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Last Updated: 23 July 2022

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Long-term 3D CT follow-up after endoscopic sagittal craniosynostosis repair

OBJECTIVE Surgical intervention of sagittal synostosis necessitates various surgical techniques. METHODS (encoding) The authors' goal in this review was to analyze their long-term endoscopic surgical results in children with sagittal synostosis using 3D CT. METHODS (English) The authors' research sought to review the authors' long-term endoscopic surgical outcomes in children with sagittal synostosis repair at age 16 weeks or younger. In both cases, a standard vertex craniectomy with biparietal wedges was performed. RESULTS Thirty-two of 38 children met inclusion criteria, with thirty-two of them meeting inclusion criteria. Three children's secondary sutural fusion was experienced. CONCLUSIONS The authors chronicle their encounter with 32 of their first 38 children who underwent endoscopic sagittal synostosis repair at 16 weeks of age or younger. This is the longest clinicoradiologic sequel-up to date in children with sagittal synostosis treated with endoscopic surgery, with a minimum duration of 5 years.

Source link: https://doi.org/10.3171/2019.10.peds19297


Fusion patterns of major calvarial sutures on volume-rendered CT reconstructions

OBJECTIVE The authors investigated the normal course of fusion of minor lateral sutures in pediatric trauma patients using u201c3D volume-rendered head CT reconstructions. Many more fused sagittal sutures than anticipated when analyzing these reconstructions, according to the now well-known prevalence of sagittal craniosynostosis. They looked at the course of fusion of the sagittal, coronal, and metopic sutures in the present study, which used the same collection of head CT reconstructions. paraphrasedoutput:METHODS They investigated all volume-rendered head CT reconstructions performed in the period from 2010 to mid-2012 at Children's Hospital Colorado for trauma patients aged 0u201321 years. For patients with fused and partially fused sagittal sutures, the cephalic index was determined. The sagittal suture had fusion or partial fusion of the twenty-one subjects. Four of the 21 of the 21th also had fusion of the medial lambdoid and/or coronal sutures. The mean CI was 77. 6 in the 17 patients with sagittal suture fusion and no medial fusion of adjacent sutures. No one of the 21 patients had been previously diagnosed with craniosynostosis before. No other coronal sutures were fused medially. Fusion of the metopic suture was first seen at 3 months of life; fusion was not complete until after 2 years. CONCLUSIONS The sagittal and lambdoid sutures do not fuse until 18 years of age, so they do not normally fuse before 18 years of age. The coronal suture begins to fuse inferiorly early in the second decade of life in the 2nd decade of life, but does not achieve complete fusion before 18 years old.

Source link: https://doi.org/10.3171/2019.11.peds1953


Etiology and cranial CT scan profile of nontumoral hydrocephalus in a tertiary black African hospital

Object Description Hydrocephalus is a common disorder in the pediatric population. The cause of poor surgical outcomes, hydrocephalus, Evans ratio, ventricular index, and cerebral mantle thickness are just a few of the factors associated with poor surgical outcome. Patient outcomes One hundred thirty-seven patients were admitted to the unit during the specified time. The mean cerebral mantle was 10. 8 mm, according to 0. 56, the mean ventricular index was 197. 18, and the mean arterial mantle was 10. 8 mm. Conclusions This report reveals that the congenital form of hydrocephalus is the most common species in the authors' population. Hydrocephalus is a common symptom of hydrocephalus, with myelomeningocele-associated hydrocephalus, aqueductal stenosis, Dandy-Walker's malformation, and postmeningitic hydrocephalus.

Source link: https://doi.org/10.3171/2011.1.peds10481


Feasibility of CT-based intraoperative 3D stereotactic image-guided navigation in the upper cervical spine of children 10 years of age or younger: initial experience

OBJECT In young children's upper cervical spine, rigid screw fixation may be physically impossible. A surgeon may be aided by the precision placement of screws in anatomically difficult location by an intraoperative stereotactic navigation. This review was meant to evaluate the authors' initial experience with the safety and reliability of this technique, both for resection and for screw placement in the upper cervical spine in younger children. METHODS Eight consecutive pediatric patients ten years old or younger underwent upper cervical spine surgery, assisted by image-guided navigation. Image-guided navigation is safe within the pediatric cervical spine and can be a useful surgical aid for inserting screws in a patient with small, often difficult bony anatomy. The authors chronicled their encounter with their first 8 pediatric patients who underwent cervical spine surgery navigation.

Source link: https://doi.org/10.3171/2015.2.peds14556


Pediatric skull fracture diagnosis: should 3D CT reconstructions be added as routine imaging?

