SU‐FF‐T‐216: Evaluation of Mid‐Treatment Tumor Motion for Hypo‐Fractionated Lung Radiosurgery Using Hi‐Art TomoTherapy System
Purpose: To investigate the variation of the daily mid‐treatment positioning setup of the helical TomoTherapy with MV‐CT for hypofractionated lung radiosurgery cases utilizing BodyFix rigid immobilization. Methods and Materials: 54 cases treated by a hypo‐fractionated Image Guided‐Intensity Modulate...
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| Veröffentlicht in: | Medical physics (Lancaster) 2007-06, Vol.34 (6), p.2451-2451 |
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| creator | Jang, S Wu, H Sourivong, P Katz, S Rosen, L |
| description | Purpose: To investigate the variation of the daily mid‐treatment positioning setup of the helical TomoTherapy with MV‐CT for hypofractionated lung radiosurgery cases utilizing BodyFix rigid immobilization. Methods and Materials: 54 cases treated by a hypo‐fractionated Image Guided‐Intensity Modulated Radiosurgery technique and immobilized with the BodyFix double vacuum system were analyzed retrospectively to investigate the daily variation of mid‐treatment motion, as measured daily by MV‐CT scanning. Scans were performed prior to treatment as well as at mid‐treatment. In the treated cases, a margin of 7–9mm around the CTV was utilized as a PTV. The BodyFix double vacuum system with a lung compression belt was used to minimize breathing motion and intra‐fractional tumor motion. Patients were treated daily by two fractions (e.g., 12Gy/day=6Gy/fr×2fr immediately sequentially delivered after MV‐CT guidance). Results: For all cases, multiple MV‐CT scans were performed immediately before treatment to reach optimal treatment position. After image registration and subsequent adjustment, treatment was delivered. A mid‐treatment MV‐CT scan was obtained immediately after the first‐half treatment and then table adjustments were compared. Table adjustment for mid‐treatment was longitudinal: 1.3±0.7mm and vertical: 0.9±0.5mm. The lateral recorded adjustments of 0.1±0.3mm could not be accurately determined as movements of |
| doi_str_mv | 10.1118/1.2760877 |
| format | Article |
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Methods and Materials: 54 cases treated by a hypo‐fractionated Image Guided‐Intensity Modulated Radiosurgery technique and immobilized with the BodyFix double vacuum system were analyzed retrospectively to investigate the daily variation of mid‐treatment motion, as measured daily by MV‐CT scanning. Scans were performed prior to treatment as well as at mid‐treatment. In the treated cases, a margin of 7–9mm around the CTV was utilized as a PTV. The BodyFix double vacuum system with a lung compression belt was used to minimize breathing motion and intra‐fractional tumor motion. Patients were treated daily by two fractions (e.g., 12Gy/day=6Gy/fr×2fr immediately sequentially delivered after MV‐CT guidance). Results: For all cases, multiple MV‐CT scans were performed immediately before treatment to reach optimal treatment position. After image registration and subsequent adjustment, treatment was delivered. A mid‐treatment MV‐CT scan was obtained immediately after the first‐half treatment and then table adjustments were compared. Table adjustment for mid‐treatment was longitudinal: 1.3±0.7mm and vertical: 0.9±0.5mm. The lateral recorded adjustments of 0.1±0.3mm could not be accurately determined as movements of <2mm were often omitted. It is found that slow MV‐CT scan results in a blurred target image essentially negating the effects of respiratory cycle. These results showed that the treatment margin of 7–9mm was adequate to cover the target as verified by mid‐treatment scan and that the BodyFix immobilization system provided clinically acceptable tolerance for lung radiosurgery. There was no significant difference in couch adjustment between upper and mid/lower lobe tumor locations, which may result from the robust immobilization tool. Conclusions: MV‐CT guided lung radio‐surgery using Hi‐Art TomoTherapy and BodyFix double vacuum system was clinically acceptable by minimizing the variation of patient position during the treatment.