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Bedos L, Sandmeyer L, Campbell J, Grahn BH. Prevalence of pre-iridal monocellular and fibrovascular membranes in canine globes affected with congenital glaucoma associated with anterior segment dysgenesis, primary glaucoma associated with goniodysgenesis, and secondary glaucoma. Front Vet Sci 2024; 11:1289283. [PMID: 38444777 PMCID: PMC10912326 DOI: 10.3389/fvets.2024.1289283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Accepted: 02/05/2024] [Indexed: 03/07/2024] Open
Abstract
Objectives The objectives of this study were to (i) evaluate the prevalence of pre-iridal monocellular and fibrovascular membranes in canine globes affected with congenital glaucoma associated with anterior segment dysgenesis (ASD), primary glaucoma associated with goniodysgenesis (GD), and secondary glaucoma, and (ii) examine the associations between monocellular and fibrovascular membranes by breed, gender, age and histopathologic ocular changes on light microscopic examination. Methods Records of dogs who had eyes enucleated due to blindness and uncontrolled glaucoma were reviewed. Glaucoma was categorized clinically and histologically into three groups: congenital/ASD, primary/GD, and secondary glaucoma. The presence or absence and type of pre-iridal membrane (monocellular or fibrovascular) and other intraocular histologic findings were reviewed and compared statistically for each group. Results In total, 108 canine globes (101 dogs) were included. Pre-iridal monocellular membranes were identified with light microscopy in 10 out of 19 congenital/ASD, 29 out of 40 primary, and 23 out of 49 secondary glaucoma globes. Fibrovascular membranes were observed in 3 out of 19 congenital/ASD, 9 out of 40 in primary, and 24 out of 49 secondary glaucoma globes. There were no associations between the type of membrane and breed, gender, or age. Peripheral anterior synechiae were more common in globes with fibrovascular membranes, and uveal atrophy was more common in globes with monocellular membranes. Conclusion Pre-iridal monocellular membranes are common in all types of canine glaucoma. They are identified with light microscopy most easily in cases of primary glaucoma, and they are masked by pre-iridal fibrovascular membranes in other forms of glaucoma.
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Affiliation(s)
- Leila Bedos
- Department of Veterinary Clinical Sciences, Iowa State University, Ames, IA, United States
| | - Lynne Sandmeyer
- Departments of Small Animal Clinical Sciences and Large Animal Clinical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, SK, Canada
| | - John Campbell
- Departments of Small Animal Clinical Sciences and Large Animal Clinical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, SK, Canada
| | - Bruce H. Grahn
- Departments of Small Animal Clinical Sciences and Large Animal Clinical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, SK, Canada
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Page LE, Kubai MA, Allbaugh RA, Bedos L, Roy MM, Mochel JP, Sebbag L. Increased drug concentration and repeated eye drop administration as strategies to optimize topical drug delivery: A fluorophotometric study in healthy dogs. Vet Ophthalmol 2023. [PMID: 37353948 DOI: 10.1111/vop.13125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 05/28/2023] [Accepted: 06/12/2023] [Indexed: 06/25/2023]
Abstract
OBJECTIVES Determine tear film kinetics with different fluorescein concentrations and repeated eye drop administration at various time intervals. ANIMALS STUDIED Six healthy Beagles. PROCEDURES Six experiments were conducted on separate days: single eye drop administration (control) or two separate eye drops administered at 30 s, 1, 2, 5, and 10 min intervals. For each experiment, one eye received 0.3% fluorescein solution while the other eye received 1% fluorescein solution, and tear fluid was collected with capillary tubes at 0, 1, 5, 10, 20, 30, 40, 50, 60, 90, 120, and 180 min. Fluorescein concentrations were measured using automated fluorophotometry. RESULTS Compared with 0.3% solution, eyes receiving 1% fluorescein solution had significantly higher tear film concentrations (p ≤ .046) and the area-under-the-fluorescein-time curve was twofold greater (p = .005). Compared with control: (i) Tear film concentrations were significantly higher for up to 20 min when repeating administration 30 s to 5 min after the first drop (p ≤ .006); (ii) The highest increase in area-under-the-curve was obtained with 2 and 5 min intervals for 0.3% (+109%-130%) and 1% solutions (+153%-157%); (iii) The highest increase in median precorneal retention time (defined as tear film concentration < 5% from baseline values) was obtained with 5 min intervals for 0.3% (55 min vs. 15 min in control) and 2-5 min intervals for 1% solutions (50 min vs. 25 min in control). CONCLUSIONS Drug delivery to the ocular surface can be enhanced by using more concentrated formulations and/or by repeating eye drop administration 2-5 min after the first dose.
