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NCT05154656

Three-Dimensional T1rho Using Spiral Fast Spin Echo

Withdrawn Last updated 1 September 2023
What this trial tests

trial in Liver Fibrosis. Withdrawn.

Timeline
1 January 2020
Primary endpoint
31 December 2022
30 June 2023

Quick facts

Lead sponsorChinese University of Hong Kong
StatusWithdrawn
Study typeOBSERVATIONAL
Start date1 January 2020
Primary completion31 December 2022
Estimated completion30 June 2023
Sites1 location across Hong Kong

Conditions studied

Sponsor

Chinese University of Hong Kong

Who can join

Adults 18 to 55, any sex, with Liver Fibrosis. Patients with the condition only — healthy volunteers not accepted.

Sponsor's own description

Liver fibrosis is the main feature in early chronic liver diseases. If identified early, liver fibrosis is reversible. The current gold standard for diagnosing liver fibrosis is invasive liver biopsy. Existing non-invasive methods still have significant limitations. T1rho imaging is a promising non-invasive technology evaluating liver fibrosis. It does not require exogenous contrast agent or extra hardware. However, it remains challenging to perform T1rho measurements of the liver. The rich blood signal in the liver introduces quantification errors of liver parenchyma. The existing black blood MRI technologies are based on Cartesian FSE acquisitions, which are not optimal for liver imaging. The residual blood signal is often observed which confounds the measurement. Current T1rho measurement of the liver is mostly performed in two-dimension. 3D coverage of liver is desirable. However, 3D T1rho imaging of liver suffers from long scan time due to increased spatial coverage, reduced scan time efficiency from motion compensation, and high specific absorption rate (SAR). The investigators aim to overcome these challenges by developing 3D T1rho imaging technologies based on magnetization prepared spiral FSE acquisition. Compared to Cartesian FSE, Spiral FSE traverses k-space more efficiently per unit of time, and has reduced SAR due to significantly decreased number of radiofrequency pulses in the echo trains. Spiral acquisition has zero gradient moment at the kspace center, which substantially reduces its sensitivity to respiratory motion. The residual motion manifests as benign incoherent artifacts in the image domain rather than detrimental structured artifacts. Differently to Cartesian FSE, Spiral FSE provides flexibility to design and optimize flow-sensitizing gradients throughout the echo trains to achieve superior suppression of blood signal. The investigators will evaluate the proposed pulse sequences in both healthy controls and patients with liver fibrosis. This project will provide new black blood imaging technologies and a 3D diagnostic tool for early detection of liver fibrosis. This will improve clinical outcomes for patients with chronic liver disease, and provide a springboard for further development of MRI technology for other purposes.

Publications & conference data

No peer-reviewed publications indexed yet for this trial.

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Other recruiting trials for Liver Fibrosis

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