Wednesday, January 15, 2025 1/15/2025

Noninvasive Noncontact High-Density Optical Imaging of Neonatal Intraventricular Hemorrhage

Award Number: R01HD101508
ORGANIZATION: NATIONAL INSTITUTE OF CHILD HEALTH AND HUMAN DEVELOPMENT
OPDIV: NIH
AWARD CLASS: DISCRETIONARY
AWARD ACTIVITY TYPE: SCIENTIFIC/HEALTH RESEARCH (INCLUDES SURVEYS)

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ABSTRACT Germinal matrix-intraventricular hemorrhage (GM-IVH) is a major complication of premature birth, occurring in up to 45% of very low birthweight neonates (<1500 g) due to fragility of immature blood vessels within the germinal matrix. GM-IVH can also lead to hydrocephalus (HCP) and increased intracranial pressure, which further induces inflammation and brain tissue injury. Though neonatal GM-IVH and HCP are increasingly common due to the rising survival rate of preterm births, there are no established biomarkers or guidelines for their treatments to prevent brain injury. Preterm infants with GM-IVH/HCP are vulnerable to alterations in cerebral blood flow (CBF) because they have impaired cerebrovascular autoregulation. However, there are no reliable functional imaging methods at the bedside of neonatal intensive care units (NICUs) for repeatedly assessing either degree of cerebral injury or effectiveness of interventions. Near-infrared spectroscopy and tomography technologies have been used for decades as noninvasive bedside tools for continuous monitoring of cerebral blood oxygen saturation (StO2). However, most systems lack the combination of spatial resolution and wide field- of-view (FOV) to image distributed brain functions and discriminate the brain signal from overlaying scalp and skull. A few high-density tomographic systems use numerous discrete sources and detectors coupled with fiber bundles to a head cap. However, adjusting and maintaining a stable optical coupling of numerous fibers to a small fragile neonatal head (i.e., a contact measurement) is labor-intensive and poses great challenges to head cap design with safety concern. To overcome these limitations, we propose to develop a novel, noncontact, high-density-detection (using a CCD/CMOS camera), multi-wavelength speckle contrast diffuse correlation tomography (MW-scDCT) system to accommodate fast, high-resolution, functional imaging of both CBF and StO2 over a large FOV on the neonatal head. The MW-scDCT will be rigorously calibrated and optimized using standard tissue phantoms (Aim 1). In vivo calibration/evaluation will be conducted against MRI and histological examination in an IVH/HCP model of neonatal piglets who preserve great similarities with human neonates (Aim 2). A pilot clinical observational study will be performed in preterm neonates with GM-IVH/HCP under standard of care in the NICU (Aim 3). Cerebral hemodynamics/metabolism, cerebrovascular autoregulation, and cerebral functional connectivity will be analyzed from serial functional images taken over several weeks after birth. We hypothesize that cerebral hemodynamic/metabolic alterations detected by MW-scDCT correlate with progression of brain injury after GM-IVH/HCP and recovery after treatment. Multiple parameters will provide more comprehensive assessments of neonatal brain injury/recovery compared to a single parameter alone. This study will fulfill a critical need in the field of neonatology to provide objective measures/biomarkers to guide timing of treatment for GM-IVH and HCP. We anticipate that noninvasive, repeated, and longitudinal cerebral monitoring for the guidance of interventions could be eventually implemented as standard of care in NICUs.


Issue Date FY	Funding FY	Legal Entity Name	Legal Entity Address	Legal Entity City	Legal Entity State	Legal Entity Zip Code	Legal Entity COUNTY	Legal Entity COUNTRY	Assistance Listing	Award Code	Budget Year	Action Date	Action Type	Action Amount

Issue Date FY: 2024 ( Subtotal = $532,871 )
2024	2024	UNIVERSITY OF KENTUCKY RESEARCH FOUNDATION, THE	500 S LIMESTONE	LEXINGTON	KY	40526	FAYETTE	USA	Child Health and Human Development Extramural Research	001	5	5/6/2024	NON-COMPETING CONTINUATION	$48,444
2024	2024	UNIVERSITY OF KENTUCKY RESEARCH FOUNDATION, THE	500 S LIMESTONE	LEXINGTON	KY	40526	FAYETTE	USA	Child Health and Human Development Extramural Research	000	5	3/25/2024	NON-COMPETING CONTINUATION	$484,427
														Subtotal = $532,871

Issue Date FY: 2023 ( Subtotal = $537,410 )
2023	2023	UNIVERSITY OF KENTUCKY RESEARCH FOUNDATION, THE	500 S LIMESTONE 109 KINKEAD HALL	LEXINGTON	KY	40526	FAYETTE	USA	Child Health and Human Development Extramural Research	000	4	3/28/2023	NON-COMPETING CONTINUATION	$537,410
														Subtotal = $537,410

Issue Date FY: 2022 ( Subtotal = $536,567 )
2022	2022	UNIVERSITY OF KENTUCKY RESEARCH FOUNDATION, THE	500 S LIMESTONE 109 KINKEAD HALL	LEXINGTON	KY	40526	FAYETTE	USA	Child Health and Human Development Extramural Research	001	3	4/18/2022	NON-COMPETING CONTINUATION	$53,660
2022	2022	UNIVERSITY OF KENTUCKY RESEARCH FOUNDATION, THE	500 S LIMESTONE 109 KINKEAD HALL	LEXINGTON	KY	40526	FAYETTE	USA	Child Health and Human Development Extramural Research	000	3	4/12/2022	NON-COMPETING CONTINUATION	$482,907
														Subtotal = $536,567

Issue Date FY: 2021 ( Subtotal = $535,724 )
2021	2021	UNIVERSITY OF KENTUCKY	500 S LIMESTONE 109 KINKEAD HALL	LEXINGTON	KY	40526	FAYETTE	USA	Child Health and Human Development Extramural Research	000	2	3/31/2021	NON-COMPETING CONTINUATION	$535,724
														Subtotal = $535,724

Issue Date FY: 2020 ( Subtotal = $512,893 )
2020	2020	UNIVERSITY OF KENTUCKY	500 S LIMESTONE 109 KINKEAD HALL	LEXINGTON	KY	40526	FAYETTE	USA	Child Health and Human Development Extramural Research	000	1	4/9/2020	NEW	$512,893
														Subtotal = $512,893

Grand Total All Awards = $2,655,465

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Noninvasive Noncontact High-Density Optical Imaging of Neonatal Intraventricular Hemorrhage

Award Number: R01HD101508

ORGANIZATION: NATIONAL INSTITUTE OF CHILD HEALTH AND HUMAN DEVELOPMENT

OPDIV: NIH

AWARD CLASS: DISCRETIONARY

AWARD ACTIVITY TYPE: SCIENTIFIC/HEALTH RESEARCH (INCLUDES SURVEYS)

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