Technical Note: Potential errors in optical density measurements due to scanning side in EBT and EBT2 Gafchromic film dosimetry

2010 ◽  
Vol 37 (4) ◽  
pp. 1565-1570 ◽  
Author(s):  
Joannie Desroches ◽  
Hugo Bouchard ◽  
Frédéric Lacroix
Keyword(s):  
Optical Density ◽  
Technical Note ◽  
Film Dosimetry ◽  
Density Measurements ◽  
Gafchromic Film

Technical Note: Impact of region of interest size and location in Gafchromic film dosimetry

2018 ◽  
Vol 45 (5) ◽  
pp. 2329-2336 ◽  
Author(s):  
Neda Gholizadeh Sendani ◽  
Alireza Karimian ◽  
Clara Ferreira ◽  
Parham Alaei
Keyword(s):  
Region Of Interest ◽  
Technical Note ◽  
Film Dosimetry ◽  
Gafchromic Film

Measurements of the Fe3+ diffusion coefficient in Fricke Xylenol gel using optical density measurements

2014 ◽  
Vol 90 ◽  
pp. 241-244 ◽  
Author(s):  
Lucas Nonato de Oliveira ◽  
Francisco Glaildo Almeida Sampaio ◽  
Marcos Vasques Moreira ◽  
Adelaide de Almeida
Keyword(s):  
Diffusion Coefficient ◽  
Optical Density ◽  
Density Measurements

Precise EBT3 Gafchromic film dosimetry for Grid therapy

2019 ◽  
Vol 121 ◽  
pp. 69-76 ◽  
Author(s):  
Somayeh Gholami ◽  
Hassan Ali Nedaie ◽  
Ali S. Meigooni
Keyword(s):  
Film Dosimetry ◽  
Gafchromic Film

scholarly journals Multiple Scanning Effects in Radiochromic Film Dosimetry: A Method to Reduce the Increase of Optical Density

2020 ◽  
Vol 09 (01) ◽  
pp. 34-41
Author(s):  
Benjamin Foe Ngono ◽  
Alexandre Ngwa Ebongue ◽  
Daniel Bongu ◽  
Albert Mouelle Sone ◽  
Moise G. Kwato Njock
Keyword(s):  
Optical Density ◽  
Radiochromic Film ◽  
Film Dosimetry

GAFChromic film dosimetry with a flatbed color scanner for Leksell Gamma Knife therapy

2004 ◽  
Vol 31 (5) ◽  
pp. 1243-1248 ◽  
Author(s):  
M. Yamauchi ◽  
T. Tominaga ◽  
O. Nakamura ◽  
R. Ueda ◽  
M. Hoshi
Keyword(s):  
Gamma Knife ◽  
Film Dosimetry ◽  
Gafchromic Film ◽  
Color Scanner ◽  
Gamma Knife Therapy

Secondary Bone Grafting of Alveolar Clefts: A Densitometric Comparison of Iliac Crest and Tibial Bone Grafts

2001 ◽  
Vol 38 (1) ◽  
pp. 11-14 ◽  
Author(s):  
V. Sivarajasingam ◽  
G. Pell ◽  
M. Morse ◽  
J. P. Shepherd
Keyword(s):  
Bone Density ◽  
Optical Density ◽  
Bone Grafting ◽  
Iliac Crest ◽  
Objective Assessment ◽  
Bone Grafts ◽  
Orthodontic Appliances ◽  
Density Measurements ◽  
Tibial Bone ◽  
Alveolar Bone Grafting

Objective To evaluate changes in the optical density of secondary alveolar cleft bone grafts obtained from two different donor sites over time and to determine whether one donor site gives a higher recipient bone density than the other. Methods A prospective study was performed evaluating 40 healthy patients with congenital cleft lip and palate undergoing secondary alveolar bone grafting, 20 (14 boys and 6 girls) having iliac crest and 20 (12 boys and 8 girls) receiving tibial bone grafts. Bone harvest and grafting was carried out by one operator (G.P.). Optical density of iliac and tibial grafts measured using a computerized densitometer, was compared at 6 days, 6 weeks, and 3 months. Due to interference from orthodontic appliances, optical density measurements for 16 subjects were not possible, and these patients were excluded from the study. The length of hospital stay postoperatively for both grafting procedures were recorded. Results A significant decrease in relative bone density was demonstrated during the 3-month postoperative period in both iliac and tibial bone graft groups (p < .05). The difference in densities between iliac crest and tibial groups were not significantly different at any of the time points (paired t test, p > .05). Subjects undergoing iliac crest grafts stayed an average of 5 days in the hospital postoperatively, compared with subjects with tibial grafts who stayed an average of 3 days postoperatively. Conclusion Optical density measurements of bone grafted into alveolar clefts, reported here for the first time, provide a valuable objective assessment of graft progress. Tibial and iliac crest grafts gave similar optical densities at recipient sites over the first 3 months. Iliac crest grafts required significantly longer postoperative stay; an important consideration in selecting donor sites for secondary bone grafting.

scholarly journals Characterization of the effect of MRI on Gafchromic film dosimetry

2015 ◽  
Vol 16 (6) ◽  
pp. 325-332 ◽  
Author(s):  
Meral L. Reyhan ◽  
Ting Chen ◽  
Miao Zhang
Keyword(s):  
Film Dosimetry ◽  
Gafchromic Film
Sign in / Sign up

Export Citation Format

Share Document