نتایج جستجو برای: operative gamma camera

تعداد نتایج: 269893  

Journal: :iranian journal of nuclear medicine 0
afshin akbarzadeh research center for molecular and cellular imaging, tehran university of medical sciences, tehran, iran valiallah saba radiation research center, faculty of paramedicine, aja university of medical sciences, tehran, iran mohammad reza ay department of medical physics and biomedical engineering, tehran university of medical sciences, tehran, iran

introduction:surgeosight is a dedicated intra-operative hand-held gamma camera designed and manufactured by our team to be used for lymphoscintigraphy. although conventional gamma cameras are widely used, they lack the capability of the sentinel lymph node (sln) imaging in the operation room. like conventional gamma cameras it is necessary to calibrate surgeosight for linearity distortion, ener...

Journal: :World Journal of Surgical Oncology 2007
Carole Mathelin Samuel Salvador Sabrina Croce Norosoa Andriamisandratsoa Daniel Huss Jean-Louis Guyonnet

BACKGROUND Sentinel lymph node (SLN) procedure is now a widely accepted method of LN staging in selected invasive breast cancers (unifocal, size </= 2 cm, clinically N0, without previous treatment). Complete axillary clearance is no longer needed if the SLN is negative. However, the oncological safety of this procedure remains to be addressed in randomized clinical trials. One main pitfall is t...

Journal: :iranian journal of nuclear medicine 2004
nasrollah jabbari hossein rajabi hassan firoozabadi fereidoon rastgoo nahid yaghoobi

introduction: scatter radiation is one of the major sources of error in nuclear medicine data processing. different methods of scatter correction have been introduced in order to improve the quality of data. however the best method is to avoid recording of scatter photons in acquisition. the only difference between scattered and non-scattered photons is the energy. pulse height analyzer is the ...

2007
S. Salvador V. Bekaert C. Mathelin D. Huss

Large field of view gamma cameras are widely used to perform lymphoscintigraphy in the sentinel lymph nodes (SLN) procedure in case of breast cancer. However, they are not specified for this application and their sizes do not enable their use in the operative room to control the excision of the all SLN. We present the results obtained with a prototype of a new mini gamma camera developed especi...

Introduction:SURGEOSIGHT is a dedicated intra-operative hand-held gamma camera designed and manufactured by our team to be used for lymphoscintigraphy. Although conventional gamma cameras are widely used, they lack the capability of the sentinel lymph node (SLN) imaging in the operation room. Like conventional gamma cameras it is necessary to calibrate SURGEOSIGHT for linearity...

Journal: :world journal of plastic surgery 0
denis codazzi department of plastic surgery, university of turin, san giovanni battista hospital, turin, italy; maria alessandra bocchiotti department of plastic surgery, university of turin, san giovanni battista hospital, turin, italy; bernardo righi department of plastic surgery, riuniti hospi-tal, bergamo, italy enrico robotti department of plastic surgery, riuniti hospi-tal, bergamo, italy

standardization of photography in plastic surgery is fundamental for pre-operative surgical planning, comparative post-operative assessment, and demonstration of surgical results.1 in rhinoplasty, slight changes in patient or camera position can lessen nasal hump, vary nose size, and alter skin tension.2 in order to prevent these common errors, photographic standardization with high-quality equ...

Ahmad Bitarafan Rajabi Bijan Hashemi Malayeri Fereidoon Rastgoo Hassan Firoozabadi Hossein Rajabi, Nahid Yaghoobi Nasrollah Jabbari

Introduction: Scatter radiation is one of the major sources of error in nuclear medicine data processing. Different methods of scatter correction have been introduced in order to improve the quality of data. However the best method is to avoid recording of scatter photons in acquisition. The only difference between scattered and non-scattered photons is the energy. Pulse height analyzer i...

Bernardo Righi, Denis Codazzi, Enrico Robotti, Maria Alessandra Bocchiotti,

Standardization of photography in plastic surgery is fundamental for pre-operative surgical planning, comparative post-operative assessment, and demonstration of surgical results.1 In rhinoplasty, slight changes in patient or camera position can lessen nasal hump, vary nose size, and alter skin tension.2 In order to prevent these common errors, photographic standardization with high-quality equ...

Novel surgical applications include radioguided procedures in parathyroidectomy operations. In order to investigate the feasibility of usage of the portable gamma camera in parathyroidectomy operations; intraoperative radioguided parathyroidectomy operation was performed in three hyperparathyroidism patients with inconclusive preoperative parathyroid scintigraphy results. Intraoperative portabl...

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