|
Full Text: 
|
|
¿µ³²ÀÇ´ëÇмúÁö Vol.24_No.2 Suppl. P.S591-597, Dec. 2007
|
Original Article
|
Äܺö CT¸¦ ÀÌ¿ëÇÑ ÀüÀ̼º ³ú¾ÏÀÇ ¿µ»ó À¯µµ ¹æ»ç¼±¼ö¼ú |
Cone-Beam CT Image-Guided Radiosurgery of Brain Metastasis: Technical Note and Clinical Application
|
½Å¼¼¿ø, À±»ó¸ð*
|
¾Èµ¿º´¿ø ¾Ï¼¾ÅÍ, ¿µ³²´ëÇб³ Àǰú´ëÇÐ ¹æ»ç¼±Á¾¾çÇб³½Ç*
|
|
Ã¥ÀÓÀúÀÚ£º½Å¼¼¿ø, °æºÏ ¾Èµ¿½Ã ¼ö»óµ¿ 574-2, ¾Èµ¿º´¿ø¾Ï¼¾ÅÍ
|
Tel: (054) 840-0065, Fax: (054) 840-0115
|
E-mail: soshin@ynu.ac.kr
|
December 30, 2007
|
|
Abstract
|
|
Background£ºThis study was performed to test feasibility of CBCT(cone-beam computerized tomography) guided radiosurgery.
Materials and Methods£ºWe used CBCT which was mounted on a retractable arm at 90¡Æ to the treatment source. CBCT images were overlapped on the digitally reconstructed images from simulation CT scan. Then, 3 dimensional volumetric CT image matching was performed. If there were any positioning errors, automated patient re-positioning was done.
Results£ºA radiosurgery treatment plan was carried out with a set of specially designed multiple non-coplanar arcs. The goal of plan was to deliver single session 18 Gy at periphery of the target. We treated a patient with a solitary brain metastasis from left upper lung cancer. Serial imaging study for treatment response revealed a satisfactory result with no remarkable treatment related side effects.
Conclusion£ºCBCT image guided radiosurgery system is very simple and could be a convenient image guiding modality for stereotactic radiosurgery or fractionated radiotherapy with an acceptable geometric accuracy and radiation exposure.
|
|
Key Words: Cone-beam computerized tomography, Stereotactic radiosurgery, Brain metastasis
|
|
References |
|
|
|
1. Leksell L. The stereotaxic method and radiosurgery of the brain. Acta Chir Scan 1951 Dec;102:316.
|
|
2. Bova FJ, Meeks SL, Friedman WA. Linac radiosurgery: system requirements, procedures, and tesing. In: Khan FM, Potish RA. Treatment planning in radiation oncology. Baltimore: Williams & Wilkins; 1998. p.215-41.
|
|
3. Chan AW, Cardinale RM, Loeffler JS. Stereo- tactic irradiation. In: Perez CA, Brady LW, Halperin EC, Schmidt-Ullrich RK. Principles and practice of radiation oncology. Baltimore: Williams & Wilkins; 2004. p.410-27.
|
|
4. Shin SO, Yun SM, Yei JW, Kim SK, Moon SH, Shin HJ, et al. Dosimetric characteristics of multileaf collimator-based intensity-modulated arc therapy for stereotactic radiosurgery (Shin¡¯s Arcs). 1842, Proceeding of World Congress on Medical Physics and Biomedical Engineering; 2006 May 28; Seoul, Korea; 2006.
|
|
5. Jaffray DA, Siewerdsen JH, Wong JW, Martinez AA. Flat-panel cone-beam computed tomography for image-guided radiation therapy. Int J Radiat Oncol Biol Phys 2002 Aug 1; 53:1337-49.
|
|
6. Verellen D. Image guided patient setup. In: Bortfeld T, Schmidt-Ullrich R, De Neve W, Wazer DE. Image-guided IMRT. Berlin: Springer; 2006. p. 97-116.
|
|
7. Sorcini B, Tilikidis A. Clinical application of image-guided radiotherapy, IGRT (on the Varian OBI platform). Cancer Radiother 2006 Sep;10(5): 252-7.
|
|
8. McGee J. Use of Varian Trilogy linac and on-board imaging in developing applications of radiosurgery and hypofractionated radiotherapy. J Korean Soc Ther Radiol Oncol 2006 May 12;24(1):S36.
|
|
9. Chang J, Yenice KM, Narayana A, Gutin PH. Accuracy and feasibility of cone-beam computed tomography for stereotactic radiosurgery setup. Med Phys 2007 Jul 28;34(6):2077-84.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|