Myths and maths in MR safety 2
November 26, 2021
In MRI we have been using the wrong terminology for magnetic fields for decades. Does this matter? Find out here. … More Myths and maths in MR safety 2
Tag: MR education
Signal, contrast & CNR calculator SE app
September 30, 2021
MR signal, contrast and contrast-to-noise (CNR) calculaotr app. #MRI #MR physics #MReducation … More Signal, contrast & CNR calculator SE app
ACPSEM MR Safety Expert Certification
August 25, 2020
In an earlier blog post I raised the issue of the need for professional and academic prerequisites for certification as a MR Safety Expert. Now the Australasian College of Physical Scientists and Engineers in Medicine (ACPSEM), the professional body responsible for the training, scope of practice, professional conduct, qualifications, and continuing education of medical physicists … More ACPSEM MR Safety Expert Certification
Gradient echo signal and contrast
December 21, 2018
Gradient echo (GE, GRE, FLASH, SPGR, T1-FFE, FE) is one of the hardest elements of MRI to understand. Image signal and contrast in spoiled gradient echo depends upon three user-selected parameters: For any given tissue T1 and scanner TR there is a flip angle, the Ernst angle, that gives the maximum signal for that tissue. … More Gradient echo signal and contrast
Gradient echo signal and contrast calculator
November 24, 2018
First choose tissue T1 and T2 values.Then select your scanning TR, TE and flip angle. You can also set a field inhomogeneity factor. The calculator uses an estimated value of T2* based upon this and the tissue T2.The graph shows the signal intensity (max = 1) for both tissues, the contrast and the relative contrast … More Gradient echo signal and contrast calculator