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Specialty: Radiology
Condition: Hydrocephalus

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Total 28 results found since Jan 2013.

Aqueductal Stroke Volume: Comparisons with Intracranial Pressure Scores in Idiopathic Normal Pressure Hydrocephalus ADULT BRAIN
CONCLUSIONS: Aqueductal stroke volume does not reflect intracranial pressure pulsatility or symptom score, but rather aqueduct area and ventricular volume. The results do not support the use of aqueductal stroke volume for selecting patients for shunting.
Source: American Journal of Neuroradiology - September 10, 2015 Category: Radiology Authors: Ringstad, G., Emblem, K. E., Geier, O., Alperin, N., Eide, P. K. Tags: ADULT BRAIN Source Type: research

Aqueductal CSF Stroke Volume Is Increased in Patients with Idiopathic Normal Pressure Hydrocephalus and Decreases after Shunt Surgery ADULT BRAIN
CONCLUSIONS: Aqueductal CSF stroke volume was increased in patients with idiopathic normal pressure hydrocephalus and decreased after shunt surgery, whereas retrograde aqueductal net flow did not seem to be specific for patients with idiopathic normal pressure hydrocephalus. On the basis of the results, the usefulness of CSF flow parameters to predict outcome after shunt surgery seem to be limited.
Source: American Journal of Neuroradiology - March 13, 2019 Category: Radiology Authors: Shanks, J., Markenroth Bloch, K., Laurell, K., Cesarini, K. G., Fahlström, M., Larsson, E.- M., Virhammar, J. Tags: ADULT BRAIN Source Type: research

Audit of CT reporting standards in cases of intracerebral haemorrhage at a comprehensive stroke centre in Australia
ConclusionIn this audit, volume was the most under‐reported of the established ICH characteristics predictive of ICH outcome. Readily calculated from multiplanar reformats using the ABC/2 technique, the routine reporting of ICH volume is recommended. More reporting attention to ICH density heterogeneity and shape irregularity is encouraged, given their emerging importance. Where acute CTA is performed, the presence of any dynamic haemorrhage (CTA spot sign) should be reported.
Source: Australasian Radiology - May 31, 2016 Category: Radiology Authors: Christen D Barras, Hamed Asadi, Pramit M Phal, Brian M Tress, Stephen M Davis, Patricia M Desmond Tags: Medical Imaging —Original Article Source Type: research

Central Nervous System involvement in tuberculosis: an MRI study considering differences between patients with and without Human Immunodeficiency Virus 1 infection
Conclusions Stroke involving the basal ganglia best differentiates CNSTB patients who are HIV+ from those HIV-. This finding was not correlated with meningeal enhancement suggesting that small arteries involvement might precede it. Therefore, we think that HIV+ patients with a new onset of stroke should be evaluated for CNSTB. Follow-up MRI should also be planned since meningeal enhancement might appear in later stages of the disease.
Source: Journal of Neuroradiology - September 18, 2019 Category: Radiology Source Type: research

Are gait changes linked to CSF flow changes in the sagittal sinus?
ConclusionA link between gait improvement resulting from CSF drainage and sagittal sinus measurements indicates that the sagittal sinus may play a role in the manifestation of symptoms in iNPH. This may have implications for the diagnosis of iNPH and potentially inform clinical decision making regarding surgical intervention.
Source: Neuroradiology - March 25, 2019 Category: Radiology Source Type: research

Cerebrospinal fluid dynamics in idiopathic normal pressure hydrocephalus on four-dimensional flow imaging
ConclusionsStroke volumes, reversed-flow rates, and shear stress through the cerebral aqueduct on 4D flow MRI are useful parameters for iNPH diagnosis. These findings can aid in elucidating the mechanism of ventricular enlargement in iNPH.Key Points• The CSF stroke volume and bimodal shear stress at the cerebral aqueduct were considerably higher in patients with iNPH.• The patients with pure iNPH had significantly higher shear stress at the ventral aspect of the cerebral aqueduct than those with co-occurrence of iNPH and AD.• The shear stress at the cerebral aqueduct was significantly associated with the diameter of ...
Source: European Radiology - April 2, 2020 Category: Radiology Source Type: research

Relationship between cerebrospinal fluid flow, ventricles morphology, and DTI properties in internal capsules: differences between Alzheimer's disease and normal-pressure hydrocephalus.
CONCLUSION: Although AD and NPH both involve CSF disorders, the two diseases do not have the same impact on the internal capsules. The magnitude of the ADC is related to the aqueductal CSF stroke volume in AD, whereas FA is related to ventricular volume in NPH. PMID: 24136984 [PubMed - as supplied by publisher]
Source: Acta Radiologica - October 17, 2013 Category: Radiology Authors: Daouk J, Chaarani B, Zmudka J, Capel C, Fichten A, Bouzerar R, Gondry-Jouet C, Jouanny P, Balédent O Tags: Acta Radiol Source Type: research

Transmantle Pressure Computed from MR Imaging Measurements of Aqueduct Flow and Dimensions ADULT BRAIN
CONCLUSIONS: The nondimensional fluid mechanics model for computing transmantle pressure detected changes in pressure related to age and aqueductal dimensions. This novel methodology can be easily used to investigate the clinical relevance of the transmantle pressure in normal pressure hydrocephalus, pediatric communicating hydrocephalus, and other CSF disorders.
Source: American Journal of Neuroradiology - October 6, 2021 Category: Radiology Authors: Sincomb, S. J., Coenen, W., Criado-Hidalgo, E., Wei, K., King, K., Borzage, M., Haughton, V., Sanchez, A. L., Lasheras, J. C. Tags: ADULT BRAIN Source Type: research

