Radiomics analysis using MR imaging of subchondral bone for identification of knee osteoarthritis

Table 3 Pearson’s correlation coefficients between radiomics features and trabecular bone parameters in four regions

ROI	Filter	Feature	Tb.Th	Tb.Sp	BV/TV	TbN
LF	original	glcm_Imc1	0.420**	0.006	−0.386**	0.146
MF	original	glcm_Imc1	− 0.412**	0.151	− 0.473**	0.015
	original	gldm_DependenceVariance	0.245*	−0.589**	0.665**	0.418**
	LoG(σ1.0 mm)	glrlm_RunVariance	0.131	−0.453**	0.463**	0.342**
LT	original	gldm_DependenceVariance	0.557**	−0.140	0.722**	−0.132
	original	glrlm_LongRunHighGrayLevelEmphasis	0.669**	0.324**	0.519**	−0.517
	LoG(σ1.0 mm)	firstorder_Mean	−0.577**	−0.429**	−0.342**	0.553**
MT	original	glcm_MaximumProbability	0.370**	−0.537**	0.712**	0.292**
	original	gldm_DependenceVariance	0.463**	− 0.524**	0.789**	0.243*
	original	gldm_LargeDependenceHighGrayLevelEmphasis	0.671**	0.049	0.585**	−0.312**
	original	glszm_SmallAreaLowGrayLevelEmphasis	0.171	−0.376**	0.421**	0.236*
	LoG(σ1.0 mm)	firstorder_Median	− 0.584**	− 0.219*	−0.390**	0.415**
	LoG(σ1.5 mm)	firstorder_Median	− 0.489**	− 0.273**	−0.268*	0.421**

LF Lateral femoral condyle, MF Medial femoral condyle, LT Lateral tibial plateau, MT Medial tibial plateau. Significant correlations are highlighted with asterisks (* or **). *P < 0.05; **P < 0.01

ISSN: 1749-799X