Author, Subjects, Keywords

Cited Author

 
 
   » By Author or Editor
 » Browse Author by Alphabet
 » By Journal
 » By Subjects
 » Malaysian Journals
 » By Type
 » By Year
 » By Latest Additions
 
 
   » By Author
 » Top 20 Authors
 » Top 20 Article
 » Top Journal Cited
 » Top Article Cited
 » Journal Citation Statistics
 » Usage Since Sept 2007


 
 
 

Login | Create Account

Dose Optimisation during Imaging in Radiotherapy

Ravindran, P., (2007) Dose Optimisation during Imaging in Radiotherapy. Biomedical Imaging and Intervention Journal, 3 (2).

[img]
Preview
PDF - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
861Kb

Official URL: http://www.biij.org/2007/2/e23/e23.pdf

Affiliations

Christian Medical College, Vellore, India

Abstract

The desire to increase the precision in radiotherapy delivery has led to the development of advanced imaging systems such as amorphous silicon (a-Si)-based electronic portal imaging, and kV and MV cone beam CT. These are used prior to the delivery of radiation to visualise the organ to be treated and to ensure that the patient setup and treatment delivery are accurate. However, little attention has been given to the dose received by adjacent normal tissues during these imaging procedures. Though these doses are very small compared to the dose delivered during radiotherapy, the involvement of normal tissues and the concern that these could increase the probability of stochastic effect, mainly the induction of secondary malignancy, cannot be ignored. This article reviews some work on the doses received during imaging in radiotherapy and the methods to optimise the same.

Item Type:Journal
Keywords:Animal irradiator; rodent irradiation; radiobiology; radiation beam measurement
Subjects:R Medicine, Dentistry, Pharmacy, Nursing
ID Code:4930

1. Herman MG, Balter JM, Jaffray DA et al. Clinical use of electronic portal imaging: report of AAPM Radiation Therapy Committee Task Group 58. Med Phys 2001; 28(5):712-37.

2. Lawrence E, Reinstein HIA, Peter JB et al. Radiotherapy Portal Imaging Quality Report of AAPM. Report of AAPM Task Group No. 28. 1987. (AAPM REPORT; vol 24).

3. Langmack KA. Portal imaging. Br J Radiol 2001; 74(885):789-804.

4. Kudchadker RJ, Chang EL, Bryan F et al. An evaluation of radiation exposure from portal films taken during definitive course of pediatric radiotherapy. Int J Radiat Oncol Biol Phys 2004; 59(4):1229-35.

5. Jaffray DA, Siewerdsen JH, Wong JW et al. Flat-panel cone-beam computed tomography for image-guided radiation therapy. Int J Radiat Oncol Biol Phys 2002; 53(5):1337-49.

6. Waddington SP, McKenzie AL. Assessment of effective dose from concomitant exposures required in verification of the target volume in radiotherapy. Br J Radiol 2004; 77(919):557-61.

7. Crooks I, Fallone BG. Contrast enhancement of portal images by selective histogram equalization. Med Phys 1993; 20(1):199-204.

8. Whittington R, Bloch P, Hutchinson D et al. Verification of prostate treatment setup using computed radiography for portal imaging. J Appl Clin Med Phys 2002; 3(2):88-96.

9. Jaffray DA, Chawla K, Yu C et al. Dual-beam imaging for online verification of radiotherapy field placement. Int J Radiat Oncol Biol Phys 1995; 33(5):1273-80.

10. Baily NA, Horn RA, Kampp TD. Fluoroscopic visualization of megavoltage therapeutic x ray beams. Int J Radiat Oncol Biol Phys 1980; 6(7):935-9.

11. Van Dyk J. The modern technology of radiation oncology: A compendium for medical physicists and radiation oncologists. Madison, Wis.: Medical Physics Pub., 1999.

12. Vetterli D, Riem H, Aebersold DM et al. Introduction of a novel dose saving acquisition mode for the PortalVision aS500 EPID to facilitate on-line patient setup verification. Med Phys 2004; 31(4):828-31.

13. Midgley S, Millar RM, Dudson J. A feasibility study for megavoltage cone beam CT using a commercial EPID. Phys Med Biol 1998; 43(1):155-69.

14. Mosleh-Shirazi MA, Evans PM, Swindell W et al. A cone-beam megavoltage CT scanner for treatment verification in conformal radiotherapy. Radiother Oncol 1998; 48(3):319-28.

15. Ford EC, Chang J, Mueller K et al. Cone-beam CT with megavoltage beams and an amorphous silicon electronic portal imaging device: potential for verification of radiotherapy of lung cancer. Med Phys 2002; 29(12):2913-24.

16. Siewerdsen JH, Jaffray DA. Cone-beam computed tomography with a flat-panel imager: magnitude and effects of x-ray scatter. Med Phys 2001; 28(2):220-31.

17. Groh BA, Siewerdsen JH, Drake DG et al. A performance comparison of flat-panel imager-based MV and kV cone-beam CT. Med Phys 2002; 29(6):967-75.

18. Seppi EJ, Munro P, Johnsen SW et al. Megavoltage cone-beam computed tomography using a high-efficiency image receptor. Int J Radiat Oncol Biol Phys 2003; 55(3):793-803.

19. Pouliot J, Bani-Hashemi A, Chen J et al. Low-dose megavoltage cone-beam CT for radiation therapy. Int J Radiat Oncol Biol Phys 2005; 61(2):552-60.

20. Islam MK, Purdie TG, Norrlinger BD et al. Patient dose from kilovoltage cone beam computed tomography imaging in radiation therapy. Med Phys 2006; 33(6):1573-82.

21. Ravindran P, Islam M, Jaffray D. Investigation of Dose Reduction Strategies for Image Guidance with KV-CBCT in Radiation Therapy. Med Phys 2006; 33:2221.

22. Sykes JR, Amer A, Czajka J et al. A feasibility study for image guided radiotherapy using low dose, high speed, cone beam X-ray volumetric imaging. Radiother Oncol 2005; 77(1):45-52.

Repository Staff Only: item control page
 
 
 
 
 
 
© Copyright 2007 MyAIS Faculty of Computer Science and Information Technology, University of Malaya – All Rights Reserved. Malaysian Abstracting and Indexing System is powered by EPrints 3 which is developed by the School of Electronics and Computer Science at the University of Southampton. More information and software credits.