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Affiliation(s)
- Lauren E Page
- Department of Veterinary Clinical Sciences, Iowa State University, College of Veterinary Medicine, Ames, Iowa, USA
| | - Melissa A Kubai
- Department of Veterinary Clinical Sciences, Iowa State University, College of Veterinary Medicine, Ames, Iowa, USA
| | - Rachel A Allbaugh
- Department of Veterinary Clinical Sciences, Iowa State University, College of Veterinary Medicine, Ames, Iowa, USA
| | - Leila Bedos
- Department of Veterinary Clinical Sciences, Iowa State University, College of Veterinary Medicine, Ames, Iowa, USA
| | - Mackenzie M Roy
- Department of Veterinary Clinical Sciences, Iowa State University, College of Veterinary Medicine, Ames, Iowa, USA
| | - Jonathan P Mochel
- SMART Pharmacology, Department of Biomedical Sciences, Iowa State University, College of Veterinary Medicine, Ames, Iowa, USA
| | - Lionel Sebbag
- Department of Veterinary Clinical Sciences, Iowa State University, College of Veterinary Medicine, Ames, Iowa, USA
- SMART Pharmacology, Department of Biomedical Sciences, Iowa State University, College of Veterinary Medicine, Ames, Iowa, USA
- Koret School of Veterinary Medicine, The Hebrew University of Jerusalem, Rehovot, Israel
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Bedos L, Allbaugh RA, Roy M, Kubai MA, Sebbag L. Precorneal retention time of ocular lubricants measured with fluorophotometry in healthy dogs. Vet Ophthalmol 2023; 26 Suppl 1:81-88. [PMID: 36749146 DOI: 10.1111/vop.13065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 12/18/2022] [Accepted: 01/20/2023] [Indexed: 02/08/2023]
Abstract
OBJECTIVE Determine the precorneal retention time of five different ocular lubricants commonly used in dogs. ANIMALS STUDIED Six healthy Beagle dogs (n = 12 eyes). PROCEDURES Five ocular lubricants were studied: Artificial Tears Solution® (1.4% polyvinyl alcohol), I-Drop® Vet Plus (0.25% hyaluronate), Optixcare® Eye Lube Plus (0.25% hyaluronate), Systane® Ultra (0.4% polyethylene glycol 400 and 0.3% propylene glycol), and Artificial Tears Ointment® (mineral oil/white petrolatum). Each lubricant was mixed with 10% sodium fluorescein to achieve 1% fluorescein formulations. Following topical administration of 35 mg in each eye, tear fluid was collected with capillary tubes at selected times (0, 1, 5, 10, 20, 30, 40, 50, 60, 90, 120, 180 min) and fluorescein concentrations were measured with a computerized scanning ocular fluorophotometer. RESULTS Tear fluorescence was significantly greater with Artificial Tears Ointment® compared with other lubricant formulations from 1 to 20 min post-administration. Median (range) precorneal retention times were significantly different among the 5 lubricants, ranging from 40 minutes (20-90 min) for Artificial Tears Ointment®, 35 min (20-90 min) for Systane® Ultra, 30 min (10-60 min) for I-Drop® Vet Plus, 25 min (10-60 min) for Optixcare® Eye Lube Plus, and 10 min (10-20 min) for Artificial Tears Solution®. Precorneal retention time was significantly lower for Artificial Tears Solution® compared with the other 4 formulations. CONCLUSIONS This study established normative data for the retention time of common lubricants on the ocular surface of dogs, which may be used to guide clinicians with their choice of lubricant and frequency of administration.
