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[8406bc]: / MATLAB / analysis / analyzePhantom.m

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%ANALYZEPHANTOM analyzes the surface model of the VSD phantom.

%

% AUTHOR: Maximilian C. M. Fischer

% COPYRIGHT (C) 2023 Maximilian C. M. Fischer

% LICENSE: EUPL v1.2

%



clearvars; close all



addpath(genpath('..\src'))

VSD_addPathes('..\..\..\..\..\')



%% Settings

dicomDBpath = 'D:\sciebo\SMIR\VSDFullBodyBoneReconstruction';

phantomXLSX = '..\res\VSD_Phantom.xlsx';



visualizeSubjects = 1;



% Load phantom

phantom = readtable(phantomXLSX);



%% Import

patchProps.FaceAlpha = 0.3;

load(['..\..\Bones\' phantom.ID{1} '.mat'], 'B')

phantomMesh = B(1).mesh;

visualizeMeshes(phantomMesh,patchProps)

anatomicalViewButtons('ASR')

set(gcf,'Name',['VSD phantom: ' phantom.ID{1}],'NumberTitle','off')



phantomAreaFile = '..\res\VSD_PhantomAnnotations.mat';



if exist(phantomAreaFile, 'file')

    load(phantomAreaFile,'areas','points')

else

    areas = {...

        'LV_Body'; 'LV_SuperiorEndPlate'; 'LV_InferiorEndPlate'; 'LV_RightSpinProcess'; 'LV_LeftSpinProcess';...

        'MV_Body'; 'MV_SuperiorEndPlate'; 'MV_InferiorEndPlate'; 'MV_RightSpinProcess'; 'MV_LeftSpinProcess';...

        'HV_Body'; 'HV_SuperiorEndPlate'; 'HV_InferiorEndPlate'; 'HV_RightSpinProcess'; 'HV_LeftSpinProcess';...

        'PostArch'; 'LV_AntArch'; 'MV_AntArch'; 'HV_AntArch';...

        'LV_SpinProcessBase'; 'MV_SpinProcessBase'; 'HV_SpinProcessBase'};

    points = {'LV_SpinProcess'; 'MV_SpinProcess'; 'HV_SpinProcess'};

end



%% Define areas

% areas = selectFaces(phantomMesh, areas);

% save(phantomAreaFile,'areas','points')

% 

% % Define points

% points = selectLandmarks(phantomMesh, points);

% save(phantomAreaFile,'areas','points')



%% Analyze areas

pointProps.Marker = 'o';

pointProps.MarkerSize = 8;

pointProps.MarkerEdgeColor = 'k';

pointProps.MarkerFaceColor = 'k';



resTable{1,1} = 'Body diameter';

resTable{2,1} = 'Arch diameter';

resTable{3,1} = 'Body height';

resTable{4,1} = 'Arch thickness';

resTable{5,1} = 'Spinous process thickness';

resTable{6,1} = 'Spinous process length';



resTableRef = resTable;

resTableRef{1,2} = 36; resTableRef{1,3} = 36; resTableRef{1,4} = 36;

resTableRef{2,2} = 28; resTableRef{2,3} = 28; resTableRef{2,4} = 28;

resTableRef{3,2} = 25; resTableRef{3,3} = 25; resTableRef{3,4} = 25;

resTableRef{4,2} = 5.2; resTableRef{4,3} = 6.0; resTableRef{4,4} = 7.0;

resTableRef{5,2} = 6.0; resTableRef{5,3} = 8.0; resTableRef{5,4} = 10.0;

resTableRef{6,2} = 11.7; resTableRef{6,3} = 14.6; resTableRef{6,4} = 21.0;



[PostArchVerts, ~] = removeMeshFaces(phantomMesh, ~areas{strcmp(areas(:,1),'PostArch'),2});

PostArchCyl=cylindricalFit(PostArchVerts');

ArchDia = PostArchCyl.radius*2;

drawCylinder(cylindricalFitToCylinder(PostArchCyl), 128, 'FaceColor','g', 'FaceAlpha',0.5)



resTable{2,2} = ArchDia; resTable{2,3} = ArchDia; resTable{2,4} = ArchDia;



disp('--- Low Vertebra ---')

% Body diameter

[LV_BodyVerts, ~] = removeMeshFaces(phantomMesh, ~areas{strcmp(areas(:,1),'LV_Body'),2});

LV_BodyCyl = cylindricalFit(LV_BodyVerts');

drawCylinder(cylindricalFitToCylinder(LV_BodyCyl), 128, 'FaceColor','r', 'FaceAlpha',0.5)

resTable{1,2} = LV_BodyCyl.radius*2;



% Body height

[LV_SuperiorEndPlateVertices, ~] = removeMeshFaces(phantomMesh, ~areas{strcmp(areas(:,1),'LV_SuperiorEndPlate'),2});

LV_SuperiorEndPlane = fitPlane(LV_SuperiorEndPlateVertices);

[LV_InferiorEndPlateVertices, ~] = removeMeshFaces(phantomMesh, ~areas{strcmp(areas(:,1),'LV_InferiorEndPlate'),2});

