TY - JOUR
T1 - A technique that facilitates an accurate comparison between stereotactic and IMRT plans
AU - Dogan, Nesrh
AU - Leybovich, Leonid B.
AU - Sethi, Ani1
AU - Melian, E.
AU - Krasin, Matthew J.
AU - Emami, Bahman
PY - 2000/1/1
Y1 - 2000/1/1
N2 - A non-invasive localization and immobilization method that facilitates tomographic intensity-modulated radiation treatment (IMRT) of intracranial tumors with accuracy comparable to that achieved with invasive methods were developed. This method combines coordinate systems of Linac based radiosurgery (RS), stereotactic radiotherapy (SRT), and tomographic IMRT treatment planning systems (TPSs). In this method, stereotactic localization frame (BRW-LF) with the NOMOS CT pointer attached to its top is used for CT scanning. Patient is scanned from the tip of the CT Pointer to the bottom ring of the localization frame. Thus, CT slices contain fiducial marks for RS, SRT, and tomographic IMRT. Contouring of patient anatomy and target(s) is done on imaging system that can communicate with both RS and NOMOS-IMRT TPSs. Treatment planning is concurrently done for both stereotactic and IMRT methods using the same study set. This provides more accurate comparison of competing treatment plans. Same patient immobilization system is used for both treatment techniques. For IMRT patient localization, a modified Target Box replaced the original NOMOS Target Box. This Target Box is attached to the Linac Target Localization Frame when a patient is in a treatment position. For fractionated IMRT treatments, the accuracy of frame repositioning is checked before every fraction using the stereotactic Depth Helmet. This method of immobilization and localization method was clinically tested. Based on the comparison of developed SRT and IMRT treatment plans, the IMRT method was selected. Depth Helmet measurements verified that an accurate (∼1mm) repositioning of the patient was achieved.
AB - A non-invasive localization and immobilization method that facilitates tomographic intensity-modulated radiation treatment (IMRT) of intracranial tumors with accuracy comparable to that achieved with invasive methods were developed. This method combines coordinate systems of Linac based radiosurgery (RS), stereotactic radiotherapy (SRT), and tomographic IMRT treatment planning systems (TPSs). In this method, stereotactic localization frame (BRW-LF) with the NOMOS CT pointer attached to its top is used for CT scanning. Patient is scanned from the tip of the CT Pointer to the bottom ring of the localization frame. Thus, CT slices contain fiducial marks for RS, SRT, and tomographic IMRT. Contouring of patient anatomy and target(s) is done on imaging system that can communicate with both RS and NOMOS-IMRT TPSs. Treatment planning is concurrently done for both stereotactic and IMRT methods using the same study set. This provides more accurate comparison of competing treatment plans. Same patient immobilization system is used for both treatment techniques. For IMRT patient localization, a modified Target Box replaced the original NOMOS Target Box. This Target Box is attached to the Linac Target Localization Frame when a patient is in a treatment position. For fractionated IMRT treatments, the accuracy of frame repositioning is checked before every fraction using the stereotactic Depth Helmet. This method of immobilization and localization method was clinically tested. Based on the comparison of developed SRT and IMRT treatment plans, the IMRT method was selected. Depth Helmet measurements verified that an accurate (∼1mm) repositioning of the patient was achieved.
KW - Immobilization and localization
KW - Tomographic IMRT
UR - http://www.scopus.com/inward/record.url?scp=0034441663&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0034441663&partnerID=8YFLogxK
U2 - 10.1109/IEMBS.2000.898035
DO - 10.1109/IEMBS.2000.898035
M3 - Article
AN - SCOPUS:0034441663
VL - 2
SP - 1542
EP - 1545
JO - Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference
JF - Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference
SN - 1557-170X
ER -