REFERENCES
- Kirby MC, Williams PC. Measurement possibilities using an electronic portal imaging device. Radiother Oncol 1993; 29: 237–43.
- Kirby MC, Williams PC. The use of an electronic portal imaging device for exit dosimetry and quality control mea-surements. Int J Radiat Oncol Biol Phys 1995; 31: 593–603.
- Essers M, Lanson JW, Leunens G, Schnabel T, Mijnheer BJ. The accuracy of CT-based inhomogeneity corrections and in vivo dosimetry for the treatment of lung cancer. Radiother Oncol 1995; 37: 199–208.
- Weltens C, Van Dam J, Leunens G, Dutreix A, van der Schueren E. Reliability of clinical port films for measuring dose inhomogeneities in radiotherapy for head and neck tumours. Radiother Oncol 1994; 30: 167–70.
- Wong JW, Slessinger ED, Hermes RE, Offutt CJ, Oy T. Portal dose images: quantitative treatment plan verification. Int J Radiat Oncol Biol Phys 1990; 18: 1455–63.
- Ying X, Geer LY, Wong JW. Portal dose images II: patient dose estimation. Int J Radiat Oncol Biol Phys 1990; 18: 1465–75.
- Hansen VN, Evans PM, Swindell W. The application of transit dosimetry to precision radiotherapy. Med Phys 1996; 23: 713–21.
- Boellaard R, van Herk M, Uiterwaal H, Mijnheer B. Two-di-mensional exit dosimetry using a liquid-filled electronic portal imaging device and a convolution model. Radiother Oncol 1997; 44: 149–57.
- Swindell W, Evans PM. Scattered radiation in portal images: a Monte-Carlo simulation and a simple physical model. Med Phys 1996; 23: 63–73.
- Dixon RL, Ekstrand KE, Ferre C. Compensating filter design using megavoltage radiography. Int .1- Radiat Oncol Biol Phys 1979; 5: 281–7.
- Yin FF, Schell MC, Rubin P. A technique of automatic compensator design for lung inhomogeneities correction using an electronic portal imaging device. Med Phys 1994; 21: 1729–32.
- Roback DM, Gerbi BJ. Evaluation of electronic portal imag-ing device for missing tissue compensator design and verifica-tion. Med Phys 1995; 22: 2029–34.
- Webb S. The physics of three-dimensional radiation therapy. Med Sci Ser IOP 1993; 246–283.
- Heijmen BJM, Plasma KL, Kroonwijk M, et al. Portal dose measurements in radiotherapy using an electronic portal imaging device (EPID). Phys Med Biol 1995; 40: 1943–55.
- Dirkx M, Kroonwijk M, de Boer JC, Heijmen BJ. Daily dosimetric quality control of the MM50 Racetrack Microtron using an electronic imaging device. Radiother Oncol 1995; 37: 55–60.