Image guidance in radiation oncology treatment planning: the role of imaging technologies on the planning process.

Radiation therapy has evolved from 2-dimensional (2D) to 3-dimensional (3D) treatments and, more recently, to intensity-modulated radiation therapy and image-guided radiation therapy. Improvements in imaging have enabled improvements in targeting and treatment. As computer-processing power has improved during the past few decades, it has facilitated developments in both imaging and treatment. The historical role of imaging from 2D to image-guided radiation therapy is reviewed here. Examples of imaging technologies such as positron emission tomography and magnetic resonance imaging are provided. The role of these imaging technologies, organ motion management approaches and their potential impacts on radiation therapy are described.

[1]  David W Townsend,et al.  PET/CT today and tomorrow. , 2004, Journal of nuclear medicine : official publication, Society of Nuclear Medicine.

[2]  Mack Roach,et al.  Advances in Radiation Therapy: Conventional to 3D, to IMRT, to 4D, and Beyond , 2005, CA: a cancer journal for clinicians.

[3]  Karin Haustermans,et al.  PET-based treatment planning in radiotherapy: a new standard? , 2007, Journal of nuclear medicine : official publication, Society of Nuclear Medicine.

[4]  E Yorke,et al.  Four-dimensional (4D) PET/CT imaging of the thorax. , 2004, Medical physics.

[5]  Dwight E Heron,et al.  Advances in image-guided radiation therapy--the role of PET-CT. , 2006, Medical dosimetry : official journal of the American Association of Medical Dosimetrists.

[6]  Cedric X. Yu,et al.  Intensity-modulated arc therapy with dynamic multileaf collimation: an alternative to tomotherapy. , 1995, Physics in medicine and biology.

[7]  D W Townsend,et al.  A combined PET/CT scanner: the choices. , 2001, Journal of nuclear medicine : official publication, Society of Nuclear Medicine.

[8]  Icru.  Prescribing, recording, and reporting photon beam therapy , 1993 .

[9]  T. Guerrero,et al.  Acquiring 4D thoracic CT scans using a multislice helical method. , 2004, Physics in medicine and biology.

[10]  A. Pevsner,et al.  Quantitation of respiratory motion during 4D-PET/CT acquisition. , 2004, Medical physics.

[11]  T. Delaney,et al.  Prescribing, Recording, and Reporting Proton-Beam Therapy , 2009 .

[12]  Martin J Murphy,et al.  Tracking moving organs in real time. , 2004, Seminars in radiation oncology.

[13]  D. Visvikis,et al.  The role of PET/CT scanning in radiotherapy planning. , 2006, The British journal of radiology.

[14]  Koichi Yamazaki,et al.  Real‐time tumor‐tracking radiation therapy for lung carcinoma by the aid of insertion of a gold marker using bronchofiberscopy , 2002, Cancer.

[15]  S. Webb.  The physical basis of IMRT and inverse planning. , 2003, The British journal of radiology.

[16]  H. Hricak,et al.  Prostate volumes defined by magnetic resonance imaging and computerized tomographic scans for three-dimensional conformal radiotherapy. , 1996, International journal of radiation oncology, biology, physics.

[17]  Douglas L. Jones.  ICRU Report 50—Prescribing, Recording and Reporting Photon Beam Therapy , 1994 .

[18]  E. Yorke,et al.  Deep inspiration breath hold and respiratory gating strategies for reducing organ motion in radiation treatment. , 2004, Seminars in radiation oncology.

[19]  Curtis B Caldwell,et al.  The impact of (18)FDG-PET on target and critical organs in CT-based treatment planning of patients with poorly defined non-small-cell lung carcinoma: a prospective study. , 2002, International journal of radiation oncology, biology, physics.

[20]  V S Khoo,et al.  New developments in MRI for target volume delineation in radiotherapy. , 2006, The British journal of radiology.

[21]  C C Ling,et al.  Towards multidimensional radiotherapy (MD-CRT): biological imaging and biological conformality. , 2000, International journal of radiation oncology, biology, physics.

[22]  S. Spirou,et al.  Generation of arbitrary intensity profiles by dynamic jaws or multileaf collimators. , 1994, Medical physics.