/*Public Function GetImplantActivity(strIsotope As String, vAssayActivity As Variant, vAssayDate As Variant) As Variant
* Dim dImplantDate As Date
* GetImplantActivity = Null
* If IsNumeric(vAssayActivity) Then
* If IsDate(vAssayDate) Then
* If objPatient.ImplantDate <> vbNullString Then
* dImplantDate = objPatient.ImplantDate
* If dImplantDate <> MISSING_DATE Then
* Select Case strIsotope
* Case "Iodine", "I-125", "I125"
* 'half-life
* GetImplantActivity = CSng(vAssayActivity) * 0.5 ^ ((dImplantDate - CDate(vAssayDate)) / 59.4)
* Case "Palladium", "Pd-103", "Pd103"
* GetImplantActivity = CSng(vAssayActivity) * 0.5 ^ ((dImplantDate - CDate(vAssayDate)) / 16.97)
* End Select
* End If
* End If
* End If
* End If
* Exit_Procedure:
* Exit Function*/
/// <summary>
///
/// If this is too slow/performance hit, then move function to back end.
/// </summary>
/// <param name="isotope"></param>
/// <param name="assayActivity"></param>
/// <param name="assayDate"></param>
/// <returns></returns>
public static object GetCurrentActivity(string isotope, string assayActivity, string assayDate)
{
object currentActivity = System.DBNull.Value;
if (PageUtil.IsInteger(assayActivity) || PageUtil.IsDecimal(assayActivity))
{
if (PageUtil.IsDate(assayDate))
{
DateTime d1, d2;
d1 = System.DateTime.Now;
d2 = Convert.ToDateTime(assayDate);
TimeSpan ts = d1 - d2;
int days = ts.Days;
//GetCurrentActivity = sngAssayActivity * 0.5 ^ ((Date - dAssayDate) / 59.4)
if (isotope.Equals("Iodine") || isotope.Equals("I-125") || isotope.Equals("I125"))
{
double Itotal = Convert.ToDouble(assayActivity) * (Math.Pow(0.5, (days / 59.4)));
currentActivity = Math.Round(Itotal, 6).ToString(); // could remove this to store full value in db and round to six places on output
}
else if (isotope.Equals("Palladium") || isotope.Equals("Pd-103") || isotope.Equals("Pd103"))
{
double Ptotal = Convert.ToDouble(assayActivity) * (Math.Pow(0.5, (days / 16.97)));
currentActivity = Math.Round(Ptotal, 6).ToString();
}
}
}
return(currentActivity);
}
/* 'actual seeds assigned to patient
* If IsNumeric(txtSeedStrength) Then
* If IsNumeric(txtNumSeeds) Then
* txtTotalActivity = CSng(txtNumSeeds) * CSng(txtSeedStrength)
* blnDosimetrySaved = False
* Else
* blnComplete = False
* End If
* 'reccommended activity calculated above
* 'see if actual is greater than recommended, should be about 100-110%
* If IsNumeric(txtRecTotActivity) Then
* If IsNumeric(txtTotalActivity) And CSng(txtRecTotActivity) > 0 Then
* txtPercentActivity = CSng(txtTotalActivity) / CSng(txtRecTotActivity)
* blnDosimetrySaved = False
* Else
* blnComplete = False
* End If
* Else
* blnComplete = False
* End If
* Else
* blnComplete = False
* End If
*/
/// <summary>
///
/// </summary>
/// <param name="isotope"></param>
/// <param name="assayActivity"></param>
/// <param name="assayDate"></param>
/// <param name="implantDate"></param>
/// <returns></returns>
public static string GetImplantActivity(string isotope, string assayActivity, string assayDate, string implantDate)
{
string implantActivity = "";
if (PageUtil.IsInteger(assayActivity) || PageUtil.IsDecimal(assayActivity))
{
if (PageUtil.IsDate(assayDate) && PageUtil.IsDate(implantDate))
{
DateTime d1, d2;
d1 = Convert.ToDateTime(implantDate); //implant date comes from BrachyDate field in Brachy table
d2 = Convert.ToDateTime(assayDate);
TimeSpan ts = d1 - d2;
int days = ts.Days;
//GetCurrentActivity = sngAssayActivity * 0.5 ^ ((Date - dAssayDate) / 59.4)
if (isotope.Equals("Iodine") || isotope.Equals("I-125") || isotope.Equals("I125"))
{
double Itotal = Convert.ToDouble(assayActivity) * (Math.Pow(0.5, (days / 59.4)));
implantActivity = Math.Round(Itotal, 6).ToString(); // could remove this to store full value in db and round to six places on output
}
else if (isotope.Equals("Palladium") || isotope.Equals("Pd-103") || isotope.Equals("Pd103"))
{
double Ptotal = Convert.ToDouble(assayActivity) * (Math.Pow(0.5, (days / 16.97)));
implantActivity = Math.Round(Ptotal, 6).ToString();
}
}
}
return(implantActivity);
}
/// <summary>
/// Calculate percent of recommened activity = Total Seed Activity / (Recommended Total Activity + 10%)
/// </summary>
/// <param name="totActivity"></param>
/// <param name="recTotActivity"></param>
/// <returns></returns>
public static string CalcPercentActivity(string totActivity, string recTotActivity)
{
double percentActivity = 0;
if (PageUtil.IsDecimal(totActivity) && (PageUtil.IsDecimal(recTotActivity) && double.Parse(recTotActivity) != 0))
{
percentActivity = double.Parse(totActivity) / double.Parse(recTotActivity); // X 10%?
