A research has been done to compare Power Motion Doppler of TCD (PMD-TCD) with CT angiography (CTA), both are valid, but PMD-TCD accuracy is not higher than 85 percent.
Sebuah riset telah diadakan untuk membandingkan Power Motion Doppler TCD (PMD-TCD) dengan CT angiography (CTA), keduanya ternyata berguna, ketelitian PMD-TCD tidak melebihi 85 persen.