MR modulated flip angle technique in refocused imaging with extended echo train contrast enhanced T1-weighted fluid attenuated inversion recovery(MATRIX CE-T1 FLAIR)sequence for detecting skull metastases
10.13929/j.issn.1672-8475.2025.08.005
- VernacularTitle:MR可调制翻转角超长回波链回聚脉冲对比增强T1加权液体衰减反转恢复(MATRIX CE-T1 FLAIR)序列用于检测颅骨转移癌
- Author:
Junhong LIU
1
;
Junhui YUAN
;
Zhenzhen ZHANG
;
Suya QIAO
;
Huiyuan YANG
;
Dongqiu SHAN
;
Yue WU
;
Chunmiao XU
;
Xuejun CHEN
Author Information
1. 郑州大学附属肿瘤医院 河南省肿瘤医院医学影像科,河南 郑州 450008
- Publication Type:Journal Article
- Keywords:
skull neoplasms;
magnetic resonance imaging;
modulated flip angle technique in refocused imaging with extended echo train;
prospective studies
- From:
Chinese Journal of Interventional Imaging and Therapy
2025;22(8):516-519
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the value of MR modulated flip angle technique in refocused imaging with extended echo train(MATRIX)contrast enhanced(CE)T1-weighted fluid attenuated inversion recovery(T1 FLAIR)for detecting skull metastases.Methods Forty-four patients with malignant tumors who underwent head MR scanning for screening skull metastasis were prospectively enrolled,and skull metastasis were then confirmed by pathology or imaging examinations,including MRI,CT,radionuclide bone imaging(BS),PET/CT and follow-up.Head MATRIX CE-T1 FLAIR(group A),3D gradient recalled echo_fast spin echo with magnetization preparation(GRE_fsp)CE-T1 FLAIR(group B)and fast spin echo(FSE)CE-T1 FLAIR(group C)images of all 44 cases were acquired.The subjective scores(including images quality and diagnostic confidence)and objective evaluation results of images were compared among groups.Taken BS or PET/CT results as standards,the efficacy of 3 kinds of images for detecting skull metastases was calculated.Results The subjective scores of images quality and diagnostic confidence,as well as signal-to-noise ratio(SNR)in group A and C were all higher than those in group B(all P＜0.001),and signal intensity(SI)metastases in group A was higher than those in group B and C(both P＜0.05).No significant difference of subjective score and SNR was found between groups A and C,nor of SImetastases between groups B and C(all P＞0.05).Totally 102 skull metastases were diagnosed with PET/CT or BS,while 129,151 and 115 lesions were detected in group A,B and C,respectively,with accuracy rate of 79.07%(102/129),67.55%(102/151)and 88.70%(102/115),respectively.Conclusion MATRIX CE-T1 FLAIR sequence could be used to detect skull metastases.
