magnetic relaxation time


magnetic relaxation time
параметр магнитной релаксации

Англо-русский медицинский словарь. 2012.

Смотреть что такое "magnetic relaxation time" в других словарях:

  • relaxation time — any of several measures of loss of energy by magnetized materials (particularly hydrogen ions) after a magnetizing current is cut off; in magnetic resonance imaging two particularly useful measures are T1 relaxation t. and T2 relaxation t. (q.v.) …   Medical dictionary

  • T1 relaxation time — a component of relaxation time representing the time required for longitudinal magnetization of a substance to return to equilibrium with its surroundings after administration of a pulse of radiofrequency energy; different substances have… …   Medical dictionary

  • T2 relaxation time — a component of relaxation time representing the time required for decay or loss of transverse magnetization after administration of a pulse of radiofrequency energy; different substances have different times that are measured in magnetic… …   Medical dictionary

  • Spin-lattice relaxation time — Spin lattice relaxation time, known as T1, is a time constant in Nuclear Magnetic Resonance and Magnetic Resonance Imaging. It is named in contrast to T2, the spin spin relaxation time.T1 characterizes the rate at which the longitudinal Mz… …   Wikipedia

  • Spin-spin relaxation time — Spin spin relaxation time, known as T2, is a time constant in Nuclear Magnetic Resonance and Magnetic Resonance Imaging. It is named in contrast to T1, the spin lattice relaxation time.T2 characterizes the rate at which the Mxy component of the… …   Wikipedia

  • Magnetic hyperthermia — is the name given to an experimental cancer treatment. It is based on the fact that magnetic nanoparticles, when subjected to an alternating magnetic field, produce heat. As a consequence, if magnetic nanoparticles are put inside a tumor and the… …   Wikipedia

  • Relaxation (NMR) — In nuclear magnetic resonance (NMR) spectroscopy and magnetic resonance imaging (MRI) the term relaxation describes several processes by which nuclear magnetization prepared in a non equilibrium state return to the equilibrium distribution. In… …   Wikipedia

  • Magnetic resonance imaging — MRI redirects here. For other meanings of MRI or Mri, see MRI (disambiguation). Magnetic resonance imaging Intervention Sagittal MR image of the knee ICD 10 PCS B?3?ZZZ …   Wikipedia

  • relaxation phenomenon — ▪ physics and chemistry Introduction       in physics and chemistry, an effect related to the delay between the application of an external stress to a system that is, to an aggregation of matter and its response. It may occur in nuclear, atomic,… …   Universalium

  • Magnetic resonance neurography — Bilateral Split Sciatic Nerve Magnetic resonance neurography (MRN) is the direct imaging of nerves in the body by optimizing selectivity for unique MRI water properties of nerves. It is a modification of magnetic resonance imaging. This technique …   Wikipedia

  • Relaxation (physics) — In the physical sciences, relaxation usually means the return of a perturbed system into equilibrium. Each relaxation process can be characterized by a relaxation time τ. The simplest theoretical description of relaxation as function of time t is …   Wikipedia

Книги