Impact of uterine displacement on T2-weighted image quality in the female pelvic MRI.

IF 1.7 Q3 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING
Hironobu Ishikawa, Masahiko Monma, Yoshiyuki Ishimori, Kousaku Saotome, Shiro Ishii, Hirofumi Sekino, Ryo Yamakuni, Takeyasu Kakamu, Daisuke Oura, Yuma Takahashi, Shinya Seino, Masanori Yusa, Hiroshi Ito
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引用次数: 0

Abstract

Despite the importance of T2-weighted image in clinical practice, artifacts can significantly degrade image quality and affect diagnosis. This study quantitatively analyzed uterine displacement and surveyed the relationship between the image quality of fast-spin-echo-T2-weighted image of the female pelvis and quantitative value of uterine displacement. Overall, 147 women (mean age, 46.0 ± 12.8 years; age range, 22-84 years) who had undergone pelvic magnetic resonance imaging examination using a 3 T- magnetic resonance imaging scanner were included. Two radiologists performed a visual assessment of the fast-spin-echo-T2-weighted image in the sagittal plane in terms of ghosts and motion blur, and classified the image quality into the following three groups: poor, moderate, and excellent. Uterine displacement on half-Fourier acquisition single-shot turbo spin-echo-cine images was calculated, and the maximum amplitude of uterine displacement and summation of uterine displacement were calculated from the displacement map images. The Kruskal-Wallis and Steel-Dwass tests were performed to compare the maximum amplitude of uterine displacement and summation of uterine displacement among the three groups. Poor, moderate, and excellent image qualities were observed in 48, 71, and 28 patients, respectively. The quality of fast-spin-echo-T2-weighted images degraded statistically significantly with P < 0.01 as the maximum amplitude of uterine displacement increased. The summation of uterine displacement in the poor and moderate groups had greater statistical significance with P < 0.01 than that in the excellent group.

子宫移位对女性盆腔磁共振 T2 加权成像质量的影响
尽管 T2 加权成像在临床实践中非常重要,但伪影会明显降低成像质量,影响诊断。本研究对子宫移位进行了定量分析,并调查了女性盆腔快速旋转回波-T2加权成像的图像质量与子宫移位定量值之间的关系。共纳入了 147 名使用 3 T 磁共振成像扫描仪进行盆腔磁共振成像检查的女性(平均年龄为 46.0 ± 12.8 岁;年龄范围为 22-84 岁)。两名放射科医生对矢状面上的快速旋转回波-T2 加权图像的重影和运动模糊进行了目测评估,并将图像质量分为以下三组:差、中、优。计算半傅立叶采集单发涡轮自旋回波-正弦图像上的子宫位移,并根据位移图图像计算子宫位移的最大振幅和子宫位移的总和。采用 Kruskal-Wallis 检验和 Steel-Dwass 检验比较三组患者的子宫位移最大振幅和子宫位移总和。分别有 48、71 和 28 名患者的图像质量为差、中和优。快速旋转回波-T2 加权图像的质量明显下降,P
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来源期刊
Radiological Physics and Technology
Radiological Physics and Technology RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING-
CiteScore
3.00
自引率
12.50%
发文量
40
期刊介绍: The purpose of the journal Radiological Physics and Technology is to provide a forum for sharing new knowledge related to research and development in radiological science and technology, including medical physics and radiological technology in diagnostic radiology, nuclear medicine, and radiation therapy among many other radiological disciplines, as well as to contribute to progress and improvement in medical practice and patient health care.
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