The aim of this study was to compare planning target volume (PTV) defined on respiratory-gated positron emission tomography (PET)/CT (RG-PET/CT) to PTV based on ungated free-breathing CT and to evaluate if RG-PET/CT can be useful to personalize PTV by tailoring the target volume to the lesion motion in lung cancer patients.

Guerra, L., Meregalli, S., Zorz, A., Niespolo, R., De Ponti, E., Elisei, F., et al. (2014). Comparative evaluation of CT-based and respiratory-gated PET/CT-based planning target volume (PTV) in the definition of radiation treatment planning in lung cancer: preliminary results. EUROPEAN JOURNAL OF NUCLEAR MEDICINE AND MOLECULAR IMAGING, 41(4), 702-710 [10.1007/s00259-013-2594-5].

Comparative evaluation of CT-based and respiratory-gated PET/CT-based planning target volume (PTV) in the definition of radiation treatment planning in lung cancer: preliminary results

Guerra, L;De Ponti, E;Morzenti, S;BRENNA, SARAH GRAZIA;GARDANI, GIANSTEFANO;MESSA, MARIA CRISTINA
2014

Abstract

The aim of this study was to compare planning target volume (PTV) defined on respiratory-gated positron emission tomography (PET)/CT (RG-PET/CT) to PTV based on ungated free-breathing CT and to evaluate if RG-PET/CT can be useful to personalize PTV by tailoring the target volume to the lesion motion in lung cancer patients.
Campo DC Valore Lingua
dc.authority.ancejournal EUROPEAN JOURNAL OF NUCLEAR MEDICINE AND MOLECULAR IMAGING -
dc.authority.people Guerra, L -
dc.authority.people Meregalli, S -
dc.authority.people Zorz, A -
dc.authority.people Niespolo, R -
dc.authority.people De Ponti, E -
dc.authority.people Elisei, F -
dc.authority.people Morzenti, S -
dc.authority.people BRENNA, SARAH GRAZIA en
dc.authority.people Crespi, A -
dc.authority.people GARDANI, GIANSTEFANO en
dc.authority.people MESSA, MARIA CRISTINA en
dc.collection.id.s e39773c1-7ce2-35a3-e053-3a05fe0aac26 *
dc.collection.name 01 - Articolo su rivista *
dc.contributor.appartenenza DIPARTIMENTO DI MEDICINA E CHIRURGIA (SCHOOL OF MEDICINE AND SURGERY) *
dc.contributor.appartenenza.mi 30955 *
dc.contributor.area AREA MIN. 06 - SCIENZE MEDICHE *
dc.contributor.area AREA MIN. 06 - SCIENZE MEDICHE *
dc.contributor.area AREA MIN. 06 - SCIENZE MEDICHE *
dc.date.accessioned 2013-11-25T13:20:07Z -
dc.date.available 2013-11-25T13:20:07Z -
dc.date.issued 2014 en
dc.description.abstracteng The aim of this study was to compare planning target volume (PTV) defined on respiratory-gated positron emission tomography (PET)/CT (RG-PET/CT) to PTV based on ungated free-breathing CT and to evaluate if RG-PET/CT can be useful to personalize PTV by tailoring the target volume to the lesion motion in lung cancer patients. -
dc.description.allpeople Guerra, L; Meregalli, S; Zorz, A; Niespolo, R; De Ponti, E; Elisei, F; Morzenti, S; Brenna, S; Crespi, A; Gardani, G; Messa, M -
dc.description.allpeopleoriginal Guerra, L; Meregalli, S; Zorz, A; Niespolo, R; De Ponti, E; Elisei, F; Morzenti, S; Brenna, S; Crespi, A; Gardani, G; Messa, C en
dc.description.fulltext none en
dc.description.fulltextoriginal none en
dc.description.international No en
dc.description.numberofauthors 11 -
dc.identifier.citation Guerra, L., Meregalli, S., Zorz, A., Niespolo, R., De Ponti, E., Elisei, F., et al. (2014). Comparative evaluation of CT-based and respiratory-gated PET/CT-based planning target volume (PTV) in the definition of radiation treatment planning in lung cancer: preliminary results. EUROPEAN JOURNAL OF NUCLEAR MEDICINE AND MOLECULAR IMAGING, 41(4), 702-710 [10.1007/s00259-013-2594-5]. en
