|
Magnetic
Resonance -
Technology
Information
Portal |
Welcome to MRI Technology • |
|
|
 | Info
Sheets |
| | | | | | | | | | | | | | | | | | | | | | | | |
 | Out-
side |
| | | | |
|
| | | | | |
| Result: Searchterm 'Proton'
found in 19 messages |
| Result Pages: [1] 2 3 4 |
More Results:  Database (94) News Service (6) Resources (7) |
|
|
Brenna Bray
Tue. 10 Mar.20,
15:59
[Start of:
'Proton excitation from B0 to B1'
0 Reply]
 Category:
General
|
| Proton excitation from B0 to B1 |
I'm new to MRI imaging and currently taking an introductory course online. I understand that the introduction of a small magnetic field/RF pulses on top of the static magnetic field (B0) excites protons into a high energy state (B1). Does this mean that the protons are excited from a spin that is parallel to the longitudinal B0 plane to one that is antiparallel to the longitudinal B0 plane, or that the proton spin is excited from one that is aligned/polarized with B0 to one that is either parallel or antiparallel to B0 in the B1/xy plane?
|
| |  Reply to this thread
(login or register first) | |
Jacquelyn Chiffons
Thu. 18 Mar.10,
14:51
[Start of:
'Proton Density Imaging'
1 Reply]
Category:
Sequences and Imaging Parameters
|
| Proton Density Imaging |
Is Proton Density Imaging considered Fast Spin Echo?
|
| | View the whole thread | Reply to this thread
(login or register first) | | |
|
Anne Nelson
Tue. 8 May.07,
02:09
[Start of:
'Proton Density and FOV'
2 Replies]
Category:
Sequences and Imaging Parameters
|
| Proton Density and FOV |
I've been told that proton density sequences don't work well with a large field of view. (approx 350-400) Is this the case, and why?
Thanks in advance,
Annika
|
| | View the whole thread | Reply to this thread
(login or register first) | |
Gina Key
Sat. 27 Jan.24,
09:33
[Reply (1 of 2) to:
'IDEAL sequence help'
started by: 'gianluca turcatel'
on Mon. 10 Jan.22]
Category:
General
|
| IDEAL sequence help |
To calculate the Proton Density Fat Fraction (PDFF) from MRI images of the liver acquired using LMS IDEAL (Iterative Decomposition of Water and Fat with Echo Asymmetry and Least Squares Estimation) with optimized low flip angles, you'll typically have multiple image sets corresponding to different echoes. The fat and water signals are separated based on their chemical shift differences. Look for image sets labeled as Water, Fat, or PDFF (Proton Density Fat Fraction). Depending on the software or DICOM tags used, the images may be explicitly labeled, or you may need to review the sequence parameters to determine which set corresponds to fat or water.
|
| | View the whole thread | | |
Imran Chunawala
Sun. 14 Jul.19,
04:14
[Start of:
'MRI-PDFF'
1 Reply]
Category:
General
|
| MRI-PDFF |
I'm a research nurse conducting a clinical research study for Non Alcoholic Steatohepatosis in which an MRI-PDFF (Proton Density Fat Fraction) is required for study participants. How is this MRI different from a regular MRI? I have called multiple MRI locations in the area and no one seems to even know the existence of such a specialized MRI.
Internet research has led me to understanding that a specialized software is needed to calculate the PDFF from the MRI images but I'm not sure how that works.
If anyone has experience with conducting such an MRI or can point me in the right direction, I would be grateful.
|
| | View the whole thread | Reply to this thread
(login or register first) |
| |
| | Result Pages : [1] 2 3 4 | |
|
| |
 | Look
Ups |
| |
|
MR-TIP.com uses cookies! By browsing MR-TIP.com, you agree to our use of cookies. | | | [last update: 2024-02-26 03:41:00] |
|
|
bottom
top
