In the fetuses with a normal gastrointestinal tract, signal characteristics of the stomach, the duodenum, the proximal small intestine, the distal small intestine, the ascending colon, the transverse colon, the descending colon, the sigmoid colon, and the rectum were assessed. RESULTS: Images obtained with the radial VIBE sequence had fewer motion and pulsation artifacts than those obtained with the MP-RAGE sequence (MP-RAGE vs radial VIBE motion score, 3.57 ± 1.00 vs 4.52 ± 0.51; pulsation score, 3.57 ± 0.60 vs 4.91 ± 0.21; all p < 0.001). Unable to load your delegates due to an error A large series is required to precisely determine using VIBE the visualization of the respective segments of the fetal gastrointestinal tract at different gestational ages.

“Radial VIBE (StarVIBE) sequence is ideal for MR imaging of pediatric patients. VIBE allowed better visualization of the fetal gastrointestinal tract than techniques used in previous reports [

View Larger Version

The identification of the respective intestine was made on the basis of the anatomic location, the continuity, and the presence or absence of haustra. Suivant les organes étudiés, elle peut être employée en pondération T2 pour obtenir des images plus détaillées.







Phantom validation. Of the 45 participants, 35 who fulfilled the following inclusion criteria were enrolled in this retrospective study. BACKGROUND AND PURPOSE: T1-weighted, 3D gradient-echo MR sequences can be optimized for rapid acquisition and improved resolution through asymmetric k-space sampling and interpolation.

The liver was used as a landmark of the anatomic position in the fetal abdomen. A summary of the normal findings is presented in In fetal MRI, signal intensity of the gastrointestinal tract is basically determined by the location and amounts of swallowed amniotic fluid and meconium [The VIBE sequence, which is a modified 3D fast gradient-echo sequence, uses a symmetric echo in the read direction, partial inplane Fourier sampling in the phase-encoding direction, and asymmetric echo sampling and sinc interpolation along the partition direction [Several investigators have suggested that 3D MR images were useful in surgical simulation and treatment planning before birth [Our study has some limitations. We compared a volumetric interpolated brain examination (VIBE) sequence with a magnetization-prepared rapid acquisition gradient echo (MP RAGE) sequence and a 2D T1-weighted spin-echo (SE) sequence. Clipboard, Search History, and several other advanced features are temporarily unavailable.

VIBE MRI for Evaluating the Normal and Abnormal Gastrointestinal Tract in FetusesCopyright © 2013-2020, American Roentgen Ray Society, ARRS, All Rights Reserved. Although there was one twin pregnancy, we examined only the indicated fetus.On the basis of the medical records of postnatal diagnoses, 28 of the 35 fetuses had a normal gastrointestinal tract. 3.

It significantly improves overall image quality and is motion robust, allowing for optimal imaging in free-breathing sedated pediatric patients.“ 1,2 Sarah S. Milla, MD Pediatric Radiologist Atlanta, GA The small intestine was subdivided into the duodenum, the proximal small intestine, and the distal small intestine because a distinction between the jejunum and the ileum was not feasible.
December 2007, VOLUME 189 The usefulness of fast MRI, including single-shot fast spin-echo sequences, for evaluating fetal abdominal disorders has been reported with increasing frequency.



Diagnostic Imaging and Related Sciences
In addition, we could not determine signal characteristics of fetal gastrointestinal abnormalities, although it has been reported that signal characteristics are more conspicuous in abnormal cases [In conclusion, we report the appearances of normal and abnormal fetal gastrointestinal tracts on HASTE T2-weighted imaging, VIBE T1-weighted imaging, and 3D MR colonography.