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?
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
Listed below are some international and national (esp. UK and Australasia) MR safety standards and professional guidance documents. 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 professional guidance. 2019 Updates and Critical Information. Journal … More MRI Safety Standards and Guidance
A big thank you to the 3000 plus visitors to my site in its first year. Thanks also to everyone I met during the various courses in the year, and to the organisers: Eden Learning, Siemens UK, Siemens ANZ and Canon ANZ. Also to Ashford Cancer Centre, the Australian MR-Linac Project and the ACPSEM with … More 2108 – thank you
MR signal and contrast calculator (SE) The MR signal and contrast calculator 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 contrast calculator … More MR signal and contrast calculators