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Affiliation(s)
- L Bedos
- Department of Veterinary Clinical Sciences, Iowa State University, College of Veterinary Medicine, Ames, Iowa, USA
| | - R A Allbaugh
- Department of Veterinary Clinical Sciences, Iowa State University, College of Veterinary Medicine, Ames, Iowa, USA
| | - M Roy
- Department of Veterinary Clinical Sciences, Iowa State University, College of Veterinary Medicine, Ames, Iowa, USA
| | - M A Kubai
- Department of Veterinary Clinical Sciences, Iowa State University, College of Veterinary Medicine, Ames, Iowa, USA
| | - L Sebbag
- Department of Veterinary Clinical Sciences, Iowa State University, College of Veterinary Medicine, Ames, Iowa, USA.,Koret School of Veterinary Medicine, The Hebrew University of Jerusalem, Rehovot, Israel
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Bedos L, Wickham H, Gabriel V, Zdyrski C, Allbaugh RA, Sahoo DK, Sebbag L, Mochel JP, Allenspach K. Culture and characterization of canine and feline corneal epithelial organoids: A new tool for the study and treatment of corneal diseases. Front Vet Sci 2022; 9:1050467. [PMID: 36406087 PMCID: PMC9672346 DOI: 10.3389/fvets.2022.1050467] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Accepted: 10/19/2022] [Indexed: 11/06/2022] Open
Abstract
In this study, we isolated and cultured canine and feline 3D corneal organoids. Samples derived from corneal limbal epithelium from one canine and one feline patient were obtained by enucleation after euthanasia. Stem cell isolation and organoid culture were performed by culturing organoids in Matrigel. Organoids were subsequently embedded in paraffin for further characterization. The expression of key corneal epithelial and stromal cell markers in canine and feline organoids was evaluated at the mRNA level by RNA-ISH and at the protein level by immunofluorescence (IF) and immunohistochemistry (IHC), while histochemical analysis was performed on both tissues and organoids using periodic-acid Schiff (PAS), Sirius Red, Gomori's Trichrome, and Colloidal Iron stains. IF showed consistent expression of AQP1 within canine and feline organoids and tissues. P63 was present in canine tissues, canine organoids, and feline tissues, but not in feline organoids. Results from IHC staining further confirmed the primarily epithelial origin of the organoids. Canine and feline 3D corneal organoids can successfully be cultured and maintained and express epithelial and stem cell progenitor markers typical of the cornea. This novel in vitro model can be used in veterinary ophthalmology disease modeling, corneal drug testing, and regenerative medicine.
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Affiliation(s)
- Leila Bedos
- Department of Veterinary Clinical Sciences, Iowa State University, Ames, IA, United States
| | - Hannah Wickham
- SMART Lab, Department of Biomedical Sciences, Iowa State University, Ames, IA, United States
| | - Vojtech Gabriel
- SMART Lab, Department of Biomedical Sciences, Iowa State University, Ames, IA, United States
| | - Christopher Zdyrski
- SMART Lab, Department of Biomedical Sciences, Iowa State University, Ames, IA, United States
| | - Rachel A. Allbaugh
- Department of Veterinary Clinical Sciences, Iowa State University, Ames, IA, United States
| | - Dipak Kumar Sahoo
- Department of Veterinary Clinical Sciences, Iowa State University, Ames, IA, United States
| | - Lionel Sebbag
- Department of Veterinary Clinical Sciences, Iowa State University, Ames, IA, United States
- Koret School of Veterinary Medicine, Hebrew University of Jerusalem, Rehovot, Israel
| | - Jonathan P. Mochel
- SMART Lab, Department of Biomedical Sciences, Iowa State University, Ames, IA, United States
- 3D Health Solutions Inc., Ames, IA, United States
| | - Karin Allenspach
- Department of Veterinary Clinical Sciences, Iowa State University, Ames, IA, United States
- SMART Lab, Department of Biomedical Sciences, Iowa State University, Ames, IA, United States
- 3D Health Solutions Inc., Ames, IA, United States
- *Correspondence: Karin Allenspach
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Bedos L, Grahn BH, Philibert H, Campbell J, Sandmeyer L. Histologic, immunohistochemical, and scanning electron microscopic comparison of pre-iridal monocellular and fibrovascular membranes in normal and glaucomatous canine globes. Vet Ophthalmol 2021; 24:361-373. [PMID: 33904639 DOI: 10.1111/vop.12894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 04/06/2021] [Accepted: 04/12/2021] [Indexed: 11/29/2022]
Abstract
