The Experts below are selected from a list of 20133 Experts worldwide ranked by ideXlab platform
Daniel A Tonetti - One of the best experts on this subject based on the ideXlab platform.
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The Utility of Whole Body Imaging in the Evaluation of Solitary Brain Tumors.
World neurosurgery, 2019Co-Authors: Michael D White, Nitin Agarwal, Daniel A TonettiAbstract:Solitary brain tumors can propose a diagnostic dilemma owing to the difficulty in differentiating between primary brain tumors and metastatic disease. The similar radiologic appearance on routine magnetic resonance Imaging will necessitate the need for additional noninvasive testing. We sought to determine the clinical utility of preoperative Whole Body screening with computed tomography (CT) to detect metastatic disease in patients with solitary brain tumors. A prospectively maintained surgical database for a large quaternary care academic institution was retrospectively reviewed for all patients undergoing craniotomy for a new diagnosis of enhancing solitary brain lesion from January 2011 to January 2016. Patients were excluded if the Imaging findings had demonstrated multiple brain tumors, they had a known diagnosis of malignancy, or they had undergone previous craniotomy. The demographic and radiographic information and clinical and histopathologic data were collected and tallied. A total of 218 patients with solitary brain tumors met the inclusion criteria and were included in the present study. Histopathologic analysis confirmed primary central nervous system tumors in 152 patients (74.4%) and metastatic disease in 66 (25.6%). Preoperative screening with Whole Body CT had a sensitivity of 0.92 and specificity of 0.95 for detecting systemic metastases in the patients. Preoperative Whole Body CT correctly identified systemic malignancy in 88% of the patients ultimately diagnosed with metastasis (positive predictive value, 88%). Of those with negative Whole Body Imaging findings, 97% had a diagnosis of a primary central nervous system neoplasm (negative predictive value, 97%). Preoperative Whole Body CT had a positive predictive value of 88% and negative predictive value of 97% in the present study and was both sensitive (92%) and specific (95%) for the detection of extracranial tumors. The identification of extracranial tumors on Whole Body CT screening might alter management. Copyright © 2019 Elsevier Inc. All rights reserved.
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The Utility of Whole Body Imaging in the Evaluation of Solitary Brain Tumors.
World Neurosurgery, 2019Co-Authors: Michael D White, Nitin Agarwal, Daniel A TonettiAbstract:Background Solitary brain tumors can propose a diagnostic dilemma owing to the difficulty in differentiating between primary brain tumors and metastatic disease. The similar radiologic appearance on routine magnetic resonance Imaging will necessitate the need for additional noninvasive testing. We sought to determine the clinical utility of preoperative Whole Body screening with computed tomography (CT) to detect metastatic disease in patients with solitary brain tumors. Methods A prospectively maintained surgical database for a large quaternary care academic institution was retrospectively reviewed for all patients undergoing craniotomy for a new diagnosis of enhancing solitary brain lesion from January 2011 to January 2016. Patients were excluded if the Imaging findings had demonstrated multiple brain tumors, they had a known diagnosis of malignancy, or they had undergone previous craniotomy. The demographic and radiographic information and clinical and histopathologic data were collected and tallied. Results A total of 218 patients with solitary brain tumors met the inclusion criteria and were included in the present study. Histopathologic analysis confirmed primary central nervous system tumors in 152 patients (74.4%) and metastatic disease in 66 (25.6%). Preoperative screening with Whole Body CT had a sensitivity of 0.92 and specificity of 0.95 for detecting systemic metastases in the patients. Preoperative Whole Body CT correctly identified systemic malignancy in 88% of the patients ultimately diagnosed with metastasis (positive predictive value, 88%). Of those with negative Whole Body Imaging findings, 97% had a diagnosis of a primary central nervous system neoplasm (negative predictive value, 97%). Conclusions Preoperative Whole Body CT had a positive predictive value of 88% and negative predictive value of 97% in the present study and was both sensitive (92%) and specific (95%) for the detection of extracranial tumors. The identification of extracranial tumors on Whole Body CT screening might alter management.
