Power deposition in wholeÃ¢â‚¬Â�body NMR imaging

Paul A. Bottomley; William A. Edelstein

doi:10.1118/1.595000

Power deposition in wholeÃ¢â‚¬Â�body NMR imaging

Paul A. Bottomley, William A. Edelstein

Research output: Contribution to journal › Letter › peer-review

104 Scopus citations

Abstract

The surface radio frequency (rf) power absorption in human head and torso nuclear magnetic resonance (NMR) imaging experiments is estimated. The results are expressed as a function of the NMR frequency, the rf pulse length, and the pulse duty cycle, which are varied over six orders of magnitude for general applicability. The results are compared with average metabolic levels and the limits advised by the National Radiological Protection Broad of the United Kingdom. Heating due to timeÃ¢â‚¬Â�dependent magnetic field gradients is discussed.

Original language	English (US)
Pages (from-to)	510-512
Number of pages	3
Journal	Medical physics
Volume	8
Issue number	4
DOIs	https://doi.org/10.1118/1.595000
State	Published - Jul 1981
Externally published	Yes

Keywords

ANIMAL CELLS
HEATING
IMAGES
MAGNETIC FIELDS
NUCLEAR MAGNETIC RESONANCE
POWER
RADIATION PROTECTION
RF SYSTEMS

ASJC Scopus subject areas

Biophysics
Radiology Nuclear Medicine and imaging

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10.1118/1.595000

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title = "Power deposition in whole{\~A}¢{\^a}‚¬{\^A}�body NMR imaging",

abstract = "The surface radio frequency (rf) power absorption in human head and torso nuclear magnetic resonance (NMR) imaging experiments is estimated. The results are expressed as a function of the NMR frequency, the rf pulse length, and the pulse duty cycle, which are varied over six orders of magnitude for general applicability. The results are compared with average metabolic levels and the limits advised by the National Radiological Protection Broad of the United Kingdom. Heating due to time{\~A}¢{\^a}‚¬{\^A}�dependent magnetic field gradients is discussed.",

keywords = "ANIMAL CELLS, HEATING, IMAGES, MAGNETIC FIELDS, NUCLEAR MAGNETIC RESONANCE, POWER, RADIATION PROTECTION, RF SYSTEMS",

author = "Bottomley, {Paul A.} and Edelstein, {William A.}",

year = "1981",

month = jul,

doi = "10.1118/1.595000",

language = "English (US)",

volume = "8",

pages = "510--512",

journal = "Medical physics",

issn = "0094-2405",

publisher = "AAPM - American Association of Physicists in Medicine",

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TY - JOUR

T1 - Power deposition in wholeÃ¢â‚¬Â�body NMR imaging

AU - Bottomley, Paul A.

AU - Edelstein, William A.

PY - 1981/7

Y1 - 1981/7

N2 - The surface radio frequency (rf) power absorption in human head and torso nuclear magnetic resonance (NMR) imaging experiments is estimated. The results are expressed as a function of the NMR frequency, the rf pulse length, and the pulse duty cycle, which are varied over six orders of magnitude for general applicability. The results are compared with average metabolic levels and the limits advised by the National Radiological Protection Broad of the United Kingdom. Heating due to timeÃ¢â‚¬Â�dependent magnetic field gradients is discussed.

AB - The surface radio frequency (rf) power absorption in human head and torso nuclear magnetic resonance (NMR) imaging experiments is estimated. The results are expressed as a function of the NMR frequency, the rf pulse length, and the pulse duty cycle, which are varied over six orders of magnitude for general applicability. The results are compared with average metabolic levels and the limits advised by the National Radiological Protection Broad of the United Kingdom. Heating due to timeÃ¢â‚¬Â�dependent magnetic field gradients is discussed.

KW - ANIMAL CELLS

KW - HEATING

KW - IMAGES

KW - MAGNETIC FIELDS

KW - NUCLEAR MAGNETIC RESONANCE

KW - POWER

KW - RADIATION PROTECTION

KW - RF SYSTEMS

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U2 - 10.1118/1.595000

DO - 10.1118/1.595000

M3 - Letter

C2 - 7322070

AN - SCOPUS:0019500828

SN - 0094-2405

VL - 8

SP - 510

EP - 512

JO - Medical physics

JF - Medical physics

IS - 4

ER -

Power deposition in wholeÃ¢â‚¬Â�body NMR imaging

Abstract

Keywords

ASJC Scopus subject areas

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