OBJECTIVES (i) To evaluate immunohistochemical labeling of pre-iridal monocellular and fibrovascular membranes and (ii) describe the light and scanning electron microscopic (SEM) characteristics of these membranes in glaucomatous and normal/control canine globes. MATERIALS AND METHODS All globes were evaluated with light microscopy. Immunohistochemical labeling for CD18, Smooth muscle actin (SMA), and CD117 was completed on 40 canine globes with congenital/anterior segment dysgenesis-associated glaucoma (n = 10), primary/goniodysgenesis-associated glaucoma (n = 10), secondary glaucoma (n = 10), and normal/control globes (n = 10). SEM was completed on 10 globes: 5 with monocellular membranes, 3 with fibrovascular membranes, and 2 without a histologically detectable membrane. RESULTS Monocellular membranes were detected in all normal/control globes with light microscopy and appeared to be morphologically very similar to those in diseased globes. CD18 labeling was detected in 9/10 monocellular membranes in normal/control globes, 15/23 monocellular, and 7/8 fibrovascular membranes in globes with glaucoma. SMA and CD117 labeling was not detected in monocellular membranes of normal/control globes. SMA was expressed in 10/23 monocellular and 7/8 fibrovascular membranes of glaucomatous globes. CD117 was expressed in 7/23 monocellular and 5/8 fibrovascular membranes of glaucomatous globes. SEM of monocellular membranes revealed a continuous sheet of mostly spindle cells and few individual round cells that extended over the anterior iris face in normal/control and all glaucomatous globes. CONCLUSION Pre-iridal monocellular membranes are a normal component of the anterior iris surface, and CD18 immunoreactivity suggests some cells within these are of leukocytic origin. SMA and CD117 labeling of monocellular membranes in glaucomatous, but not normal/control globes, suggest metaplastic cellular change secondary to intraocular pathology related to glaucoma.
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Affiliation(s)
- Leila Bedos
- Department of Small Animal Clinical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, SK, Canada.,Lloyd Veterinary Medical Center, Iowa State University, Ames, IA, USA
| | - Bruce H Grahn
- Department of Small Animal Clinical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, SK, Canada.,3WCVM Veterinary Medical Centre, University of Saskatchewan, Saskatoon, SK, Canada
| | - Helene Philibert
- Department of Pathology, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, SK, Canada
| | - John Campbell
- 3WCVM Veterinary Medical Centre, University of Saskatchewan, Saskatoon, SK, Canada.,Department of Large Animal Clinical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, SK, Canada
| | - Lynne Sandmeyer
- Department of Small Animal Clinical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, SK, Canada.,3WCVM Veterinary Medical Centre, University of Saskatchewan, Saskatoon, SK, Canada
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Bedos L, Tetas R, Crespo V, Shea A. Presumed optic neuritis of non-infectious origin in dogs treated with immunosuppressive medication: 28 dogs (2000-2015). J Small Anim Pract 2020; 61:676-683. [PMID: 32989769 DOI: 10.1111/jsap.13233] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 06/18/2020] [Accepted: 08/19/2020] [Indexed: 11/29/2022]
Abstract
OBJECTIVE To describe the clinical findings, magnetic resonance imaging features, management and outcome of canine cases with presumed optic neuritis of non-infectious origin that were presented to a UK referral centre from January 2000 to December 2015. MATERIALS AND METHODS The clinical database was searched for optic neuritis. Dogs with acute-onset vision impairment, systemic immunosuppressive treatment and follow-up of ≥6 months were included. Information collected included: age; gender; breed; clinical signs and duration; physical, ophthalmic and neurological examination findings; concurrent systemic disease; and results of electroretinogram, magnetic resonance imaging, cerebrospinal fluid analysis, polymerase chain reaction and serology testing for Toxoplasma gondii, Neospora caninum and canine distemper virus, haematology and serum biochemistry profiles, abdominal ultrasound, thoracic radiography, treatment and outcome. RESULTS Twenty-eight dogs were included, with a total of 48 affected optic nerves. Age at presentation ranged from 6 months to 10.5 years. Fundoscopic evidence of optic nerve disease was present in 34 of 48 (71%) optic nerves. Magnetic resonance imaging revealed enlargement of 32 of 48 (67%) nerves and contrast enhancement of 28 of 48 (58%) nerves. Cerebrospinal fluid analysis performed in 25 of 28 (89%) dogs revealed pleocytosis (>5 nucleated cells/uL) in 11 of 25 (44%) and increased protein (>0.35 g/L) in 11 of 25 (44%). Immunosuppressive prednisolone was administered to all dogs. Prednisolone was used alone in 9 of 28 (32%) dogs; the remaining 19 dogs received a combination of prednisolone with cytosine arabinoside, cyclosporine and/or azathioprine. Vision was recovered in 24 eyes (50%) of 18 affected dogs. CLINICAL SIGNIFICANCE A positive response to treatment was observed in 64% of dogs with presumptively diagnosed optic neuritis treated with immunosuppressive medication.
