Mariana L. Meyers

ORCID: 0000-0001-9817-2246
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About
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Research Areas
  • Congenital Diaphragmatic Hernia Studies
  • Fetal and Pediatric Neurological Disorders
  • Pediatric Urology and Nephrology Studies
  • Neonatal Respiratory Health Research
  • Urological Disorders and Treatments
  • Congenital Heart Disease Studies
  • Renal and related cancers
  • Congenital gastrointestinal and neural anomalies
  • Pregnancy and preeclampsia studies
  • MRI in cancer diagnosis
  • Congenital Anomalies and Fetal Surgery
  • Teratomas and Epidermoid Cysts
  • Tracheal and airway disorders
  • Hip disorders and treatments
  • Tumors and Oncological Cases
  • Gastrointestinal disorders and treatments
  • Orthopaedic implants and arthroplasty
  • Prenatal Screening and Diagnostics
  • Esophageal and GI Pathology
  • Neonatal and fetal brain pathology
  • Maternal and fetal healthcare
  • Advanced MRI Techniques and Applications
  • Hernia repair and management
  • Ectopic Pregnancy Diagnosis and Management
  • Renal cell carcinoma treatment

Children's Hospital Colorado
2015-2025

University of Colorado Denver
2016-2025

University of Colorado Anschutz Medical Campus
2019-2025

The Medical Center of Aurora
2022-2023

Sharp Mary Birch Hospital for Women & Newborns
2020

University of Utah
2020

Magee-Womens Hospital
2020

University College Cork
2020

Rady Children's Hospital-San Diego
2020

University of Colorado Hospital
2015

<h3>Importance</h3> Umbilical cord milking as an alternative to delayed umbilical clamping may provide equivalent benefits preterm infants, but without delaying resuscitation. <h3>Objective</h3> To determine whether the rates of death or severe intraventricular hemorrhage differ among infants receiving placental transfusion with vs clamping. <h3>Design, Setting, and Participants</h3> Noninferiority randomized clinical trial (born at 23-31 weeks' gestation) from 9 university private medical...

10.1001/jama.2019.16004 article EN JAMA 2019-11-19

Background: Radiographic surveillance of the hip is vital in diagnosis and treatment developmental dysplasia (DDH) children. The acetabular index (AI) depth ratio (ADR) are radiographic parameters for evaluation morphology. Normal reference curves these that allow serial development a manner independent age necessary clinically useful. purpose this study was (1) to establish normal values AI ADR normally developing pediatric up 14, (2) generate percentile both parameters, (3) determine...

10.1097/bpo.0000000000000791 article EN Journal of Pediatric Orthopaedics 2016-06-03

The purpose of this study is to establish normal total fetal lung volume reference ranges from 18 38 weeks' gestation at 1-week intervals.A retrospective analysis 665 patients who underwent MRI two tertiary centers 2001 2013 was performed. Total measured in least planes, either manually or using a 3D workstation. mean, median, SD, minimum, maximum, and lower upper quartiles for were determined per gestational week. A t test used compare our values previously reported values. new formula...

10.2214/ajr.17.19469 article EN American Journal of Roentgenology 2018-06-12

Background Patients with developmental dysplasia of the hip (DDH) whose hips are dislocated but reducible (Ortolani positive) more likely to experience Pavlik harness treatment failure than patients dysplastic and reduced dislocatable (Barlow hips. However, data regarding factors associated limited conflicting. Questions/Purposes We asked: (1) What is frequency among Ortolani-positive hips, Barlow-positive hips? (2) predictive for Methods In this retrospective study we identified 150 who...

10.1007/s11999-016-4776-5 article EN Clinical Orthopaedics and Related Research 2016-03-18

Background Recent advances in hardware and software permit the use of cardiac MRI late gestation fetuses, however there is a paucity MRI‐based reference values. Purpose To provide initial data on fetal MRI‐derived dimensions, volumes, ventricular function, left longitudinal strain healthy developing fetuses &gt;30 weeks gestational age. Study Type Prospective. Population Twenty‐five third trimester (34 ± 1 weeks, range 32–37 gestation) women with fetuses. Field Strength/Sequence Studies were...

10.1002/jmri.29077 article EN Journal of Magnetic Resonance Imaging 2023-10-19

Four-dimensional flow MRI was feasible in third-trimester fetuses, and hemodynamic measurements were precise across measurement locations, internally consistent based on conservation of mass, repeatable from test-retest data, correlated to two-dimensional phase contrast measurements.

