Jose Torres | Polytechnic University of the Philippines (original) (raw)
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Papers by Jose Torres
Summary. We have analysed the influence of higher-order eye aberrations in binocular visual perfo... more Summary. We have analysed the influence of higher-order eye aberrations in binocular visual performance under mesopic conditions, measuring the aberrations in both eyes (with a Wasca aberrometer) of 35 emmetropic observers. Binocular visual performance was checked with two functions: binocular summation for contrast sensitivity function (CSF) and maximum disparity, a parameter that characterizes stereopsis. The results show that binocular summation
World Journal of Urology, 2015
Prostate cancer (PCa) diagnosis relies on clinical suspicion leading to systematic transrectal ul... more Prostate cancer (PCa) diagnosis relies on clinical suspicion leading to systematic transrectal ultrasound-guided biopsy (TRUSGB). Multiparametric magnetic resonance imaging (mpMRI) allows for targeted biopsy of suspicious areas of the prostate instead of random 12-core biopsy. This method has been shown to be more accurate in detecting significant PCa. However, the precise spatial accuracy of cognitive targeting is unknown. Consecutive patients undergoing mpMRI-targeted TRUSGB with cognitive registration (MRTB-COG) followed by robot-assisted radical prostatectomy were included in the present analysis. The regions of interest (ROIs) involved by the index lesion reported on mpMRI were subsequently targeted by two experienced urologists using the cognitive approach. The 27 ROIs were used as spatial reference. Mapping on radical prostatectomy specimen was used as reference to determine true-positive mpMRI findings. Per core correlation analysis was performed. Forty patients were included. Overall, 40 index lesions involving 137 ROIs (mean ROIs per index lesion 3.43) were identified on MRI. After correlating these findings with final pathology, 117 ROIs (85 %) were considered as true-positive lesions. A total of 102 biopsy cores directed toward such true-positive ROIs were available for final analysis. Cognitive targeted biopsy hit the target in 82 % of the cases (84/102). The only identified risk factor for missing the target was an anterior situated ROI (p = 0.01). In experienced hands, cognitive MRTB-COG allows for an accuracy of 82 % in hitting the correct target, given that it is a true-positive lesion. Anterior tumors are less likely to be successfully targeted.
Seminarios de la Fundación Española de Reumatología, 2007
Pathology Case Reviews, 2005
Abstract Penile carcinomas are infrequent in the USA and Europe, but fairly frequent in some geog... more Abstract Penile carcinomas are infrequent in the USA and Europe, but fairly frequent in some geographical regions of Asia, Africa, and Latin America. The vast majority of tumors are squamous cell carcinoma, which disseminate in a loco regional manner to intrapenile ...
IEEE Nuclear Science Symposuim & Medical Imaging Conference, 2010
ABSTRACT The aim of the present work is the characterization of the S8898–128–02 Avalanche PhotoD... more ABSTRACT The aim of the present work is the characterization of the S8898–128–02 Avalanche PhotoDiode array (APDs) from Hamamatsu Photonics. This work includes the implementation of a readout system as well as electronic noise estimation in APDs under several conditions varying integration times and clock frequencies.
Encyclopedia of Special Education, 2008
Oxidative Medicine and Cellular Longevity, 2015
Encyclopedia of Special Education, 2008
Proceedings - 9th IEEE/ACIS International Conference on Computer and Information Science, ICIS 2010, 2010
ABSTRACT This contribution shows how to perform Time of Flight (TOF) measurements in Positron Emi... more ABSTRACT This contribution shows how to perform Time of Flight (TOF) measurements in Positron Emission Tomography (PET) systems using low-cost Field-Programmable Gate Array (FPGA) device with a resolution better than 100 ps. This is achieved with a proper management of the FPGA internal resources and with an extremely careful device calibration process including both temperature and voltage compensation. The results of system calibration and different time measurements between multiple channels are presented.
