Transverse relaxation results from spins getting out of phase. As spins move together, their magnetic fields interact spin-spin interaction , slightly modifying their precession rate. These interactions are temporary and random.
Thus, spin-spin relaxation causes a cumulative loss in phase resulting in transverse magnetization decay. Transverse magnetization decay is described by an exponential curve, characterized by the time constant T2. T2 is tissue-specific and is always shorter than T1.
Transverse relaxation is faster than longitudinal relaxation. T2 values are unrelated to field strength. IMAIOS and selected third parties, use cookies or similar technologies, in particular for audience measurement.
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These are cookies intended to measure the audience: it allows to generate usage statistics useful for the improvement of the website. Verify now. Toggle navigation. Edit article. View revision history Report problem with Article. Citation, DOI and article data. Drew, Z. Longitudinal and transverse magnetization. Reference article, Radiopaedia.
URL of Article. Longitudinal magnetism Longitudinal magnetization is the component of the net magnetization vector parallel to the magnetic field z-axis. Transverse magnetization Transverse magnetization is the component of the net magnetization vector perpendicular to the magnetic field x-y plane.
Transverse vs longitudinal During excitation, the longitudinal magnetization decreases. Jerrold T. Bushberg, John M. The Essential Physics of Medical Imaging. Related articles: Imaging physics. Promoted articles advertising. Loading more images Close Please Note: You can also scroll through stacks with your mouse wheel or the keyboard arrow keys.
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