}
percentActivity = RoundFloat(percentActivity) * 100;
return(percentActivity.ToString());
}
public static string CalcTotActivity(string numSeeds, string seedStrength)
{
double totActivity = 0;
if (PageUtil.IsDecimal(numSeeds) && PageUtil.IsDecimal(seedStrength))
{
totActivity = int.Parse(numSeeds) * double.Parse(seedStrength);
}
//totActivity = Math.Round((totActivity * 100), PhysicsUtil.SignificantDigits);
totActivity = RoundFloat(totActivity);
return(totActivity.ToString());
}
/*
* 'calculate RecTotActivity
* 'check to be sure all numbers are present for calculating
* If Not IsNull(txtIsotope) And IsNumeric(txtPrescribedDose) And IsNumeric(txtAvgDimension) Then
* Select Case txtIsotope
* Case "Palladium"
* 'if we can ever figure out what these magic numbers mean, they
* 'should go into the config table!!!
* If CSng(txtAvgDimension) < CSng(3) Then
* x = 17.8 * CSng(txtAvgDimension)
* Else
* x = 3.2 * (CSng(txtAvgDimension) ^ 2.56)
* End If
* sngRecTotActivity = 1.686 * x * CSng(txtPrescribedDose) / 140 * 1.1 'changed 3/23/2000
*
* Case "Iodine"
* If CSng(txtAvgDimension) < 3 Then
* x = 5 * CSng(txtAvgDimension)
* Else
* x = 1.338 * (CSng(txtAvgDimension) ^ 2.2)
* End If
* sngRecTotActivity = 0.897 * 1.27 * x * CSng(txtPrescribedDose) / 144 * 1.1
*
* End Select
* txtRecTotActivity = sngRecTotActivity
* blnDosimetrySaved = False
* cmdPrintDosimetry.SetFocus 'prevent error in next line
* cmdSaveDosimetry.Enabled = True
* ElseIf Not blnPrePlan Then
* blnComplete = False
* End If
*/
public static string CalcRecTotActivity(string isotope, string prescribedDose, string avgDimension)
{
double recTotActivity = 0;
if (PageUtil.IsDecimal(prescribedDose) && PageUtil.IsDecimal(avgDimension))
{
double x;
if (isotope.Equals("Palladium"))
{
if (double.Parse(avgDimension) < 3)
{
x = 17.8 * double.Parse(avgDimension);
}
else
{
x = 3.2 * (Math.Pow(double.Parse(avgDimension), 2.56));
}
recTotActivity = 1.686 * x * double.Parse(prescribedDose) / 140 * 1.1;
}
else if (isotope.Equals("Iodine"))
{
if (double.Parse(avgDimension) < 3)
{
x = 5 * double.Parse(avgDimension);
}
else
{
x = 1.388 * Math.Pow(double.Parse(avgDimension), 2.2);
}
recTotActivity = 0.987 * 1.27 * x * double.Parse(prescribedDose) / 144 * 1.1;
}
}
recTotActivity = RoundFloat(recTotActivity);
return(recTotActivity.ToString());
}