</description><identifier>ISSN: 0094-2405</identifier><identifier>EISSN: 2473-4209</identifier><identifier>DOI: 10.1118/1.2760877</identifier><identifier>CODEN: MPHYA6</identifier><language>eng</language><publisher>American Association of Physicists in Medicine</publisher><subject>Cancer ; Image analysis ; Image motion analysis ; Image registration ; Lungs ; Materials analysis ; Materials treatment ; Medical imaging ; Radiosurgery ; Therapeutics</subject><ispartof>Medical physics (Lancaster), 2007-06, Vol.34 (6), p.2451-2451</ispartof><rights>American Association of Physicists in Medicine</rights><rights>2007 American Association of Physicists in Medicine</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1118%2F1.2760877$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,780,784,1417,27924,27925,45575</link.rule.ids></links><search><creatorcontrib>Jang, S</creatorcontrib><creatorcontrib>Wu, H</creatorcontrib><creatorcontrib>Sourivong, P</creatorcontrib><creatorcontrib>Katz, S</creatorcontrib><creatorcontrib>Rosen, L</creatorcontrib><title>SU‐FF‐T‐216: Evaluation of Mid‐Treatment Tumor Motion for Hypo‐Fractionated Lung Radiosurgery Using Hi‐Art TomoTherapy System</title><title>Medical physics (Lancaster)</title><description>Purpose: To investigate the variation of the daily mid‐treatment positioning setup of the helical TomoTherapy with MV‐CT for hypofractionated lung radiosurgery cases utilizing BodyFix rigid immobilization. Methods and Materials: 54 cases treated by a hypo‐fractionated Image Guided‐Intensity Modulated Radiosurgery technique and immobilized with the BodyFix double vacuum system were analyzed retrospectively to investigate the daily variation of mid‐treatment motion, as measured daily by MV‐CT scanning. Scans were performed prior to treatment as well as at mid‐treatment. In the treated cases, a margin of 7–9mm around the CTV was utilized as a PTV. The BodyFix double vacuum system with a lung compression belt was used to minimize breathing motion and intra‐fractional tumor motion. Patients were treated daily by two fractions (e.g., 12Gy/day=6Gy/fr×2fr immediately sequentially delivered after MV‐CT guidance). Results: For all cases, multiple MV‐CT scans were performed immediately before treatment to reach optimal treatment position. After image registration and subsequent adjustment, treatment was delivered. A mid‐treatment MV‐CT scan was obtained immediately after the first‐half treatment and then table adjustments were compared. Table adjustment for mid‐treatment was longitudinal: 1.3±0.7mm and vertical: 0.9±0.5mm. The lateral recorded adjustments of 0.1±0.3mm could not be accurately determined as movements of <2mm were often omitted. It is found that slow MV‐CT scan results in a blurred target image essentially negating the effects of respiratory cycle. These results showed that the treatment margin of 7–9mm was adequate to cover the target as verified by mid‐treatment scan and that the BodyFix immobilization system provided clinically acceptable tolerance for lung radiosurgery. There was no significant difference in couch adjustment between upper and mid/lower lobe tumor locations, which may result from the robust immobilization tool. Conclusions: MV‐CT guided lung radio‐surgery using Hi‐Art TomoTherapy and BodyFix double vacuum system was clinically acceptable by minimizing the variation of patient position during the treatment.</description><subject>Cancer</subject><subject>Image analysis</subject><subject>Image motion analysis</subject><subject>Image registration</subject><subject>Lungs</subject><subject>Materials analysis</subject><subject>Materials treatment</subject><subject>Medical imaging</subject><subject>Radiosurgery</subject><subject>Therapeutics</subject><issn>0094-2405</issn><issn>2473-4209</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2007</creationdate><recordtype>article</recordtype><recordid>eNp9kL1OwzAUhS0EEqUw8AZeQUqx49iO2aqqpUitQDSdIze2S1BTV3YCysbKxjPyJDhtVxjuj879dHR1ALjGaIAxTu_wIOYMpZyfgF6ccBIlMRKnoIeQSKI4QfQcXHj_hhBihKIe-Fosfz6_J5PQslAxZvdw_C43jaxLu4XWwHmpuqPTsq70toZZU1kH53Z_N2GdtjvbeThZdJqstYKzZruGL1KV1jdurV0Ll74M0rQM5NAFF1vZ7FU7uWvhovW1ri7BmZEbr6-Osw-Wk3E2mkazp4fH0XAWFZhzHhWMcmq4IkrhlUwIJgqHr41IFWU8ViJASjJkUJowsyoEpYQJRgXihSDKkD64OfgWznrvtMl3rqyka3OM8i7DHOfHDAMbHdiPcqPbv8F8_nzkbw-8L8p6n-A_5r9SioSo</recordid><startdate>200706</startdate><enddate>200706</enddate><creator>Jang, S</creator><creator>Wu, H</creator><creator>Sourivong, P</creator><creator>Katz, S</creator><creator>Rosen, L</creator><general>American Association of