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J Ultrasound Med. 2005 Mar;24(3):363-9.

Assessment of portal vein invasion in pancreatic cancer by fusion 3-dimensional ultrasonography.

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  • 1Department of Medicine and Clinical Oncology, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuou-ku, Chiba-shi, Chiba 260-8670, Japan.

Abstract

OBJECTIVE:

The purpose of this study was to assess the usefulness of a newly developed imaging technique, fusion 3-dimensional ultrasonography (3DUS) in the diagnosis of portal vein (PV) invasion in patients with pancreatic cancer (PC).

METHODS:

Fourteen patients with proven PC were examined by fusion 3DUS presented as shaded volume-rendering and multiplanar reconstruction images. The surgical findings were obtained in all patients (12 with resection and 2 without). The findings were compared with those of 2-dimensional ultrasonography (2DUS), contrast-enhanced computed tomography (CT), dynamic CT (DCT), angiography, and surgical findings. Portal vein invasion was assessed by 3 independent radiologists for each modality, and objectivity of the assessment was examined by interobserver variability analysis (kappa value).

RESULTS:

On the basis of surgical findings, the accuracy rates of 2DUS, fusion 3DUS, DCT, and angiography were 78.6%, 92.9%, 85.3%, and 66.7%, respectively. The kappa values of 2DUS, fusion 3DUS, DCT, and angiography for PV invasion were 0.57, 0.90, 0.63, and 0.49, respectively, being most objective in fusion 3DUS.

CONCLUSIONS:

Fusion 3DUS is useful for diagnosis of PV invasion of PC.

PMID:
15723849
[PubMed - indexed for MEDLINE]
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