10.1148/ryct.240119 article EN Radiology Cardiothoracic Imaging 2024-12-01

The purpose of this article is to determine the reliability sonographic renal length measurements compared with obtained from helical CT multiplanar reformat images and standard growth curves.A retrospective review was performed 76 subjects who underwent both ultrasound abdominal within 2 weeks one another. Renal lengths were measured using oblique coronal helically acquired data by two observers on occasions. Intraobserver interobserver error for these calculated. Ultrasound measurements....

10.2214/ajr.10.5486 article EN American Journal of Roentgenology 2011-04-21

Objective: To evaluate whether fetal brain lateral ventricle measurements differ between ultrasound (US) and MRI.Methods: We evaluated 115 fetuses with US MRI performed within 24 h of each other. Ventricular were in the axial plane at level atria for both modalities right left ventricles separately. compared mean measurements; differences, association gestational age (GA), presence a anomaly, agreement US.Results: The LV RV measured 65 64 cases, respectively. size estimates significantly...

10.3109/14767058.2016.1171310 article EN The Journal of Maternal-Fetal & Neonatal Medicine 2016-03-28

We asked whether patient-specific factors and ultrasound (US) measurements of hip dysplasia severity at initial examination influence short-term residual acetabular in patients successfully treated with Pavlik harness for developmental dysplasia.After IRB approval, 134 hips (84 patients) by the method between August 2011 October 2014 follow-up 12 months age were identified. Early successful treatment was defined as normal US after approximately weeks treatment. Multivariate linear logistic...

10.1097/bpo.0000000000000875 article EN Journal of Pediatric Orthopaedics 2016-09-23

Objectives Mercapto acetyl tri‐glycine renogram (MAG3) scan has been the gold standard assessment of pediatric ureteropelvic junction obstruction (UPJO) but requires intravenous access and radiation exposure. While Doppler ultrasound measurements resistive indices (RI) arcuate arteries have proposed as an alternative obstruction, they not widely adopted in population. We hypothesized that RI main renal artery (RA) is more strongly correlated with MAG3 findings than RI. Methods Pediatric...

10.1002/jum.16479 article EN Journal of Ultrasound in Medicine 2024-05-16

The objective of our study was to evaluate intraoperative low-field MRI for the frequency and duration imaging sessions needed during surgery, direct additional procedure time attributable imaging, proportion cases in which information provided by led a change or otherwise deemed valuable operating surgeons.One hundred twenty-two patients (65 males, 57 females; age range, 6-77 years; mean age, 43.8 years) underwent 130 neurosurgical ENT procedures (106 craniotomies, 17 transsphenoidal...

10.2214/ajr.06.1247 article EN American Journal of Roentgenology 2007-10-22

To compare congenital pulmonary airway malformation (CPAM) volume to head circumference ratios (CVRs) determined by different imaging modalities and calculation techniques.Fetal thoracic lesion images ultrasound (US) magnetic resonance (MRI) were retrospectively reviewed the CVRs calculated. The CVR(US) was standard method. CVR(MRI) calculated from T2-weighted sequences (HASTE/SSH-TSE) in two ways, dimensional measurements analogous US technique (MRI-D) using a MRI-software (MRI-V). CVR...

10.3109/14767058.2015.1118038 article EN The Journal of Maternal-Fetal & Neonatal Medicine 2015-11-26

Fetal MRI is performed without sedation. In cases of maternal claustrophobia or when reduction fetal motion critical, benzodiazepines may help. The purpose this study was to evaluate the effects low-dose benzodiazepine on and its effect oxygen levels at higher elevation.A total 131 scans from March 2012 through December 2013 were studied. Nineteen following Valium administration. Images graded with a 5-point Likert scale. Using pulse oximetry, recorded.Results analyzed for each category...

10.1159/000450978 article EN Fetal Diagnosis and Therapy 2016-10-31

We characterize and apply the modified Bosniak classification system to a cohort of children with cystic renal lesions known surgical pathology.We identified all patients at our institution masses who also underwent surgery for these lesions. Patients without available preoperative imaging or pathology were excluded. All radiological was independently reviewed by pediatric radiologist blinded pathological findings. Imaging characteristics (size, border, septations, calcifications, solid...

10.1016/j.juro.2018.03.076 article EN The Journal of Urology 2018-03-20
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