Visualization of the fetal anus by prenatal ultrasound for the diagnosis of anorectal malformations: is it feasible?

Bischoff, Andréa; Guimaraes, Carolina V.; Mirsky, David M.; Santos-Jasso, Karla Alejandra; Zaretsky, Michael V.; Ketzer, Jill; Hall, Jennifer; Mueller, Claudia; Torre, Luís de la; Peña, Alberto; Meyers, Mariana L.

doi:10.1007/s00383-020-04840-8

Cited by 6 publications

(6 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1). Similar results were described by Lee et al [3, 7-12] and others. By MRI, the AD is best seen in the axial plane as a rounded or slightly oval area of hypointensity surrounded by bright perineal adipose tissue on T2-weighted sequences (single shot fast spin echo [SSFSE] sequences and steady-state free precession [SSFP]) (Fig.…”

Section: Introductionsupporting

confidence: 92%

“…In our prior work [3], we determined that the best time to visualize the AD on US is between 28 and 33 weeks-6 days. Normal fetal anatomic screening by US is performed at 20-week GA and of limited sensitivity for assessing the AD.…”

Section: Discussionmentioning

confidence: 99%

“…The aim of our study was to determine the feasibility of visualizing the AD by fetal MRI and compare it to that of US. Prior work by the authors demonstrated that visualization of the normal AD by fetal US is feasible [3], typically seen as a rounded area of echogenicity surrounded by a rim of hypoechogenicity posterior to the fetal genitalia, resembling a target sign (Fig. 1).…”

Section: Introductionmentioning

confidence: 99%

“…Anorectal malformations (ARMs) encompass a spectrum of complex congenital anomalies involving the distal bowel and genitourinary tract, ranging from recto-perineal fistula to persistent cloaca in females and recto-perineal fistula to recto-bladder neck fistula in males. They are the result of abnormal separation of the genitourinary system from the hindgut and affect approximately 1 in 5,000 live births [1][2][3][4]. ARM is often observed in association with chromosomal anomalies such as trisomy 13, 18, and 21, syndromes like VAC-TERL association (vertebral anomalies, anal atresia, cardiac defects, tracheo-esophageal fistula, renal anomalies, and limb abnormalities), Currarino triad, and in 50-86% of cases associated with multisystem abnormalities involving the renal, uterine, spinal, cardiac, and esophageal systems [1].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Visualization of the Anal Dimple by Fetal MRI: Is It Feasible?

et al. 2022

View full text Add to dashboard Cite

Introduction: To determine the feasibility of fetal MRI in identifying the normal anal dimple (AD) and compare it with prenatal ultrasound (US). Methods: Retrospective review of 130 patients with fetal MRI and US. The gestational age (GA) was stratified into four groups: 1) 16 to 21 weeks-6 days; 2) 22 to 27 weeks-6 days; 3) 28 to 33 weeks-6 days; and 4) 34 weeks and beyond. Steady State Free Presession (SSFP) and Single Shot Fast Spin Echo (SSFP) axial T2 MRI and transverse US images of the fetal perineum were analyzed, and visualization of the AD was determined. Clinical indication, gender, single versus multiple gestation, best MRI sequence where it was seen, and postnatal AD information were recorded. Results: The AD was visualized in 125/130 fetal MRIs, and visualization was independent of GA (p 0.230). US visualized the AD in 67/130 cases and the best GA for visualization was in group 3 (p<0.001). There was no difference on AD visualization between SSFSE and SSFP sequences (p 0.167). Conclusion: Prenatal visualization of the AD by MRI is feasible. The rate of visualization is superior by MRI compared to US and is independent of GA. Adding AD visualization to routine screening prenatal US and MRI may increase recognition of anorectal malformation.

show abstract

Section: Introductionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Visualization of the Anal Dimple by Fetal MRI: Is It Feasible?

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Ultrasound is a prevalent method used to diagnose and treat patients, mainly in cancer treatment and antenatal diagnosis [7][8][9][10][11][12]. The main problem with today's ultrasound devices (incredibly portable ones) is the poor quality of the reconstructed image [13,14].…”

Section: Introductionmentioning

confidence: 99%

Machine Learning and Deterministic Approach to the Reflective Ultrasound Tomography

Majerek

Rymarczyk

Wójcik³

et al. 2021

Energies

View full text Add to dashboard Cite

This paper describes the method developed using the Extreme Gradient Boosting (Xgboost) algorithm that allows high-resolution imaging using the ultrasound tomography (UST) signal. More precisely, we can locate, isolate, and use the reflective peaks from the UST signal to achieve high-resolution images with low noise, which are far more useful for the location of points where the reflection occurred inside the experimental tank. Each reconstruction is divided into two parts, estimation of starting points of wave packets of raw signal (SAT—starting arrival time) and image reconstruction via XGBoost algorithm based on SAT matrix. This technology is the basis of a project to design non-invasive monitoring and diagnostics of technological processes. In this paper, we present a method of the complete solution for monitoring industrial processes. The measurements used in the study were obtained with the author’s solution of ultrasound tomography.

show abstract