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https://www.readbyqxmd.com/read/28088647/the-developmental-relationship-between-specific-cognitive-domains-and-grey-matter-in-the-cerebellum
#1
Dorothea M Moore, Anila M D'Mello, Lauren M McGrath, Catherine J Stoodley
There is growing evidence that the cerebellum is involved in cognition and cognitive development, yet little is known about the developmental relationship between cerebellar structure and cognitive subdomains in children. We used voxel-based morphometry to assess the relationship between cerebellar grey matter (GM) and language, reading, working memory, executive function, and processing speed in 110 individuals aged 8-17 years from the Pediatric Imaging, Neurocognition, and Genetics (PING) Study. Further, we examined the effect of age on the relationships between cerebellar GM and cognition...
December 21, 2016: Developmental Cognitive Neuroscience
https://www.readbyqxmd.com/read/28087684/the-effect-of-price-information-on-the-ordering-of-images-and-procedures
#2
Alyna T Chien, Smitha Ganeshan, Mark A Schuster, Lisa Soleymani Lehmann, Laura A Hatfield, Kate E Koplan, Carter R Petty, Anna D Sinaiko, Thomas D Sequist, Meredith B Rosenthal
BACKGROUND AND OBJECTIVES: Ordering rates for imaging studies and procedures may change if clinicians are shown the prices of those tests while they are ordering. We studied the effect of 2 forms of paid price information, single median price and paired internal/external median prices, on how often pediatric-focused and adult-oriented clinicians (most frequently general pediatricians and adult specialists caring for pediatric-aged patients, respectively) order imaging studies and procedures for 0- to 21-year-olds...
January 13, 2017: Pediatrics
https://www.readbyqxmd.com/read/28081128/radiation-exposure-from-diagnostic-imaging-in-a-cohort-of-pediatric-transplant-recipients
#3
Alexandra Seal, Michael Hawkes, Ravi Bhargava, Michelle Noga, Jutta Preiksaitis, Curtis Mabilangan, Joan Robinson
Recipients of solid organ transplants (SOT) have extensive diagnostic imaging (DI). The purpose of this study was to quantify this exposure. Children from northern Alberta with SOTs at Stollery Children's Hospital, Edmonton, Alberta January 1, 2006, to July 31, 2012, were included. Effective doses of radiation were estimated using published norms for DI performed post-transplant up to October 16, 2014. The 54 eligible children had 6215 DI studies (5628 plain films, 293 computerized tomography (CT) scans, 149 positron emission topography (PET) -CT scans, 47 nuclear medicine scans and 98 cardiac catheterizations)...
2017: PloS One
https://www.readbyqxmd.com/read/28079916/adolescent-shin-pain
#4
Jeremy Korsh, Douglas Matijakovich, Charles Gatt
Shin pain is a common complaint in adolescent athletes. The term "shin splints" has historically been applied to these patients. Shin splints, more often than not, refers to a stress reaction of the tibia from overuse. Overuse injuries occur when repetitive microtrauma to the bone exceeds the biologic healing potential. Diagnosis is based on typical history and physical examination findings. Plain radiographs and advanced imaging are rarely necessary but can provide valuable prognostic information. Treatment consists of adequate rest and exercise modification...
January 1, 2017: Pediatric Annals
https://www.readbyqxmd.com/read/28075612/comparison-of-mechanical-versus-hand-administration-of-iv-contrast-agents-for-pediatric-pulmonary-ct-angiography
#5
Matthew A Zapala, David Zurakowski, Edward Y Lee
OBJECTIVE: The purpose of this study was to assess the difference between mechanical versus hand administration of IV contrast agents on the diagnostic quality of pediatric pulmonary CT angiography (CTA). MATERIALS AND METHODS: A retrospective review of the medical records was performed to detect pediatric patients (≤ 18 years) with pulmonary CTA performed between September 2012 and March 2015. Patients were placed into two cohorts on the basis of the method of contrast administration (mechanical vs hand)...
