning, comprising: an image processor, including a CPU, configured to: set a first line segment and a second line segment, which are not parallel to each other, on the first tomographic image, and setting a third line segment, which is not parallel to the cross section of the first tomographic image, on the second tomographic image, as line segments to be measured; set a longer line segment of the first and second line segments as a major axis, setting a line segment which is obtained by projecting a shorter line segment of the first and second line segments on an axis orthogonal to the major axis as a minor axis; set the third line segment as a depth length; and cause the CPU to perform a volume measurement of the subject by means of ellipsoidal approximation using only the first tomographic image and the second tomographic image in which the major axis, the minor axis, and the depth length are used as coefficients; and a display configured to display a measurement result and a measurement range obtained by the image processor.