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Affiliation(s)
- L Bedos
- Animal Health Trust, Lanwades Park, Kentford, CB8 7UU, UK
| | - R Tetas
- Comparative Ophthalmology Unit, Animal Health Trust, Lanwades Park, Kentford, CB8 7UU, UK
| | - V Crespo
- Neurology and Neurosurgery Unit, Animal Health Trust, Lanwades Park, Kentford, CB8 7UU, UK
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Amuno S, Bedos L, Kodzhahinchev V, Shekh K, Niyogi S, Grahn B. Comparative study of arsenic toxicosis and ocular pathology in wild muskrats (Ondatra zibethicus) and red squirrels (Tamiasciurus hudsonicus) breeding in arsenic contaminated areas of Yellowknife, Northwest Territories (Canada). Chemosphere 2020; 248:126011. [PMID: 32028161 DOI: 10.1016/j.chemosphere.2020.126011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Revised: 01/20/2020] [Accepted: 01/21/2020] [Indexed: 06/10/2023]
Abstract
The Giant Mine is an abandoned gold mine in Yellowknife, Northwest Territories, Canada. Throughout its operation from 1948 to 2004, the Giant Mine released heavy amounts of arsenic trioxide into the environment, thus contaminating the soil and surface water within and around the vicinity of the mine site. Chronic arsenic (As) poisoning negatively impacts wildlife health and can induce multi-organ damages including neurodegeneration and visual dysfunction depending on concentration and duration of exposure. The aim of the current study was to comparatively assess retina layer changes and prevalence of ocular lesions in wild rodent populations (i.e. muskrats and red squirrels) breeding in arsenic endemic areas of Yellowknife, near the vicinity of the abandoned Giant mine site (∼2 km radius), at an intermediate location (approximately 20 km from the mine area) as well as a reference location (spanning 52-105 km from the city of Yellowknife, Canada). Eye globes were removed from euthanized muskrats and squirrels from the three sampling locations with increasing distance from the Giant mine area. Optical Coherence Tomography (OCT) was used to attempt a pan-retinal layer assessment, and histologic examination was utilized for assessment and confirmation of ocular lesions. The retinal layers were measured and statistically compared between the groups based on sampling locations to enhance the scope of histologic evaluations. The preliminary results revealed that thicknesses of ganglion cell layer (GCL), retina nerve fibre layer (NFL), and inner retina layer (IR) were statistically reduced in the muskrats from arsenic endemic area, particularly near the vicinity of the Giant mine compared to the control group. Generalized ocular pathology was histologically confirmed in all the muskrats from the arsenic endemic areas with the manifestation of moderate to severe lymphocytic plasmacytic uveitis (LPU), keratitis and subcapsular cataracts. Inner retinal degeneration was also observed in all the muskrats from the arsenic endemic areas, while muskrats from the control group were predominantly normal. Three muskrats from the control group were noted to have a mild LPU and keratitis. Significant histopathologic changes were not detected in the squirrel eyes from the three groups except for incidental mild cornea scars from all the locations. In general, these preliminary findings confirm the presence of ocular lesions and retina abnormalities in wild muskrats in the Yellowknife area and provide the first evidence of visual dysfunction and impairment in wildlife inhabiting arsenic endemic areas of Canada.
