Simultaneous bilateral magnetic resonance angiography to evaluate thoracic outlet syndrome

被引:6
|
作者
Poretti, Dario [1 ]
Lanza, Ezio [2 ]
Sconfienza, Luca Maria [3 ,4 ]
Mauri, Giovanni [4 ]
Pedicini, Vittorio [1 ]
Balzarini, Luca [1 ]
Sardanelli, Francesco [3 ,4 ]
机构
[1] IRCCS Ist Clin Humanitas, Dipartimento Radiol, I-20089 Rozzano, MI, Italy
[2] Univ Milan, Scuola Specializzaz Radiodiagnost, I-20142 Milan, Italy
[3] Univ Milan, Dipartimento Sci Biomed Salute, I-20133 Milan, Italy
[4] IRCCS Policlin San Donato, Serv Radiol, I-20097 San Donato Milanese, Italy
来源
RADIOLOGIA MEDICA | 2015年 / 120卷 / 05期
关键词
Thoracic outlet syndrome; Magnetic resonance angiography; Simultaneous bilateral injection; MRA; SB-MRA; TOS; 3T; 3Tesla; Angiography; MR-ANGIOGRAPHY; DIAGNOSIS;
D O I
10.1007/s11547-014-0462-4
中图分类号
R8 [特种医学]; R445 [影像诊断学];
学科分类号
1002 ; 100207 ; 1009 ;
摘要
This paper presents a new magnetic resonance angiography (MRA) protocol for the evaluation of thoracic outlet syndrome (TOS) that allows for a separate assessment of veins and arteries while using a single, simultaneous and bilateral (SB-MRA) single contrast injection, valid for both abduction and adduction acquisitions. From 2009 to 2013 we performed 38 MRA studies for clinically suspected TOS (13 M, 25 F; mean age, 35.9 years; sigma = 11.13). Twin peripheral 20G intravenous catheters were placed in a cubital vein in both arms and connected to a single power injector by two lines joined with a connector. A 3T MR system with a wide gantry was used. Two groups of four radiologists assessed all the images. Group A judged the full examinations, Group B had only the late acquisitions. Differences were evaluated using the Chi square test. TOS was confirmed only after integration with the clinical history. Seventeen (45 %) patients were diagnosed with predominant venous TOS (VTOS), nine (24 %) with predominant arterial TOS (ATOS) and 12 (32 %) had an indeterminate or nonvascular condition. Group A radiologists identified significantly more VTOS than group B (p = 0.049). Interobserver agreement was very high. SB-MRA is a safe and reliable protocol for the study of TOS. It provides a supplementary early acquisition that allows for separate assessment of veins and arteries, permits the investigation of the collateral venous flow with a single injection of contrast material and provides a higher diagnostic power for VTOS. SB-MRA is helpful for the diagnosis of TOS of vascular origin.
引用
收藏
页码:407 / 412
页数:6
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