{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,9,29]],"date-time":"2025-09-29T08:20:42Z","timestamp":1759134042517,"version":"3.37.3"},"reference-count":20,"publisher":"Wiley","license":[{"start":{"date-parts":[[2013,1,1]],"date-time":"2013-01-01T00:00:00Z","timestamp":1356998400000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["BioMed Research International"],"published-print":{"date-parts":[[2013]]},"abstract":"<jats:p><jats:italic>Purpose<\/jats:italic>. To correlate site and diameter of brain metastases with hippocampal sparing in patients treated by RapidArc (RA) technique on whole brain with simultaneously integrated boost (SIB).<jats:italic>Methods and Materials<\/jats:italic>. An RA plan was calculated for brain metastases of 1-2-3\u2009cm of diameter. The whole brain dose was 32.25 Gy (15 fractions), and SIB doses to brain metastases were 63 Gy (2 and 3\u2009cm) or 70.8 Gy (1\u2009cm). Plans were optimized and evaluated for conformity, target coverage, prescription isodose to target volume, homogeneity index, and hippocampal sparing.<jats:italic>Results<\/jats:italic>. Fifteen brain lesions and RA plan were generated. Hippocampal volume was 4.09\u2009cm<jats:sup>3<\/jats:sup>, and hippocampal avoidance volume was 17.50\u2009cm<jats:sup>3<\/jats:sup>. Related to site of metastases, the mean hippocampal dose was 9.68 Gy<jats:sup>2<\/jats:sup>for occipital lobe, 10.56 Gy<jats:sup>2<\/jats:sup>for frontal lobe, 10.56 Gy<jats:sup>2<\/jats:sup>for parietal lobe, 10.94 Gy<jats:sup>2<\/jats:sup>for deep brain structures, and 40.44 Gy<jats:sup>2<\/jats:sup>for temporal lobe. The mean hippocampal dose was 9.45 Gy<jats:sup>2<\/jats:sup>, 10.15 Gy<jats:sup>2<\/jats:sup>, and 11.70 Gy<jats:sup>2<\/jats:sup>for diameter\u2019s metastases of 1.2 and 3\u2009cm, respectively, excluding results relative to temporal brain lesions.<jats:italic>Conclusions<\/jats:italic>. Location more than size of metastases can adversely influence the hippocampus sparing. Further investigation is necessary to meet definitive considerations.<\/jats:p>","DOI":"10.1155\/2013\/568597","type":"journal-article","created":{"date-parts":[[2013,10,24]],"date-time":"2013-10-24T06:19:58Z","timestamp":1382595598000},"page":"1-6","source":"Crossref","is-referenced-by-count":3,"title":["Development of a Modelling to Correlate Site and Diameter of Brain Metastases with Hippocampal Sparing Using Volumetric Modulated Arc Therapy"],"prefix":"10.1155","volume":"2013","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0168-3459","authenticated-orcid":true,"given":"Silvia","family":"Chiesa","sequence":"first","affiliation":[{"name":"Department of Radiation Oncology, Universit\u00e0 Cattolica del Sacro Cuore, Largo Agostino Gemelli, 8, 00168 Roma, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mario","family":"Balducci","sequence":"additional","affiliation":[{"name":"Department of Radiation Oncology, Universit\u00e0 Cattolica del Sacro Cuore, Largo 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