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phc_tau_simple

Source: R/data.R
phc_tau_simple.Rd

NACCADRC ADSP PHC dataset. The data is sourced from the file(s) NACC_ADSP_PHC_Tau_Simple_2024.csv.

Usage

data(phc_tau_simple)

Format

A data frame with 497 rows and 21 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_B12pos

Threshold-based tau-positivity in B1/B2region (0 = negative 1 = positive)

PHC_B3pos

Threshold-based tau-positivity in B3 region (0 = negative 1 = positive)

PHC_B4pos

Threshold-based tau-positivity in B4 region (0 = negative 1 = positive)

PHC_B5pos

Threshold-based tau-positivity in B5 region (0 = negative 1 = positive)

PHC_B6pos

Threshold-based tau-positivity in B6 region (0 = negative 1 = positive)

PHC_HIBRAAKpos

Hierarchical Braak positivity and stage (0 = Braak stage 0 1_2 = positive in Braak stage 1 or 2 3 = positive in Braak stages 1-3 4 = positive in Braak stages 1-4 5 = positive in Braak stages 1-5 6 = positive in Braak stages 1-6 Discordant = positivity is not consistent or may skip stages)

Source

https://www.naccdata.org/about-nacc-data/.

Examples

if (FALSE) { # \dontrun{
browseVignettes('NACCADRC')
} # }