What type of study is this?

This is a Experimental Study study.

September 17, 2025

Single-breathhold cardiac T1, T2, T2*, and fat fraction mapping at 0.55T using dual rosette trajectory MRF and a deep image prior reconstruction

Puntos clave

Single-breathhold acquisition produced good agreement for T1, T2, and fat fraction metrics.
Measured values in 6 healthy subjects align with published literature, verifying method accuracy.
Dual rosette trajectory shapes enabled efficient cardiac imaging during limited respiratory windows.
New approach may reduce breathhold requirements, improving patient comfort and scan efficiency.

Resumen

Motivation: 0.55T systems have been introduced as a potential way to reduce the cost of MRI, but techniques need to be adapted for this field strength. Goal(s): In this work, a rosette cardiac Magnetic Resonance Fingerprinting approach is presented to map T1, T2, T2*, and proton density fat fraction at 0.55T. Approach: Efficient mapping is enabled through a multi-echo MRF deep image prior reconstruction and an acquisition that utilizes two different rosette trajectory shapes to make efficient use of limited respiratory and cardiac windows. Results: We demonstrate good agreement in phantoms, and compare values obtained in 6 healthy subjects to those published in literature. Impact: To reduce the time and number of breathholds required for a cardiac scan, we introduce a method for acquiring cardiac T1, T2, T2*, and proton density fat fraction maps at 0.55T from a single breathhold, 16-heartbeat sequence.

Me gusta

Guardar