Phase Image Correction for Magnetic Resonance Chemical Shift Imaging

1991 ◽  
pp. 46-51
Author(s):  
E. A. Castrén ◽  
J. A. Pohjonen
Keyword(s):  
Magnetic Resonance ◽  
Chemical Shift ◽  
Chemical Shift Imaging ◽  
Phase Image ◽  
Image Correction

scholarly journals Chemical shift magnetic resonance imaging in differentiation of benign from malignant vertebral collapse in a rural tertiary care hospital in North India

2016 ◽  
Vol 7 (04) ◽  
pp. 489-492 ◽  
Author(s):  
Puneet Mittal ◽  
Ranjana Gupta ◽  
Amit Mittal ◽  
Sandeep Joshi
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Chemical Shift ◽  
Signal Intensity ◽  
Chemical Shift Imaging ◽  
Care Hospital ◽  
Resonance Imaging ◽  
Vertebral Collapse ◽  
Phase Images ◽  
Phase Out

ABSTRACT Introduction: Magnetic resonance imaging (MRI) is the modality of the first choice for evaluation of vertebral compression/collapse. Many MRI qualitative features help to differentiate benign from malignant collapse. We conducted this study to look for a quantitative difference in chemical shift values in benign and malignant collapse using dual-echo gradient echo in-phase/out-phase imaging. Materials and Methods: MRI examinations of a total of 38 patients were retrospectively included in the study who had vertebral compression/collapse with marrow edema in which final diagnosis was available at the time of imaging/follow-up. Signal intensity value in the region of abnormal marrow signal and adjacent normal vertebra was measured on in phase/out phase images. Signal intensity ratio (SIR) was measured by dividing signal intensity value on opposite phase images to that on in phase images. SIR was compared in normal vertebrae and benign and malignant vertebral collapse. Results: There were 21 males and 17 females with mean age of 52.4 years (range 28–76 years). Out of total 38 patients, 18 were of benign vertebral collapse and 20 of malignant vertebral collapse. SIR in normal vertebrae was 0.30 ± 0.14, 0.67 ± 0.18 in benign vertebral collapse, and 1.20 ± 0.27 in malignant vertebral collapse with significant difference in SIR of normal vertebrae versus benign collapse (P < 0.01) and in benign collapse versus malignant collapse (P < 0.01). Assuming a cutoff of <0.95 for benign collapse and ≥0.95 for malignant collapse, chemical shift imaging had a sensitivity of 90% and specificity of 94.4%. Conclusion: Chemical shift imaging is a rapid and useful sequence in differentiating benign from malignant vertebral collapse with good specificity and sensitivity.

Proton Magnetic Resonance Chemical Shift Imaging ( 1 H CSI)-Directed Stereotactic Biopsy

2001 ◽  
Vol 143 (1) ◽  
pp. 45-50 ◽  
Author(s):  
B.-C. Son ◽  
M.-C. Kim ◽  
B.-G. Choi ◽  
E.-N. Kim ◽  
H.-M. Baik ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Chemical Shift ◽  
Proton Magnetic Resonance ◽  
Stereotactic Biopsy ◽  
Chemical Shift Imaging

Phase contrast in magnetic resonance imaging perspectives for chemical shift imaging

1986 ◽  
Vol 4 (5) ◽  
pp. 431-433
Author(s):  
André Briguet ◽  
Jean Chankji ◽  
Gilles Desorbay ◽  
Danielle Graveron-Demilly ◽  
Emile Hiltbrand
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Chemical Shift ◽  
Phase Contrast ◽  
Chemical Shift Imaging ◽  
Resonance Imaging

In vivo 7Li nuclear magnetic resonance study of lithium pharmacokinetics and chemical shift imaging in psychiatric patients

1993 ◽  
Vol 50 (2) ◽  
pp. 67-76 ◽  
Author(s):  
Richard A. Komoroski ◽  
Joseph E.O. Newton ◽  
Jay R. Sprigg ◽  
David Cardwell ◽  
Parekkat Mohanakrishnan ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Chemical Shift ◽  
Psychiatric Patients ◽  
Chemical Shift Imaging ◽  
Nuclear Magnetic Resonance Study ◽  
Magnetic Resonance Study ◽  
Nuclear Magnetic

Phosphorus-31 magnetic resonance spectroscopy of the human liver using chemical shift imaging techniques

1992 ◽  
Vol 14 (2-3) ◽  
pp. 265-275 ◽  
Author(s):  
I.Jane Cox ◽  
David K. Menon ◽  
Janet Sargentoni ◽  
David J. Bryant ◽  
Alan G. Collins ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Chemical Shift ◽  
Magnetic Resonance Spectroscopy ◽  
Human Liver ◽  
Imaging Techniques ◽  
Chemical Shift Imaging ◽  
Resonance Spectroscopy
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