Power Doppler imaging and FFT analyses of cystic arteries in wall-thickening lesions of the gallbladder

OSAKABE Keisuke, HORIGUCHI Yuji, IMAI Hideo, SAKAMOTO Hiroshi, SUZUKI Tomohiro, KUBO Hiroshi, UEMATSU Masanao, TAKEUCHI Fumiyasu, SUZUKI Rie, NISHIKAWA Tohru

doi:10.11210/tando1987.15.1_35

Recent advances in color Doppler technology have allowed us to evaluate hemodynamics of the digestive organ. With the use of power Doppler imaging (PDI), for example, cystic arteries can be delineated as linear signals, so that Fast Fourier Transformation (FFT) analysis data can be obtained easily. The aim of this study is to assess the usefulness of PDI and FFT analysis for diagnosing wall-thickened lesions of the gallbladder.<BR>The subjects included 16 cases of gallbladder cancer,95 cases of acute cholecystitis,9 cases of granulomatous cholecystitis,20 cases of chronic cholecystitis, and 45 cases of GB adenomyomatosis.<BR>The machine used in this study was Acuson Sequoia 512 system (California, USA).<BR>Doppler signals were detected in all patients, and linear pattern signals were seen in most of the thickened wall. Maximal velocity values (Vmax) of the cystic artery were significantly higher in GB cancer, acute cholecystitis, and granulomatous cholecystitis. Pulsatile index calculated by FFT analysis were also higher in patients with GB cancer, acute cholecystitis, and adenomyomatosis. As for the differential diagnosis of gallbladder cancer from other wall thickening diseases, the Vmax value of 40 cm/sec or more and PT value of 1.29 or more seemed to be suggestive to the cancer.<BR>In conclusion, the evaluation of cholecystic flow by PDI and FFT analysis seems to be useful for the differential diagnosis of the wall-thickening lesions of the gallbladder.

Power Doppler imaging and FFT analyses of cystic arteries in wall-thickening lesions of the gallbladder

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