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 |
|---|---|
| Journal | Journal of Neuroradiology |
| DOIs | |
| Publication status | Accepted/In press - Jan 1 2018 |
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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
Cite this
Effect of blood T1 estimation strategy on arterial spin labeled cerebral blood flow quantification in children and young adults with kidney disease. / Liu, Hua Shan; Jawad, Abbas F.; Laney, Nina; Hartung, Erum A.; Furth, Susan L.; Detre, John A.
In: Journal of Neuroradiology, 01.01.2018.Research output: Contribution to journal › Article
}
TY - JOUR
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 - 2018/1/1
Y1 - 2018/1/1
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
UR - http://www.scopus.com/inward/record.url?scp=85045468799&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85045468799&partnerID=8YFLogxK
U2 - 10.1016/j.neurad.2018.03.002
DO - 10.1016/j.neurad.2018.03.002
M3 - Article
AN - SCOPUS:85045468799
JO - Journal of Neuroradiology
JF - Journal of Neuroradiology
SN - 0150-9861
ER -