Does Phase-Contrast Imaging through the Cerebral Aqueduct Predict the Outcome of Lumbar CSF Drainage or Shunt Surgery in Patients with Suspected Adult Hydrocephalus? ADULT BRAIN
CONCLUSIONS: This study suggests that the results of phase-contrast MR imaging through the cerebral aqueduct alone should not be used to select patients for diagnostic or therapeutic CSF diversion.
Source: American Journal of Neuroradiology - December 14, 2018 Category: Radiology Authors: Blitz, A. M., Shin, J., Baledent, O., Page, G., Bonham, L. W., Herzka, D. A., Moghekar, A. R., Rigamonti, D. Tags: ADULT BRAIN Source Type: research

Quantification of Oscillatory Shear Stress from Reciprocating CSF Motion on 4D Flow Imaging ADULT BRAIN
CONCLUSIONS: Oscillatory shear stress, which reflects wall shear stress vector changes better than the conventional wall shear stress magnitude and the oscillatory shear index, can be directly measured on 4D flow MR imaging. Oscillatory shear stress at the cerebral aqueduct was considerably higher in patients with idiopathic normal pressure hydrocephalus.
Source: American Journal of Neuroradiology - March 15, 2021 Category: Radiology Authors: Yamada, S., Ito, H., Ishikawa, M., Yamamoto, K., Yamaguchi, M., Oshima, M., Nozaki, K. Tags: ADULT BRAIN Source Type: research

Emergency room decision-making for urgent cranial computed tomography: selection criteria for subsets of non-trauma patients.
CONCLUSION: Although 100% sensitivity was not achieved, our results may contribute to the evidence that in the absence of focal neurologic deficit, headache with vomiting or altered mental status in patients aged <60 years cranial tomography can be refrained from, in the general population as well as in the subgroup defined above. Further research might validate patient history as a parameter. PMID: 24060816 [PubMed - as supplied by publisher]
Source: Acta Radiologica - September 23, 2013 Category: Radiology Authors: Tung C, Lindgren A, Siemund R, van Westen D Tags: Acta Radiol Source Type: research

Early Experience with Low Contrast Imaging (LCI) Technology during Neuroendovascular Interventional Procedures
CONCLUSIONSLCI is a promising tool in the arsenal of a neuroendovascular interventionist, especially when a complication is suspected during an intervention, potentially obviating the need for immediate transfer of the patient to a conventional CT scanner. Further studies comparing LCI with conventional noncontrast CT imaging are necessary.
Source: Journal of Neuroimaging - March 1, 2014 Category: Radiology Authors: Maxim Mokin, Elad I. Levy, Kenneth V. Snyder, Adnan H. Siddiqui Tags: Clinical Investigative Study Source Type: research

Preoperative Prognostic Value of MRI Findings in 108 Patients with Idiopathic Normal Pressure Hydrocephalus FELLOWS' JOURNAL CLUB
CONCLUSIONS: A small callosal angle, wide temporal horns, and occurrence of disproportionately enlarged subarachnoid space hydrocephalus are common in patients with idiopathic normal pressure hydrocephalus and were significant predictors of a positive shunt outcome. These noninvasive and easily assessed radiologic markers could aid in the selection of candidates for shunt surgery.
Source: American Journal of Neuroradiology - December 15, 2014 Category: Radiology Authors: Virhammar, J., Laurell, K., Cesarini, K. G., Larsson, E.- M. Tags: FELLOWS ' JOURNAL CLUB Source Type: research

Dynamic State of Water Molecular Displacement of the Brain during the Cardiac Cycle in Idiopathic Normal Pressure Hydrocephalus
Normal pressure hydrocephalus (NPH) has been characterized as a chronic communicating hydrocephalus in elderly patients with the clinical triad gait disturbance, dementia, and incontinence [1–3]. The clinical symptoms of both secondary and idiopathic NPH (iNPH) can be reversed by the removal of the accumulated cerebrospinal fluid (CSF) [3]. Secondary NPH can result in subarachnoid hemorrhage, trauma, and stroke. Although numerous investigations have attempted to clarify the underlying mechanism of and to diagnose iNPH, its exact causes remain poorly understood.
Source: Computerized Medical Imaging and Graphics - January 6, 2015 Category: Radiology Authors: Hirohito Kan, Tosiaki Miyati, Mitsuhito Mase, Tomoshi Osawa, Naoki Ohno, Harumasa Kasai, Nobuyuki Arai, Makoto Kawano, Yuta Shibamoto Source Type: research

Current and Emerging MR Imaging Techniques for the Diagnosis and Management of CSF Flow Disorders: A Review of Phase-Contrast and Time-Spatial Labeling Inversion Pulse REVIEW ARTICLE
This article provides an overview of phase-contrast and time–spatial labeling inversion pulse MR imaging techniques to assess CSF movement in the CNS under normal and pathophysiologic situations. Phase-contrast can quantitatively measure stroke volume in selected regions, notably the aqueduct of Sylvius, synchronized to the heartbeat. Judicious fine-tuning of the technique is needed to achieve maximal temporal resolution, and it has limited visualization of CSF motion in many CNS regions. Phase-contrast is frequently used to evaluate those patients with suspected normal pressure hydrocephalus and a Chiari I malformat...
Source: American Journal of Neuroradiology - April 10, 2015 Category: Radiology Authors: Yamada, S., Tsuchiya, K., Bradley, W. G., Law, M., Winkler, M. L., Borzage, M. T., Miyazaki, M., Kelly, E. J., McComb, J. G. Tags: REVIEW ARTICLE Source Type: research