Hisashi Hidaka1, Guoqin Wang2, Takahide Nakazawa3, Mitsuhiro Kida3, Michiko Yanagihara4, Shigeru Fujii4, Akitaka Shibuya3, Wasaburo Koizumi3. 1. Department of Gastroenterology, Kitasato University School of Medicine, Kitasato University East Hospital, 2-1-1 Asamizodai, Minami-ku, Sagamihara, Kanagawa, 228-8520, Japan. hisashi7@kitasato-u.ac.jp. 2. Kitasato Clinical Research Center, Kitasato University School of Medicine, Sagamihara, Japan. 3. Department of Gastroenterology, Kitasato University School of Medicine, Kitasato University East Hospital, 2-1-1 Asamizodai, Minami-ku, Sagamihara, Kanagawa, 228-8520, Japan. 4. Department of Ultrasonography, Kitasato University East Hospital, Sagamihara, Japan.
Abstract
PURPOSE: We prospectively evaluated the validity of total and viable residual splenic volume after partial splenic embolization (PSE) with three-dimensional (3D) ultrasound (US) measurement. METHODS: Twenty patients with splenomegaly were included. All splenic volumes were measured with transabdominal US using virtual organ computer-aided analysis (VOCAL). The viable residual splenic volume after PSE was estimated by using contrast-enhanced (CE) US with VOCAL. The agreement of the measurements from VOCAL and computed tomography (CT) was confirmed using interclass correlation coefficients (ICCs) and Bland-Altman plots. RESULTS: Mean volume was 503 ± 250 ml for total spleen and 209 ± 108 ml for viable residual volume. Regarding total volume, there was a high correlation and agreement (ICCs = 0.90) between 3D US and CT volumetry. Regarding viable residual volume, although there was a moderate correlation between 3D CEUS and CT volumetry, mean ICCs of 0.617 indicated poor agreement. With Bland-Altman plots, a narrow 95 % limit of agreement was observed among patients with a total volume under 1000 ml. CONCLUSION: The total splenic volume could be accurately estimated with 3D US. However, estimation of viable residual splenic volume should be limited in cases with total splenic volume under 1000 ml.
PURPOSE: We prospectively evaluated the validity of total and viable residual splenic volume after partial splenic embolization (PSE) with three-dimensional (3D) ultrasound (US) measurement. METHODS: Twenty patients with splenomegaly were included. All splenic volumes were measured with transabdominal US using virtual organ computer-aided analysis (VOCAL). The viable residual splenic volume after PSE was estimated by using contrast-enhanced (CE) US with VOCAL. The agreement of the measurements from VOCAL and computed tomography (CT) was confirmed using interclass correlation coefficients (ICCs) and Bland-Altman plots. RESULTS: Mean volume was 503 ± 250 ml for total spleen and 209 ± 108 ml for viable residual volume. Regarding total volume, there was a high correlation and agreement (ICCs = 0.90) between 3D US and CT volumetry. Regarding viable residual volume, although there was a moderate correlation between 3D CEUS and CT volumetry, mean ICCs of 0.617 indicated poor agreement. With Bland-Altman plots, a narrow 95 % limit of agreement was observed among patients with a total volume under 1000 ml. CONCLUSION: The total splenic volume could be accurately estimated with 3D US. However, estimation of viable residual splenic volume should be limited in cases with total splenic volume under 1000 ml.
Authors: R S Breiman; J W Beck; M Korobkin; R Glenny; O E Akwari; D K Heaston; A V Moore; P C Ram Journal: AJR Am J Roentgenol Date: 1982-02 Impact factor: 3.959