A method for aligning a spatially different subvolumes of the ultrasound data of the blood vessel, the method using a device having a two-dimensional array of ultrasound transducer elements, spatially opposed by each transducer element comprising the steps of: obtaining a temporally discontinuous signal of the blood vessel from scanning different depths, the array against the vessel during the step of the acquisition is disposed in a first position, acquiring the first three-dimensional map of the spectral Doppler data temporally discontinuous signals received from each transducer element to Doppler processing, steps and generating a spectral Doppler data of the scan depth opposed by each transducer element and generating a spatial relationship to the position of the array to the vessel using a device having a two-dimensional array of ultrasound transducer elements, in time of the vessel from the scanning spatially different depths opposed by each transducer element comprising the steps of: obtaining a discrete signal, the array against the vessel during the step of the acquisition is disposed in the second position, acquiring temporally received from each transducer element not in spatial relationship of the second 3-D map of the spectral Doppler data on the position of the array to the vessel a continuous signal by Doppler processing, steps and generating a spectral Doppler data of the scan depth opposed by each transducer element based on one or more regions of matching spectral Doppler data of the two maps, step a of the first three-dimensional map aligned with the second three-dimensional map step and generating the aligned and generating a three-dimensional coupling maps of blood flow blood vessel from the first and second three-dimensional map comprising.血管の超音波データの空間的に異なるサブボリュームを位置合わせするための方法であって、当該方法は、超音波トランスデューサ素子の2次元アレイの素子を用いて、各トランスデューサ素子によって対向する空間的に異なる深さのスキャニングから血管の時間的に不連続な信号を取得するステップであって、アレイは、この取得するステップの間に血管に対して第1の位置に配置される、取得するステップと;各トランスデューサ素子から受信した時間的に