نتایج جستجو برای: compact pixelated gamma camera

تعداد نتایج: 267766  

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 ...

2017
Qiu-Sheng Dai Cui-Lan Zhao Hualin Zhang Yujin Qi

The objective of this study is to investigate a high performance and lower cost compact gamma camera module for a multi-head small animal SPECT system. A compact camera module was developed using a thin Lutetium Oxyorthosilicate (LSO) scintillation crystal slice coupled to a Hamamatsu H8500 position sensitive photomultiplier tube (PSPMT). A two-stage charge division readout board based on a nov...

Journal: :Annals of nuclear medicine 2005
Mariko Goto Chio Okuyama Takao Kubota Yo Ushijima Tsunehiko Nishimura

PURPOSE The solid-state gamma camera is now commercially available offering the advantages of a compact and portable system, currently used mainly in the cardiac region. We evaluate the ability of the solid-state gamma camera to depict axillary sentinel lymph nodes (SLNs) in breast cancer patients. MATERIALS AND METHODS Preoperative SLN lymphoscintigraphy (LSG) was performed in 19 patients wi...

Journal: :Scientific Reports 2021

Abstract Dual particle imaging, in which both neutrons and gamma-rays the environment can be individually characterized, is particularly attractive for monitoring mixed radiation emitters such as special nuclear materials (SNM). Effective SNM localization detection benefits from high instrument sensitivity so that real-time imaging or with a limited number of acquired events enabled. For portab...

2014
G. De Lorenzo M. Chmeissani

The Voxel Imaging PET (VIP) Pathfinder project intends to show the advantages of using pixelated solid-state technology for nuclear medicine applications. It proposes designs for Positron Emission Tomography (PET), Positron Emission Mammography (PEM) and Compton gamma camera detectors with a large number of signal channels (of the order of 106). For Compton camera, especially with a large numbe...

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...

2007
George Eliopoulos Milos Island Costas Stefanis Christer Halldin

While the Anger gamma camera was dominant for several decades for nuclear medicine imaging, there are a number of significant developments in progress. The large increase of the usage of PET scanners has been a result of new detector materials such as LSO, GSO, YAP etc, improved electronics and algorithms such as list mode reconstruction and in particular the combination with CT. Finally althou...

Journal: :Journal of nuclear medicine : official publication, Society of Nuclear Medicine 2009
Sanjiv S Gambhir Daniel S Berman Jack Ziffer Michael Nagler Martin Sandler Jim Patton Brian Hutton Tali Sharir Shlomo Ben Haim Simona Ben Haim

UNLABELLED This study described and validated a new solid-state single-photon gamma-camera and compared it with a conventional-SPECT Anger camera. The compact new camera uses a unique method for localizing gamma-photon information with a bank of 9 solid-state detector columns with tungsten collimators that rotate independently. METHODS Several phantom studies were performed comparing the new ...

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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