Create margin for structure

[Kundan Singh Chufal]

Is it possible to create margin along the given structure and save it as a new file.
I am using this script

dirPath = uigetdir(cd, 'Select directory with CERR formated file');

saveDirPath = uigetdir(cd, 'Select directory to save output file');

%Find all CERR files
fileC = {};
if strcmpi(dirPath,'\') || strcmpi(dirPath,'/')
filesTmp = getCERRfiles(dirPath(1:end-1));
else
filesTmp = getCERRfiles(dirPath);
end
fileC = [fileC filesTmp];

filesNotConvertedC = {};

for iFile = 1:length(fileC)

drawnow

try
planC = loadPlanC(fileC{iFile},tempdir);
planC = updatePlanFields(planC);
planC = quality_assure_planC(fileC{iFile}, planC);
indexS = planC{end};
rastersegs1 = planC{indexS.structures}(1).rasterSegments;
catch
continue
end
gtv_margin = structMargin(rastersegs1, 0.5, 1, planC);
end

It does have the values of newly created structure as gtv_margin(I presume)
but how to copy this object as an structure to the scan and save it as a new scan.
Is it possible to do this as an batch process?

[ap...@mskcc.org]

Hi Kundan,

Here is code sample to create "ring" structure:

%% ---------- code sample begin
structNum = 1; % define structure number

numStructs = length(planC{indexS.structures});

% Expand the test structure by amount equal to the devMargin
planC = createExpandedStructure(structNum, devMargin, planC);
expandedStructNum = numStructs + 1;

% Contract the test structure by amount equal to the devMargin
planC = createExpandedStructure(structNum, -devMargin, planC);
contracttructNum = numStructs + 2;

% Create a structure that's equal to the excess test volume
planC = createDifferenceStructure(contracttructNum,expandedStructNum, planC);
ringStructNum = numStructs + 3;

% save planC to file
planC = save_planC(planC,[],'passed', fileC{iFile});

%% ---------- code sample end

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[Kundan Singh Chufal]

thanks a lot