Minoru Tomizawa - One of the best experts on this subject based on the ideXlab platform.
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Diagnostic accuracy of diffusion-weighted Whole-Body Imaging with background Body signal suppression/T2-weighted image fusion for the detection of abdominal solid cancer.
Experimental and therapeutic medicine, 2017Co-Authors: Minoru Tomizawa, Fuminobu Shinozaki, Kazunori Fugo, Takafumi Sunaoshi, Eriko Sugiyama, Daisuke Kano, Satomi Tanaka, Misaki Shite, Ryouta Haga, Yoshiya FukamizuAbstract:Diffusion-weighted Whole-Body Imaging with background Body signal suppression (DWIBS) images show significant contrast for cancer tissues against non-cancerous tissues. Fusion of a DWIBS and a T2-weighted image (DWIBS/T2) can be used to obtain functional, as well as anatomic, information. In the present study, the performance of DWIBS/T2 in the diagnosis of abdominal solid cancer was evaluated. The records of 14 patients were retrospectively analyzed [5 patients with hepatocellular carcinoma (HCC), 4 with metastatic liver cancer, 3 with pancreatic cancer, 1 with renal cellular carcinoma and 1 with malignant lymphoma of the para-aortic lymph node]. T1WI and T2WI scans did not detect pancreatic cancer in certain cases, whereas DWIs and DWIBS/T2 clearly demonstrated pancreatic cancer in all cases. In addition, metastatic liver cancer and HCC were successfully detected with abdominal US and CECT; however, US did not detect pancreatic cancer in 1 case, while CECT and DWIBS/T2 detected pancreatic cancer in all cases. In conclusion, the diagnostic performance of DWIBS/T2 was the same as that of abdominal US and CECT in detecting primary and metastatic liver cancer. DWIBS/T2 enabled the diagnosis of pancreatic cancer in cases where it was not detected with US, T1WI or T2WI.
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Diffusion-weighted Whole‑Body Imaging with background Body signal suppression/T2 image fusion for the diagnosis of colorectal polyp and cancer
Experimental and therapeutic medicine, 2016Co-Authors: Minoru Tomizawa, Fuminobu Shinozaki, Yoshitaka Uchida, Katsuhiro Uchiyama, Kazunori Fugo, Takafumi Sunaoshi, Aika Ozaki, Eriko Sugiyama, Akira Baba, Daisuke KanoAbstract:Diffusion-weighted Whole-Body Imaging with background Body signal suppression/T2 image fusion (DWIBS/T2) is useful for the diagnosis of cancer as it presents a clear contrast between cancerous and non-cancerous tissue. The present study investigated the limitations and advantages of DWIBS/T2 with regards to the diagnosis of colorectal polyp (CP) or cancer (CRC). The current study included patients diagnosed with CP or CRC following colonoscopy, who were subjected to DWIBS/T2 between July 2012 and March 2015. Patient records were analyzed retrospectively. Patients were subjected to DWIBS/T2 when they presented with abdominal cancers or inflammation. Colonoscopy was performed as part of screening, or if patients had suspected colon cancer or inflammatory bowel disease. A total of 8 male and 7 female patients were enrolled in the present study. All patients, with the exception of one who had been diagnosed with CRC following colonoscopy, had positive results and all patients diagnosed with CP following a colonoscopy, with the exception of one, had negative results on DWIBS/T2. Thus, CRC was detected by DWIBS/T2, while CP was not (P=0.0028). The diameter of CRC lesions was significantly larger than that of CP (P
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Diffusion-weighted Whole-Body Imaging with background Body signal suppression/T2-weighted image fusion of gastrointestinal cancers
Molecular and clinical oncology, 2016Co-Authors: Minoru Tomizawa, Fuminobu Shinozaki, Kazunori Fugo, Takafumi Sunaoshi, Aika Ozaki, Eriko Sugiyama, Daisuke Kano, Satomi Tanaka, Misaki Shite, Ryouta HagaAbstract:Diffusion-weighted Whole-Body Imaging with background Body signal suppression (DWIBS) yields positive results for cancer against the surrounding tissues. The combination of DWIBS and T2-weighted images (DWIBS/T2) in the diagnosis of gastrointestinal tract cancers was retrospectively analyzed in the present study. Patients were subjected to magnetic resonance Imaging after cancer was diagnosed through specimens obtained via biopsy or endoscopic mucosal resection. Sixteen patients were assessed between July, 2012 and June, 2013 and the correlation between detection with DWIBS/T2 and T staging was analyzed. Regarding patients who underwent surgery, the correlation between detection with DWIBS/T2 and the diameter or depth of invasion was analyzed. All cancers that had advanced to >T2 stage were detectable by DWIBS/T2, whereas all cancers staged as T2) or invading beyond the muscularis propria.
