nuclear magnetic resonance

Precession on a gyroscope. Note that the angular momentum vector is pointing starting at the top point towards the fixed point (also applies to the gimbal).

Precession on

a gyroscope. Note that the angular momentum vector is pointing starting at the top point towards the fixed point (also applies to the gimbal).

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MRI • Normal midline brain (MRI) - Ganzer Fall bei Radiopaedia

MRI •

Normal midline brain (MRI) - Ganzer Fall bei Radiopaedia

Gaillard, F. Normal midline brain (MRI). Case study, Radiopaedia.org. (accessed on 01 Nov 2022) https://doi.org/10.53347/rID-2756 • CC by-nc-sa 3.0 (modified)

Differential diagnosis of uncommon prostate diseases: combining mpMRI and clinical information. BPH in a 66-year-old man with an elevated serum PSA level fluctuating from 4 to 10 ng/mL. a–g Axial T2-weighted images captured in Jan 2010 (size of 1.3 cm), May 2012, Mar 2013, Dec 2013, Feb 2015, May 2015, and Jul 2019 (size of 2.6 cm) show a gradually increasing nodule with heterogeneous hyperintensity and a well-defined capsule in the left peripheral zone (arrow), the size of which increases with the progress of BPH in the TZ (☆)

Differential

diagnosis of uncommon prostate diseases: combining mpMRI and clinical information. BPH in a 66-year-old man with an elevated serum PSA level fluctuating from 4 to 10 ng/mL. a–g Axial T2-weighted images captured in Jan 2010 (size of 1.3 cm), May 2012, Mar 2013, Dec 2013, Feb 2015, May 2015, and Jul 2019 (size of 2.6 cm) show a gradually increasing nodule with heterogeneous hyperintensity and a well-defined capsule in the left peripheral zone (arrow), the size of which increases with the progress of BPH in the TZ (☆)

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siehe auch

zipper artifact
MR Pulse Sequenzen - Abkürzungen
MR spectroscopy
Suszeptibilitätsartefakt
black boundary artifact
chemical shift artifact
Einfaltungsartefakte
zebra stripes
MRT Sequenzen
Gradientenechosequenz
spin echo sequences
Gibbs-Artefakte
Artefakte in der Magnetresonanztomographie
diffusionsgewichtete Bildgebung
gastrointestinal MRI contrast agents
entry slice phenomenon
magic angle effect
relaxation
1,5 Tesla versus 3 Tesla
ferromagnetism
Time-of-Flight-MRA
moire fringes
precession
Funktionelle Magnetresonanztomographie
Signal-Rausch-Verhältnis
fat suppressed imaging sequences
slice-overlap artifact
MRT Sicherheit
phase contrast imaging
t2* relaxation
central point artifact
T2 relaxation
paramagnetism
K-space
acquisition time
trade offs
saturation recovery sequences
reticuloendothelial MRI contrast agents
intravascular (blood pool) MRI contrast agents
magnetism
hepatobiliary MRI contrast agents
diamagnetism
zero-fill artifact
superparamagnetism
intravenous MRI contrast agents
magnets
aliasing
Fourier transformation
cross excitation
MR safety
T1 relaxation
tumor-specific MRI contrast agents
resonance and radiofrequency (RF)
RF overflow artifacts
IR - inversion recovery
diastolic pseudogating
MR contrast agents
resolution
electronics and data processing
Ortskodierung
vascular sequences (MRA / MRV)
radiofrequency and gradient coils

Nuclear magnetic resonance (NMR) is a powerful technique which allows the study of the magnetic properties of an atom's nucleus . It involves placing nuclei within an external magnetic field enabling thus them to undergo precession . The 'resonance' part of the names implies the fact that a second (usually perpendicular) radiofrequency pulse tuned to the precessional frequency of target nuclei allows them to absorb and then emit electromagnetic energy .

Nuclear magnetic resonance is exploited in a number disciplines and fields, including magnetic resonance imaging, molecular physics and chemistry. An offshoot of this technique, nuclear magnetic resonance spectroscopy allows precise analysis of molecular constitution of a chemical microenvironment .