Parent-child interaction frequency: associations with age, sibling presence, and child health.

Objectives: Parent-child interaction plays a crucial role in child development. This study investigated associations between the frequency of parent-child-interactions and sociodemographic characteristics (age, sex, socio-economic status, family structure, number and age of siblings), physical and psychological symptoms in children, and mental health of parents.

Methods: The frequencies of 11 different parent-child interactions (shared reading, singing, moving, painting, building, puzzle, playing ball, role games, language games, number games and talking about problems) were assessed in 739 children aged 2-6.

Children's satisfaction with a comprehensive study program-Results from the LIFE Child cohort study.

Background: Research participants' satisfaction is a topic of great interest, especially in the context of longitudinal studies. Evaluation also represents an important component of quality management in the health care system. Adult studies found that personal characteristics, e.

Ultra-wide band radar for prospective respiratory motion correction in the liver.

T1 mapping of the liver is time consuming and can be challenging due to respiratory motion. Here we present a prospective slice tracking approach, which utilizes an external ultra-wide band radar signal and allows for efficient T1 mapping during free-breathing.The fast radar signal is calibrated to an MR-based motion signal to create a motion model.

Pilot tone-based prospective correction of respiratory motion for free-breathing myocardial T1 mapping.

Objective: To provide respiratory motion correction for free-breathing myocardial T1 mapping using a pilot tone (PT) and a continuous golden-angle radial acquisition.

Materials And Methods: During a 45 s prescan the PT is acquired together with a dynamic sagittal image covering multiple respiratory cycles. From these images, the respiratory heart motion in head-feet and anterior-posterior direction is estimated and two linear models are derived between the PT and heart motion.

[The LIFE Child study: A cohort study investigating child development in changing environmental conditions].

The LIFE Child study investigates healthy child development from pregnancy to young adulthood and the development of lifestyle diseases. Since study initiation in 2011, 1068 pregnant women and 4658 children have been included in the study. Children are recruited until the age of 16 years.

3D Free-breathing multichannel absolute Mapping in the human body at 7T.

Purpose: To introduce and investigate a method for free-breathing three-dimensional (3D) mapping of the human body at ultrahigh field (UHF), which can be used to generate homogenous flip angle (FA) distributions in the human body at UHF.

Methods: A 3D relative mapping sequence with a radial phase-encoding (RPE) k-space trajectory was developed and applied in 11 healthy subjects at 7T. An RPE-based actual flip angle mapping method was applied with a dedicated shim setting to calibrate the relative maps yielding absolute maps of the individual transmit channels.

Pilot tone-based motion correction for prospective respiratory compensated cardiac cine MRI.

Purpose: To evaluate prospective motion correction using the pilot tone (PT) as a quantitative respiratory motion signal with high temporal resolution for cardiac cine images during free breathing.

Methods: Before cine data acquisition, a short prescan was performed, calibrating the PT to the respiratory-induced heart motion using respiratory-resolved real-time images. The calibrated PT was then applied for nearly real-time prospective motion correction of cine MRI through slice tracking (ie, updating the slice position before every readout).

Associations of Green Spaces and Streets in the Living Environment with Outdoor Activity, Media Use, Overweight/Obesity and Emotional Wellbeing in Children and Adolescents.

Aspects of the living environment can affect health and wellbeing of children and adolescents. Whereas most previous studies assessed the more distant residential urban environment, less is known on possible effects of the close environment. The present study investigated associations of the proportion of streets and green spaces in the immediate urban living environment (50, 100 and 400 m around the home) with media use, outdoor activity, overweight/obesity and emotional problems in two samples of younger (age 3-10, = 395) and older children (age 10-19, = 405).

Media Use of Mothers, Media Use of Children, and Parent-Child Interaction Are Related to Behavioral Difficulties and Strengths of Children.

The present study investigated the associations of media use of children, media use of mothers, and parent-child interactions with behavioral strengths and difficulties in children. Screen time of 553 2- to 9-year-old children and their mothers were indicated by the daily durations of their TV/games console/computer/mobile phone use. The amount of parent-child interaction was indicated by the frequencies of shared activities at home.

Hospital volume and mortality in liver resections for colorectal metastasis using population-based administrative data.

Background: Approximately one-quarter of patients with colorectal carcinoma develop colorectal liver metastases (CRLM). Surgical treatment with curative intent by hepatic resection is the standard medical care. While some studies with small sample sizes have investigated the relationship between hospital procedure volume and in-hospital mortality for this diagnosis, no population-based study has been conducted.

Reciprocal Longitudinal Associations Between Adolescents' Media Consumption and Psychological Health.

Objective: This study investigated reciprocal longitudinal associations between media use/physical activity and adolescents' psychological health.

Methods: Data were collected between 2011 and 2017 in the LIFE Child study in Germany. The sample included 814 10- to 17-year-old adolescents.