Multibanded Anterior Talofibular Ligaments in Normal Ankles and Sprained Ankles Using 3D Isotropic Proton Density–Weighted Fast Spin-Echo MRI Sequence

Background: The prevalence of spinal cord lesions is high in multiple sclerosis particularly in the cervical cord, and their detection can assist in both the diagnosis and follow-up of the patients. For spinal multiple sclerosis, MRI is considered the first line investigation. Objective: To evaluate the value of sagittal 1.5 Tesla proton density-fast spin echo (PD-FSE) MRI in the detecting and increasing conspicuity of multiple sclerosis lesions in cervical cord in comparison with sagittal T2 fast spin-echo (T2-FSE) MRI. Patients and Methods: A cross sectional study carried out from 3rd of January 2017 to 1st of January 2018 in the MRI department of Al-Imamein Al-Kadhimein Medical City, and included 60 selected patients with a known diagnosis of multiple sclerosis. All patients were examined with 1.5 T sagittal PD-FSE, T2-FSE and axial gradient recalled-echo (GRE) MRI. Results: Sixty patients with cervical multiple sclerosis were enrolled in the study, 146 (100%) lesions were detected by PD-FSE imaging, while T2 detected 105 (71.9%), 41 more lesions (28%) were detected by PD-FSE imaging, (P-value <0.001). All extra lesions were confirmed on axial imaging. In 13 patients (21.6%) one lesion or more had been detected on sagittal PD-FSE imaging while on sagittal T2-FSE imaging, no lesion were detected. On PD-FSE imaging, 17 long lesions were detected in 16 patients (26.7%) while 7 long lesions in 7 patients (11.7%) were detected by T2-FSE imaging. So, in 9 patients (16.7%) 10 lesions were detected as long in PD-FSE while short lesion in T2– FSE, the detection of long lesions by PD-FSE was significantly higher than in T2– FSE (100% vs 71.9% with p- value of 0.002). The mean lesion contrast to cord ratio was significantly higher in PD-FSE as compared to T2-FSE (PD-FSE, 79±2.0, against T2-FSE, 61± 2.6; P-value <0.001). Conclusion: Sagittal proton density was more efficient and more accurate in the detection of cervical cord lesions than sagittal T2-FSE sequence, when used in conjunction with sagittal T2-FSE; it can raise the diagnostic assurance via improving the visualization of the lesions.

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Practical choices of fast spin echo pulse sequence parameters: clinically useful proton density and T2-weighted contrasts

Neuroradiology ◽

10.1007/bf00588276 ◽

1992 ◽

Vol 35 (1) ◽

pp. 38-41 ◽

Cited By ~ 24

Author(s):

R. D. Tien ◽

G. J. Felsberg ◽

J. MacFall

Keyword(s):

Pulse Sequence ◽

Spin Echo ◽

Fast Spin Echo ◽

Proton Density ◽

Sequence Parameters ◽

Echo Pulse ◽

Fast Spin

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Detection of multiple sclerosis lesions in the cervical cord: which of the MAGNIMS ‘mandatory’ non-gadolinium enhanced sagittal sequences is optimal at 3T?

The Neuroradiology Journal ◽

10.1177/19714009211017787 ◽

2021 ◽

pp. 197140092110177

Author(s):

Chian A Chang ◽

Abigail L Chong ◽

Ronil V Chandra ◽

Ernest Butler ◽

Deepa Rajendran ◽

...

Keyword(s):

Magnetic Resonance Imaging ◽

Multiple Sclerosis ◽

Magnetic Resonance ◽

Spin Echo ◽

Inversion Recovery ◽

Fast Spin Echo ◽

Proton Density ◽

Resonance Imaging ◽

Short Tau Inversion Recovery ◽

Fast Spin

Background and purpose The magnetic resonance imaging in multiple sclerosis consensus guidelines currently mandate three sagittal non-contrast enhanced sequences of T2-weighted fast spin echo, proton density-weighted fast spin echo and short tau inversion recovery; however, these particular three sequences have not previously been compared at 3T. This study compared T2-weighted fast spin echo, proton density-weighted fast spin echo, short tau inversion recovery as well as the double inversion recovery sequence for the sagittal detection of multiple sclerosis lesions in the cervical spinal cord at 3T. Methods Nineteen multiple sclerosis patients underwent magnetic resonance imaging with 3T sagittal T2-weighted fast spin echo, proton density-weighted fast spin echo, short tau inversion recovery and double inversion recovery between November 2012 and April 2013. Two neuroradiologists independently reviewed the images, and the number of lesions detected on each sequence was recorded. Lesion conspicuity was quantitatively assessed with the lesion-to-cord-contrast ratio and lesion contrast-to-noise ratio. The Wilcoxon signed rank test was performed for statistical analysis. Results Proton density-weighted fast spin echo and short tau inversion recovery detected 32% more lesions compared to T2-weighted fast spin echo, and 37% more lesions compared to double inversion recovery. The lesion-to-cord-contrast ratio was highest in short tau inversion recovery, while the lesion contrast-to-noise ratio was highest for proton density-weighted fast spin echo. Conclusions This study provides the necessary evidentiary support at 3T for the magnetic resonance imaging in multiple sclerosis spinal magnetic resonance imaging protocol consensus guidelines. At 3T sagittal proton density-weighted fast spin echo and short tau inversion recovery sequences allowed improved detection of cervical spinal cord multiple sclerosis lesions, compared to T2-weighted fast spin echo and three-dimensional double inversion recovery magnetic resonance imaging. Utilising T2-weighted fast spin echo alone at 3T is insufficient for lesion detection.

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MRI of the anatomical structures of the knee: the proton density-weighted fast spin-echo sequencevsthe proton density-weighted fast-recovery fast spin-echo sequence

British Journal of Radiology ◽

10.1259/bjr/99570113 ◽

2012 ◽

Vol 85 (1017) ◽

pp. e686-e693 ◽

Cited By ~ 4

Author(s):

O Tokuda ◽

Y Harada ◽

G Shiraishi ◽

T Motomura ◽

K Fukuda ◽

...

Keyword(s):

Spin Echo ◽

Fast Spin Echo ◽

Proton Density ◽

Fast Recovery ◽

Anatomical Structures ◽

Spin Echo Sequence ◽

Fast Spin Echo Sequence ◽

Fast Spin

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Forensic age estimation based on fast spin-echo proton density (FSE PD)–weighted MRI of the distal radial epiphysis

International Journal of Legal Medicine ◽

10.1007/s00414-021-02505-2 ◽

2021 ◽

Author(s):

Oguzhan Ekizoglu ◽

Ali Er ◽

Mustafa Bozdag ◽

Negahnaz Moghaddam ◽

Silke Grabherr

Keyword(s):

Radiation Exposure ◽

Distal Radius ◽

Age Estimation ◽

Spin Echo ◽

Interobserver Reliability ◽

Forensic Age Estimation ◽

Fast Spin Echo ◽

Proton Density ◽

Mri Findings ◽

Fast Spin

AbstractRadiation exposure is a crucial factor to consider in forensic age estimation. The various magnetic resonance imaging (MRI) modalities used in forensic age estimation avoid radiation exposure. This study examined the reliability of distal radius ossification using fast spin-echo proton density (FSE PD)–weighted MRI to estimate age. Left wrist MRI findings of 532 patients aged 10–29 years were evaluated retrospectively using the five-stage system of Dedouit et al. The intra- and interobserver reliability values were κ = 0.906 and 0.869, respectively. Based on the results, the respective minimum ages estimated for stages 4 and 5 were 13.4 and 16.1 years for females, and 15.1 and 17.3 years for males; the method could not estimate an age of 18 years in any case. FSE PD MRI analysis of the distal radius epiphysis provides supportive data and can be used when evaluating the distal radius for forensic age estimation.

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