Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Dominic J. Crotty"'
Autor:
Taly Gilat Schmidt, Stacy D. O'Connor, W. Dennis Foley, Franco Rupcich, Naveen M. Kulkarni, Jiahua Fan, Dominic J. Crotty, P. Khobragade
Publikováno v:
Medical Physics. 46:140-151
Purpose Identifying an appropriate tube current setting can be challenging when using iterative reconstruction due to the varying relationship between spatial resolution, contrast, noise, and dose across different algorithms. This study developed and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6e09a688b74fc67bfeae928527d03394
https://doi.org/10.1002/mp.13286
https://doi.org/10.1002/mp.13286
Publikováno v:
Medical Physics. 45:3563-3573
PURPOSE Evaluation of noise texture information in CT images is important for assessing image quality. Noise texture is often quantified by the noise power spectrum (NPS), which requires numerous image realizations to estimate. This study evaluated f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9b42f6c6a6c89a7582ae6c0b93e1b9b8
https://doi.org/10.1002/mp.13040
https://doi.org/10.1002/mp.13040
Publikováno v:
Medical Physics. 42:6572-6578
Purpose: This technical note quantifies the dose and image quality performance of a clinically available organ-dose-based tube current modulation (ODM) technique, using experimental and simulation phantom studies. The investigated ODM implementation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eeec731c9918ec8ed5b20f80512ffac0
https://doi.org/10.1118/1.4933197
https://doi.org/10.1118/1.4933197
Effects of window width and window level adjustment on detection tasks in computed tomography images
Publikováno v:
Medical Imaging 2017: Image Perception, Observer Performance, and Technology Assessment.
This study experimentally evaluated the effect of window width (WW) and window level (WL) on the task based detectability index (d’). Window-level transformation is frequently performed on CT images to improve visualization in clinical arena. Numer
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e4b4ea6acf12d6731d495545ed8e1e57
https://doi.org/10.1117/12.2255575
https://doi.org/10.1117/12.2255575
Publikováno v:
Medical Imaging 2017: Image Perception, Observer Performance, and Technology Assessment.
This study investigated a fractal dimension algorithm for noise texture quantification in CT images. Quantifying noise in CT images is important for assessing image quality. Noise is typically quantified by calculating noise standard deviation and no
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cbb33dbccc1e008be080361325d2816c
https://doi.org/10.1117/12.2255077
https://doi.org/10.1117/12.2255077
Publikováno v:
Medical Imaging: Image Perception, Observer Performance, and Technology Assessment
This study quantitatively evaluated the performance of the exponential transformation of the free-response operating characteristic curve (EFROC) metric, with the Channelized Hotelling Observer (CHO) as a reference. The CHO has been used for image qu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::306f275ce1674445bb6c7f5af999ebed
https://doi.org/10.1117/12.2216505
https://doi.org/10.1117/12.2216505
Autor:
Colin E. Anderson, D'Vone C. Jackson, Greta Toncheva, Dominic J. Crotty, Terry T. Yoshizumi, Martin P. Tornai, Samuel L. Brady
Publikováno v:
Medical Physics. 38:3232-3245
Purpose: A dual modality SPECT-CT prototype system dedicated to uncompressed breast imaging (mammotomography) has been developed. The computed tomography subsystem incorporates an ultrathick K-edge filtration technique producing a quasi-monochromatic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2fe3ffcae92d29ffb8855db44e292ae9
https://doi.org/10.1118/1.3574875
https://doi.org/10.1118/1.3574875
Publikováno v:
Physics in Medicine and Biology. 54:3659-3676
A compact dedicated 3D breast SPECT-CT (mammotomography) system is currently under development. In its initial prototype, the cone-beam CT sub-system is restricted to a fixed-tilt circular rotation around the patient's pendant breast. This study eval
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::67e7e8b0791999eb1401ecd62edab4c2
https://doi.org/10.1088/0031-9155/54/12/004
https://doi.org/10.1088/0031-9155/54/12/004
Publikováno v:
Physics in Medicine and Biology. 52:603-616
A dual modality computed mammotomography (CmT) and single photon emission computed tomography (SPECT) system for dedicated 3D breast imaging is in development. Using heavy K-edge filtration, the CmT component narrows the energy spectrum of the cone-s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7df7abe6b5cffe4ec98161226fdeff6c
https://doi.org/10.1088/0031-9155/52/3/005
https://doi.org/10.1088/0031-9155/52/3/005
Autor:
Dominic J, Crotty, Samuel L, Brady, D'Vone C, Jackson, Greta I, Toncheva, Colin E, Anderson, Terry T, Yoshizumi, Martin P, Tornai
Publikováno v:
Medical physics. 38(6)
A dual modality SPECT-CT prototype system dedicated to uncompressed breast imaging (mammotomography) has been developed. The computed tomography subsystem incorporates an ultrathick K-edge filtration technique producing a quasi-monochromatic x-ray co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::6d7ff31b7207d0f38e60bf7b0118e6ad
https://pubmed.ncbi.nlm.nih.gov/21815398
https://pubmed.ncbi.nlm.nih.gov/21815398