Automating Angle Measurements on Foot Radiographs in Young Children: Feasibility and Performance of a Convolutional Neural Network Model

Journal of Digital Imaging - Measurement of angles on foot radiographs is an important step in the evaluation of malalignment. The objective is to develop a CNN model to measure angles on...     

A sample validation of the Adolescent Stress Questionnaire (ASQ) in New Zealand

The Adolescent Stress Questionnaire (ASQ) is a 56‐item scale measuring stress in 10 domains. The scale has been tested in a number of countries worldwide with mixed support. The current study tested the factor structure, construct validity, and reliability in a sample (n = 1,601) comprising a general population of adolescents in New Zealand. Support was found for the 10‐factor structure with adequate internal consistency as well as strong factorial invariance between male and female participants. Significant inverse correlations were found between all ASQ domains and both life satisfaction and perceived academic achievement. Most ASQ domains revealed gender differences, with female participants reporting greater stress than males. Toward a nonbinary perspective of gender, gender‐neutral participants reported greater stress than males and females in certain stress domains. Results based on regression analyses indicate that nonacademic ASQ domains were generally related to life satisfaction whereas academic ASQ domains were related to perceived academic achievement. Positive and negative interaction effects were observed between gender and ASQ domains on life satisfaction and academic achievement. Overall, the current results indicate that the ASQ appears to be a reliable, valid instrument for adolescent stress in New Zealand with relevance to perceived life satisfaction and achievement.     

Three-dimensional ultrasound of the neonatal brain: technical approach and spectrum of disease

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. Three-dimensional neurosonography allows imaging of the entire brain in a single volumetric sweep and offers the capability of reconstructing images in the axial plane and performing volumetric analyses that are unavailable in conventional two-dimensional neurosonography. The purpose of this article is two-fold: (1) to present the technical aspects of three-dimensional neurosonography and (2) to illustrate the potential applications of three-dimensional neurosonography in the context of commonly encountered neonatal neuropathology.     

A Patch-Based Deep Learning Approach for Detecting Rib Fractures on Frontal Radiographs in Young Children

Journal of Digital Imaging - Chest radiography is the modality of choice for the identification of rib fractures in young children and there is value for the development of computer-aided rib...