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negative signals for adenomyomatosis of the gallbladder upon diffusion weighted Whole Body Imaging with background Body signal suppression t2 weighted image fusion analysis
Experimental and Therapeutic Medicine, 2016Co-Authors: Minoru Tomizawa, Fuminobu Shinozaki, Kazunori Fugo, Takafumi Sunaoshi, Eriko Sugiyama, Yoshiya Fukamizu, Daisuke Kano, Misaki Shite, Ryouta Haga, Satoshi KagayamaAbstract:Differentiation between adenomyomatosis (ADM) and cancer of the gallbladder is necessary during diagnosis. Diffusion-weighted Whole Body Imaging with background Body signal suppression (DWIBS) images are able to indicate cancer and inflammation. The fusion of a DWIBS with a T2 weighted image (DWIBS/T2) facilitates both functional and anatomical investigations. In the present study, patient records and images from patients with surgically confirmed ADM from April 2012 to October 2014 were analyzed retrospectively. The enrolled patients, including 6 men (64.2±13.1 years) and 4 women (57.3±12.4 years) were subjected to DWIBS/T2 during routine clinical practice. The diagnosis of ADM was based on magnetic resonance cholangiopancreatography, transabdominal ultrasonography, and endoscopic ultrasonography; ADM was diagnosed definitively when cystic lesions were observed, indicating the Rokitansky-Aschoff sinus. A single patient was indicated to be positive by DWIBS/T2 Imaging. The Rokitansky-Aschoff sinus revealed a relatively high signal intensity; however, it was not as strong as that of the spleen. The signal intensity was also high on an apparent diffusion coefficient map, suggesting T2 shine-through. The thickened wall displayed low signal intensity. The aforementioned results indicate that ADM may be negative upon DWIBS/T2 Imaging; one false positive case was determined to be ADM, accompanied by chronic cholecystitis. The majority of patients with ADM displayed negative findings upon DWIBS/T2 Imaging, and chronic cholecystitis may cause false positives.
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Diffusion-weighted Whole-Body Imaging with background Body signal suppression/T2 image fusion and positron emission tomography/computed tomography of upper gastrointestinal cancers
Abdominal imaging, 2015Co-Authors: Minoru Tomizawa, Fuminobu Shinozaki, Yoshitaka Uchida, Katsuhiro Uchiyama, Kazunori Fugo, Takafumi Sunaoshi, Aika Ozaki, Eriko Sugiyama, Akira Baba, Yoshiya FukamizuAbstract:Purpose Diffusion-weighted Whole-Body Imaging with background Body signal suppression/T2 image fusion (DWIBS/T2) strongly contrasts cancerous tissue against background healthy tissues. Positron emission tomography/computed tomography (PET/CT) applies the uptake of 18-fluorodeoxyglucose in the diagnosis of cancer. Our aim was to compare DWIBS/T2 and PET/CT in patients with upper gastrointestinal cancers.
