To edit an inventory entry, first select the entry in the table of database entries (Note: this screen capture has been anonymized, the entry highlighted in blue is named "Tutorial").
After selecting an entry to edit, click the Edit button (or double-click a row in the table) to open the inventory editor sheet.
An inventory editor sheet will open. If you create the inventory as part of the recommended workflow related to preparing a treatment plan it should already be 'primed' for the appropriate (or default) physics file, patient name, total number of source placeholders N in the current plaque selection and the calibration assay date preset according to the plan's current surgical schedule settings. Buttons are also provided in this sheet as a convenience to simplify updating the inventory to the current plan parameters. This can be useful if the inventory was originally initialized for a different patient or treament schedule and you want to reuse the seeds at a later date in another plaque.
Note: in this calendar example March 10th is highlighted to indicate a clock change due to the beginning of daylight saving time (DST) for locales that observe DST. Notable USA holidays are indicated using red text.
For example, below (in red text) are individualized assay results for two lots of seeds from IsoAid with a total count of 17 seeds between the two lots. The two lots represent a pair source strengths intended for an intensity modulated plaque that holds 17 seeds. What follows is an example of creating an absolute source inventory for lot #202387393 which consists of eleven seeds.
Below, a new inventory was created via the Inventory window and then selected for editing. This inventory was automatically assigned the database ID 2A85EA5F based on its date and time of creation. The physics file was automatically set for IsoAid IAI-125 seeds based on PS preference settings. You could override the physics file here if necessary. The value #202387393 has been entered as the manufacturing (Mfg.) lot number. Tutorial has been entered as the inventory name. The default for the inventory name is the patient name. Entering a comment describing the inventory is optional.
The calibration assay date was automatically set to the plan's proposed treatment date of 10/18/2023. You could override the calibration here if necessary. Because these seeds already exist, the calibration assay date has been locked to prevent accidentally changing the assay date by calculating source strengths in the Implant Calculator window. The total number of seeds was automatically set to 17 seeds based on the number of seeds in the plaque and then manually overriden to 11 seeds to properly represent this particular lot.
The source strength mode was changed to Absolute strengths. This enables selection and editing of the S[N] table located in the Set of source strengths S[N] control group. The eleven measured strengths were then entered in the table. To begin data entry, select source N=1 by clicking the mouse cursor in its row. Press the enter key to begin editing. Be sure to press the return key to actually accept the value typed into the editable text field. Upon hitting the return key, the typed strength value will be accepted, the histogram updated, and the editable text field should automatically advance to the next table entry. Note: after entering the last strength (e.g. 11th in this example), the editable text field will loop back to the first table entry. If all the entered values look correct, proceed to lock the inventory source strengths.
Below, in the Radionuclide control group, the set of plaques has been expanded so that these sources can be used with plaques 1, 2 and 3 without generating an inventory mismatch warning.
In the Source strength mode control group, the mode has been locked to prevent accidentally changing the mode to Averaging or Min & Max which would automatically recalulate the set of source strengths S[N] based on the averaging and uncertainty settings. The randomize checkbox control determines how the set S[N] will be pulled from the inventory, either randomly or sequentially. Pulling seeds randomly is probably more representative of an actual preloaded plaque. Pulling sequentially allows you to precisely control which seed strength goes where in the plaque when manually loading seeds one-at-a-time by clicking on source placeholders in the Plaque window. A prospective 'next-available' source strength to be pulled from S[N] is listed in the Plaque window inventory status line. This 'next' value shown in the plaque status line will be correct if the inventory mode is averaging or if loading is performed sequentially for the absolute modes.
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.
Beginning with version 6.9.4 snapshots of all inventories used in a plan are also saved as part of the .iPlan6 treatment file package and can be used to completely regenerate missing source inventories at a later date or alternative planning location.
Note: Editing an inventory entry does NOT automatically propagate changes to the sources already in a plaque. If you edit an inventory entry (e.g. change its calibration or source strength mode) and any of the (up to 4) plaques currently under consideration in the current plan 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 eleven 1 mCi sources that were pulled from inventory ID 2A831344. At the time the sources were pulled that inventory was set for source strength averaging mode with an average strength of 1 mCi at the time of calibration. If you were to subsequently edit that inventory entry and change the strength from 1 mCi to 4 mCi (or change the calibration date), you would be presented an alert offering to update all of the 1 mCi sources in the plaque from inventory ID 2A831344 to the current average strength of 4 mCi.