New ICNIRP guidelines for RF exposure
July 14, 2020
New RF exposure guidelines have been published by ICNIRP. What do they mean for MRI? … More New ICNIRP guidelines for RF exposure
Tag: MRI
Are cochlear implants MR conditional?
January 15, 2020
The presence of a cochlear implant (CI) used to be an absolute contraindication for MRI unless the internal magnet was surgically removed prior to scanning. More recently implant manufacturers produced devices labelled as MR conditional. The main complications in MRI arise from the magnetic force and torque on the internal magnet from B0. To address … More Are cochlear implants MR conditional?
History of MR in the UK
December 9, 2019
A fascinating ebook/website has been compiled by Graeme Bydder and Martyn Paley outlining the history of the development of MR imaging and spectroscopy in the UK. There are personal accounts from some of the pioneers including the late Ian Young and Bill Edelstein and many others. There are also obituaries for international researchers including Nobel … More History of MR in the UK
MRI Safety Standards and Guidance
October 16, 2019
Listed below are some international and national (esp. UK and Australasia) MR safety standards and professional guidance documents. Reproduced from Essentials of MRI Safety. They are listed alphabetically. ACR Guidance Document on MR Safe Practices: 2013, American College of Radiology Expert panel on MR Safety Kanal et al. Magn. Reson. Imag. 37:501-530. Link: https://www.acr.org/Clinical-Resources/Radiology-Safety/MR-Safety Status: US-based … More MRI Safety Standards and Guidance
MR signal and contrast calculators
December 29, 2018
MR signal and contrast calculator (SE) The MR signal and contrast calculator or app lets you choose two tissue T1 and T2 whilst manipulating the scanner parameters: TR and TE to show the signal, contrast and relative contrast to noise ratio (CNR). Use the calculator to explore the weightings below. MR gradient echo signal and … More MR signal and contrast calculators