Physicists in Medicine</general><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>200706</creationdate><title>SU‐FF‐T‐216: Evaluation of Mid‐Treatment Tumor Motion for Hypo‐Fractionated Lung Radiosurgery Using Hi‐Art TomoTherapy System</title><author>Jang, S ; Wu, H ; Sourivong, P ; Katz, S ; Rosen, L</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c1777-c6575f7d3dd1ba4313d1216f98d5672d9777da60f0846fbc95536965907c93df3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2007</creationdate><topic>Cancer</topic><topic>Image analysis</topic><topic>Image motion analysis</topic><topic>Image registration</topic><topic>Lungs</topic><topic>Materials analysis</topic><topic>Materials treatment</topic><topic>Medical imaging</topic><topic>Radiosurgery</topic><topic>Therapeutics</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Jang, S</creatorcontrib><creatorcontrib>Wu, H</creatorcontrib><creatorcontrib>Sourivong, P</creatorcontrib><creatorcontrib>Katz, S</creatorcontrib><creatorcontrib>Rosen, L</creatorcontrib><collection>CrossRef</collection><jtitle>Medical physics (Lancaster)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Jang, S</au><au>Wu, H</au><au>Sourivong, P</au><au>Katz, S</au><au>Rosen, L</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>SU‐FF‐T‐216: Evaluation of Mid‐Treatment Tumor Motion for Hypo‐Fractionated Lung Radiosurgery Using Hi‐Art TomoTherapy System</atitle><jtitle>Medical physics (Lancaster)</jtitle><date>2007-06</date><risdate>2007</risdate><volume>34</volume><issue>6</issue><spage>2451</spage><epage>2451</epage><pages>2451-2451</pages><issn>0094-2405</issn><eissn>2473-4209</eissn><coden>MPHYA6</coden><abstract>Purpose: To investigate the variation of the daily mid‐treatment positioning setup of the helical TomoTherapy with MV‐CT for hypofractionated lung radiosurgery cases utilizing BodyFix rigid immobilization. Methods and Materials: 54 cases treated by a hypo‐fractionated Image Guided‐Intensity Modulated Radiosurgery technique and immobilized with the BodyFix double vacuum system were analyzed retrospectively to investigate the daily variation of mid‐treatment motion, as measured daily by MV‐CT scanning. Scans were performed prior to treatment as well as at mid‐treatment. In the treated cases, a margin of 7–9mm around the CTV was utilized as a PTV. The BodyFix double vacuum system with a lung compression belt was used to minimize breathing motion and intra‐fractional tumor motion. Patients were treated daily by two fractions (e.g., 12Gy/day=6Gy/fr×2fr immediately sequentially delivered after MV‐CT guidance). Results: For all cases, multiple MV‐CT scans were performed immediately before treatment to reach optimal treatment position. After image registration and subsequent adjustment, treatment was delivered. A mid‐treatment MV‐CT scan was obtained immediately after the first‐half treatment and then table adjustments were compared. Table adjustment for mid‐treatment was longitudinal: 1.3±0.7mm and vertical: 0.9±0.5mm. The lateral recorded adjustments of 0.1±0.3mm could not be accurately determined as movements of <2mm were often omitted. It is found that slow MV‐CT scan results in a blurred target image essentially negating the effects of respiratory cycle. These results showed that the treatment margin of 7–9mm was adequate to cover the target as verified by mid‐treatment scan and that the BodyFix immobilization system provided clinically acceptable tolerance for lung radiosurgery. There was no significant difference in couch adjustment between upper and mid/lower lobe tumor locations, which may result from the robust immobilization tool. Conclusions: MV‐CT guided lung radio‐surgery using Hi‐Art TomoTherapy and BodyFix double vacuum system was clinically acceptable by minimizing the variation of patient position during the treatment.</abstract><pub>American Association of Physicists in Medicine</pub><doi>10.1118/1.2760877</doi><tpages>1</tpages></addata></record> |
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| subjects | Cancer Image analysis Image motion analysis Image registration Lungs Materials analysis Materials treatment Medical imaging Radiosurgery Therapeutics |
| title | SU‐FF‐T‐216: Evaluation of Mid‐Treatment Tumor Motion for Hypo‐Fractionated Lung Radiosurgery Using Hi‐Art TomoTherapy System |
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