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Affiliation(s)
- S Amuno
- School of Environment and Sustainability, University of Saskatchewan, Saskatoon, Canada.
| | - L Bedos
- Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Canada
| | - V Kodzhahinchev
- Department of Biology, University of Saskatchewan, Saskatoon, Canada
| | - K Shekh
- Department of Biology, University of Saskatchewan, Saskatoon, Canada; Toxicology Centre, University of Saskatchewan, Saskatoon, Canada
| | - S Niyogi
- Department of Biology, University of Saskatchewan, Saskatoon, Canada; Toxicology Centre, University of Saskatchewan, Saskatoon, Canada
| | - B Grahn
- Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Canada
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Bedos L, Dennis R, Aertsens A. What is your diagnosis? Can Vet J 2018; 59:1115-1117. [PMID: 30510320 PMCID: PMC6135308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Affiliation(s)
- Leila Bedos
- Western College of Veterinary Medicine, University of Saskatchewan, 52 Campus Drive, Saskatoon, Saskatchewan S7N 5B4 (Bedos, Aertsens); Animal Health Trust, Lanwades Business Park, Kennett, Newmarket CB8 7UU, UK (Dennis)
| | - Ruth Dennis
- Western College of Veterinary Medicine, University of Saskatchewan, 52 Campus Drive, Saskatoon, Saskatchewan S7N 5B4 (Bedos, Aertsens); Animal Health Trust, Lanwades Business Park, Kennett, Newmarket CB8 7UU, UK (Dennis)
| | - Adrien Aertsens
- Western College of Veterinary Medicine, University of Saskatchewan, 52 Campus Drive, Saskatoon, Saskatchewan S7N 5B4 (Bedos, Aertsens); Animal Health Trust, Lanwades Business Park, Kennett, Newmarket CB8 7UU, UK (Dennis)
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Obeid L, Prunaretty J, Ailleres N, Bedos L, Morel A, Simeon S, Fenoglietto P. EP-1675: Influence of CT contrast agent on head and neck VMAT dose distributions. Radiother Oncol 2017. [DOI: 10.1016/s0167-8140(17)32207-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Obeid L, Molinier J, Aillères N, Bedos L, Morel A, Simeon S, Fenoglietto P. P16. Influence of CT contrast agent on head and neck VMAT dose distributions using Acuros XB® algorithm. Phys Med 2016. [DOI: 10.1016/j.ejmp.2016.11.028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Druet X, Azria D, Sirvent N, Bedos L, Kerr C. Utilisation de la radiothérapie avec modulation d’intensité en pédiatrie : expérience de l’institut du cancer de Montpellier. Cancer Radiother 2016. [DOI: 10.1016/j.canrad.2016.08.072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Molinier J, Aillères N, Bedos L, Morel A, Simeon S, Azria D, Fenoglietto P. EP-1534: Dosimetric impact of the QFix kVue Calypso couch top and the electromagnetic array with photon beams. Radiother Oncol 2016. [DOI: 10.1016/s0167-8140(16)32784-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Combettes E, Molinier J, Ailleres N, Bedos L, Morel A, Simeon S, Azria D, Fenoglietto P. EP-1576: Evaluation of transit in vivo dosimetry using portal imaging in VMAT treatment plans. Radiother Oncol 2016. [DOI: 10.1016/s0167-8140(16)32826-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Morel A, Molinier J, Bedos L, Aillères N, Azria D, Fenoglietto P. EP-1829: Evaluation of metal artifact reduction (MAR) algorithm for patients with a bilateral hip implant. Radiother Oncol 2016. [DOI: 10.1016/s0167-8140(16)33080-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Pirault N, Boisselier P, Bedos L, Molinier J, Morel A, Siméon S, Aillères N, Azria D, Fenoglietto P. Influence of medical contrast agent (Iomeron) on head and neck VMAT dose distributions. Phys Med 2015. [DOI: 10.1016/j.ejmp.2015.10.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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Encaoua J, Riou O, Riet F, Wong S, Aillères N, Bedos L, Fenoglietto P, Siméon S, Azria D, Boisselier P. Dose délivrée, facteur primordial du contrôle local en radiothérapie stéréotaxique pulmonaire : expérience de 152 traitements. Cancer Radiother 2015. [DOI: 10.1016/j.canrad.2015.07.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Riou O, Santoro L, Bedos L, Llacer Moscardo C, Fenoglietto P, Kotzki P, Eberle M, Guillemard S, Azria D, Deshayes E. Faisabilité et utilité clinique de la TEP-scanographie quadridimensionnelle pour la planification de radiothérapie stéréotaxique hépatique. Cancer Radiother 2015. [DOI: 10.1016/j.canrad.2015.07.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Pirault N, Boisselier P, Bedos L, Molinier J, Morel A, Siméon S, Aillères N, Azria D, Fenoglietto P. Influence de l’injection d’un produit de contraste (Ioméron) sur la dosimétrie de la sphère ORL. Cancer Radiother 2015. [DOI: 10.1016/j.canrad.2015.07.148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Molinier J, Bedos L, Aillères N, Azria D, Fenoglietto P. Évaluation de l’algorithme de réduction des artéfacts métalliques sur des patients avec prothèses de hanche bilatérales. Cancer Radiother 2015. [DOI: 10.1016/j.canrad.2015.07.143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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20