January 11, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28072621/risk-stratification-of-pediatric-patients-with-neuroblastoma-using-volumetric-parameters-of-18f-fdg-and-18f-dopa-pet-ct
#6
Chia-Ju Liu, Meng-Yao Lu, Yen-Lin Liu, Chi-Lun Ko, Kuan-Yin Ko, Kai-Yuan Tzen, Hsiu-Hao Chang, Yung-Li Yang, Shiann-Tarng Jou, Wen-Ming Hsu, Ruoh-Fang Yen
PURPOSE: This study determined the prognostic value of volumetric parameters derived from pretreatment F-FDG and F-DOPA PET/CT of neuroblastoma and their correlation with clinical and histopathologic features. PATIENTS AND METHODS: A total of 25 children with neuroblastoma underwent pretreatment F-FDG and F-DOPA PET/CT within 4 weeks. The SUVmax of primary tumors on F-FDG and F-DOPA PET were recorded as SUVFDG and SUVDOPA, respectively. For volumetric parameters of primary tumors, 40% of SUVmax was used to generate volume of interest...
January 9, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28066887/the-effect-of-beam-purity-and-scanner-complexity-on-proton-ct-accuracy
#7
P Piersimoni, J Ramos-Méndez, T Geoghegan, V A Bashkirov, R W Schulte, B A Faddegon
PURPOSE: To determine the dependence of the accuracy in reconstruction of relative stopping power (RSP) with proton computerized tomography (pCT) scans on the purity of the proton beam and the technological complexity of the pCT scanner using standard phantoms and a digital representation of a pediatric patient. METHODS: The Monte Carlo method was applied to simulate the pCT scanner, using both a pure proton beam (uniform 200 MeV mono-energetic, parallel beam) and the Northwestern Medicine Chicago Proton Center (NMCPC) clinical beam in uniform scanning mode...
November 22, 2016: Medical Physics
https://www.readbyqxmd.com/read/28062089/structured-reporting-of-magnetic-resonance-enterography-for-pediatric-crohn-s-disease-effect-on-key-feature-reporting-and-subjective-assessment-of-disease-by-referring-physicians
#8
Benjamin Wildman-Tobriner, Brian C Allen, Joseph T Davis, Chad M Miller, Gary R Schooler, Nancy M McGreal, Reinaldo Quevedo, Julie K Thacker, Tracy A Jaffe
PURPOSE: To objectively compare the content of structured reports (SR) vs nonstructured reports (NSR) for magnetic resonance enterography (MRE) of pediatric patients with Crohn's disease, and to evaluate referring clinicians' subjective assessment of reports. METHODS: This institutional review board-approved, Health Insurance Portability and Accountability Act-compliant retrospective study included 25 pediatric subjects (15 male, 10 female; mean age = 14 years [range: 9-18 years]) with Crohn's disease imaged with MRE...
December 5, 2016: Current Problems in Diagnostic Radiology
https://www.readbyqxmd.com/read/28061837/metacarpal-bone-loss-in-patients-with-rheumatoid-arthritis-estimated-by-a-new-digital-x-ray-radiogrammetry-method-initial-results
#9
Alexander Pfeil, Hans Henrik Thodberg, Diane M Renz, Lisa Reinhardt, Peter Oelzner, Gunter Wolf, Joachim Böttcher
BACKGROUND: The Digital X-ray Radiogrammetry (DXR) method measures the cortical bone thickness in the shafts of the metacarpals and has demonstrated its relevance in the assessment of hand bone loss caused by rheumatoid arthritis (RA). The aim of this study was to validate a novel approach of the DXR method in comparison with the original version considering patients with RA. METHOD: The study includes 49 patients with verified RA. The new version is an extension of the BoneXpert method commonly used in pediatrics which has these characteristics: (1) It introduces a new technique to analyze the images which automatically validates the results for most images, and (2) it defines the measurement region relative to the ends of the metacarpals...
January 6, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28060325/interictal-high-frequency-oscillations-detected-with-simultaneous-magnetoencephalography-and-electroencephalography-as-biomarker-of-pediatric-epilepsy
#10
Christos Papadelis, Eleonora Tamilia, Steven Stufflebeam, Patricia E Grant, Joseph R Madsen, Phillip L Pearl, Naoaki Tanaka
Crucial to the success of epilepsy surgery is the availability of a robust biomarker that identifies the Epileptogenic Zone (EZ). High Frequency Oscillations (HFOs) have emerged as potential presurgical biomarkers for the identification of the EZ in addition to Interictal Epileptiform Discharges (IEDs) and ictal activity. Although they are promising to localize the EZ, they are not yet suited for the diagnosis or monitoring of epilepsy in clinical practice. Primary barriers remain: the lack of a formal and global definition for HFOs; the consequent heterogeneity of methodological approaches used for their study; and the practical difficulties to detect and localize them noninvasively from scalp recordings...
