Ecliptic method for the determination of backscatter into the beam monitor chambers in photon beams of medical accelerators

Physics in Medicine and Biology

Volumn 52, Issue 6, 2007, Pages 1647-1658

  Sanz, Darío Esteban ^a   Alvarez, Guillermo Daniel ^a   Nelli, Flavio Enrico ^a  

^a Argentina   (Argentina)

Author keywords

[No Author keywords available]

Indexed keywords

DATA ACQUISITION; DOSIMETERS; LIGHT; LINEAR ACCELERATORS; OPTICAL COLLIMATORS; PHOTONS;

BEAM MONITOR CHAMBERS; ECLIPTIC METHOD; PHOTON BEAMS; UNCERTAINTY ASSESSMENT;

BACKSCATTERING;

COBALT 60;

ALGORITHM; ARTICLE; CALCULATION; COLLIMATOR; CORRELATION ANALYSIS; DOSIMETRY; ENERGY; PHOTON; PRIORITY JOURNAL; QUALITATIVE ANALYSIS;

ALGORITHMS; COBALT RADIOISOTOPES; ELECTRONS; EQUIPMENT DESIGN; IONS; MODELS, THEORETICAL; PARTICLE ACCELERATORS; PHOTONS; RADIOMETRY; RADIOTHERAPY DOSAGE; RADIOTHERAPY, HIGH-ENERGY; SCATTERING, RADIATION; X-RAYS;

EID: 34247489391     PISSN: 00319155     EISSN: 13616560     Source Type: Journal    
DOI: 10.1088/0031-9155/52/6/007     Document Type: Article

References (13)

1. Ahnesjo A, Knoos T and Montelius A 1992 Application to the convolution method for calculation of output factors for therapy photon beams Med. Phys. 19 295-301
2. Duzenli C, McClean B and Field C 1993 Backscatter into the beam monitor chamber: implications for dosimetry of asymmetric collimators Med. Phys. 20 363-67
3. Hounsell A R 1998 Monitor chamber backscatter for intensity modulated radiation therapy using multileaf collimators Phys. Med. Biol. 43 445-54
4. Huang P-H, Chu J and Bjärngard B E 1987 The effect of collimator backscatter radiation on photon output of linear accelerators Med. Phys. 14 268-9
5. Kubo H 1989 Telescopic measurement of backscattered radiation from secondary collimator jaws to a beam monitor chamber using a pair of slits Med. Phys. 16 295-8
6. Lam K L, Muthuswamy M S and Ten Haken R K 1998 Measurement of backscatter to the monitor chamber of medical accelerators using target charge Med. Phys. 25 334-8
7. Liu H H, Mackie T R and McCullough E C 2000 Modeling photon output caused by backscattered radiation into the monitor chamber from collimator jaws using a Monte Carlo technique Med. Phys. 27 737-44
8. Luxton G and Astrahan M A 1988 Output factor constituents of high energy photon beams Med. Phys. 15 88-91
9. Patterson M S and Shragge P C 1981 Characteristics of an 18 MV photon beam from a Therac 20 Medical Linear Accelerator Med. Phys. 8 312-8
10. Scrimger J W 1977 Backscatter from high atomic number materials in high energy photon beams Radiology 124 815-7
11. Verhaegen F, Symonds-Tayler R, Liu H H and Nahum A E 2000 Backscatter towards the monitor ion chamber in high-energy photon and electron beams: charge integration versus Monte Carlo simulation Phys. Med. Biol. 45 3159-70
12. Watts D L and Ibbott G S 1987 Measurement of beam current and evaluation of scatter production in a 18-MeV accelerator Med. Phys. 14 662-4
13. Yu M K, Sloboda R S and Mansour F 1996 Measurement of photon beam backscatter from collimators to the beam monitor chambers using target-current-pulse-counting and telescope techniques Phys. Med. Biol. 41 1107-17