To edit an inventory entry, first select the entry in the list of database entries (Note: this screen capture has been anonymized, the entry highlighted in blue is named "Tutorial, Inventory").
After selecting an entry to edit, click the Edit button to open the inventory editor sheet.
Note: if you simply enter 1.0 as the source strength, you can use the Implant Calculator to determine the average source strength required at the time of implant to meet the surgical schedule. The inventory strength will be automatically updated and its assay date will be set to the time of implant.
Plaque Simulator pulls sources from an inventory entry using the average strength of the sources (e.g. the manufacturing lot #) associated with that inventory entry. In the Radionuclide control group of Basic Preferences you can choose to default entering source strength as either the average, or as the minimum and maximum of a manufacturing lot and the average will be calculated for you as a convenience. You can override that preference setting here.
Note: in this calendar example November 1st is highlighted to indicate a clock change due to the conclusion of daylight saving time (DST) for locales that observe DST.
The sources in a plaque are snapshots of the state of an inventory entry at the moment the source was pulled from inventory and moved into the plaque.
Note: Editing an inventory entry does NOT automatically propagate any changes to the sources in a plaque. If you edit an inventory entry (e.g. change its calibration) and any of the (up to 4) plaques currently under consideration for the current patient contain sources pulled from that inventory entry, you will be alerted when you close the inventory editor sheet and offered a one time opportunity to update the sources in the plaque(s) to match the current state of the inventory from which they were pulled.
Note: You will also NOT be alerted to update plaques containing this inventory entry that may be associated with another (e.g. prior) patient. In general, there is no need to edit the inventory settings of a prior patient. The rare exception would be if sources were manufactured and delivered with the wrong strength or calibration date and you need to recalculate dosimetry based on what was actually delivered. In such a case, to update the plaque(s) of a prior patient you must manually load that patient, select the inventory of interest, edit the inventory entry, update the plaque, and recalculate dosimetry.
In the example below, Plaque #1 contains 13 sources that were pulled from inventory ID 623613775 with 2 mCi strength at the time of calibration. If you were to subsequently edit that inventory entry and change the strength from 2 mCi to 1 mCi (or perhaps change the calibration date), you would be presented this alert offering to update all of the sources in the plaque that had been pulled from inventory ID 623613775.