Michael D White - One of the best experts on this subject based on the ideXlab platform.
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The Utility of Whole Body Imaging in the Evaluation of Solitary Brain Tumors.
World neurosurgery, 2019Co-Authors: Michael D White, Nitin Agarwal, Daniel A TonettiAbstract:Solitary brain tumors can propose a diagnostic dilemma owing to the difficulty in differentiating between primary brain tumors and metastatic disease. The similar radiologic appearance on routine magnetic resonance Imaging will necessitate the need for additional noninvasive testing. We sought to determine the clinical utility of preoperative Whole Body screening with computed tomography (CT) to detect metastatic disease in patients with solitary brain tumors. A prospectively maintained surgical database for a large quaternary care academic institution was retrospectively reviewed for all patients undergoing craniotomy for a new diagnosis of enhancing solitary brain lesion from January 2011 to January 2016. Patients were excluded if the Imaging findings had demonstrated multiple brain tumors, they had a known diagnosis of malignancy, or they had undergone previous craniotomy. The demographic and radiographic information and clinical and histopathologic data were collected and tallied. A total of 218 patients with solitary brain tumors met the inclusion criteria and were included in the present study. Histopathologic analysis confirmed primary central nervous system tumors in 152 patients (74.4%) and metastatic disease in 66 (25.6%). Preoperative screening with Whole Body CT had a sensitivity of 0.92 and specificity of 0.95 for detecting systemic metastases in the patients. Preoperative Whole Body CT correctly identified systemic malignancy in 88% of the patients ultimately diagnosed with metastasis (positive predictive value, 88%). Of those with negative Whole Body Imaging findings, 97% had a diagnosis of a primary central nervous system neoplasm (negative predictive value, 97%). Preoperative Whole Body CT had a positive predictive value of 88% and negative predictive value of 97% in the present study and was both sensitive (92%) and specific (95%) for the detection of extracranial tumors. The identification of extracranial tumors on Whole Body CT screening might alter management. Copyright © 2019 Elsevier Inc. All rights reserved.
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The Utility of Whole Body Imaging in the Evaluation of Solitary Brain Tumors.
World Neurosurgery, 2019Co-Authors: Michael D White, Nitin Agarwal, Daniel A TonettiAbstract:Background Solitary brain tumors can propose a diagnostic dilemma owing to the difficulty in differentiating between primary brain tumors and metastatic disease. The similar radiologic appearance on routine magnetic resonance Imaging will necessitate the need for additional noninvasive testing. We sought to determine the clinical utility of preoperative Whole Body screening with computed tomography (CT) to detect metastatic disease in patients with solitary brain tumors. Methods A prospectively maintained surgical database for a large quaternary care academic institution was retrospectively reviewed for all patients undergoing craniotomy for a new diagnosis of enhancing solitary brain lesion from January 2011 to January 2016. Patients were excluded if the Imaging findings had demonstrated multiple brain tumors, they had a known diagnosis of malignancy, or they had undergone previous craniotomy. The demographic and radiographic information and clinical and histopathologic data were collected and tallied. Results A total of 218 patients with solitary brain tumors met the inclusion criteria and were included in the present study. Histopathologic analysis confirmed primary central nervous system tumors in 152 patients (74.4%) and metastatic disease in 66 (25.6%). Preoperative screening with Whole Body CT had a sensitivity of 0.92 and specificity of 0.95 for detecting systemic metastases in the patients. Preoperative Whole Body CT correctly identified systemic malignancy in 88% of the patients ultimately diagnosed with metastasis (positive predictive value, 88%). Of those with negative Whole Body Imaging findings, 97% had a diagnosis of a primary central nervous system neoplasm (negative predictive value, 97%). Conclusions Preoperative Whole Body CT had a positive predictive value of 88% and negative predictive value of 97% in the present study and was both sensitive (92%) and specific (95%) for the detection of extracranial tumors. The identification of extracranial tumors on Whole Body CT screening might alter management.
