RESEARCH ON KNEE SPORTS INJURY CLASSIFICATION BASED ON MEDICAL IMAGES AND KWON3D SOFTWARE

Liu, Nai; Liu, Bichuan

doi:10.1590/1517-8692202127042021_0099

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Revista Brasileira de Medicina do Esporte

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Original Article • Rev Bras Med Esporte 27 (5) • 2021 • https://doi.org/10.1590/1517-8692202127042021_0099 copy

RESEARCH ON KNEE SPORTS INJURY CLASSIFICATION BASED ON MEDICAL IMAGES AND KWON3D SOFTWARE

PESQUISA SOBRE CLASSIFICAÇÃO DE LESÕES ESPORTIVAS NO JOELHO COM BASE EM IMAGENS MÉDICAS E SOFTWARE KWON3D

INVESTIGACIÓN SOBRE CLASIFICACIÓN DE LESIONES DEPORTIVAS DE RODILLA BASADA EN IMÁGENES MÉDICAS Y SOFTWARE KWON3D

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

Introduction:

The integrity of articular cartilage determines the functional state of the joint. In recent years, the development of MRI sequences of various articular cartilage has become the focus of many research topics.

Objective:

The accuracy of diagnosis of knee cartilage injury caused by motion injury was studied retrospectively by meta-three-dimensional software.

Methods:

Forty-six knee joints of 45 patients with sports injuries, multi-sequence MRI was performed before surgery, including conventional knee MRI (SET1WI, FSEPD/T2WI), 3D SPGR, and 3D FIESTA sequences.

Results:

According to the operation results, the sensitivity, specificity, positive predictive value, and negative predictive value of 3D SPGR combined with conventional MRI sequence evaluation of cartilage damage are the highest, 73%, 98%, 95%, and 90%.

Conclusions:

3D SPGR combined with conventional MRI sequences can improve accurate evaluation and diagnosis of cartilage disease over a reasonable scan time. Level of evidence II; Therapeutic studies - investigation of treatment results.

Keywords:
Wounds and injuries; Knee; Diagnostic imaging

MRI classification	Surgery					Total
3D-SPGR	Level 0	Level 1	Level 2	Level 3	Level 4	Total
Level 0	84^* * Means that the surgical grade is entirely consistent with the MRI grade.	8	13	0	0	105
Level 1	42	32^* * Means that the surgical grade is entirely consistent with the MRI grade.	10	1	0	85
level 2	31	14	22^* * Means that the surgical grade is entirely consistent with the MRI grade.	2	1	70
Level 3	1	1	2	3^* * Means that the surgical grade is entirely consistent with the MRI grade.	2	9
level 4	0	0	0	1	6^* * Means that the surgical grade is entirely consistent with the MRI grade.	7
total	158	55	47	7	9	276
3D-FIESTA
Level 0	79^* * Means that the surgical grade is entirely consistent with the MRI grade.	2	7	0	0	88
Level 1	46	47^* * Means that the surgical grade is entirely consistent with the MRI grade.	12	1	0	106
level 2	33	5	27^* * Means that the surgical grade is entirely consistent with the MRI grade.	2	0	67
Level 3	0	1	1	4^* * Means that the surgical grade is entirely consistent with the MRI grade.	0	6
level 4	0	0	0	0	9^* * Means that the surgical grade is entirely consistent with the MRI grade.	9
total	158	55	47	7	9	276
3D-SPGR combined with conventional MRI
Level 0	141^* * Means that the surgical grade is entirely consistent with the MRI grade.	5	2	0	0	148
Level 1	14	41^* * Means that the surgical grade is entirely consistent with the MRI grade.	8	0	0	63
level 2	3	9	37^* * Means that the surgical grade is entirely consistent with the MRI grade.	0	0	49
Level 3	0	0	0	7^* * Means that the surgical grade is entirely consistent with the MRI grade.	0	7
level 4	0	0	0	0	9^* * Means that the surgical grade is entirely consistent with the MRI grade.	9

Sequence	True positive ^* * The data in the table represents the number of cartilage articular surface classification statistics.	False-positive^* * The data in the table represents the number of cartilage articular surface classification statistics.	True negative^* * The data in the table represents the number of cartilage articular surface classification statistics.	False-negative^* * The data in the table represents the number of cartilage articular surface classification statistics.	Sensitivity (%) ^★ ★ The data in brackets represent the 95% confidence interval.	Specificity (%) ^★ ★ The data in brackets represent the 95% confidence interval.	Accuracy (%)
3D-SPGR
LFC	11	5	23	7	61(55,78)	82(74,92)	74
MFC	13	5	24	4	76(68,89)	83(72,95)	80
LTP	8	3	30	5	62(54,76)	91(86,95)	83
MTP	10	3	30	3	77(65,88)	91(85,97)	87
Trochlea	8	3	32	3	73(62,89)	91(87,97)	87
Patela	13	4	21	8	62(57,80)	84(78,94)	74
total	63	23	160	30	68(54,77)	87(79,96)	81
3D-FIESTA
LFC	10	1	24	11	48(29,56)	96(84,98)	74
MFC	12	1	21	12	50(41,66)	95(76,97)	72
LTP	8	5	26	7	53(42,68)	84(71,92)	74
MTP	10	5	24	7	59(44,70)	83(74,90)	74
Trochlea	8	5	26	7	53(38,67)	84(75,92)	74
Patela	13	4	22	7	65(49,74)	85(79,91)	76
total	61	21	143	51	54(43,68)	87(77,94)	74
3D-SPGR combined with conventional MRI
LFC	9	0	33	4	69(51,78)	100(76,100)	91
MFC	13	1	29	3	81(70,91)	97(81,99)	91
LTP	5	0	38	3	63(54,77)	100(77,100)	93
MTP	9	0	32	5	64(56,78)	100(74,100)	89
Trochlea	8	1	36	1	89(74,95)	97(84,99)	96
Patela	13	1	27	5	72(69,88)	96(78,98)	87
total	57	3	195	21	73(64,89)	98(79,99)	91

MRI sequence	3D-SPGR	3D-FIESTA	3D-SPGR combined with conventional MRI
True positive	63	61	57
False positive	23	21	3
True negative	160	143	195
False negative	30	51	21
Positive predictive value (%)	73(63/86)	74(61/82)	95(57/60)
Negative predictive value (%)	84(160/190)	74(143/194)	90(195/216)
Sensitivity (%)	68(63/93)	54(61/112)	73(57/78)
Specificity (%)	87(160/183)	87(143/164)	98(195/198)

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[1] Correspondence: Physical Education Department of Jiangxi University of traditional Chinese Medicine, Nanchang 330000, China. liubichuanbcl@yeah.net