The GRID Quarterly Facility Report provides valuable comparative statistics, such as patient wait time and turnaround time, and can help you identify opportunities for improvement by comparing your facility’s performance to peers and national benchmarks. Reports are posted quarterly. Reports are available in PDF format and are available for download under the Aggregate Reports menu item in the NRDR Homepage Facility Management menu.  A sample report can be found here.


The Measures Definitions table provides a brief description of each measure listed in the report. There are different types of process measures, available to all participants, with Wait Time and Turnaround Time statistics by modality (Radiography, Ultrasound, CT, MRI, and PET). 



The Map of GRID Active Facilities page displays the geographic distribution of facilities that contributed data for the given reporting period, grouped by Census Region. The map provides a visual representation of which facilities are included in the Regional comparison statistics in the report.





Executive Summary tables provide results for Process and Outcome measures for each facility compared to each of the peer groups. Table cells are left blank or 0 for categories for which a facility or group was unable to provide data.  Facility values (based on averages) are compared to median values across GRID sites in various categories.

  • Sites in the same volume

    • < 50,000 exams

    • 50,000 – 150,000 exams 

    • > 150,000 exams

  • Sites in the same Census Region

    • Northeast

    • South

    • Midwest

    • West

  • Sites in the same Location

    • Metropolitan

    • Rural

    • Suburban

  • Sites of the same Category

    • Academic

    • Community Hospital

    • Freestanding Center

    • Multi-Specialty Clinic

    • Other

  • Children's Hospital (No/Yes)

  • All GRID sites for Current Year data

  • All GRID sites for Prior Year data (benchmark)



Facility characteristics charts show the number of active facilities by:

  • Category

  • Location

  • Number of radiologists

  • Region

  • Volume




Structural charts indicate how many facilities use the following systems in their practice.

  • Radiologist consult required before ordering image

  • Decision support available on order-entry system

  • Patient satisfaction survey specific to radiology in regular use

  • Electronic report access 24/7




Protocols charts provide counts of how many facilities in GRID have written protocols for:

  • Nephrotoxicity management

  • Pregnancy screening

  • Allergy screening

  • Communication of critical results

  • Communication of critical tests

  • Infection control

  • MR safety screening



The report provides detailed statistics for each process measure including the number of sites measured, mean, median, standard deviation, and quartiles. Tables include statistics for all comparison groups while charts include trends for sites of the same facility type and the nation (all GRID sites). The measured facility’s rank is also provided as compared to other facilities in the same Census Region, facilities of the same type, and all GRID facilities. Reports include results for outcomes and incidents as well as process measures.


The complete Statistics pages are listed as follows (Incident Rates pages do not include a variation graph). If your facility does not report data for the page the Site data will not show, but comparison data will still be available.


  • GRID Process Measure Variation: Radiography wait time (minutes)
  • GRID Process Measure Variation: Radiography wait time (minutes)
  • GRID Process Measure Variation: Ultrasound wait time (minutes)
  • GRID Process Measure Variation: Ultrasound wait time (minutes)
  • GRID Process Measure Variation: MRI wait time (minutes)
  • GRID Process Measure Variation: MRI wait time (minutes)
  • GRID Process Measure Variation: CT wait time (minutes)
  • GRID Process Measure Variation: CT wait time (minutes)
  • GRID Process Measure Variation: PET wait time (minutes)
  • GRID Process Measure Variation: PET wait time (minutes)
  • GRID Process Measure Variation: STAT CT wait time (minutes)
  • GRID Process Measure Variation: STAT CT wait time (minutes)
  • GRID Process Measure Variation: ROUTINE CT wait time (minutes)
  • GRID Process Measure Variation: ROUTINE CT wait time (minutes)
  • GRID Process Measure Variation: Digital radiography repeat rate (Percent)
  • GRID Process Measure Variation: Radiography turnaround time (hours)
  • GRID Process Measure Variation: Ultrasound turnaround time (hours)
  • GRID Process Measure Variation: MRI turnaround time (hours)
  • GRID Process Measure Variation: CT turnaround time (hours)
  • GRID Process Measure Variation: PET turnaround time (hours)
  • GRID Process Measure Variation: Radiography - Percent exams signed within 12 hours
  • GRID Process Measure Variation: Ultrasound - Percent exams signed within 12 hours
  • GRID Process Measure Variation: MRI - Percent exams signed within 12 hours
  • GRID Process Measure Variation: CT - Percent exams signed within 12 hours
  • GRID Process Measure Variation: PET - Percent exams signed within 12 hours
  • GRID Outcome Measure Variation: Non-diagnostic liver biopsy
  • GRID Outcome Measure Variation: Non-diagnostic lung biopsy
  • GRID Outcome Measure Variation: Lung biopsies resulting in pneumothorax requiring chest tube
  • GRID Outcome Measure Variation: Non-concordant findings - stereotactic breast biopsy
  • GRID Incident Rate Variation: Magnet incidents per 100,000 exams
  • GRID Incident Rate Variation: Cases of NSF per 100,000 exams
  • GRID Incident Rate Variation: Non-NSF Gd reactions per 100,000 exams
  • GRID Incident Rate Variation: Reactions for patients with implanted devices per 100,000 exams
  • GRID Incident Rate Variation: Attended falls in radiology department per 100,000 exams
  • GRID Incident Rate Variation: Unattended falls in radiology department per 100,000 exams
  • GRID Incident Rate Variation: Deaths in the radiology department per 100,000 exams
  • GRID Incident Rate Variation: Code blues in radiology department per 100,000 exams
  • GRID Incident Rate Variation: Nosocomial infections in radiology department per 100,000 exams
  • GRID Incident Rate Variation: Wrong exams per 100,000 exams
  • GRID Incident Rate Variation: Exams on wrong patients per 100,000 exams
  • GRID Incident Rate Variation: Exams on wrong sites per 100,000 exams





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