December 6, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28060175/cochlear-nerve-deficiency-and-brain-abnormalities-in-pediatric-patients
#11
Thierry Morlet, Markian Pazuniak, Robert C O'Reilly, Vinay Kandula, Arabinda K Choudhary
HYPOTHESIS: To investigate the intracranial abnormalities present in children with cochlear nerve deficiency (CND), including abnormalities of other cranial nerves, and to describe their auditory abilities. BACKGROUND: The prevalence of CND has increased with the development of high resolution magnetic resonance imaging (MRI). There are varying degrees of CND from true aplasia to hypoplasia. The etiology of CND remains unclear and it may be associated with intracranial abnormalities in some instances...
January 4, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28060123/whole-body-mri-virtual-autopsy-using-diffusion-weighted-imaging-with-background-suppression-dwibs-at-3-t-in-a-child-succumbing-to-chordoma
#12
Savvas Andronikou, Marnie L Kemp, Michelle Meiring
BACKGROUND: We report the use of diffusion-weighted imaging with background suppression (DWIBS) in pediatric virtual magnetic resonance imaging (MRI) autopsy of a child who succumbed to chordoma. CASE DESCRIPTION: A 10-year-old girl who succumbed to relapse of a chordoma underwent whole-body virtual MRI autopsy 12 hours postmortem with short Tau inversion recovery (STIR) and DWIBS on 3 T, which demonstrated the primary mass, local and cardiac invasion, and metastatic disease to the thorax, abdomen, head/neck, and musculoskeletal system...
January 5, 2017: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/28058484/hoverboards-spectrum-of-injury-and-association-with-an-uncommon-fracture
#13
Andrew H Schapiro, Neil U Lall, Christopher G Anton, Andrew T Trout
BACKGROUND: Self-balancing electric scooters, commonly known as hoverboards, are a new and popular consumer item with recognized fall hazards. The spectrum of injuries associated with hoverboard use has not been studied. OBJECTIVE: The purpose of this study is to determine the spectrum of radiologically apparent injuries associated with hoverboard use. MATERIALS AND METHODS: We retrospectively reviewed all imaging studies interpreted at our institution for hoverboard-related injuries during an 8-month period...
January 6, 2017: Pediatric Radiology
https://www.readbyqxmd.com/read/28058483/three-dimensional-ultrasound-of-the-neonatal-brain-technical-approach-and-spectrum-of-disease
#14
Jessica Kurian, Susan Sotardi, Mark C Liszewski, William A Gomes, Thomas Hoffman, Benjamin H Taragin
Brain pathology is an important cause of morbidity and mortality in neonates, especially in the premature population. While conventional two-dimensional neurosonography is traditionally used for screening, diagnosis and monitoring of brain disorders such as germinal matrix hemorrhage, periventricular leukomalacia and hydrocephalus, three-dimensional ultrasonography has gained popularity in a variety of clinical applications in recent years. Three-dimensional ultrasonography is not yet widely utilized in pediatric imaging but is a potentially powerful tool for evaluating the neonatal brain...
January 5, 2017: Pediatric Radiology
https://www.readbyqxmd.com/read/28058227/magnetic-resonance-imaging-of-the-transplanted-pediatric-heart-as-a-potential-predictor-of-rejection
#15
Steven C Greenway, Frederic Dallaire, Paul F Kantor, Anne I Dipchand, Rajiv R Chaturvedi, Monali Warade, Eugenie Riesenkampff, Shi-Joon Yoo, Lars Grosse-Wortmann
AIM: To evaluate cardiac magnetic resonance imaging (CMR) as a non-invasive tool to detect acute cellular rejection (ACR) in children after heart transplant (HT). METHODS: Thirty pediatric HT recipients underwent CMR at the time of surveillance endomyocardial biopsy (EMB) and results were compared to 14 non-transplant controls. Biventricular volumes, ejection fractions (EFs), T2-weighted signal intensities, native T1 times, extracellular volumes (ECVs) and presence of late gadolinium enhancement (LGE) were compared between patients and controls and between patients with International Society of Heart and Lung Transplantation (ISHLT) grade ≥ 2R rejection and those with grade 0/1R...
