DIR Interactive Reports allow you to analyze DIR measure data for your participating facilities using customized criteria. The reports can be a useful tool to identify outliers, find missing data and gaps in data transmissions, and highlight other patterns for further investigation.
Standardized Report Data
DIR Interactive Reports use the same processed and standardized data as DIR aggregate feedback reports, such as the quarterly Executive Summary and facility Excel reports. Reports generated by the tool
incorporate data from localizers to calculate size-specific dose estimates (SSDE),
normalize dose indices based on phantom size for fair comparison with other facilities (head exams standardized to 16cm and body exams standardized to 32cm phantoms),
standardize exam names, using the RadLex Playbook ID (RPID) mappings created by your facility, so that data may be compared to registry benchmarks, and
exclude inapplicable data such as dose indices associated with timing runs.
More information on the standardization process is available in The ACR Computed Tomography Dose Index Registry: The 5 Million Examination Update.
Working with DIR Interactive Reports
Reports are available under the DIR Interactive Reports menu and are generated using Tableau software. This guide provides a brief overview for working with the Tableau interface.
Tableau reports are organized into workbooks. Clicking on an Interactive Reports menu item opens a workbook in the portal. Some workbooks, such as Standardized Dose Index Reports, contain multiple reports, separated into tabs across the top.
Filters and Parameters
Tableau reports use filters and parameters to help users navigate and analyze reports. Although they appear similar, they provide different functionality.
Filters provide choices for selecting criteria to restrict what data are shown in a report, using values directly from the dataset. For example, the Facility ID filter in the Exam Search report (above) lists all available facilities for the user by directly querying the dataset.
Parameters are inputs that act as switches to change what a user sees or how data are computed in the report. For example, the Boxplot by Scanner report uses the following parameters
DIR Measure: selects which Dose Index type to chart - CTDIvol, DLP, or SSDE
Query by: determines whether the RPID / Study Description filter displays standardized RPID exam names or the facility’s Study Descriptions
Benchmarks: selects whether to display the DIR Median, DIR 75th percentile, or both benchmarks on the chart
Scanner Aggregation Level: determines whether to aggregate scanner data in the chart by device, model, or manufacturer.
Filters and parameters are displayed on the left side of the screen. By default, reports do not display any data until all filters have selected at least one value. Some filters, such as Facility ID and RPID / Study, are set to none by default and must be selected by the user before data can be retrieved.
The report title indicates the minimum filter criteria to be set in order to retrieve data upon first opening a report. For example, the reports available in the Standardized Dose Index Reports workbook require at least one Facility ID and one RPID or Study Description to be selected. The selected values are shown in blue as part of the report title. If either field is set to None, then nothing appears in the report.
Click anywhere on a filter to select values. Filters that allow more than one selection have an Apply button so that you can select multiple values and control when they are applied to the report. The Apply button is greyed out until at least one value is selected. Click on the desired values, then click the Apply button to apply the changes, and then click anywhere on the report to close the filter selection window. Note that you may need to select values for other filters before any data appear in the report.
For filters with lots of values, a search bar appears for wildcard searches. For example, typing AB in the filter, below, quickly restricts the filter to only RPIDs with the letters AB appearing anywhere in the description. Searches are not case sensitive.
The values in some filters are dynamic; that is, they are determined by the values selected in other filters. For example, The Exam Search report shows only those RPID/Study values available for exams that meet the other filter criteria, i.e. Facility ID, Exam Date, Age Group, Body Part, and Scanner.
Filters within the same workbook apply to all reports within that workbook. For example, the Standardized Dose Index Reports workbook has four reports, and the Facility ID selected in one report applies to all four reports simultaneously, making it easier to switch between reports without having to select the same filter criteria.
The Download button, in the bottom right corner, provides multiple options for downloading data.
Choosing Image or PDF creates a .png or PDF file of the current screen. These options capture only what is visible on screen, i.e. what you can se without scrolling.
Data creates a .csv file of the rows meeting the current filter criteria. The Summary tab includes the fields displayed on screen, and the Full Data tab includes additional fields that meet filter criteria but may not be displayed in the report. For example, if CTDIvol Max across Scans is selected as the measure for a scatterplot report, only that measure is included in the Summary tab, but all other measures (e.g. SSDE Max Across Scans, DLP Total for Exam) are available from the Full Data tab.
Crosstab creates a .csv in a cross tabular format.
If the Data and Crosstab options are greyed out, click on the chart or table you want to download. For example, the Scatterplot Over Time report has three data sections
scanner statistics table
Each of these may be downloaded. Click on a chart or table, then click the Download button and select Data or Crosstab.
Interactive Reports are designed with fixed dimensions and may be too large to fit on smaller screens, such as laptops. Click the Full Screen icon, in the lower right corner, next to the Download icon, to increase the viewing area.
Highlighting and Details
With some interactive reports you can highlight segments of data and hover over data points for additional information. For example, positioning the cursor over a single data point in the Scatterplot Over Time report provides detailed data about a particular exam. Clicking on the data point highlights similar exams – e.g in the Scatterplot report, all exams taken with the same scanner are highlighted. To undo highlighting, click on the data point a second time.
For tables, the highlighting feature works when clicking on a data value in the table. For example, hovering over the value 3.56 in the table, below, brings up more details for the exam.
Reports with legends also allow you to highlight a specific item by clicking on the legend. For example, clicking on a single scanner in the Scatterplot report dims the data points for all other scanners to better highlight the pattern for the selected scanner.
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