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Chapter 3
MR personnel and patient exposure to the RF magnetic field
Heating is a major consequence of exposure to the RF frequencies used in
M.R. Many biological effects of acute exposure to radio frequency are
consistent with responses to induced heating that results from rises in
tissue or body temperature of about 1° or more, or with responses for
minimizing the total heat load.
Patient
The SAR can be directly compared with the heat that is induced by the
radio frequency.
MR personnel
The maximum transmission of the RF magnetic field in the isocenter of the
magnet is
B
1
2
(0)
equal to 22.08 µT.
The maximum transmission of the RF magnetic field in the
accessible/relevant positions for MR personnel during examination are
shown in the graph of
B
1
2
normalized with respect to its value at the
isocenter.
C a u t i o n
The supervising physician must carefully monitor the patient
examined in the following environmental conditions of the
examination room: temperature of over 24 °C and relative humidity
greater than 60%.
Summary of Contents for O-scan eXP
Page 1: ......
Page 2: ......
Page 3: ...O scan User Manual 350004900 Rev 07 Esaote S p A Genoa...
Page 9: ...350004900 Rev 07 7 10...
Page 10: ...8 10...
Page 12: ...10 10...
Page 20: ...8 8...
Page 32: ...8 8 Chapter 2...
Page 51: ...350004900 Rev 07 19 48 Instructions for Safe Use fig 3 1 Top view...
Page 52: ...20 48 Chapter 3 fig 3 2 Side view...
Page 80: ...48 48 Chapter 3...
Page 102: ...22 22 Chapter 4...
Page 105: ...350004900 Rev 07 3 20 Technical Description fig 5 1 Equipment components...
Page 122: ...20 20 Chapter 5...
Page 142: ...20 20 Chapter 6...
Page 161: ...350004900 Rev 07 5 10 Soft cushion Set fig 9 6 Use of lumbar support cushion...
Page 184: ...10 10 Chapter 11...
Page 232: ...4 4 Chapter 17...
Page 236: ...4 4 Chapter 18...