Fuminobu Shinozaki - One of the best experts on this subject based on the ideXlab platform.
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Diagnostic accuracy of diffusion-weighted Whole-Body Imaging with background Body signal suppression/T2-weighted image fusion for the detection of abdominal solid cancer.
Experimental and therapeutic medicine, 2017Co-Authors: Minoru Tomizawa, Fuminobu Shinozaki, Kazunori Fugo, Takafumi Sunaoshi, Eriko Sugiyama, Daisuke Kano, Satomi Tanaka, Misaki Shite, Ryouta Haga, Yoshiya FukamizuAbstract:Diffusion-weighted Whole-Body Imaging with background Body signal suppression (DWIBS) images show significant contrast for cancer tissues against non-cancerous tissues. Fusion of a DWIBS and a T2-weighted image (DWIBS/T2) can be used to obtain functional, as well as anatomic, information. In the present study, the performance of DWIBS/T2 in the diagnosis of abdominal solid cancer was evaluated. The records of 14 patients were retrospectively analyzed [5 patients with hepatocellular carcinoma (HCC), 4 with metastatic liver cancer, 3 with pancreatic cancer, 1 with renal cellular carcinoma and 1 with malignant lymphoma of the para-aortic lymph node]. T1WI and T2WI scans did not detect pancreatic cancer in certain cases, whereas DWIs and DWIBS/T2 clearly demonstrated pancreatic cancer in all cases. In addition, metastatic liver cancer and HCC were successfully detected with abdominal US and CECT; however, US did not detect pancreatic cancer in 1 case, while CECT and DWIBS/T2 detected pancreatic cancer in all cases. In conclusion, the diagnostic performance of DWIBS/T2 was the same as that of abdominal US and CECT in detecting primary and metastatic liver cancer. DWIBS/T2 enabled the diagnosis of pancreatic cancer in cases where it was not detected with US, T1WI or T2WI.
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Diffusion-weighted Whole‑Body Imaging with background Body signal suppression/T2 image fusion for the diagnosis of colorectal polyp and cancer
Experimental and therapeutic medicine, 2016Co-Authors: Minoru Tomizawa, Fuminobu Shinozaki, Yoshitaka Uchida, Katsuhiro Uchiyama, Kazunori Fugo, Takafumi Sunaoshi, Aika Ozaki, Eriko Sugiyama, Akira Baba, Daisuke KanoAbstract:Diffusion-weighted Whole-Body Imaging with background Body signal suppression/T2 image fusion (DWIBS/T2) is useful for the diagnosis of cancer as it presents a clear contrast between cancerous and non-cancerous tissue. The present study investigated the limitations and advantages of DWIBS/T2 with regards to the diagnosis of colorectal polyp (CP) or cancer (CRC). The current study included patients diagnosed with CP or CRC following colonoscopy, who were subjected to DWIBS/T2 between July 2012 and March 2015. Patient records were analyzed retrospectively. Patients were subjected to DWIBS/T2 when they presented with abdominal cancers or inflammation. Colonoscopy was performed as part of screening, or if patients had suspected colon cancer or inflammatory bowel disease. A total of 8 male and 7 female patients were enrolled in the present study. All patients, with the exception of one who had been diagnosed with CRC following colonoscopy, had positive results and all patients diagnosed with CP following a colonoscopy, with the exception of one, had negative results on DWIBS/T2. Thus, CRC was detected by DWIBS/T2, while CP was not (P=0.0028). The diameter of CRC lesions was significantly larger than that of CP (P
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Diffusion-weighted Whole-Body Imaging with background Body signal suppression/T2-weighted image fusion of gastrointestinal cancers
Molecular and clinical oncology, 2016Co-Authors: Minoru Tomizawa, Fuminobu Shinozaki, Kazunori Fugo, Takafumi Sunaoshi, Aika Ozaki, Eriko Sugiyama, Daisuke Kano, Satomi Tanaka, Misaki Shite, Ryouta HagaAbstract:Diffusion-weighted Whole-Body Imaging with background Body signal suppression (DWIBS) yields positive results for cancer against the surrounding tissues. The combination of DWIBS and T2-weighted images (DWIBS/T2) in the diagnosis of gastrointestinal tract cancers was retrospectively analyzed in the present study. Patients were subjected to magnetic resonance Imaging after cancer was diagnosed through specimens obtained via biopsy or endoscopic mucosal resection. Sixteen patients were assessed between July, 2012 and June, 2013 and the correlation between detection with DWIBS/T2 and T staging was analyzed. Regarding patients who underwent surgery, the correlation between detection with DWIBS/T2 and the diameter or depth of invasion was analyzed. All cancers that had advanced to >T2 stage were detectable by DWIBS/T2, whereas all cancers staged as T2) or invading beyond the muscularis propria.
