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 ◽  
...  
2009 ◽  
Vol 13 (02) ◽  
pp. 097-103 ◽  
Author(s):  
Daniel Vanel ◽  
Roberto Casadei ◽  
Marco Alberghini ◽  
Manel Razgallah ◽  
Maurizio Busacca ◽  
...  

Radiology ◽  
2005 ◽  
Vol 237 (2) ◽  
pp. 507-511 ◽  
Author(s):  
Aliya Qayyum ◽  
Jeffrey S. Goh ◽  
Sanjay Kakar ◽  
Benjamin M. Yeh ◽  
Raphael B. Merriman ◽  
...  

2002 ◽  
Vol 43 (5) ◽  
pp. 464-473
Author(s):  
M. Alemany Ripoll ◽  
R. Raininko

Purpose: To compare the detectability of small experimental intracranial haemorrhages on MR imaging at 0.5 T and 1.5 T, from hyperacute to subacute stages. Material and Methods: 1 ml of autologous blood was injected into the brain of 15 rabbits to create intraparenchymal haematomas. Since the blood partially escaped into the cerebrospinal fluid (CSF) spaces, detectability of subarachnoid and intraventricular blood was also evaluated. MR imaging at 0.5 T and at 1.5 T was repeated up to 14 days, including T1-, proton density- and T2-weighted (w) spin-echo (SE), FLAIR and T2*-w gradient echo (GE) pulse sequences. The last MR investigation was compared to the formalin-fixed brain sections in 7 animals. Results: The intraparenchymal haematomas were best revealed with T2*-w GE sequences, with 100% of sensitivity at 1.5 T and 90–95% at 0.5 T. Blood in the CSF spaces was significantly ( p < 0.05) better detected at 1.5 T with T2*-w GE sequences and detected best during the first 2 days. The next most sensitive sequence for intracranial blood was FLAIR. SE sequences were rather insensitive. Conclusion: 1.5 T equipment is superior to 0.5 T in the detection of intracranial haemorrhages from acute to subacute stages. T2*-w GE sequences account for this result but other sequences are also needed for a complete examination.


1994 ◽  
Vol 23 (8) ◽  
pp. 607-610 ◽  
Author(s):  
M. Vahlensieck ◽  
Ph. Lang ◽  
K. Seelos ◽  
D. Yang-Ho Sze ◽  
S. Grampp ◽  
...  

Radiology ◽  
1989 ◽  
Vol 170 (3) ◽  
pp. 705-711 ◽  
Author(s):  
M J Carvlin ◽  
P H Arger ◽  
H L Kundel ◽  
L Axel ◽  
L Dougherty ◽  
...  

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