By selecting the "Show Filter" button in each of Tab 1, 2, 3, and 5, users can access the filter widgets. Press the same button again (now "Hide Filters"), users can hide them.

The mechanics filtering is simple. There is a set of widgets corresponding to each column of the table. By appropriately selecting only the values users want to see in that column, the filter will automatically hide the rest. For example, if users want to see only "Magnetic Resonance", they would select only "Magnetic Resonance" in the filter widget corresponding to the column "Modality". If the users want to see studies that either "Magnetic Resonance" or "Computed Tomography", users would then have those two selected in the widgets.

There are two types of filter widgets in mi2b2 client. The first type of filter widgets is a group of checkboxes (1). mi2b2 will filter out any checkbox that is not selected. By default, all checkboxes are selected (nothing is filtered).

The second is a Range Slider (2, 3). It is a scroll bar with two end points that users can move independently. The values between (and including) the two endpoints are the values that users select, and the rest are filtered out. This type of filter is useful for values that can be meaningfully ordered, such as dates (3), or have many values (such as MRNs2). By default, a Range Slider selects all values in the table (nothing is filtered). The minimum and the maximum values are always displayed. The filter action takes place when users release the dragging action of the end point controls. Once a range is set, users can also drag the range thumb to move both the upper and lower end point controls simultaneously.

A second type of filter widgets is a group of checkboxes. mi2b2 will filter out any checkbox that is not selected. By default, all checkboxes are selected (nothing is filtered).