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negative signals for adenomyomatosis of the gallbladder upon diffusion weighted Whole Body Imaging with background Body signal suppression t2 weighted image fusion analysis
Experimental and Therapeutic Medicine, 2016Co-Authors: Minoru Tomizawa, Fuminobu Shinozaki, Kazunori Fugo, Takafumi Sunaoshi, Eriko Sugiyama, Yoshiya Fukamizu, Daisuke Kano, Misaki Shite, Ryouta Haga, Satoshi KagayamaAbstract:Differentiation between adenomyomatosis (ADM) and cancer of the gallbladder is necessary during diagnosis. Diffusion-weighted Whole Body Imaging with background Body signal suppression (DWIBS) images are able to indicate cancer and inflammation. The fusion of a DWIBS with a T2 weighted image (DWIBS/T2) facilitates both functional and anatomical investigations. In the present study, patient records and images from patients with surgically confirmed ADM from April 2012 to October 2014 were analyzed retrospectively. The enrolled patients, including 6 men (64.2±13.1 years) and 4 women (57.3±12.4 years) were subjected to DWIBS/T2 during routine clinical practice. The diagnosis of ADM was based on magnetic resonance cholangiopancreatography, transabdominal ultrasonography, and endoscopic ultrasonography; ADM was diagnosed definitively when cystic lesions were observed, indicating the Rokitansky-Aschoff sinus. A single patient was indicated to be positive by DWIBS/T2 Imaging. The Rokitansky-Aschoff sinus revealed a relatively high signal intensity; however, it was not as strong as that of the spleen. The signal intensity was also high on an apparent diffusion coefficient map, suggesting T2 shine-through. The thickened wall displayed low signal intensity. The aforementioned results indicate that ADM may be negative upon DWIBS/T2 Imaging; one false positive case was determined to be ADM, accompanied by chronic cholecystitis. The majority of patients with ADM displayed negative findings upon DWIBS/T2 Imaging, and chronic cholecystitis may cause false positives.
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Diffusion-weighted Whole-Body Imaging with background Body signal suppression/T2 image fusion and positron emission tomography/computed tomography of upper gastrointestinal cancers
Abdominal imaging, 2015Co-Authors: Minoru Tomizawa, Fuminobu Shinozaki, Yoshitaka Uchida, Katsuhiro Uchiyama, Kazunori Fugo, Takafumi Sunaoshi, Aika Ozaki, Eriko Sugiyama, Akira Baba, Yoshiya FukamizuAbstract:Purpose Diffusion-weighted Whole-Body Imaging with background Body signal suppression/T2 image fusion (DWIBS/T2) strongly contrasts cancerous tissue against background healthy tissues. Positron emission tomography/computed tomography (PET/CT) applies the uptake of 18-fluorodeoxyglucose in the diagnosis of cancer. Our aim was to compare DWIBS/T2 and PET/CT in patients with upper gastrointestinal cancers.