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Riou O, Bedos L, Fenoglietto P, Molinier J, Aillères N, Azria D, Llacer-Moscardo C. Radiothérapie stéréotaxique hépatique asservie à la respiration guidée par l’image pendant les fractions. Cancer Radiother 2015. [DOI: 10.1016/j.canrad.2015.07.056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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21
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Riou O, Llacer Moscardo C, Fenoglietto P, Bedos L, Molinier J, Hortelano Pardo E, Aillères N, Azria D. EP-1285: Clinical results of image-guided liver SBRT using VMAT and real-time adaptive tumor gating. Radiother Oncol 2015. [DOI: 10.1016/s0167-8140(15)41277-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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22
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Ailleres N, Bedos L, Molinier J, Azria D, Fenoglietto P. EP-1520: Metal Artifact Reduction algorithm to enhance organ outlines for patients with hip prostheses in radiation therapy. Radiother Oncol 2015. [DOI: 10.1016/s0167-8140(15)41512-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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23
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Fenoglietto P, Bedos L, Dubois P, Fenoglietto A, Dubois J, Aillères N, David A. Prothèses dentaires et algorithme de réduction des artéfacts métalliques pour les patients ORL. Cancer Radiother 2014. [DOI: 10.1016/j.canrad.2014.07.071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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24
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Bourgier C, Lemanski C, Ducteil A, Molinier J, Morel A, Thézenas S, Bedos L, Aillères N, Azria D, Fenoglietto P. Dosimétrie du cancer du sein bilatéral : première expérience avec l’arcthérapie volumétrique modulée (VMAT). Cancer Radiother 2014. [DOI: 10.1016/j.canrad.2014.07.090] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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25
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Bedos L, Aillères N, Azria D, Fenoglietto P. CT Number Accuracy Assessment of a New Metal Artifact Reduction Algorithm for CT Simulations in Radiation Therapy. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.2473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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26
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Draghici R, Bourgier C, Lemanski C, Ducteil A, Charissoux M, Molinier J, Thezenas S, Bedos L, Ailleres N, Fenoglietto P, Azria D. Volumetric Modulated Arc Therapy for Bilateral Breast Carcinoma: Dosimetric Analysis and Immediate Tolerance. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.2469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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27
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Bourgier C, Lemanski C, Ducteil A, Charissoux M, Jessica M, Morel A, Thezenas L, Bedos L, Ailleres N, Azria D, Fenoglietto P. Bilateral Cancer Breast Irradiation by Volumetric Modulated Arc Therapy (VMAT): Early Clinical Experience. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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28
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Bourgier C, Lemanski C, Bedos L, Riou O, Molinier J, Llacer-Moscardo C, Aillères N, Azria D, Fenoglietto P. PO-0836: Coronary arteries preservation through VMAT use in adjuvant left breast cancer irradiation. Radiother Oncol 2014. [DOI: 10.1016/s0167-8140(15)30954-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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29
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Bedos L, Riou O, Molinier J, Braccini A, Llacer-Moscardo C, Aillères N, Azria D, Fenoglietto P. EP-1651: Evaluation of consistency tumor repositioning during multiple breathing cycles for liver stereotactic treatment. Radiother Oncol 2014. [DOI: 10.1016/s0167-8140(15)31769-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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30
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Molinier J, Bedos L, Aillères N, Azria D, Fenoglietto P. OC-0401: Validation of Gated RapidArc treatments delivery using the Electronic Portal Imaging Device. Radiother Oncol 2014. [DOI: 10.1016/s0167-8140(15)30506-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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31
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Fenoglietto P, Bedos L, Aillères N, Molinier J. Évaluation de la qualité des arcthérapies volumétriques modulées (VMAT) synchronisées à la respiration par imageur portal. Cancer Radiother 2013. [DOI: 10.1016/j.canrad.2013.07.096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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32