LV_InferiorEndPlane = fitPlane(LV_InferiorEndPlateVertices);

drawPlatform(LV_SuperiorEndPlane, 36);

drawPlatform(LV_InferiorEndPlane, 36);

resTable{3,2} = abs(LV_InferiorEndPlane(2)-LV_SuperiorEndPlane(2));



% Arch thickness

[LV_AntArchVerts, ~] = removeMeshFaces(phantomMesh, ~areas{strcmp(areas(:,1),'LV_AntArch'),2});

LV_AntArchCyl = cylindricalFit(LV_AntArchVerts');

drawCylinder(cylindricalFitToCylinder(LV_AntArchCyl), 128, 'FaceColor','b', 'FaceAlpha',1)

resTable{4,2} = PostArchCyl.radius-LV_AntArchCyl.radius;



% Spinous process thickness

[LV_RightSpinProcess, ~] = removeMeshFaces(phantomMesh, ~areas{strcmp(areas(:,1),'LV_RightSpinProcess'),2});

LV_RightSpinPlane = fitPlane(LV_RightSpinProcess);

[LV_LeftSpinProcess, ~] = removeMeshFaces(phantomMesh, ~areas{strcmp(areas(:,1),'LV_LeftSpinProcess'),2});

LV_LeftSpinPlane = fitPlane(LV_LeftSpinProcess);

resTable{5,2} = abs(LV_LeftSpinPlane(3)-LV_RightSpinPlane(3));



% Spinous process length

[LV_SpinProcessBaseVerts, ~] = removeMeshFaces(phantomMesh, ~areas{strcmp(areas(:,1),'LV_SpinProcessBase'),2});

LV_SpinProcessBase = fitPlane(LV_SpinProcessBaseVerts);

LV_SpinProcess = points{strcmp(points(:,1),'LV_SpinProcess'),2};

LV_SpinProcessProj = projPointOnPlane(LV_SpinProcess, LV_SpinProcessBase);

drawEdge([LV_SpinProcess, LV_SpinProcessProj], 'Color', 'k', pointProps, 'LineWidth',2)

drawPlatform(LV_SpinProcessBase, 10);

resTable{6,2} = distancePoints3d(LV_SpinProcess, LV_SpinProcessProj);



disp('--- Medium Vertebra ---')

% Body diameter

[MV_BodyVerts, ~] = removeMeshFaces(phantomMesh, ~areas{strcmp(areas(:,1),'MV_Body'),2});

MV_BodyCyl = cylindricalFit(MV_BodyVerts');

drawCylinder(cylindricalFitToCylinder(MV_BodyCyl), 128, 'FaceColor','r', 'FaceAlpha',0.5)

resTable{1,3} = MV_BodyCyl.radius*2;



% Body height

[MV_SuperiorEndPlateVertices, ~] = removeMeshFaces(phantomMesh, ~areas{strcmp(areas(:,1),'MV_SuperiorEndPlate'),2});

MV_SuperiorEndPlane = fitPlane(MV_SuperiorEndPlateVertices);

[MV_InferiorEndPlateVertices, ~] = removeMeshFaces(phantomMesh, ~areas{strcmp(areas(:,1),'MV_InferiorEndPlate'),2});

MV_InferiorEndPlane = fitPlane(MV_InferiorEndPlateVertices);

drawPlatform(MV_SuperiorEndPlane, 36);

drawPlatform(MV_InferiorEndPlane, 36);

resTable{3,3} = abs(MV_InferiorEndPlane(2)-MV_SuperiorEndPlane(2));



% Arch thickness

[MV_AntArchVerts, ~] = removeMeshFaces(phantomMesh, ~areas{strcmp(areas(:,1),'MV_AntArch'),2});

MV_AntArchCyl = cylindricalFit(MV_AntArchVerts');

drawCylinder(cylindricalFitToCylinder(MV_AntArchCyl), 128, 'FaceColor','b', 'FaceAlpha',1)

resTable{4,3} = PostArchCyl.radius-MV_AntArchCyl.radius;



% Spinous process thickness

[MV_RightSpinProcess, ~] = removeMeshFaces(phantomMesh, ~areas{strcmp(areas(:,1),'MV_RightSpinProcess'),2});

MV_RightSpinPlane = fitPlane(MV_RightSpinProcess);

[MV_LeftSpinProcess, ~] = removeMeshFaces(phantomMesh, ~areas{strcmp(areas(:,1),'MV_LeftSpinProcess'),2});

MV_LeftSpinPlane = fitPlane(MV_LeftSpinProcess);

resTable{5,3} = abs(MV_LeftSpinPlane(3)-MV_RightSpinPlane(3));



% Spinous process length

MV_SpinProcess = points{strcmp(points(:,1),'MV_SpinProcess'),2};

[MV_SpinProcessBaseVerts, ~] = removeMeshFaces(phantomMesh, ~areas{strcmp(areas(:,1),'MV_SpinProcessBase'),2});

MV_SpinProcessBase = fitPlane(MV_SpinProcessBaseVerts);

