Home / Central Data Catalog / USDV4 / variable [imagingdx]
central

Uniform Data Set version 4
UDSv4 - Template

United States
Reference ID
USDv4
Producer(s)
National Alzheimer’s Coordinating Center (NACC) and the NIA-funded ADRC network
Collections
Clinical Trial
Metadata
DDI/XML JSON
Created on
Jul 02, 2026
Last modified
Jul 07, 2026
Page views
11773

5. Imaging - Was imaging used for assessing etiological diagnosis? (imagingdx)

Data file: UDSv4TemplateForXMLD_2026-04-14_0731.REDCap.xml

Overview

Valid: 55
Range: -
Format:

Questions and instructions

Question pretext
[biomarkdx]='1' and [fluidbiom]<>''
Categories
Value Category Cases
0 No 21
38.2%
1 Yes, only PET/SPECT imaging was used 10
18.2%
2 Yes, only MR/CT imaging was used 12
21.8%
3 Yes, both PET/SPECT and MR imaging were used 12
21.8%
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.
Back to Catalog