Placental function assessed visually using half-Fourier acquisition single-shot turbo spin-echo (HASTE) magnetic resonance imaging

Himoto, Yuki; Kido, Aki; Mogami, Haruta; Moribata, Yusaku; Minamiguchi, Sachiko; Shitano, Fuki; Kiguchi, Kayo; Kurata, Yasuhisa; Konishi, Ikuo; Togashi, Kaori

doi:10.1016/j.placenta.2016.01.007

Cited by 6 publications

(14 citation statements)

References 16 publications

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“…Such areas represented placental ischemic changes. These findings agreed with those of Himoto et al [11] who reported that placentae with impaired function show decreased signal compared to normal placentas. They also explained that the degree of low signal might depend on the decrease of placental circulation and the degree of compensatory alteration.…”

Section: Discussionsupporting

confidence: 93%

Role of diffusion MR imaging (DWI) and three-dimensional ultrasound (3DUS) in the assessment of placental insufficiency in the gestational hypertension

Mansour

Hamed

Sayed

et al. 2019

Egypt J Radiol Nucl Med

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Background: DWI is a non-invasive MR modality that is not contrast-based. In the current study, we aimed to evaluate DWI in correlation with 3DUS in the detection of placental insufficiency in high-risk pregnancies complicated with hypertension. This prospective analysis included 80 pregnancies; 40 hypertensive and 40 controls, gestational age ranged from 22 to 34 weeks. All cases had undergone 3DUS aided by power Doppler scanning and DWI. There is no given contrast. Data were correlated to histopathology. Results: Doppler US showed a significant relation between RI of the right uterine artery of cases and control (P = 0.014). There was also a positive correlation between the presence of the diastolic notch and RI value. The mean ADC value in the controls was 1.87 ± 0.26 mm2/s, while in hypertensive was 1.36 ± 0.09 mm 2 /s. In DWI images, there was a significant difference between patients with normal and those with abnormal placental signals (P value = 0.047). Also, there was a significant difference between the measurement of placental volume by MRI and US among cases and controls (P values ≤0.001 and 0.017, respectively). Conclusion: Diffusion-weighted imaging can detect early subtle findings and signs of placental dysfunction more than detected with 3DUS, so it can add to the diagnostic accuracy of US in imaging of pregnancies at high risk of placental insufficiency.

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Section: Discussionsupporting

confidence: 93%

Role of diffusion MR imaging (DWI) and three-dimensional ultrasound (3DUS) in the assessment of placental insufficiency in the gestational hypertension

Mansour

Hamed

Sayed

et al. 2019

Egypt J Radiol Nucl Med

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“…This result was evident after GA of 32 weeks and adjustment for pregnancy complications, suggesting that the observed placental alteration seems not to be caused by increased incidence of pregnancy complications in women with PCOS. ADC is known to be reduced in placentas of growth-restricted fetuses (Bonel et al, 2010), and the placental SSFSE signal intensity can be used to evaluate placental function and risk of SGA (Himoto et al, 2016). However, our study found no significant difference in placental ADC or SSFSE signal intensity between women with and without PCOS, suggesting that placental perfusion and tissue density may not be affected by PCOS.…”

Section: Discussioncontrasting

confidence: 72%

Fetal growth, fetal development, and placental features in women with polycystic ovary syndrome: analysis based on fetal and placental magnetic resonance imaging

