Ignite Creation Date:
2025-12-24 @ 10:45 PM
Ignite Modification Date:
2025-12-25 @ 8:15 PM
Study NCT ID:
NCT05192135
Status:
UNKNOWN
Last Update Posted:
2023-03-07
First Post:
2021-12-30
Is NOT Gene Therapy:
False
Has Adverse Events:
False
Brief Title:
Influence of Hematocrit Level on the Visibility of the Venous Network in Magnetic Susceptibility Imaging
Sponsor:
Fondation Hôpital Saint-Joseph
Organization:
Study Overview
Official Title:
Influence of Hematocrit Level on the Visibility of the Venous Network in Magnetic Susceptibility Imaging
Status:
UNKNOWN
Status Verified Date:
2023-03
Last Known Status:
ACTIVE_NOT_RECRUITING
Delayed Posting:
No
If Stopped, Why?:
Not Stopped
Has Expanded Access:
False
If Expanded Access, NCT#:
N/A
Has Expanded Access, NCT# Status:
N/A
Acronym:
HEMAT_SWI
Brief Summary:
Magnetic susceptibility imaging is a magnetic resonance imaging (MRI) technique that uses the magnetic properties of tissues and the BOLD (blood oxygen level-dependent) effect. It allows a better visualization of venous structures and hemorrhagic lesions. These sequences are now used in clinical routine.
The extreme sensitivity of these sequences to the oxy/deoxyhemoglobin ratio makes it possible to describe a new MRI semiology, particularly in the context of cerebral ischemia. The interest of the analysis of the venous network signal, which can reflect cerebral perfusion, has been reported.
However, the influence of the hematocrit level on the signal of the venous network in magnetic susceptibility imaging has not been evaluated at present. It seems important to better define the influence of hematocrit level on the signal of the veins with this sequence to avoid potential diagnostic errors.
The extreme sensitivity of these sequences to the oxy/deoxyhemoglobin ratio makes it possible to describe a new MRI semiology, particularly in the context of cerebral ischemia. The interest of the analysis of the venous network signal, which can reflect cerebral perfusion, has been reported.
However, the influence of the hematocrit level on the signal of the venous network in magnetic susceptibility imaging has not been evaluated at present. It seems important to better define the influence of hematocrit level on the signal of the veins with this sequence to avoid potential diagnostic errors.
Detailed Description:
None
Study Oversight
Has Oversight DMC:
False
Is a FDA Regulated Drug?:
False
Is a FDA Regulated Device?:
False
Is an Unapproved Device?:
None
Is a PPSD?:
None
Is a US Export?:
None
Is an FDA AA801 Violation?: