Zobrazeno 1 - 10
of 53
pro vyhledávání: '"W. Siman"'
Publikováno v:
Medical Physics. 47:2441-2449
Purpose The objective was to characterize both systematic and random errors in Positron Emission Tomography (PET)-based 90 Y three-dimensional (3D) dose quantification. Methods A modified NEMA-IEC phantom was used to emulate 90 Y-microsphere PET imag
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c4d738b7253761e81c70fcc96ec66de5
https://doi.org/10.1002/mp.14117
https://doi.org/10.1002/mp.14117
Publikováno v:
Medical Physics. 46:229-237
Purpose 90 Y-microsphere radioembolization or selective internal radiation therapy is increasingly being used as a treatment option for tumors that are not candidates for surgery and external beam radiation therapy. Recently, volumetric 90 Y-dosimetr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::983415fe45e9d2653c7d1568696f2966
https://doi.org/10.1002/mp.13269
https://doi.org/10.1002/mp.13269
Autor:
W Siman, S. Cheenu Kappadath
Publikováno v:
Journal of Nuclear Medicine Technology. 45:290-296
Continuous-bed-motion (CBM) acquisition mode has been made commercially available in PET/CT scanners. CBM mode is designed for whole-body imaging, with a long scan length (multiple axial fields of view [aFOVs]) and short acquisition duration (2–3 m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::95b4e006306a17688c4ffafc9a881f7f
https://doi.org/10.2967/jnmt.117.195438
https://doi.org/10.2967/jnmt.117.195438
Publikováno v:
Medical physicsREFERENCES. 47(6)
The objective was to characterize both systematic and random errors in Positron Emission Tomography (PET)-basedA modified NEMA-IEC phantom was used to emulateWe observed nonlinear errors that depended on theCount-starved
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::e67b220a0b6655f91bd84fc0b1ad35b7
https://pubmed.ncbi.nlm.nih.gov/32135025
https://pubmed.ncbi.nlm.nih.gov/32135025
Publikováno v:
Physics in Medicine and Biology. 62:448-464
The aims of this study were to evaluate the effects of noise, motion blur, and motion compensation using quiescent-period gating (QPG) on the activity concentration (AC) distribution-quantified using the cumulative AC volume histogram (ACVH)-in count
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::884274431c8818f8443408f5f1a011c5
https://doi.org/10.1088/1361-6560/aa5088
https://doi.org/10.1088/1361-6560/aa5088
Publikováno v:
Medical Physics. 43:5093-5103
Purpose: To develop a practical background compensation (BC) technique to improve quantitative 90Y-bremsstrahlung single-photon emission computed tomography (SPECT)/computed tomography (CT) using a commercially available imaging system. Methods: All
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::efce3fedabfb175abecb3957cb0edfaa
https://doi.org/10.1118/1.4960629
https://doi.org/10.1118/1.4960629
Publikováno v:
Medical physics. 43(9)
To develop a practical background compensation (BC) technique to improve quantitative (90)Y-bremsstrahlung single-photon emission computed tomography (SPECT)/computed tomography (CT) using a commercially available imaging system.All images were acqui
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::e855bea85792ac6076db94adff676ed8
https://pubmed.ncbi.nlm.nih.gov/27587040
https://pubmed.ncbi.nlm.nih.gov/27587040
Autor:
Justin Mikell, Veera Baladandayuthapani, S. Cheenu Kappadath, Firas Mourtada, Armeen Mahvash, W Siman
Purpose To quantify differences that exist between dosimetry models used for 90 Y selective internal radiation therapy (SIRT). Methods and Materials Retrospectively, 37 tumors were delineated on 19 post-therapy quantitative 90 Y single photon emissio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::164aa1821fd7ada4866e1383df73a0f5
https://europepmc.org/articles/PMC5085875/
https://europepmc.org/articles/PMC5085875/
Autor:
S. Cheenu Kappadath, W Siman
Publikováno v:
Medical Physics. 39:3435-3444
Purpose: To evaluate and characterize the performance of a new commercially available pixelated portable gamma camera Ergo (Digirad, Poway, CA). Methods: The authors evaluated a pixelated portable gamma camera system, Ergo, that consists of 11 520 el
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::97990ccb67a18db1fcd4c2be52ecde97
https://doi.org/10.1118/1.4718874
https://doi.org/10.1118/1.4718874
Publikováno v:
EJNMMI Physics
Background To assess differences between four different voxel-based dosimetry methods (VBDM) for tumor, liver, and lung absorbed doses following 90Y microsphere selective internal radiation therapy (SIRT) based on 90Y bremsstrahlung SPECT/CT, a secon
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::763ddf4c64772b047afa544362db5d22
https://doi.org/10.1186/s40658-015-0119-y
https://doi.org/10.1186/s40658-015-0119-y