Ishikawa Hironobu, Monma Masahiko, Ishimori Yoshiyuki, Saotome Kousaku, Ishii Shiro, Sekino Hirofumi, Yamakuni Ryo, Kakamu Takeyasu, Oura Daisuke, Takahashi Yuma, Seino Shinya, Yusa Masanori, Ito Hiroshi
Department of Radiology, Fukushima Medical University Hospital, 1 Hikariga-oka, Fukushima City, Fukushima, 960-1295, Japan.
Department of Radiological Sciences, Ibaraki Prefectural University Graduate School, 4669-2 Ami, Ami-Machi, Ibaraki, Japan.
Radiol Phys Technol. 2025 Mar;18(1):127-135. doi: 10.1007/s12194-024-00861-3. Epub 2024 Nov 26.
Despite the importance of T-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-T-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-T-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-T-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.
尽管T加权图像在临床实践中很重要，但伪影会显著降低图像质量并影响诊断。本研究对子宫位移进行了定量分析，并调查了女性盆腔快速自旋回波T加权图像的图像质量与子宫位移定量值之间的关系。总体而言，纳入了147名女性（平均年龄46.0±12.8岁；年龄范围22 - 84岁），她们使用3T磁共振成像扫描仪进行了盆腔磁共振成像检查。两名放射科医生对矢状面的快速自旋回波T加权图像进行了视觉评估，评估内容包括鬼影和运动模糊，并将图像质量分为以下三组：差、中、优。计算了半傅里叶采集单次激发快速自旋回波电影图像上的子宫位移，并从位移图图像中计算了子宫位移的最大幅度和子宫位移总和。进行了Kruskal-Wallis和Steel-Dwass检验，以比较三组之间子宫位移的最大幅度和子宫位移总和。分别在48、71和28例患者中观察到了差、中、优的图像质量。随着子宫位移最大幅度的增加，快速自旋回波T加权图像的质量在统计学上显著下降，P < 0.01。差组和中组的子宫位移总和与优组相比，具有更大的统计学意义，P < 0.01。
