The Boxplot by RPID/Study Description report allows you to analyze dose indices by exam for one or more facilities.
To access the report, select CT Standardized Dose Index Reports from the Interactive Reports menu, then click the Boxplot by RPID/Study Description tab.
Select at least one Corporate Account and click Apply to create the chart. By default, the report filters are set to retrieve exams for all facilities within the past 30 days for all RPIDs and scanners.
The rest of the report filters and parameters are set to default values and may be changed at any time:
DIR Measure selects the Dose index type (CTDIvol, DLP, or SSDE) to be displayed using either the maximum value across scans or total for the exam
Note: Maximum and total values are equal for single-scan exams
Use the Exam Dates From and To filters to refine the search time period. By default the filters are set to query data for the past 30 days.
Query by determines whether the RPID / Study description filter displays standardized RPID exam names or the facility’s Study Descriptions
Body Part restricts the RPID / Study filter to exams for the specified body part(s)
RPID / Study Description lists the available RPIDs or Study Descriptions, as determined by the Query by parameter setting
The following example shows the distribution of measures for all head exams taken in the first four months of 2018, using the following criteria:
DIR Measure: DLP Total for Exam
Exam Dates From: 1/1/2020 to 4/20/2020
Query by: RPID
Body Part: FACE, HEAD, HEAD NECK
Note: Using the Body Part filter is not required in this example; however, doing so reduces the list of values in the RPID filter to only those related to the selected body part(s), making it easier to select only relevant RPIDs.
RPID / Study Description: All
Click on image to get a better view
Clicking on the exam name in the axis label in the chart filters the Facility Exam Count and Statistics by RPID tables to show data for that particular RPID only. In the example, below, the report is filtered to show data for CT HEAD NECK ANGIO BRN WO & W IVCON (RPID1006). Using the mouse to hover over the highest data point shows details for that exam.
Hovering over the grey areas of the boxplot shows the minimum value, lower hinge (25th percentile), median, upper hinge (75th percentile), and maximum value.
Clicking in any empty space on the graph clears the filter and resets the Facility Exam Count and Statistics by RPID tables.
You can also use the tables as filters. For example, clicking on the 15 - 18y age group row restricts the boxplots to exams for that age group only.
To compare data for this age group to registry statistics, use the Scatterplot Over Time or Boxplot by Scanner charts and select the RPID and Age Group using the report filters. In the example, below, the report is filtered to show RPID 266 for Age Group 15 - 18y. The tan portion of the plot highlights exams that have DLP values above the 75th percentile for the registry.
Note: Not all RPIDs and age groups have registry statistics