Standard name mapping

Introduction

Figure 1: The config menu

The same type of examination can appear in OpenREM under a range of different requested procedure names, study descriptions or procedure names. Individual acquistions of the same type may appear under a range of different acquisition protocol names. The standard name mapping feature allows a number of differently named exams or acquisitions to be grouped into a single standard name, allowing easier analysis of data for audits and diagnostic reference level (DRL) creation (see DRL definition on the IAEA website).

If the logged in user is an OpenREM adminstrator the standard name settings option will be available on the Config drop down menu (figure 1). Clicking on this will take the administrator to the standard name mapping settings page (figure 2). From this page the administrator can enable or disable standard name mapping for the OpenREM installation. Enabling standard name mapping causes an additional column to be displayed in each modality summary page where any standard study-level names associated with each entry in the exam table are displayed (figure 3), and when viewing the details of an individual study any matching standard acquisition names are displayed in the appropriate table row (figure 4). Enabling standard name mapping also makes the standard study name and standard acquisition name charts available. The administrator can also use the standard name settings page to access the standard name internal database refresh links. Note that the use of these links is not expected to be necessary in normal OpenREM use.

Figure 2: The standard name mapping settings page

Figure 3: Standard study names visible in the CT summary page

Figure 4: Standard acquisition names visible in a study details page

Selecting the standard name mapping option within the Config drop down menu (figure 1) will take the user to the standard name mapping summary page(figure 5). This page shows any existing standard name mappings, which an OpenREM administrator is able to Modify or Delete using the buttons on the right hand side of each entry. A normal OpenREM user can only view standard name mappings.

Figure 5: The standard name mapping summary page

Creating a new standard name mapping

A new standard name mapping can be created by an OpenREM administrator by clicking on the Add new XX entry button, where XX corresponds to a particular modality. This takes the administrator to a screen where the new standard name is set (figure 6), and where the administrator selects the study descriptions, requested procedure names, procedure names and acquisition protocol names that they want to be included in the new standard name definition. The available items are listed in the left-hand tables. The administrator can move a required item into the right-hand table by double-clicking on an entry, or selecting an entry and then clicking on the arrow pointing to the right.

Figure 6: Adding or modifying a standard name

The example in figure 7 shows that head-related study descriptions and requested procedure names have been chosen for a new standard name of Head.

Once all relevant items have been transferred to the right-hand tables the Submit button at the bottom of the page must be clicked to confirm the new entry. Once a study description, requested procedure name, procedure name or acquisition protocol name has been assigned to a standard name it cannot be added to another standard name, and disappears as an option in the left-hand tables when configuring future new standard name entries.

Figure 7: Adding or modifying a standard name mapping

Modifying an existing standard name mapping

An existing standard name mapping can be modified by clicking the Modify button on the right-hand side of an entry in the standard name mapping summary page (figure 5). This takes the administrator to the same screen as shown in figure 7, where the chosen study descriptions, requested procedure names, procedure names and acquisition protocol names can be amended. Clicking Submit confirms the changes.

Charts

Charts of standard name data can be plotted in OpenREM. This can be helpful because at study-level it enables multiple study descriptions, requested procedure names and procedure names to be combined into a single data point. At acquisition level, multiple acquisition protocol names can be combined into a single data point. For example, figure 8 below shows the median DLP for a range of study descriptions. Three of the study descriptions relate to the head, and two of them relate to scans of the chest and abdomen. The three head-related descriptions have been mapped to a Head standard study name, and the two chest and abdomen descriptions have been mapped to a Chest + Abdomen standard study name, resulting in the chart shown in figure 9. The standard name mapping allows clearer visual comparison of the data per study for each hospital and piece of equipment.

Figure 8: Chart of median DLP for each study description

Figure 9: Chart of median DLP for each standard study name