MV_SpinProcessProj = projPointOnPlane(MV_SpinProcess, MV_SpinProcessBase);

drawEdge([MV_SpinProcess, MV_SpinProcessProj], 'Color', 'k', pointProps, 'LineWidth',2)

drawPlatform(MV_SpinProcessBase, 10);

resTable{6,3} = distancePoints3d(MV_SpinProcess, MV_SpinProcessProj);



disp('--- High Vertebra ---')

% Body diameter

[HV_BodyVerts, ~] = removeMeshFaces(phantomMesh, ~areas{strcmp(areas(:,1),'HV_Body'),2});

HV_BodyCyl = cylindricalFit(HV_BodyVerts');

drawCylinder(cylindricalFitToCylinder(HV_BodyCyl), 128, 'FaceColor','r', 'FaceAlpha',0.5)

resTable{1,4} = HV_BodyCyl.radius*2;



% Body height

[HV_SuperiorEndPlateVertices, ~] = removeMeshFaces(phantomMesh, ~areas{strcmp(areas(:,1),'HV_SuperiorEndPlate'),2});

HV_SuperiorEndPlane = fitPlane(HV_SuperiorEndPlateVertices);

[HV_InferiorEndPlateVertices, ~] = removeMeshFaces(phantomMesh, ~areas{strcmp(areas(:,1),'HV_InferiorEndPlate'),2});

HV_InferiorEndPlane = fitPlane(HV_InferiorEndPlateVertices);

drawPlatform(HV_SuperiorEndPlane, 36);

drawPlatform(HV_InferiorEndPlane, 36);

resTable{3,4} = abs(HV_InferiorEndPlane(2)-HV_SuperiorEndPlane(2));



% Arch thickness

[HV_AntArchVerts, ~] = removeMeshFaces(phantomMesh, ~areas{strcmp(areas(:,1),'HV_AntArch'),2});

HV_AntArchCyl=cylindricalFit(HV_AntArchVerts');

drawCylinder(cylindricalFitToCylinder(HV_AntArchCyl), 128, 'FaceColor','b', 'FaceAlpha',1)

resTable{4,4} = PostArchCyl.radius-HV_AntArchCyl.radius;



% Spinous process thickness

[HV_RightSpinProcess, ~] = removeMeshFaces(phantomMesh, ~areas{strcmp(areas(:,1),'HV_RightSpinProcess'),2});

HV_RightSpinPlane = fitPlane(HV_RightSpinProcess);

[HV_LeftSpinProcess, ~] = removeMeshFaces(phantomMesh, ~areas{strcmp(areas(:,1),'HV_LeftSpinProcess'),2});

HV_LeftSpinPlane = fitPlane(HV_LeftSpinProcess);

resTable{5,4} = abs(HV_LeftSpinPlane(3)-HV_RightSpinPlane(3));



% Spinous process length

HV_SpinProcess = points{strcmp(points(:,1),'HV_SpinProcess'),2};

[HV_SpinProcessBaseVerts, ~] = removeMeshFaces(phantomMesh, ~areas{strcmp(areas(:,1),'HV_SpinProcessBase'),2});

HV_SpinProcessBase = fitPlane(HV_SpinProcessBaseVerts);

HV_SpinProcessProj = projPointOnPlane(HV_SpinProcess, HV_SpinProcessBase);

drawEdge([HV_SpinProcess, HV_SpinProcessProj], 'Color', 'k', pointProps, 'LineWidth',2)

drawPlatform(HV_SpinProcessBase, 10);

resTable{6,4} = distancePoints3d(HV_SpinProcess, HV_SpinProcessProj);



grid off; axis off



% Error

errorsCell = cellfun(@(x,y) x-y, resTable(:,2:4), resTableRef(:,2:4), 'UniformOutput', false);

errors = cell2mat(errorsCell);

errors = unique(errors(:));

disp(['Mean error: ' num2str(mean(errors), 1) ' ' char(177) ' ' num2str(std(errors), 1)])

disp(['Mean absolute error: ' num2str(mean(abs(errors)), 1) ' ' char(177) ' ' num2str(std(abs(errors)), 1)])



writecell([resTable, resTableRef(:,2:4), errorsCell], 'phantomResults.xlsx', 'Sheet','Phantom', 'Range','B5')



% [List.f, List.p] = matlab.codetools.requiredFilesAndProducts([mfilename '.m']);

% List.f = List.f'; List.p = List.p';



%% Helper functions

function [cylinder, cylLine] = cylindricalFitToCylinder(cylFit)



cylTfm = eulerAnglesToRotation3d(cylFit.yaw, cylFit.pitch, cylFit.roll);

cylVector = transformVector3d([1 0 0], cylTfm);

cylLine = [cylFit.center cylVector];

cylPoints = transformPoint3d(cylFit.XYZ', cylTfm');

[~, minIdx] = min(cylPoints(:,1));

[~, maxIdx] = max(cylPoints(:,1)); 

minPtProj = projPointOnLine3d(cylFit.XYZ(:,minIdx)', cylLine);

maxPtProj = projPointOnLine3d(cylFit.XYZ(:,maxIdx)', cylLine);

cylinder = [minPtProj, maxPtProj, cylFit.radius];



end