Zhang

Bao

Deng

et al. 2020

J. Zhejiang Univ. Sci. B

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Objective: Polycystic ovary syndrome (PCOS), a common endocrine-metabolic dysfunction in reproductiveaged women, may be involved in compromised pregnancy and offspring outcomes. This study aimed to investigate whether maternal PCOS affects fetal growth, fetal development, and placental features. Methods: This retrospective case-control study included 60 pregnant women with PCOS (PCOS group) and 120 healthy pregnant women without PCOS (control group). Fetal magnetic resonance imaging (MRI) was performed followed by an ultrasound examination and indications for imaging, including known or suspected fetal pathology, history of fetal abnormality in previous pregnancy or in a family member, and concern for placenta accreta. Fetal MRI images were analyzed for head circumference (HC), abdomen circumference (AC), lung-to-liver signal intensity ratio (LLSIR, a prenatal marker of fetal lung maturity), lengths of liver and kidney diameters in fetuses, and placental relative signal intensity on T2-weighted single-shot fast spin echo (SSFSE) imaging (rSI SSFSE ), and placental relative apparent diffusion coefficient value (rADC). Data on height and weight of offspring were collected through telephone follow-up. Results: Compared to the control group, the PCOS group showed the following characteristics: (1) smaller biparietal diameter and femur length in fetuses (P=0.026 and P=0.005, respectively), (2) smaller HC in fetuses (evident after 32 weeks; P=0.044), (3) lower LLSIR and smaller dorsoventral length of liver in fetuses (evident before 32 weeks; P=0.005 and P=0.019, respectively), and (4) smaller placental thickness (evident before 32 weeks; P=0.017). No significant differences in placental rSI SSFSE or rADC were observed between the groups (all P>0.05). No significant differences in height and weight of offspring during childhood existed between the groups (all P>0.05). Conclusions: There exist alterations of fetal growth, fetal development, and placental features from women with PCOS.

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“…Himoto et al (10) reported that the patterns of HASTE signal intensity reflect placental dysfunction, especially placental circulation. The patterns are useful for diagnosing placental insufficiency using a HASTE scoring system (10,11). However, quantitative analysis using HASTE imaging is necessary for the management both of the fetus and the maternal body in various clinical conditions.…”

Section: Introductionmentioning

confidence: 99%

“…However, quantitative analysis using HASTE imaging is necessary for the management both of the fetus and the maternal body in various clinical conditions. Although several reports have described the use of HASTE to evaluate placental function (10,11), detailed analyses correlating each imaging factor obtained by HASTE with T2-relaxation times were not performed. In addition, although amniotic fluid is often used as a reference (12), the validation of amniotic fluid as a reference has not been warranted because its signal intensity (SI) changes easily according to subtle movement of fetus or differences in distance from the coil.…”

Section: Introductionmentioning

confidence: 99%

What is the most suitable MR signal index for quantitative evaluation of placental function using Half-Fourier acquisition single-shot turbo spin-echo compared with T2-relaxation time?

et al. 2017

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Background Half-Fourier acquisition single-shot turbo spin-echo (HASTE) imaging is now widely used for placental and fetal imaging because of its rapidity and low sensitivity to fetal movement. If placental dysfunction is also predicted by quantitative value obtained from HASTE image, then it might be beneficial for evaluating placental wellbeing. Purpose To ascertain the most suitable magnetic resonance (MR) signal indexes reflecting placental function using HASTE imaging. Material and Methods This retrospective study included 37 consequent patients who had given informed consent to MR imaging (MRI) examinations. All had undergone MRI examinations between February 2014 and June 2015. First, the correlation between T2-relaxation time of normal placenta and gestational age (GA) was examined. Second, correlation between signal intensity ratios (SIRs) using HASTE imaging and placental T2-relaxation time were assessed. The SIRs were calculated using placental signal intensity (SI) relative to the SI of the amniotic fluid, fetal ocular globes, gastric fluid, bladder, maternal psoas major muscles, and abdominal subcutaneous adipose tissue. Results Among the 37 patients, the correlation between T2-relaxation time of the 25 normal placentas and GA showed a moderately strong correlation (Spearman rho = -0.447, P = 0.0250). The most significant correlation with placental T2-relaxation time was observed with the placental SIR relative to the maternal psoas major muscles (SIR) (Spearman rho = -0.531, P = 0.0007). Conclusion This study revealed that SIR showed the best correlation to placental T2-relaxation time. Results show that SIR might be optimal as a clinically available quantitative index of placental function.

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Placental function assessed visually using half-Fourier acquisition single-shot turbo spin-echo (HASTE) magnetic resonance imaging

Cited by 6 publications

References 16 publications

Role of diffusion MR imaging (DWI) and three-dimensional ultrasound (3DUS) in the assessment of placental insufficiency in the gestational hypertension

Role of diffusion MR imaging (DWI) and three-dimensional ultrasound (3DUS) in the assessment of placental insufficiency in the gestational hypertension

Fetal growth, fetal development, and placental features in women with polycystic ovary syndrome: analysis based on fetal and placental magnetic resonance imaging

What is the most suitable MR signal index for quantitative evaluation of placental function using Half-Fourier acquisition single-shot turbo spin-echo compared with T2-relaxation time?

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