dc.identifier.doi 10.1007/s00259-013-2594-5 en
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dc.identifier.pmid 24177810 -
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dc.identifier.uri http://hdl.handle.net/10281/48326 -
dc.language.iso eng en
dc.publisher.name Springer Berlin Heidelberg en
dc.relation.firstpage 702 en
dc.relation.issue 4 en
dc.relation.lastpage 710 en
dc.relation.numberofpages 9 en
dc.relation.volume 41 en
dc.subject.keywordseng Respiratory-gated PET/CT, Radiation treatment planning, Planning target volume, Clinical target volume, Lung cancer -
dc.subject.singlekeyword Respiratory-gated PET/CT *
dc.subject.singlekeyword Radiation treatment planning *
dc.subject.singlekeyword Planning target volume *
dc.subject.singlekeyword Clinical target volume *
dc.subject.singlekeyword Lung cancer *
dc.title Comparative evaluation of CT-based and respiratory-gated PET/CT-based planning target volume (PTV) in the definition of radiation treatment planning in lung cancer: preliminary results en
dc.type Articolo su rivista -
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isi.title Comparative evaluation of CT-based and respiratory-gated PET/CT-based planning target volume (PTV) in the definition of radiation treatment planning in lung cancer: preliminary results *
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scopus.contributor.affiliation Nuclear Medicine, San Gerardo Hospital -
scopus.contributor.affiliation Radiotherapy, San Gerardo Hospital -
scopus.contributor.affiliation Medical Physics, San Gerardo Hospital -
scopus.contributor.affiliation Radiotherapy, San Gerardo Hospital -
scopus.contributor.affiliation Medical Physics, San Gerardo Hospital -
scopus.contributor.affiliation Nuclear Medicine, San Gerardo Hospital -
scopus.contributor.affiliation Medical Physics, San Gerardo Hospital -
scopus.contributor.affiliation School of Radiation Oncology, University of Milan-Bicocca -
scopus.contributor.affiliation Medical Physics, San Gerardo Hospital -
scopus.contributor.affiliation University of Milan-Bicocca -
scopus.contributor.affiliation Institute for Bioimaging and Molecular Physiology, National Research Council -
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scopus.contributor.country Italy -
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scopus.contributor.name Alessandra -
scopus.contributor.name Rita -
scopus.contributor.name Elena -
scopus.contributor.name Federica -
scopus.contributor.name Sabrina -
scopus.contributor.name Sarah -
scopus.contributor.name Andrea -
scopus.contributor.name Gianstefano -
scopus.contributor.name Cristina -
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scopus.contributor.surname Guerra -
scopus.contributor.surname Meregalli -
scopus.contributor.surname Zorz -
scopus.contributor.surname Niespolo -
scopus.contributor.surname De Ponti -
scopus.contributor.surname Elisei -
scopus.contributor.surname Morzenti -
scopus.contributor.surname Brenna -
scopus.contributor.surname Crespi -
scopus.contributor.surname Gardani -
scopus.contributor.surname Messa -
scopus.date.issued 2014 *
