Comparison of Different Combinations of Irradiation Mode and Jaw Width in Helical Tomotherapy for Nasopharyngeal Carcinoma

Purpose: To aid in the selection of a suitable combination of irradiation mode and jaw width in helical tomotherapy (HT) for the treatment of nasopharyngeal carcinoma (NPC).Materials and Methods: Twenty patients with NPC who underwent radiotherapy were retrospectively selected.Four plans using a jaw width of 2.5 or 5-cm in dynamic jaw (DJ) or fix j

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The functions of heraldic symbols in the English fiction

The article considers the main functions performed by heraldic symbols due to their verbalization in blazons as descriptions of coats of arms by a specific set of language constructs.Heraldic symbols as the quintessence of culture are analyzed in the communicative-functional aspect.There are some special characteristics of heraldic symbolic units,

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