Publications by authors named "Rafat S Mohtasib"

Objectives: To assess the usefulness of sonographically measured anogenital distance (AGD) in predicting fetal gender in Saudi fetuses during the first trimester and to provide normal reference centiles for AGD.

Methods: A retrospective cohort study was conducted at King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia between November 2020 and May 2021. The ultrasound scans of 313 singleton pregnancies between 11-13 plus 6 gestational weeks and their gender-at-birth were collected.

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Background: Ultrasound is commonly the first-line imaging modality for assessing the visceral organ dimensions without any risk of radiation. An abnormal size of the spleen may indicate disease, but the evaluation is challenging because of the normal size changes with age. In addition, published normal value charts for children may vary by population and methods.

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Objectives: To assess a baseline assessment using developed functional magnetic resonance imaging (fMRI) language paradigms for Arabic-speakers.

Methods: 24-healthy right-handed volunteers scanned on a 3.0 Tesla MRI machine.

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Background: Ultrasonography provides a quick assessment of visceral organ dimensions without any risk of radiation. Since many diseases can affect the kidney size, having a reliable reference for kidney length in children is valuable for clinical assessment.

Objective: Establish normal growth curves for renal length in relation to sex, age, body weight, height, body mass index and body surface area of healthy children in Saudi Arabia.

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Background: Shoulder pathologies need accurate diagnosis for best management and treatment provided to patients.

Objective: Determine the diagnostic sensitivity, specificity and accuracy of shoulder ultrasonography (US).

Design: Retrospective, analytical.

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The present study evaluates the effects of a behavioral skill training package on parent implementation of discrete trial teaching with their children with autism spectrum disorder. Three mothers of children with autism participated in the study. The training package improved implementation for all three of the mothers.

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fMRI studies of aging have revealed increased blood oxygenation level dependent (BOLD) response to tasks of executive function with advancing age, which is generally interpreted as increased neural activity. However, changes in the cerebrovascular system with age can alter the BOLD signal, complicating this interpretation. Arterial spin labeling (ASL) allows simultaneous acquisition of BOLD and cerebral blood flow (CBF) information and can be used to quantify the component parts of the BOLD signal.

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