scopus.description.abstract Purpose: The aim of this study was to compare planning target volume (PTV) defined on respiratory-gated positron emission tomography (PET)/CT (RG-PET/CT) to PTV based on ungated free-breathing CT and to evaluate if RG-PET/CT can be useful to personalize PTV by tailoring the target volume to the lesion motion in lung cancer patients. Methods: Thirteen lung cancer patients (six men, mean age 70.0 years, 1 small cell lung cancer, 12 non-small cell lung cancer) who were candidates for radiation therapy were prospectively enrolled and submitted to RG-PET/CT. Ungated free-breathing CT images obtained during a PET/CT study were visually contoured by the radiation oncologist to define standard clinical target volumes (CTV1). Standard PTV (PTV1) resulted from CTV1 with the addition of 1-cm expansion of margins in all directions. RG-PET/CT images were contoured by the nuclear medicine physician and radiation oncologist according to a standardized institutional protocol for contouring gated images. Each CT and PET image of the patient's respiratory cycle phases was contoured to obtain the RG-CT-based CTV (CTV2) and the RG-PET/CT-based CTV (CTV3), respectively. RG-CT-based and RG-PET/CT-based PTV (PTV2 and PTV3, respectively) were then derived from gated CTVs with a margin expansion of 7-8 mm in head to feet direction and 5 mm in anterior to posterior and left to right direction. The portions of gated PTV2 and PTV3 geometrically not encompassed in PTV1 (PTV2 out PTV1 and PTV3 out PTV1) were also calculated. Results: Mean ± SD CTV1, CTV2 and CTV3 were 30.5±33.2, 43.1±43.2 and 44.8±45.2 ml, respectively. CTV1 was significantly smaller than CTV2 and CTV3 (p=0.017 and 0.009 with Student's t test, respectively). No significant difference was found between CTV2 and CTV3. Mean ± SD of PTV1, PTV2 and PTV3 were 118.7±94.1, 93.8±80.2 and 97.0±83.9 ml, respectively. PTV1 was significantly larger than PTV2 and PTV3 (p=0.038 and 0.043 with Student's t test, respectively). No significant difference was found between PTV2 and PTV3. Mean ± SD values of PTV2 out PTV1 and PTV3 out PTV1 were 12.8±25.4 and 14.3±25.9 ml, respectively. The percentage values of PTV2 out PTV1 and PTV3 out PTV1 were not lower than 10 % of PTV1 in 6/13 cases (46.2 %) and than 20 % in 3/13 cases (23.1 %). Conclusion: Our preliminary data showed that RG-PET/CT in lung cancer can affect not only the volume of PTV but also its shape, as demonstrated by the assessment of gated PTVs outside standard PTV. The use of a gating technique is thus crucial for better delineating PTV by tailoring the target volume to the lesion motion in lung cancer patients. © 2013 Springer-Verlag. *
scopus.description.allpeopleoriginal Guerra L.; Meregalli S.; Zorz A.; Niespolo R.; De Ponti E.; Elisei F.; Morzenti S.; Brenna S.; Crespi A.; Gardani G.; Messa C. *
scopus.differences scopus.publisher.name *
scopus.differences scopus.description.allpeopleoriginal *
scopus.document.type ar *
scopus.document.types ar *
scopus.identifier.doi 10.1007/s00259-013-2594-5 *
scopus.identifier.eissn 1619-7089 *
scopus.identifier.pmid 24177810 *
scopus.identifier.pui 52846754 *
scopus.identifier.scopus 2-s2.0-84897026566 *
scopus.journal.sourceid 16676 *
scopus.language.iso eng *
scopus.publisher.name Springer Verlag *
scopus.relation.firstpage 702 *
scopus.relation.issue 4 *
scopus.relation.lastpage 710 *
scopus.relation.volume 41 *
scopus.subject.keywords Clinical target volume; Lung cancer; Planning target volume; Radiation treatment planning; Respiratory-gated PET/CT; *
scopus.title Comparative evaluation of CT-based and respiratory-gated PET/CT-based planning target volume (PTV) in the definition of radiation treatment planning in lung cancer: Preliminary results *
scopus.titleeng Comparative evaluation of CT-based and respiratory-gated PET/CT-based planning target volume (PTV) in the definition of radiation treatment planning in lung cancer: Preliminary results *
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