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Fenoglietto P, Bedos L, Riou O, Molinier J, Braccini A, Llacer Moscardo C, Aillères N, Azria D. Utilisation de l’imagerie de basse énergie (kV) pendant les fractions pour l’évaluation de la qualité d’une arcthérapie volumétrique modulée stéréotaxique du foie avec asservissement à la respiration. Cancer Radiother 2013. [DOI: 10.1016/j.canrad.2013.07.099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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33
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Fenoglietto P, Hammoud Y, Llacer Moscardo C, Riou O, Bedos L, Azria D. Arcthérapie volumétrique modulée stéréotaxique asservie à la respiration et suivi pendant les fractions : résultats préliminaires. Cancer Radiother 2013. [DOI: 10.1016/j.canrad.2013.07.100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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34
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Aillères N, Boisselier P, Fenoglietto P, Riou O, Bedos L, Charissoux M, Azria D. Radiothérapie stéréotaxique pulmonaire avec Rapidarc et imagerie pendant les fractions pour le suivi tumoral sans marqueur implanté. Cancer Radiother 2013. [DOI: 10.1016/j.canrad.2013.07.058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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35
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Ailleres N, Boisselier P, Siméon S, Bedos L, Molinier J, Pastant A, Riou O, Fénoglietto P, Azria D. Lung stereotaxy in rapidarc with intra fraction imaging without internal marker. Phys Med 2013. [DOI: 10.1016/j.ejmp.2013.08.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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36
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Bedos L, Riou O, Molinier J, Braccini A, Moscardo CL, Aillères N, Azria D, Fenoglietto P. Gated rapidarc using KV images acquired during dose delivery for liver stereotactic treatment. Phys Med 2013. [DOI: 10.1016/j.ejmp.2013.08.098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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37
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Fenoglietto P, Llacer C, Riou O, Bedos L, Azria D. Online verification of intrafraction motion in VMAT stereotactic prostate treatment. Rep Pract Oncol Radiother 2013. [DOI: 10.1016/j.rpor.2013.03.545] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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38
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Fenoglietto P, Bedos L, Chapet O, Riou O, Molinier J, Aillères N, Azria D. Direct monitoring of the prostate motion by the use of KV imaging per fraction during the irradiation of a VMAT hypofractionated treatment. Phys Med 2013. [DOI: 10.1016/j.ejmp.2013.08.099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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39
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Fenoglietto P, Moscardo CL, Riou O, Bedos L, Moliner J, Dubois J, Azria D. Gated rapidarc for liver stereotactic treatment. Rep Pract Oncol Radiother 2013. [DOI: 10.1016/j.rpor.2013.03.828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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40
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Molinier J, Siméon S, Ailleres N, Bedos L, Aillères N, Fenoglietto P. Quality assurance of rapidarc treatments with FFF. Phys Med 2013. [DOI: 10.1016/j.ejmp.2013.08.119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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41
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Bedos L, Aillères N, Azria D, Fenoglietto P. Validation of the delivered dose for gated rapidarc treatments using the electronic portal imaging device. Phys Med 2013. [DOI: 10.1016/j.ejmp.2013.08.116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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42
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Bedos L, Riou O, Molinier J, Braccini A, Llacer Moscardo C, Aillères N, Azria D, Fenoglietto P. EP-1245: Gated Rapidarc using KV intrafraction verification for liver stereotactic treatment. Radiother Oncol 2013. [DOI: 10.1016/s0167-8140(15)33551-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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43
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Servagi Vernat S, Ali D, Puyraveau M, Lisbona A, Fenoglietto P, Bedos L, Giraud P. PO-0804: A dosimetric comparison of helical tomotherapy and volumetric modulated arc therapy for oropharyngeal cancer. Radiother Oncol 2013. [DOI: 10.1016/s0167-8140(15)33110-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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