MRI of bone marrow: opposed-phase gradient-echo sequences with long repetition time

1999 ◽  
Vol 9 (4) ◽  
pp. 652-661 ◽  
Author(s):  
M. Seiderer ◽  
A. Staebler ◽  
H. Wagner
Keyword(s):  
Bone Marrow ◽  
Gradient Echo ◽  
Phase Gradient ◽  
Repetition Time

Hematopoietic bone marrow in the adult knee: spin-echo and opposed-phase gradient-echo MR imaging

1993 ◽  
Vol 22 (2) ◽  
Author(s):  
Ph. Lang ◽  
R. Fritz ◽  
S. Majumdar ◽  
M. Vahlensieck ◽  
C. Peterfy ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Mr Imaging ◽  
Spin Echo ◽  
Gradient Echo ◽  
Phase Gradient ◽  
Hematopoietic Bone Marrow

Characterization of Adrenal Lesions With 1.5-T MRI: Preliminary Observations on Comparison of Three In-Phase and Out-of-Phase Gradient-Echo Techniques

2011 ◽  
Vol 197 (2) ◽  
pp. 415-423 ◽  
Author(s):  
Miguel Ramalho ◽  
Rafael O. P. de Campos ◽  
Vasco Heredia ◽  
Brian M. Dale ◽  
Penampai Tannaphai ◽  
...  
Keyword(s):  
Gradient Echo ◽  
Phase Gradient

Focal Sparing in Fatty Liver: Mimicking Hypervascular Tumor on Gadolinium-Enhanced Opposed-Phase Gradient-Echo Images

2001 ◽  
Vol 45 (6) ◽  
pp. 611
Author(s):  
Dal Mo Yang ◽  
Hak Soo Kim ◽  
Hyung Sik Kim ◽  
Wook Jin ◽  
Seung Whi Cho
Keyword(s):  
Fatty Liver ◽  
Gradient Echo ◽  
Phase Gradient ◽  
Hypervascular Tumor

MR Imaging of Bone Metastases and Choice of Sequence: Spin Echo, In-Phase Gradient Echo, Diffusion, and Contrast Medium

2009 ◽  
Vol 13 (02) ◽  
pp. 097-103 ◽  
Author(s):  
Daniel Vanel ◽  
Roberto Casadei ◽  
Marco Alberghini ◽  
Manel Razgallah ◽  
Maurizio Busacca ◽  
...  
Keyword(s):  
Mr Imaging ◽  
Bone Metastases ◽  
Contrast Medium ◽  
Spin Echo ◽  
Gradient Echo ◽  
Phase Gradient

A method for assessing metabolic information on liver and bone marrow by use of double gradient-echo with spectral fat suppression

2014 ◽  
Vol 7 (2) ◽  
pp. 211-216 ◽  
Author(s):  
Harumasa Kasai ◽  
Tosiaki Miyati ◽  
Tatsuya Kawai ◽  
Hirohito Kan ◽  
Makoto Kawano ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Fat Suppression ◽  
Gradient Echo ◽  
Metabolic Information

scholarly journals Volumetrijska analiza sive mase, bele mase i prostora cerebrospinalne tecnosti u shizofreniji

2003 ◽  
Vol 131 (1-2) ◽  
pp. 26-30 ◽  
Author(s):  
Nadja Maric ◽  
Thomas Kamer ◽  
Thomas Schneider-Axmann ◽  
Dani Indra ◽  
Miroslava Jasovic-Gasic ◽  
...  
Keyword(s):  
Young Adults ◽  
Adult Population ◽  
Structural Features ◽  
Flip Angle ◽  
Age Difference ◽  
Gradient Echo ◽  
Data Set ◽  
Recent Onset ◽  
Repetition Time ◽  
Echo Time

Schizophrenia is characterized by diffuse brain abnormalities, some of them involving volumes of three intracranial compartments: gray matter (GM) white matter (WM) and cerebrospinal fluid (CSF). Novel methods, such as Statistical Parametrical Mapping, provide an automated means of comparing structural features across high quality MRI scans and the measurement based on the principles of voxel based morphometry. For the purposes of the present study, we selected sex balanced group of young adults with recent onset illness to assess the effects of the illness on the volumes of compartments and also to minimize the effects of chronicity, medication, sex and aging. Sixty-four subjects were selected from a larger sample (inclusion criteria: age range 18-31). Thirty-one had DSM IV diagnosis of schizophrenia or schizoaffective disorder, 33 were controls. T1 weighted MRI images were acquired on two scanners (1.5T both): a) fast gradient echo sequence, FLASH, 40msec repetition time, 5ms echo time, 40 degree flip angle and b) turbo gradient echo, 12msec repetition time, 4msec echo time, 20 degree flip angle, 1 excitation). The resulting data set consisted of: a) 128 consecutive slices with 1.17mm thickness and 256x256 pixels per slice and b) 160 consecutive slices of 1mm thickness and 256x256 pixels per slice. All 64 images were processed by ANALZYE, and normalized and segmented by SPM99. Following the automatic segmentation of the images into the three intracranial compartments, volumetry was performed based on the principles of voxel analysis. Results were expressed relative to whole brain volume and MANOVA analyses were performed to correct the confounding effects of MRI acquisition center differences and age difference between diagnostic groups. Young adults with recent onset schizophrenia had 6% reduction in GM volume and 14% increase in the volume of CSF, after all confounders were included into analyses (MANCOVA: p=0.006 and 0.0002, respectively). No significant changes in WM volume were evident. In comparison to a few similar studies published recently, all results yielded similar scores regarding effects of recent onset illness and young adult population, thus confirming the reliability of the procedure. In conclusion, global neuropil reduction was discussed as a consequence of the cortical neurodevelopmental disgenesis. It was suggested that neuropil reduction i.e. synaptic and dendritic changes were to induce functional abnormalities and the expression of schizophrenia.

Lipid in renal clear cell carcinoma: detection on opposed-phase gradient-echo MR images.

Radiology ◽  
1997 ◽  
Vol 205 (1) ◽  
pp. 103-107 ◽  
Author(s):  
E K Outwater ◽  
M Bhatia ◽  
E S Siegelman ◽  
M A Burke ◽  
D G Mitchell
Keyword(s):  
Cell Carcinoma ◽  
Clear Cell ◽  
Clear Cell Carcinoma ◽  
Renal Clear Cell Carcinoma ◽  
Gradient Echo ◽  
Mr Images ◽  
Phase Gradient
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