Effect of blood T1 estimation strategy on arterial spin labeled cerebral blood flow quantification in children and young adults with kidney disease

Hua Shan Liu; Abbas F. Jawad; Nina Laney; Erum A. Hartung; Susan L. Furth; John A. Detre

doi:10.1016/j.neurad.2018.03.002

Effect of blood T1 estimation strategy on arterial spin labeled cerebral blood flow quantification in children and young adults with kidney disease

Hua Shan Liu, Abbas F. Jawad, Nina Laney, Erum A. Hartung, Susan L. Furth, John A. Detre

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

Purpose: To compare blood T1 estimation approaches used for quantifying cerebral blood flow (CBF) with arterial spin labeled (ASL) perfusion MRI in a developmental cohort of chronic kidney disease (CKD) patients with anemia and a control group. Methods: 61 patients with CKD and 47 age-matched control subjects were studied. Blood T1 approaches included: (1) a fixed value, (2) estimation based on measured hematocrit (Hct), and (3) estimation based on Age + Sex using a published formula. Resulting T1 and CBF values were compared along with group, age and sex effects. Results: Highly significant group differences in CBF using fixed blood T1 were reduced when Hct-corrected blood T1 was used, and were eliminated entirely when using the Age + Sex estimated approach. In the control cohort, fixed T1 method showed the strongest correlations of CBF with age and sex. Hct-corrected T1 preserved a significant correlation between CBF and age and sex, while Age + Sex estimated T1 produced a poor fit of CBF with age and sex. Conclusions: Blood T1 estimation method can confound the interpretation of CBF changes measured using ASL MRI in patients with CKD. Blood T1 should ideally be corrected for hematocrit effects in clinical populations with anemia.

Original language	English
Pages (from-to)	29-35
Number of pages	7
Journal	Journal of Neuroradiology
Volume	46
Issue number	1
DOIs	https://doi.org/10.1016/j.neurad.2018.03.002
Publication status	Published - Feb 2019

Keywords

Anemia
Arterial spin labeling
Cerebral blood flow
Chronic kidney disease
T1 correction

ASJC Scopus subject areas

Radiological and Ultrasound Technology
Radiology Nuclear Medicine and imaging
Clinical Neurology

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10.1016/j.neurad.2018.03.002

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title = "Effect of blood T1 estimation strategy on arterial spin labeled cerebral blood flow quantification in children and young adults with kidney disease",

abstract = "Purpose: To compare blood T1 estimation approaches used for quantifying cerebral blood flow (CBF) with arterial spin labeled (ASL) perfusion MRI in a developmental cohort of chronic kidney disease (CKD) patients with anemia and a control group. Methods: 61 patients with CKD and 47 age-matched control subjects were studied. Blood T1 approaches included: (1) a fixed value, (2) estimation based on measured hematocrit (Hct), and (3) estimation based on Age + Sex using a published formula. Resulting T1 and CBF values were compared along with group, age and sex effects. Results: Highly significant group differences in CBF using fixed blood T1 were reduced when Hct-corrected blood T1 was used, and were eliminated entirely when using the Age + Sex estimated approach. In the control cohort, fixed T1 method showed the strongest correlations of CBF with age and sex. Hct-corrected T1 preserved a significant correlation between CBF and age and sex, while Age + Sex estimated T1 produced a poor fit of CBF with age and sex. Conclusions: Blood T1 estimation method can confound the interpretation of CBF changes measured using ASL MRI in patients with CKD. Blood T1 should ideally be corrected for hematocrit effects in clinical populations with anemia.",

keywords = "Anemia, Arterial spin labeling, Cerebral blood flow, Chronic kidney disease, T1 correction",

author = "Liu, {Hua Shan} and Jawad, {Abbas F.} and Nina Laney and Hartung, {Erum A.} and Furth, {Susan L.} and Detre, {John A.}",

year = "2019",

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doi = "10.1016/j.neurad.2018.03.002",

language = "English",

volume = "46",

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T1 - Effect of blood T1 estimation strategy on arterial spin labeled cerebral blood flow quantification in children and young adults with kidney disease

AU - Liu, Hua Shan

AU - Jawad, Abbas F.

AU - Laney, Nina

AU - Hartung, Erum A.

AU - Furth, Susan L.

AU - Detre, John A.

PY - 2019/2

Y1 - 2019/2

N2 - Purpose: To compare blood T1 estimation approaches used for quantifying cerebral blood flow (CBF) with arterial spin labeled (ASL) perfusion MRI in a developmental cohort of chronic kidney disease (CKD) patients with anemia and a control group. Methods: 61 patients with CKD and 47 age-matched control subjects were studied. Blood T1 approaches included: (1) a fixed value, (2) estimation based on measured hematocrit (Hct), and (3) estimation based on Age + Sex using a published formula. Resulting T1 and CBF values were compared along with group, age and sex effects. Results: Highly significant group differences in CBF using fixed blood T1 were reduced when Hct-corrected blood T1 was used, and were eliminated entirely when using the Age + Sex estimated approach. In the control cohort, fixed T1 method showed the strongest correlations of CBF with age and sex. Hct-corrected T1 preserved a significant correlation between CBF and age and sex, while Age + Sex estimated T1 produced a poor fit of CBF with age and sex. Conclusions: Blood T1 estimation method can confound the interpretation of CBF changes measured using ASL MRI in patients with CKD. Blood T1 should ideally be corrected for hematocrit effects in clinical populations with anemia.

AB - Purpose: To compare blood T1 estimation approaches used for quantifying cerebral blood flow (CBF) with arterial spin labeled (ASL) perfusion MRI in a developmental cohort of chronic kidney disease (CKD) patients with anemia and a control group. Methods: 61 patients with CKD and 47 age-matched control subjects were studied. Blood T1 approaches included: (1) a fixed value, (2) estimation based on measured hematocrit (Hct), and (3) estimation based on Age + Sex using a published formula. Resulting T1 and CBF values were compared along with group, age and sex effects. Results: Highly significant group differences in CBF using fixed blood T1 were reduced when Hct-corrected blood T1 was used, and were eliminated entirely when using the Age + Sex estimated approach. In the control cohort, fixed T1 method showed the strongest correlations of CBF with age and sex. Hct-corrected T1 preserved a significant correlation between CBF and age and sex, while Age + Sex estimated T1 produced a poor fit of CBF with age and sex. Conclusions: Blood T1 estimation method can confound the interpretation of CBF changes measured using ASL MRI in patients with CKD. Blood T1 should ideally be corrected for hematocrit effects in clinical populations with anemia.

KW - Anemia

KW - Arterial spin labeling

KW - Cerebral blood flow

KW - Chronic kidney disease

KW - T1 correction

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Effect of blood T1 estimation strategy on arterial spin labeled cerebral blood flow quantification in children and young adults with kidney disease

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