T1 mapping of the liver and the spleen in patients with liver fibrosis-does normalization to the blood pool increase the predictive value?

Obmann, Verena Carola; Berzigotti, Annalisa; Catucci, Damiano; Ebner, Lukas; Gräni, Christoph; Heverhagen, Johannes; Christe, Andreas; Huber, Adrian Thomas (2021). T1 mapping of the liver and the spleen in patients with liver fibrosis-does normalization to the blood pool increase the predictive value? European radiology, 31(6), pp. 4308-4318. Springer-Verlag 10.1007/s00330-020-07447-8

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PURPOSE

To analyze whether the T1 relaxation time of the liver is a good predictor of significant liver fibrosis and whether normalization to the blood pool improves the predictive value.

METHODS

This prospective study was conducted between 03/2016 and 02/2018. One hundred seventy-three patients underwent multiparametric liver MRI at 3 T. The T1 relaxation time was measured in the liver and the spleen, in the aorta, the portal vein, and the inferior vena cava (IVC). T1 relaxation times with and without normalization to the blood pool were compared between patients with (n = 26) and without (n = 141) significant liver fibrosis, based on a cutoff value of 3.5 kPa in MRE as the noninvasive reference standard. For statistics, Student's t test, receiver operating characteristic (ROC) curve analysis, and Pearson's correlation were used.

RESULTS

The T1 relaxation time of the liver was significantly longer in patients with liver fibrosis, both with and without blood pool normalization (p < 0.001). T1 relaxation time of the liver allowed prediction of significant liver fibrosis (AUC = 0.88), while normalization to the IVC resulted in a slightly lower performance (AUC = 0.82). The lowest performance was achieved when the T1 relaxation times of the liver were normalized to the aorta (AUC = 0.66) and to the portal vein (AUC = 0.62). The T1 relaxation time of the spleen detected significant liver fibrosis with an AUC of 0.68, and 0.51-0.64 with normalization to the blood pool.

CONCLUSION

The T1 relaxation time of the liver is a good predictor of significant liver fibrosis. However, normalization of the blood pool did not improve the predictive value.

KEY POINTS

• The T1 relaxation time of the liver is a good predictor of significant liver fibrosis. • Normalization to the blood pool did not improve the predictive value of T1 mapping. • If the blood pool normalization was weighted 30% to the aorta and 70% to the portal vein, the performance was better than normalization to the aorta alone but still lower than normalization to the IVC.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Department of Radiology, Neuroradiology and Nuclear Medicine (DRNN) > Institute of Diagnostic, Interventional and Paediatric Radiology
04 Faculty of Medicine > Department of Cardiovascular Disorders (DHGE) > Clinic of Cardiology
04 Faculty of Medicine > Department of Gastro-intestinal, Liver and Lung Disorders (DMLL) > Clinic of Visceral Surgery and Medicine > Hepatology

UniBE Contributor:

Obmann, Verena Carola; Berzigotti, Annalisa; Ebner, Lukas; Gräni, Christoph; Heverhagen, Johannes; Christe, Andreas and Huber, Adrian Thomas

Subjects:

600 Technology > 610 Medicine & health

ISSN:

0938-7994

Publisher:

Springer-Verlag

Language:

English

Submitter:

Rahel Fuhrer

Date Deposited:

15 Dec 2020 17:11

Last Modified:

20 May 2021 01:32

Publisher DOI:

10.1007/s00330-020-07447-8

PubMed ID:

33313965

Uncontrolled Keywords:

Cirrhosis Elasticity imaging techniques Extracellular space Liver fibrosis Magnetic resonance imaging

BORIS DOI:

10.7892/boris.149675

URI:

https://boris.unibe.ch/id/eprint/149675

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