2011 IEEE International Conference on Robotics and Biomimetics (ROBIO), 2011
Nuclear Instruments & Methods in Physics Research Section a-Accelerators Spectrometers Detectors and Associated Equipment, 2010
Simulation Modelling Practice and Theory, 2009
In the field of engineering, guidelines and computerisation are important to facilitate the resol... more In the field of engineering, guidelines and computerisation are important to facilitate the resolution of complex problems. Engineers apply computer techniques of distributed problem solving (DPS) to design and simulation tasks, such as in industrial manufacture (e.g., simulation of aircraft, modelling of structures and mass customization). An important application of these and other computer-aided techniques is the design and manufacture
Summary. We have analysed the influence of higher-order eye aberrations in binocular visual perfo... more Summary. We have analysed the influence of higher-order eye aberrations in binocular visual performance under mesopic conditions, measuring the aberrations in both eyes (with a Wasca aberrometer) of 35 emmetropic observers. Binocular visual performance was checked with two functions: binocular summation for contrast sensitivity function (CSF) and maximum disparity, a parameter that characterizes stereopsis. The results show that binocular summation
World Journal of Urology, 2015
Prostate cancer (PCa) diagnosis relies on clinical suspicion leading to systematic transrectal ul... more Prostate cancer (PCa) diagnosis relies on clinical suspicion leading to systematic transrectal ultrasound-guided biopsy (TRUSGB). Multiparametric magnetic resonance imaging (mpMRI) allows for targeted biopsy of suspicious areas of the prostate instead of random 12-core biopsy. This method has been shown to be more accurate in detecting significant PCa. However, the precise spatial accuracy of cognitive targeting is unknown. Consecutive patients undergoing mpMRI-targeted TRUSGB with cognitive registration (MRTB-COG) followed by robot-assisted radical prostatectomy were included in the present analysis. The regions of interest (ROIs) involved by the index lesion reported on mpMRI were subsequently targeted by two experienced urologists using the cognitive approach. The 27 ROIs were used as spatial reference. Mapping on radical prostatectomy specimen was used as reference to determine true-positive mpMRI findings. Per core correlation analysis was performed. Forty patients were included. Overall, 40 index lesions involving 137 ROIs (mean ROIs per index lesion 3.43) were identified on MRI. After correlating these findings with final pathology, 117 ROIs (85 %) were considered as true-positive lesions. A total of 102 biopsy cores directed toward such true-positive ROIs were available for final analysis. Cognitive targeted biopsy hit the target in 82 % of the cases (84/102). The only identified risk factor for missing the target was an anterior situated ROI (p = 0.01). In experienced hands, cognitive MRTB-COG allows for an accuracy of 82 % in hitting the correct target, given that it is a true-positive lesion. Anterior tumors are less likely to be successfully targeted.
Seminarios de la Fundación Española de Reumatología, 2007
Pathology Case Reviews, 2005
Abstract Penile carcinomas are infrequent in the USA and Europe, but fairly frequent in some geog... more Abstract Penile carcinomas are infrequent in the USA and Europe, but fairly frequent in some geographical regions of Asia, Africa, and Latin America. The vast majority of tumors are squamous cell carcinoma, which disseminate in a loco regional manner to intrapenile ...
IEEE Nuclear Science Symposuim & Medical Imaging Conference, 2010
ABSTRACT The aim of the present work is the characterization of the S8898–128–02 Avalanche PhotoD... more ABSTRACT The aim of the present work is the characterization of the S8898–128–02 Avalanche PhotoDiode array (APDs) from Hamamatsu Photonics. This work includes the implementation of a readout system as well as electronic noise estimation in APDs under several conditions varying integration times and clock frequencies.
Encyclopedia of Special Education, 2008
Oxidative Medicine and Cellular Longevity, 2015
Encyclopedia of Special Education, 2008
Proceedings - 9th IEEE/ACIS International Conference on Computer and Information Science, ICIS 2010, 2010
ABSTRACT This contribution shows how to perform Time of Flight (TOF) measurements in Positron Emi... more ABSTRACT This contribution shows how to perform Time of Flight (TOF) measurements in Positron Emission Tomography (PET) systems using low-cost Field-Programmable Gate Array (FPGA) device with a resolution better than 100 ps. This is achieved with a proper management of the FPGA internal resources and with an extremely careful device calibration process including both temperature and voltage compensation. The results of system calibration and different time measurements between multiple channels are presented.
2011 IEEE International Conference on Robotics and Biomimetics (ROBIO), 2011
Nuclear Instruments & Methods in Physics Research Section a-Accelerators Spectrometers Detectors and Associated Equipment, 2010
Simulation Modelling Practice and Theory, 2009
In the field of engineering, guidelines and computerisation are important to facilitate the resol... more In the field of engineering, guidelines and computerisation are important to facilitate the resolution of complex problems. Engineers apply computer techniques of distributed problem solving (DPS) to design and simulation tasks, such as in industrial manufacture (e.g., simulation of aircraft, modelling of structures and mass customization). An important application of these and other computer-aided techniques is the design and manufacture