<sup>99m</sup>Tc-MIBI SPECT/CT结合CT影像学特征在原发性甲状旁腺疾病中的价值

赵宇嘉; 白侠

doi:10.12122/j.issn.1674-4500.2023.06.01

^99mTc-MIBI SPECT/CT结合CT影像学特征在原发性甲状旁腺疾病中的价值

doi: 10.12122/j.issn.1674-4500.2023.06.01

赵宇嘉^1,,
白侠^{1, 2, ,}

1.
内蒙古医科大学附属医院核医学科，内蒙古呼和浩特 010050
2.
内蒙古自治区分子影像学重点实验室，内蒙古呼和浩特 010050

基金项目:

内蒙古自治区科技计划项目 2021GG0236

内蒙古自治区高等学校自然科学重点项目 NJZZ21039

青年科技人才发展项目 NJYT23074

详细信息

作者简介:
赵宇嘉，硕士，住院医师，E-mail: zhaoyujia1013@163.com

通讯作者:
白侠，副主任医师，硕士生导师，E-mail: libaiqiangxia@163.com

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- 被引次数: 0
出版历程
- 收稿日期: 2023-09-30
- 网络出版日期: 2023-12-26
- 刊出日期: 2023-11-20

Value of ^99mTc-MIBI SPECT/CT combined with CT imaging features in the diagnosis of primary parathyroid diseases

ZHAO Yujia^1
,,
BAI Xia^{1, 2
, ,}

1.
Department of Nuclear Medicine, Affiliated Hospital of Inner Mongolia Medical University, Hohhot 010050, China
2.
Key Laboratory of Molecular Imaging of Inner Mongolia, Hohhot 010050, China

摘要

摘要: 目的探讨SPECT/CT及CT影像学特征在原发性甲状旁腺亢进症（PHPT）影像学定位不准确时的临床价值。方法选取90例手术病理证实为PHPT的患者，根据病理结果将其分为漏诊组（n=12）和诊断正确组（n=78）；患者共切除110个病灶，按照病理结果分为甲状旁腺病灶组（n=81）和甲状腺病灶组（n=29），在SPECT/CT断层融合图像上的甲状旁腺病灶区、甲状腺病灶区、甲状旁腺病灶对侧正常区勾画大小相同的感兴趣区，并记录上述不同部位的放射性计数，计算靶与非靶比值（T/NT）和靶本比（TBR）；在CT病灶截面收集连续3个层面CT密度最大值（CT_max）、最小值（CT_min）及平均值（CT_avg）。对各组数据进行组间比较，绘制ROC曲线，评估各项数据的诊断效能。结果 ^99mTc-MIBI SPECT/CT图像上，漏诊组病灶的T/NT、TBR、体积、直径均小于诊断正确组，两组间T/NT的差异具有统计学意义（P=0.002）且诊断效能最佳，两组间TBR、体积、直径的差异无统计学意义（P>0.05）。甲状旁腺病灶组和甲状腺病灶组比较中，两组间血钙、血磷的差异无统计学意义（P>0.05），甲状腺病灶组血清甲状旁腺素、TBR、CT_max、CT_min、CT_avg均小于甲状旁腺病灶组（P＜0.05）。CT_max的诊断效能最优，AUC为0.623，敏感度为74.10%，特异性为62.50%。结论 SPECT/CT对PHPT进行术前定位时T/NT的诊断效能较TBR更好，可以为PHPT术前定位病灶提供更有价值的参考；与甲状腺病灶进行对TBR、CT_max有较好的临床价值。
- 原发性甲状旁腺亢进症 /
- SPECT/CT /
- 甲状腺疾病
Abstract: Objective To investigate the clinical value of SPECT/CT and CT imaging features in primary hyperparathyroidism (PHPT) with inaccurate imaging location. Methods A total of 90 patients with PHPT confirmed by surgery and pathology were selected and divided into a missed diagnosis group (n=12) and a correct diagnosis group (n=78) according to pathological results, and a parathyroid lesion group (n=81) and a thyroid lesion group (n=29) according to pathological results. The same size areas of interest were delineated in the focal areas of parathyroid, thyroid and contralateral normal areas of parathyroid lesions on the SPECT/CT fusion images, and the radioactive counts of these different sites were recorded, and target-to-nontarget ratio (T/NT) and target-to- non-target ratio (TBR) were calculated. The mean values of maximum CT density (CT_max), minimum CT density (CT_min) and mean CT density (CT_avg) were collected at three consecutive layers. The data of each group were compared between groups, the working curve of subjects was drawn, and the diagnostic efficacy of each data was evaluated. Results On ^99mTc-MIBI SPECT/CT images, the T/NT, TBR, volume, and diameter of the lesions in the missed group were smaller than those in the correctly diagnosed group, and the difference in T/NT between the two groups was statistically significant (P=0.002) and the diagnostic efficiency was the best, while there was no significant difference in TBR, volume, and diameter between the two groups (P>0.05). There was no significant difference in blood Ca and blood P between the parathyroid lesion group and the thyroid lesion group(P>0.05). The parathyroid hormone, TBR, CT_max, CT_min and CT_avg in the thyroid lesion group were all lower than those in the parathyroid lesion group (P < 0.05). The diagnostic efficiency of CT_max was the best, with AUC of 0.623, sensitivity of 74.10% and specificity of 62.50%. Conclusion SPECT/CT has better diagnostic efficacy than TBR in preoperative localization of PHPT, which can provide more valuable reference for preoperative localization of PHPT. It has good clinical value to treat TBR and CT_max with thyroid lesions.
- primary hyperparathyroidism /
- SPECT/CT /
- thyroid disease

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图 1 漏诊组病灶的代表性SPECT/CT图像

Figure 1. Representative SPECT/CT images of lesions in the missed group. A: Adenoma of the inferior parathyroid gland behind the right lobe of the thyroid; B: Adenoma of the inferior parathyroid gland behind the right lobe of the thyroid.

