Relationship between the degree of abdominal wall movement and the image quality of contrast-enhanced MRI: semi-quantitative study especially focused on the occurrence of transient severe motion artifact

被引：9

作者：

Ikeno, Hiroshi ^{[1
]}

Kobayashi, Satoshi ^{[1
,2
]}

Kozaka, Kazuto ^{[1
]}

Ogi, Takahiro ^{[1
]}

Inoue, Dai ^{[1
]}

Yoneda, Norihide ^{[1
]}

Yoshida, Kotaro ^{[1
]}

Ohno, Naoki ^{[2
]}

Gabata, Toshifumi ^{[1
]}

Kitao, Azusa ^{[1
]}

机构：

[1] Kanazawa Univ, Grad Sch Med Sci, Dept Radiol, 13-1 Takara Machi, Kanazawa, Ishikawa 9208641, Japan

[2] Kanazawa Univ, Grad Sch Med Sci, Dept Quantum Med Technol, 13-1 Takara Machi, Kanazawa, Ishikawa 9208641, Japan

来源：

JAPANESE JOURNAL OF RADIOLOGY | 2020年 / 38卷 / 02期

关键词：

Magnetic resonance imaging (MRI); Gd-EOB-DTPA; Liver; Transient severe motion; Artifact (TSM); Respiratory bellows; HEPATIC ARTERIAL PHASE; GADOXETATE DISODIUM; INTERNATIONAL FORUM; CONSENSUS REPORT;

D O I：

10.1007/s11604-019-00896-2

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：

PurposeTo reveal the relationship between abdominal movement and artifact, and to reveal if the transient artifact in arterial phase is caused by transient abdominal movement (TAM) in contrast-enhanced (CE) MRI.Materials and methods325 CE-MRI series (206 with EOB and 119 with EGCM) were included. The abdominal movement was classified into three groups by respiratory bellows waveform (= bellows grade, BG 1-3), and MR image quality (= artifact score, AS) was graded 1-5 for the precontrast, arterial and portal venous phase, respectively. The relationship between the BG and AS was evaluated. The occurrence of transient artifact in arterial phase was compared to the degree of TAM.ResultsIn the acquisitions with BG3, all images showed AS of >2, while no images had AS of >4 in the acquisitions with BG1. Numbers of transient artifact in the arterial phase with no-abdominal movement (NAM), mild-TAM, severe-TAM were 0 of 120, 4 of 27, 7 of 8 in EOB and 0 of 91, 1 of 4, 0 of 0 in EGCM, respectively.ConclusionImage quality is highly correlated with abdominal movement. Moreover, artifact in arterial phase was not observed in NAM, which indicated abdominal movement is the direct cause of artifact.

引用

页码：165 / 177

页数：13

共 14 条

[1] Respiratory Motion Artifact Affecting Hepatic Arterial Phase MR Imaging with Gadoxetate Disodium Is More Common in Patients with a Prior Episode of Arterial Phase Motion Associated with Gadoxetate Disodium [J].