http://hdl.handle.net/1765/9969

Interventional MR imaging at 1.5 T: quantification of sound exposure


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Sound pressure levels (SPLs) during interventional magnetic resonance (MR) imaging may create an occupational hazard for the interventional radiologist (ie, the potential risk of hearing impairment). Therefore, A-weighted and linear continuous-equivalent SPLs were measured at the entrance of a 1.5-T MR imager during cardiovascular and real-time pulse sequences. The SPLs ranged from 81.5 to 99.3 dB (A-weighted scale), and frequencies were from 1 to 3 kHz. SPLs for the interventional radiologist exceeded a safe SPL of 80 dB (A-weighted scale) for all sequences; therefore, hearing protection is recommended.



Keywords


Automatically Extracted Terms
  • noise
  • imaging
  • interventional
  • sequence
  • exposure
  • measurement
  • hearing
  • sound
  • interventional mr imaging
  • frequency
  • noise exposure
  • level
  • gradient
  • magnet
  • repetition time
  • interventional radiologist
  • field
  • a-weighted scale
  • scale
  • radiology


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