Can cost make a difference dosimetrically? Volumetric modulated arc therapy study for multileaf collimators of various widths for head and neck and prostate cancers.

Cancer is a global health issue that disproportionately kills based on stage of disease, cellular pathology, and genetics, to name a few. Another variable to consider in this ongoing fight is treatment machine complexity that leads to elevated development and purchasing cost, leading to a reduced use. Reducing the complexity (in hopes of lowering costs) would benefit underdeveloped, low- and middle-income countries by introducing newer treatment technology, as their currently accepted standards do not meet standards of more advanced, developed countries.

Results From the Imaging and Radiation Oncology Core Houston's Anthropomorphic Phantoms Used for Proton Therapy Clinical Trial Credentialing.

Purpose: The purpose of this study was to summarize the findings of anthropomorphic proton phantom irradiations analyzed by the Imaging and Radiation Oncology Core Houston QA Center (IROC Houston).

Methods And Materials: A total of 103 phantoms were irradiated by proton therapy centers participating in clinical trials. The anthropomorphic phantoms simulated heterogeneous anatomy of a head, liver, lung, prostate, and spine.

Nutritional status in chronically-ill elderly patients. Is it related to quality of life?

Objective: The aim of this study is to assess the quality of life in chronically-ill elderly patients and its relationship with parameters concerning the patients' nutritional status.

Design: A cross-sectional study.

Setting: Primary health-care centres in Jaen, Spain.

Relationships between scores on Wechsler Preschool and Primary Scale of Intelligence--Revised and Stanford-Binet IV.

The Wechsler Preschool and Primary Scale of Intelligence--Revised and the Stanford Binet-Intelligence Scale: Fourth Edition were given to 51 preschool, kindergarten, first, and second grade students. Twelve of 15 Pearson correlations between Wechsler IQs and composite and area scores of the Stanford-Binet IV were statistically significant. It is apparent that the two tests measure similar, but not identical, concepts.