December 24, 2016: World Journal of Transplantation
https://www.readbyqxmd.com/read/28056140/benefits-and-limitations-of-entry-level-3-dimensional-printing-of-maxillofacial-skeletal-models
#16
Alex T Legocki, Andrew Duffy-Peter, Andrew R Scott
Importance: A protocol for creating exceptionally low-cost 3-dimensional (3-D) maxillofacial skeletal models does not require proficiency with computer software or intensive labor. Small and less affluent centers can produce models with little loss in accuracy and clinical utility. Objectives: To highlight the feasibility and methods of introducing in-house, entry-level additive manufacturing (3-D printing) technology to otolaryngologic craniofacial reconstruction and to describe its clinical applications and limitations, including a comparison with available vendor models...
January 5, 2017: JAMA Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/28051222/contribution-of-ultrasound-scans-in-the-first-episode-of-urinary-tract-infection-in-children
#17
Manel Jellouli, Asma Ben Mansour, Kamel Abidi, Meriem Ferjani, Ouns Naija, Yousra Hammi, Chokri Zarrouk, Tahar Gargah
Background - Vesicoureteral reflux (VUR) is a common pediatric urologic disorder. After the first urinary tract infection (UTI), imaging studies are recommended, starting with a renal ultrasound (US) and voiding cystourethrography (VCUG). We propose to determine whether abnormalities found on US can help indicate the necessity of VCUG in children after the first urinary tract infection. Methods - A retrospective study included all children admitted with their first episode of urinary tract infection from January 2007 to December 2012...
June 2016: La Tunisie Médicale
https://www.readbyqxmd.com/read/28050641/children-presenting-in-delayed-fashion-after-minor-head-trauma-with-scalp-swelling-do-they-require-further-workup
#18
Jonathan N Sellin, Amee Moreno, Sheila L Ryan, Sandi K Lam, Marcella Donaruma-Kwoh, Thomas G Luerssen, Andrew Jea
PURPOSE: It is common to evaluate children who have sustained minor head trauma with computed tomography (CT) of the head. Scalp swelling, in particular, has been associated with intracranial injury. A subset of patients, however, present in delayed fashion, often days after the head trauma, as soft tissue edema progresses and their caregiver notices scalp swelling. We explore the value of further workup in this setting. METHODS: We conducted a retrospective review of a prospectively collected cohort of children ≤24 months of age presenting to the Texas Children's Hospital with scalp swelling more than 24 h following a head trauma...
January 3, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28048918/su-f-r-11-designing-quality-and-safety-informatics-through-implementation-of-a-ct-radiation-dose-monitoring-program
#19
J M Wilson, E Samei
PURPOSE: Recent legislative and accreditation requirements have driven rapid development and implementation of CT radiation dose monitoring solutions. Institutions must determine how to improve quality, safety, and consistency of their clinical performance. The purpose of this work was to design a strategy and meaningful characterization of results from an in-house, clinically-deployed dose monitoring solution. METHODS: A dose monitoring platform was designed by our imaging physics group that focused on extracting protocol parameters, dose metrics, and patient demographics and size...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048899/we-fg-202-09-voxel-level-analysis-of-adverse-treatment-response-in-pediatric-patients-treated-for-ependymoma-with-passive-scattering-proton-therapy
#20
C Peeler, D Mirkovic, U Titt, D Grosshans, R Mohan
PURPOSE: We identified patients treated for ependymoma with passive scattering proton therapy who subsequently developed treatment-related imaging changes on MRI. We sought to determine if there is any spatial correlation between imaged response, dose, and LET. METHODS: A group of 14 patients treated for ependymoma were identified as having post-treatment MR imaging changes observable as T2-FLAIR hyperintensity with or without enhancement on T1 post-contrast sequences...
June 2016: Medical Physics
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