NACCADRC ADSP PHC dataset. The data is sourced from the file(s) NACC_ADSP_PHC_Amyloid_Simple_2024.csv.
Usage
data(phc_amyloid_simple)Format
A data frame with 1903 rows and 18 variables:
- NACCID
Participant ID
- PHC_Age_Cognition
Participant's Age at nearest Cognitive Data Collection
- PHC_Age_PET
Participant's Age at PET Data Collection
- PHC_SCANDATE
Date of PET Scan
- PHC_TRACER
PET Radiotracer
- PHC_ACQUISITION_START
Acquisition start-stop time post-injection (minutes)
- PHC_ACQUISITION_END
Acquisition start-stop time post-injection (minutes)
- PHC_ACQUISITION_TIME
Acquisition start-stop time post-injection (1 = 30-60 2 = 40-60 3 = 40-70 4 = 45-75 5 = 45-90 6 = 50-70 7 = 60-90 8 = 70-90 9 = 70-110 10 = 80-100 11 = 90-110 12 = 30-45 99 = outside of acceptable range)
- PHC_QC_IMAGE
Determination if scan passed or failed quality control– image quality (0 = Fail 1 = Pass 2 = Pending)
- PHC_QC_TIMING
Determination if scan passed or failed quality control– acquisition time (0 = Fail 1 = Pass 2 = Pending)
- PHC_QC_NOTES
Notes related to failed quality control. (1 = Abnormal image 2 = Technical problem 3 = Anatomic abnormality 4 = Bottom of brain cut 5 = Early finish 6 = Early start 7 = Front of brain cut 8 = High glucose 9 = Late start 10 = Motion-induced attenuation artifact 11 = No attenuation or scatter correction 12 = Scan aborted early 13 = Severe motion 14 = Top of brain cut 15 = Wrong reconstruction parameters (16) Wrong voxel size 88 = Pass/Pending 99 = Other)
- PHC_COMPLIANT_ACQUISITION_START
Tracer compliant acquisition start time post-injection (minutes)
- PHC_COMPLIANT_ACQUISITION_END
Tracer compliant acquisition stop time post-injection (minutes)
- PHC_INJECTED_DOSE
Measure of injected radioligand dose (millicurie)
- PHC_DYNAMIC
Whether dynamic (multiple frames available) or static (1 = static 2 = dynamic)
- PHC_CENTILOIDS
Centiloids (CLs) values converted from GAAIN summary cortical SUVR normalized by GAAIN whole cerebellum; See ADSP MRI-Free PET Methods document (6 = Early start 7 = Front of brain cut 8 = High glucose)
- PHC_AMYLOID_STATUS
Amyloid positivity determined by applying thresholds to the GAAIN summary cortical SUVR normalized by GAAIN whole cerebellum; See ADSP MRI-Free PET Methods document (0 = negative 1 = positive 9 = unknown)
- PHC_CL_FAIL
Projected centiloid values for images that failed QC_TIMING
Examples
if (FALSE) { # \dontrun{
browseVignettes('NACCADRC')
} # }