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图 2 诊断正确组病灶的代表性SPECT/CT图像

Figure 2. Representative SPECT/CT images of the lesions in the correct group. A: Adenoma of the inferior parathyroid gland behind the right lobe of the thyroid; B: Adenoma of the inferior parathyroid gland behind the left lobe of the thyroid; C: Adenoma of the inferior parathyroid gland behind the left lobe of the thyroid.

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图 3 漏诊组和诊断正确组ROC曲线图

Figure 3. ROC curves of the missed group and the correct group.

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图 4 甲状腺旁腺病灶组和甲状腺病灶组ROC曲线图

Figure 4. ROC curves of parathyroid lesion group and thyroid lesion group.

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表 1 两组临床数据分析

Table 1. Clinical data analysis of two groups.

Clinical data analysis of enrolled patients	Total（n=90）	Missed diagnosis group（n=12）	Correct diagnosis group（n=78）	t/χ²	P
Gender [n(%)]				-	0.31
Male	16（17.78）	2（16.60）	14（17.94）
Female	74（82.22）	10（62.50）	64（82.05）
Clinical data (Mean±SD)
Ca（mmol/L）	2.68±0.31	2.61±0.25	2.61±0.25	-1.51	0.13
P（mmol/L）	0.91±0.49	0.97±0.59	0.84±0.35	0.84	0.41
PTH（pg/L）	387.73±402.39	458.27±482.40	315.20±322.35	1.48	0.14
Location [n(%)]				1.12	0.17
Left lower	32（32.98）	5（31.25）	27（33.33）
Right lower	35（36.08）	3（39.50）	32（39.50）
Left upper	14（14.43）	4（12.34）	10（12.34）
Right upper	16（16.49）	4（25.00）	12（14.81）
Thyroid disease [n(%)]				0.30	0.58
Yes	27（30.00）	4（33.33）	23（29.48）
No	63（70.00）	8（66.67）	55（70.51）
Ca：Calcium；P：Phosphorus；PTH：Parathyroid hormone.

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表 2 漏诊组与诊断正确组组间数据分析

Table 2. Data analysis between missed diagnosis group and correct diagnosis group (Mean±SD)

Index	Missed diagnosis group（n=12）	Correct diagnosis group（n=78）	t/χ²	P
Radioactive uptake
TBR	6.63±7.97	10.86±9.68	-1.641	0.104
T/NT	2.10±1.67	3.85±2.51	-3.488	0.002
Imaging data (Hu)
CT_min	19.94±19.28	12.02±30.72	0.990	0.325
CT_max	69.69±21.34	75.33±24.39	-0.862	0.391
CT_avg	54.15±21.22	45.58±18.98	1.619	0.109
Tumor lesion
Volume (cm³)	2.99±5.12	5.31±8.30	-1.077	0.284
Diameter (cm)	1.87±1.16	2.28±1.21	-1.258	0.211
TBR：Target background ratio；T/NT：Target and non-target ratio.

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表 3 漏诊组和诊断正确组ROC最佳界值表

Table 3. ROC best threshold table for missed and correct diagnosis groups

Radioactive uptake	AUC	Optimum value	Sensitivity	Specificity	Cut-off
T/NT	0.755	0.429	0.679	0.750	2.300
TBR	0.721	0.443	0.568	0.875	7.200

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表 4 是否伴甲状腺疾病对漏诊病灶的分析

Table 4. Analysis of missed lesions with or without thyroid disease [n(%)]

Thyroid disease	Missed diagnosis group	Correct diagnosis group	Total	t/χ²	P
Yes	5（31.25）	20（24.69）	25（25.77）	0.30	0.58
No	11（68.75）	61（75.31）	61（75.31）
Total	16（100.00）	81（100.00）	97（100.00）

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表 5 甲状旁腺病灶组与甲状腺病灶组数据分析

Table 5. Data analysis of parathyroid lesion group and thyroid lesion group (Mean±SD)

Index	Thyroid focus group (n=29)	Parathyroid focus group (n=81)	t/χ²	P
Clinical data
Ca	2.66±0.25	2.75±0.36	-1.443	0.154
P	0.79±0.17	0.83±0.35	-0.594	0.554
PTH	206.06±130.75	315.20±322.35	-2.522	0.013
Imaging data
TBR	4.79±3.89	10.86±9.68	-4.680	＜0.001
CT_max	108.79±27.10	75.33±24.39	6.155	＜0.001
CT_min	59.83±20.36	12.02±30.72	7.777	＜0.001
CT_avg	82.58±22.21	45.58±18.98	7.987	＜0.001

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表 6 甲状旁腺病灶组和甲状腺病灶组ROC最佳界值表

Table 6. ROC best threshold table for parathyroid and thyroid lesion groups

Imaging data	AUC	Optimum value	Sensitivity	Specificity	Cut-off
CT_max	0.623	0.366	0.741	0.625	63.000
CT_min	0.435	0.160	0.222	0.938	36.000
CT_avg	0.392	0.023	0.148	0.875	62.400

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