Comparison of two volumetric techniques for estimating liver volume using magnetic resonance imaging

2002 ◽  
Vol 15 (5) ◽  
pp. 557-563 ◽  
Author(s):  
Michael Mazonakis ◽  
John Damilakis ◽  
Thomas Maris ◽  
Panos Prassopoulos ◽  
Nicholas Gourtsoyiannis
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Liver Volume ◽  
Resonance Imaging

scholarly journals Volume Change and Liver Parenchymal Signal Intensity in Gd-EOB-DTPA-Enhanced Magnetic Resonance Imaging after Portal Vein Embolization prior to Hepatectomy

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Ayako Akiba ◽  
Satoru Murata ◽  
Takahiko Mine ◽  
Shiro Onozawa ◽  
Tetsuro Sekine ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Portal Vein ◽  
Volume Change ◽  
Portal Vein Embolization ◽  
Liver Volume ◽  
Resonance Imaging ◽  
Ct Volumetry ◽  
Liver Remnant ◽  
Enhanced Mri

Purpose.To investigate the liver volume change and the potential of early evaluation by contrast-enhanced magnetic resonance imaging (MRI) using gadolinium-ethoxybenzyl-diethylenetriamine pentaacetic acid (Gd-EOB-DTPA) after portal vein embolization (PVE).Materials and Methods.Retrospective evaluations of computed tomography (CT) volumetry of total liver and nonembolized areas were performed before and 3 weeks after PVE in 37 cases. The percentage of future liver remnant (%FLR) and the change ratio of %FLR (%FLR ratio) were calculated. Prospective evaluation of signal intensities (SIs) was performed to estimate the role of Gd-EOB-DTPA-enhanced MRI as a predictor of hypertrophy in 16 cases. The SI contrast between embolized and nonembolized areas was calculated 1 week after PVE. The change in SI contrast before and after PVE (SI ratio) was also calculated in 11 cases.Results.%FLR ratio significantly increased, and SI ratio significantly decreased (bothP<0.01). There were significant negative correlations between %FLR and SI contrast and between %FLR and SI ratio (bothP<0.01).Conclusion.Hypertrophy in the nonembolized area after PVE was indicated by CT volumetry, and measurement of SI contrast and SI ratio in Gd-EOB-DTPA-enhanced MRI early after PVE may be useful to predict the potential for hepatic hypertrophy.

scholarly journals Accuracy and significance of pretransplant liver volume measured by magnetic resonance imaging

1996 ◽  
Vol 2 (6) ◽  
pp. 438-442 ◽  
Author(s):  
S. H. Caldwell ◽  
E. E. De Lange ◽  
M. J. Gaffey ◽  
M. Sue ◽  
J. C. Boyd ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Liver Volume ◽  
Resonance Imaging

Reproducibility of Lung and Liver Volume Measurements on Fetal Magnetic Resonance Imaging in Left-Sided Congenital Diaphragmatic Hernia

2021 ◽  
Vol 48 (4) ◽  
pp. 258-264
Author(s):  
Amy B. Kolbe ◽  
Eniola R. Ibirogba ◽  
Kristen B. Thomas ◽  
Nathan C. Hull ◽  
Paul G. Thacker ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Congenital Diaphragmatic Hernia ◽  
Lung Volume ◽  
Liver Volume ◽  
Left Lung ◽  
Resonance Imaging ◽  
Lung Volume Measurements ◽  
Fetal Magnetic Resonance Imaging ◽  
Volume Measurements

<b><i>Introduction:</i></b> Congenital diaphragmatic hernia (CDH) affects 1 in 3,000 live births and is associated with significant morbidity and mortality. <b><i>Methods:</i></b> A review of fetal magnetic resonance imaging (MRI) examinations was performed for fetuses with left CDH and normal lung controls. Image review and manual tracings were performed by 4 pediatric radiologists; right and left lung volumes in the coronal and axial planes as well as liver volume above and below the diaphragm in the coronal plane were measured. Intra- and interreviewer reproducibility was assessed using intraclass correlation coefficient (ICC) and Bland-Altman analysis. <b><i>Results:</i></b> Excellent intra- and interreviewer reproducibility of the right and left lung volume measurements was observed in both axial planes (interreviewer ICC: right lung: 0.97, 95% CI: 0.95–0.99; left lung: 0.97, 95% CI: 0.95–0.98) and coronal planes (interreviewer ICC: right lung: 0.97, 95% CI: 0.95–0.98; left lung: 0.96, 95% CI: 0.93–0.98). Moderate-to-good interreviewer reproducibility was observed for liver volume above the diaphragm (ICC 0.7, 95% CI: 0.59–0.81). Liver volume below the diaphragm had a good-to-excellent interreviewer reproducibility (ICC 0.88, 95% CI: 9.82–0.93). <b><i>Conclusions:</i></b> The present study demonstrated an excellent intra- and interreviewer reproducibility of MRI lung volume measurements and good-to-moderate inter- and intrareviewer reproducibility of liver volume measurements after standardization of the methods at our fetal center.

scholarly journals Comparative Evaluation of 4-Dimensional Computed Tomography and 4-Dimensional Magnetic Resonance Imaging to Delineate the Target of Primary Liver Cancer

2021 ◽  
Vol 20 ◽  
pp. 153303382110454
Author(s):  
Yukai Chen ◽  
Guanzhong Gong ◽  
Yinxing Wang ◽  
Chenlu Liu ◽  
Ya Su ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Liver Cancer ◽  
Primary Liver Cancer ◽  
Organs At Risk ◽  
Liver Volume ◽  
Resonance Imaging ◽  
Tumor Delineation ◽  
The Difference

Purpose: To evaluate the feasibility of 4-dimensional magnetic resonance imaging (4DMRI) in establishing the target of primary liver cancer in comparison with 4-dimensional computed tomography (4DCT). Methods and Materials: A total of 23 patients with primary liver cancer who received radiotherapy were selected, and 4DCT and T2w-4DMRI simulations were conducted to obtain 4DCT and T2w-4DMRI simulation images. The 4DCT and T2w-4DMRI data were sorted into 10 and 8 respiratory phase bins, respectively. The liver and gross tumor volumes (GTVs) were delineated in all images using programmed clinical workflows under tumor delineation guidelines. The internal organs at risk volumes (IRVs) and internal target volumes (ITVs) were the unions of all the phase livers and GTVs, respectively. Then, the artifacts, liver volume, GTV, and motion range in 4DCT and T2w-4DMRI were compared. Results: The mean GTV volume based on 4DMRI was 136.42 ± 231.27 cm3, which was 25.04 cm3 (15.5%) less than that of 4DCT (161.46 ± 280.29 cm3). The average volume of ITV determined by 4DMRI was 166.12 ± 270.43 cm3, which was 22.44 cm3 (11.9%) less than that determined by 4DCT (188.56 ± 307.57 cm3). Liver volume and IRV in 4DMRI increased by 4.0% and 6.6%, respectively, compared with 4DCT. The difference in tumor motion by T2w-4DMRI based on the centroid was greater than that of 4DCT in the L/R, A/P, and S/I directions, and the average displacement differences were 2.6, 2.8, and 6.9 mm, respectively. The severe artifacts in 4DCT were 47.8% (11/23) greater than in 4DMRI 17.4% (4/23). Conclusions: Compared with 4DCT, T2-weighted and navigator-triggered 4DMRI produces fewer artifacts and larger motion differences in hepatic intrafraction tumors, which is a feasible technique for primary liver cancer treatment planning.

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