OBJECT The authors compared the results of combining 2D+3D CT reconstructions with standard 2D CT photos in the diagnosis of linear skull fractures in children with head injury. METHODS This was a retrospective review of head CT studies of children with head injury. The 2D CT images alone and then in combination with the 3D reconstructions for the diagnosis of linear skull fractures were evaluated by three readers independently. The three readers determined sensitivity and specificity in the diagnosis of linear skull fractures using 2D and 3D CT in combination, as well as all children under the age of two years old and in all children. CONCLUSIONS 2D+3D CT in combination heightened sensitivity in the diagnosis of linear skull fractures in all children and improved specificity in children under the age of less than 2 years old.

Source link: https://doi.org/10.3171/2015.3.peds1553


Analysis and interrater reliability of pB-C2 using MRI and CT: data from the Park-Reeves Syringomyelia Research Consortium on behalf of the Pediatric Craniocervical Society

However, both the validity among observers and the clinical value of this test in the context of Chiari malformation Type I have been uncertain. METHODS Data from the first 600 patients accepted in the Park-Reeves Syringomyelia Research Consortium with CM-I and syringomyelia were reviewed by the researchers. Using common imaging techniques: MRI and CT, three pediatric neurosurgeons independently established pB-C2 values. Measurement using T2-weighted MRI with the addition of retro-odontoid soft tissue showed no significant difference in comparison to measurement using T1-weighted MRI. Measurements using CT or T2-weighted MRI without retro-odontoid soft tissue were significantly shorter than those using the other two sequences, differed by 1. 6 mm and were significantly shorter than those using the other two sequences. Measurement using T2-weighted MRI excluding retro-odontoid soft tissue closely matches the value obtained using CT, which may have to be less common use of CT in this patient population.

Source link: https://doi.org/10.3171/2017.3.peds16604


A re-evaluation of the effects of dual growing rods on apical vertebral rotation in patients with early-onset scoliosis and a minimum of two lengthening procedures: a CT-based study

OBJECTIVE This paper was designed to assess the effects of traditional dual growing rods on axial rotation using CT scans, as well as explore the correlations between axial and torso deformities in patients with early-onset scoliosis. Patients with EOS who were treated with traditional DGRs between January 2006 and December 2014 were retrospectively reviewed by METHODS Patients with EOS who were treated with traditional DGRs between January 2006 and December 2014. On CT scans at the apical vertebral rotation and rib hump were determined. To investigate the correlations between spinal and torso deformities, spinal and torso deformities, spinal and torso deformities, spinal and torso deformities, Pearson or Spearman rank correlation analyses were used to analyze the correlations between spinal and torso deformities. During the follow-up period, strong correlations were found between AVR and AVB-R's degeneration, as well as the deterioration of AVR and the RH from the initial surgery to the new follow-up.

Source link: https://doi.org/10.3171/2018.3.peds1832


Segmentation of renal tumors in CT images by 3D U-Net preserving rotational symmetry in axial slices

By considering the organ's structure of kidneys, we present a method to enhance the accuracy of renal tumor segmentation in CT images. The CT images were first examined for kidney regions, which were excluded from the CT images. In both sagittal and coronal direction, the kidney region's center of gravity is aligned to the patch's center of gravity in Third. The new strategy, as compared to the traditional 3D U-Net, increases the DICE score from 0. 507 to 0. 604.

Source link: https://doi.org/10.1364/optcon.451024


High-dynamic-range X-ray CT imaging method based on energy self-adaptation between scanning angles

For new low-dynamic range imaging systems, multi-energy LDR image sequence fusion can extend the dynamic range, but the effectiveness is reduced. However, traditional fixed-energy X-ray imaging with HDR imaging systems can result in incongruity within energy, dynamic range, and the equivalent thickness of the workpiece at different projection angles, making it difficult to determine inconsgruity within energy, dynamic range, and the same thickness at various projection angles. Then, the projection has a blurred edge, and the CT image quality is poor due to scattering and the ineffective dose. A new HDR X-ray CT imaging technique with energy self-adaptation between scanning angles for HDR imaging systems is investigated in this paper. The transmission energy at each angle is adjusted adaptively by establishing a mathematical model comparing the gray level of the projection and the transmission voltage. The experimental findings show that the new imaging device can produce HDR CT imaging of complicated structures with high reconstruction quality, precise edge details, and high completeness.

Source link: https://doi.org/10.1364/osac.380634


Augmented Reality-Assisted CT-Guided Puncture: A Phantom Study

Abstract Purpose: The aim of this paper is to investigate the availability of a novel augmented reality system for CT-guided liver interventions and to compare it with free-hand interventions in a phantom setting. Conclusion In this small collection, it appears that the novel augmented reality software may enhance the accuracy of CT-guided punctures in the phantom model relative to the free-hand method while maintaining a similar accuracy.

Source link: https://doi.org/10.1007/s00270-022-03195-y

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions