Role of MRI CSF Flowmetry in Evaluation of Hydrocephalus in Pediatric Patients

Abdelhameed, Abeer Maghawry; Darweesh, Eman Ahmed Fouad; Bedair, Marwa Hosni

doi:10.12816/0039064

Cited by 3 publications

(2 citation statements)

References 8 publications

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“…In agreement with researchers (1) , among causes of hydrocephalus, aqueduct stenosis(AS) is the commonest that could be idiopathic or secondary to inflammatory pathologies, In different studies , it was found that 14 out of 25 patients (4) and 9 out of 20 patients (1) were AS while in this present study it was 11 out of 20 patients have AS.…”

Section: Discussionsupporting

confidence: 92%

Role of MRI CSF Flowmetry in Evaluation of Hydrocephalus in pediatric patients with Correlation between thin cuts T2, heavy T2 and Phase contrast.

Gamal

elsheikh²,

sameeh³

2022

Benha Medical Journal

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Background and Aim: flow-sensitive MRI techniques have been applied to quantitatively and qualitatively assess CSF flow dynamics to discriminate between communicating and noncommunicating hydrocephalus. So, we aimed to Correlate between thin cuts T2 ,3D-heavy T2 {CISS, sampling perfection with application-optimized contrasts using different flip angle evolutions (SPACE) with variable flip angle mode (VFAM) & constant angle} & phase contrast (PC) Sequences in pediatric hydrocephalus Patient & methods: 20 Patients with age below 18yrs old with evidence of hydrocephalic changes by clinical examination and by previous U/S,CT or MR scan with ventriculomegaly were included. 2D-T2-TSE, 3D-heavy T2 & PC-MRI were analyzed qualitatively by evaluating the capabilities of visualization of the obstructive pathology, overall image quality, severity of artifacts, and delineation of the CSF pathways. Results:showed that 3D heavily T2WI were superior to T2-TSE, 3D-SPACE showed fewer artifacts than 3D-CISS or T2-TSE sequences. 3D-SPACE VFAM is considered as a highly accurate alternative to PC-MRI for physiological and morphological evaluation of aqueductal patency compared to T2-TSE. Conclusion: 3D heavily T2 sequences are necessary for the assessment of CSF pathways in patients with hydrocephalus when compared with T2-TSE. 3D-SPACE VFAM is considered as a highly accurate alternative to PC-MRI for physiological and morphological evaluation of aqueductal patency.

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Section: Discussionsupporting

confidence: 92%

Role of MRI CSF Flowmetry in Evaluation of Hydrocephalus in pediatric patients with Correlation between thin cuts T2, heavy T2 and Phase contrast.

Gamal

elsheikh²,

sameeh³

2022

Benha Medical Journal

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“…is was evidenced by the reduced aqueductal flow on cine MR images and consistent with the studies by Lucic et al, Parkkola et al, and Abdelhameed et al, wherein reduced aqueductal flow was observed in patients with hydrocephalus as a result of aqueductal stenosis. [19][20][21] is further affirms the role of PCMRI in the differentiation of communicating and non-communicating hydrocephalus.…”

Section: Discussionmentioning

confidence: 56%

Magnetic Resonance Imaging Cerebrospinal Fluid Hydrodynamics in Patients with Meningitis

Lakhera¹,

Azad²,

Azad³

et al. 2020

JCIS

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Objective: The objective of the study was to evaluate the cerebrospinal fluid (CSF) flow alterations in meningitis using phase-contrast magnetic resonance imaging (PCMRI). Materials and Methods: Fifty patients with clinically confirmed or strongly suspected infectious meningitis and 20 controls were evaluated with MRI. Quantitative CSF analysis was performed at the level of cerebral aqueduct using cardiac-gated PCMRI. Velocity encoding (Venc) was kept at 20 cm/s. Patients were subdivided into Group I (patients with hydrocephalus [n = 21]) and Group II (patients without hydrocephalus [n = 29]). Results: The mean peak velocity and stroke volume in controls were 2.49 ± 0.86 cm/s and 13.23 ± 6.84 µl and in patients were 2.85 ± 2.90 cm/s and 16.30 ± 20.02 µl, respectively. A wide variation of flow parameters was noted in meningitis irrespective of the degree of ventricular dilatation. A significant difference in peak velocity and stroke volume was noted in Group II as compared to controls. Viral meningitis showed milder alteration of CSF flow dynamics as compared to bacterial and tuberculous etiologies. At a cutoff value of 3.57 cm/s in peak CSF velocity, the specificity was 100% and sensitivity was 22.7% to differentiate between viral and non-viral meningitis. Conclusion: Alteration of CSF flow dynamics on PCMRI can improve segregation of patients into viral and non- viral etiologies, especially in those in whom contrast is contraindicated or not recommended. This may aid in institution of appropriate clinical treatment.

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Phase-contrast magnetic resonance imaging in evaluation of hydrocephalus in pediatric patients

Sakr¹,

Hamisa

Sawaf

et al. 2023

Egypt J Radiol Nucl Med

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Background Hydrocephalus is an increase in cerebrospinal fluid volume leading to cerebral ventricular enlargement (ventriculomegaly). Phase-contrast magnetic resonance imaging is a sensitive technique to cerebrospinal fluid flow allowing noninvasive quantitative and qualitative evaluation of cerebrospinal fluid flow. Aim The purpose of our study was to assess the role of cerebrospinal fluid flowmetry using phase-contrast magnetic resonance imaging in evaluation of hydrocephalus in pediatric patients. Methods This prospective study included a group of 50 patients with ventriculomegaly diagnosed by a previous magnetic resonance imaging study. A control group of 20 subjects of matched age group were also included. All the participants were subjected to cerebrospinal fluid flow study. Results After quantitative assessment of cerebrospinal fluid flow at aqueduct level, the mean values of flow and velocity parameters were compared in both patients and control groups. The mean values in patients with aqueduct stenosis and Dandy–Walker malformation were significantly lower than those of the control group (no flow with hypodynamic circulation) with p < 0.001, < 0.017 for mean velocity, respectively, the mean values in patients with brain atrophy and Arnold–Chiari malformation, bilateral obstructive hydrocephalus at foramen of Monro were significantly lower than those of the control group (diminished flow with hypodynamic circulation) with p < 0.001, < 0.001, 0.046 for mean velocity, respectively, and 0.002, 0.001, 0.160 for stroke volume, respectively, the mean values in patients with communicating hydrocephalus and unilateral obstructive hydrocephalus at foramen of Monro were significantly higher than those of the control group (hyperdynamic flow) with p < 0.001 for mean velocity and stroke volume, and the mean values in patients with arachnoid cysts were within normal as compared to control group (normal dynamic flow). Conclusion Phase-contrast magnetic resonance imaging is a noninvasive technicality used for evaluation of cerebrospinal fluid flow both qualitatively and quantitatively for determining the type of hydrocephalus seen.

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Role of MRI CSF Flowmetry in Evaluation of Hydrocephalus in Pediatric Patients

Cited by 3 publications

References 8 publications

Role of MRI CSF Flowmetry in Evaluation of Hydrocephalus in pediatric patients with Correlation between thin cuts T2, heavy T2 and Phase contrast.

Role of MRI CSF Flowmetry in Evaluation of Hydrocephalus in pediatric patients with Correlation between thin cuts T2, heavy T2 and Phase contrast.

Magnetic Resonance Imaging Cerebrospinal Fluid Hydrodynamics in Patients with Meningitis

Phase-contrast magnetic resonance imaging in evaluation of hydrocephalus in pediatric patients

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