Carey M. Rappaport - One of the best experts on this subject based on the ideXlab platform.
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Millimeter Wave Imaging Architecture for On-The-Move Whole Body Imaging
IEEE Transactions on Antennas and Propagation, 2016Co-Authors: Borja Gonzalez-Valdes, Yolanda Rodriguez-vaqueiro, Antonio Garcia-pino, Fernando Las-heras, Ana Arboleya-arboleya, Yuri Álvarez, Carey M. Rappaport, José Ángel Martínez-LorenzoAbstract:This paper presents a novel interrogation system that 8 combines multiple millimeter wave transmitters and receivers to 9 create real-time high-resolution radar images for personnel secu- 10 rity screening. The main novelty of the presented system is that the 11 images can be created as the person being screened continuously 12 moves across a corridor where the transmitters and receivers, 13 working in a fully coherent architecture, are distributed. As the 14 person moves, the transmitters and receivers are sequentially acti- 15 vated to collect data from different angles to inspect the Whole 16 Body. Multiple images, similar to video frames, are created and 17 examined to look for possible anomalies such as concealed threats. 18 Two-dimensional (2-D) and three-dimensional (3-D) setups have 19 been simulated to show the feasibility of the proposed system. The 20 simulation results in 2-D have been validated using measurements.
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Ray Tracing for Simulation of Millimeter-Wave Whole Body Imaging Systems
IEEE Transactions on Antennas and Propagation, 2015Co-Authors: Kathryn Williams, Borja Gonzalez-Valdes, Luis Tirado, Zhongliang Chen, Jose Angel Martinez, Carey M. RappaportAbstract:A ray tracing algorithm for modeling millimeter waves in a Whole Body Imaging system is presented. Ray tracing is a well-known method for approximating high-frequency wave behavior and is well suited for implementation on graphics processing units (GPUs), presenting computational speed advantages over conventional full-wave modeling techniques. This method leverages the NVIDIA OptiX engine to ensure computational efficiency. Numerical results in this work are compared with conventional two-dimensional method of moments solutions to assess accuracy and computational times are compared with a three-dimensional GPU implementation of the modified equivalent current approximation.
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3d Whole Body Imaging for detecting explosive related threats
IEEE Transactions on Antennas and Propagation, 2012Co-Authors: Yuri Álvarez, Jose Angel Martinez, Borja Gonzalezvaldes, Fernando Lasheras, Carey M. RappaportAbstract:The aim of the millimeter-wave Imaging system presented in this work is to produce accurate geometry reconstruction of the human Body torso and objects concealed under clothing detection. To this effect, two techniques will be combined. First, an inverse source-based fast multipole method which provides a first approach to the true human Body torso profile is considered. Second, the retrieved geometry is refined with the Iterative Field Matrix technique, based on a parameterization of the geometry to be retrieved. Assuming smooth variations of the human Body profile, objects' detection is performed by comparing the retrieved surface with a smoothed one. The results presented in this communication are based on physical optics simulations of the human Body, considering cases with and without objects.
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3D Whole Body Imaging for detecting explosive-related threats
Proceedings of the 2012 IEEE International Symposium on Antennas and Propagation, 2012Co-Authors: Borja Gonzalez-Valdes, José Ángel Martínez-Lorenzo, Yuri Álvarez, Carey M. Rappaport, Fernando Las-herasAbstract:In this work, a Whole-Body Imaging system for concealed objects detection using a mm-wave radar is presented. 3D high resolution images are generated using a two step process. Initially, an inverse source-based Fast Multipole Method (iFMM) provides a first approximation to the true human torso. Afterwards, the retrieved geometry is refined using the Iterative Field Matrix (IFM) technique. Assuming smooth variations of the human Body profile, the object detection is performed by comparing the retrieved surface with a smoothed one. Results are based on Physical Optics simulations of the human Body, considering both cases with and without objects.
