Ultra-low-dose CT reconstructed with the artificial intelligence iterative reconstruction algorithm (AIIR) in 18F-FDG total-body PET/CT examination: a preliminary study
To investigate the feasibility of ultra-low-dose CT (ULDCT) reconstructed with the artificial intelligence iterative reconstruction (AIIR) algorithm in total-body PET/CT imaging. (Source: EJNMMI Physics)
Source: EJNMMI Physics - January 2, 2023 Category: Radiology Authors: Yan Hu, Zhe Zheng, Haojun Yu, Jingyi Wang, Xinlan Yang and Hongcheng Shi Tags: Original Research Source Type: research
Technical opportunities and challenges in developing total-body PET scanners for mice and rats
Positron emission tomography (PET) is the most sensitive in vivo molecular imaging technique available. Small animal PET has been widely used in studying pharmaceutical biodistribution and disease progression ... (Source: EJNMMI Physics)
Source: EJNMMI Physics - January 2, 2023 Category: Radiology Authors: Junwei Du and Terry Jones Tags: Review Source Type: research
Assessment of different regions of interest-based methods for [99mTc]Tc DAT-SPECT quantification using an anthropomorphic striatal phantom
This study assessed the accuracy and precision of DAT-SPECT quantificat... (Source: EJNMMI Physics)
Source: EJNMMI Physics - December 28, 2022 Category: Radiology Authors: Leonardo Alexandre-Santos, Ana Carolina Trevisan, Felipe Arriva Pitella, Vitor Tumas, Jose Henrique Silvah, Mery Kato, Eder Rezende de Moraes and Lauro Wichert-Ana Tags: Original research Source Type: research
Intra- and inter-operator variability in MRI-based manual segmentation of HCC lesions and its impact on dosimetry
The aim was to quantify inter- and intra-observer variability in manually delineated hepatocellular carcinoma (HCC) lesion contours and the resulting impact on radioembolization (RE) dosimetry. (Source: EJNMMI Physics)
Source: EJNMMI Physics - December 21, 2022 Category: Radiology Authors: Elise C. Covert, Kellen Fitzpatrick, Justin Mikell, Ravi K. Kaza, John D. Millet, Daniel Barkmeier, Joseph Gemmete, Jared Christensen, Matthew J. Schipper and Yuni K. Dewaraja Tags: Original research Source Type: research
Analyzing spatial distribution between 18F-fluorodeoxyglucose and 18F-boronophenylalanine positron emission tomography to investigate selection indicators for boron neutron capture therapy
18F-FDG PET is often utilized to determine BNCT selection due to the limited availability of 18F-BPA PET, which is performed by synthesizing 18F into the boron drug used for BNCT, although the uptake mechanisms b... (Source: EJNMMI Physics)
Source: EJNMMI Physics - December 19, 2022 Category: Radiology Authors: Tetsu Nakaichi, Satoshi Nakamura, Kimiteru Ito, Kana Takahashi, Mihiro Takemori, Tairo Kashihara, Kouji Kunito, Naoya Murakami, Kotaro Iijima, Takahito Chiba, Hiroki Nakayama, Shohei Mikasa, Teiji Nishio, Hiroyuki Okamoto, Jun Itami, Hiroaki Kurihara & he Tags: Original research Source Type: research
Evaluation of the performance of a high-resolution time-of-flight PET system dedicated to the head and breast according to NEMA NU 2-2012 standard
This study evaluated the physical performance of a positron emission tomography (PET) system dedicated to the head and breast according to the National Electrical Manufacturers Association (NEMA) NU2-2012 stan... (Source: EJNMMI Physics)
Source: EJNMMI Physics - December 16, 2022 Category: Radiology Authors: Daisuke Morimoto-Ishikawa, Kohei Hanaoka, Shota Watanabe, Takahiro Yamada, Yoshiyuki Yamakawa, Suzuka Minagawa, Shiho Takenouchi, Atsushi Ohtani, Tetsuro Mizuta, Hayato Kaida and Kazunari Ishii Tags: Original Research Source Type: research
Image quality assessment along the one metre axial field-of-view of the total-body Biograph Vision Quadra PET/CT system for 18F-FDG
Recently, total-body PET/CT systems with an extended axial field-of-view (aFOV) became commercially available which allow acquiring physiologic information of multiple organs simultaneously. However, the nomin... (Source: EJNMMI Physics)
Source: EJNMMI Physics - December 14, 2022 Category: Radiology Authors: Ivo Rausch, Julia G. Mannheim, J ürgen Kupferschläger, Christian la Fougère and Fabian P. Schmidt Tags: Original research Source Type: research
Quantification and dosimetry of small volumes including associated uncertainty estimation
Accurate quantification of radioactivity in a source of interest relies on accurate registration between SPECT and anatomical images, and appropriate correction of partial volume effects (PVEs). For small volu... (Source: EJNMMI Physics)
Source: EJNMMI Physics - December 13, 2022 Category: Radiology Authors: Lily Carnegie-Peake, Jan Taprogge, Iain Murray, Glenn D. Flux and Jonathan Gear Tags: Original Research Source Type: research
Detection of prostate cancer bone metastases with fast whole-body 99mTc-HMDP SPECT/CT using a general-purpose CZT system
We evaluated the effects of acquisition time, energy window width, and matrix size on the image quality, quantitation, and diagnostic performance of whole-body 99mTc-HMDP SPECT/CT in the primary metastasis stagin... (Source: EJNMMI Physics)
Source: EJNMMI Physics - December 12, 2022 Category: Radiology Authors: Samuli Arvola, Marko Sepp änen, Kirsi L. Timonen, Pentti Rautio, Otto Ettala, Mikael Anttinen, Peter J. Boström and Tommi Noponen Tags: Original research Source Type: research
Quantitative [99mTc]Tc-MDP SPECT/CT correlated with [18F]NaF PET/CT for bone metastases in patients with prostate cancer
The purpose of the present study was to elucidate the correlation between standardized uptake value (SUV) and volume-based parameters measured by quantitative [99mTc]Tc-methylene diphosphonate (MDP) single photon... (Source: EJNMMI Physics)
Source: EJNMMI Physics - December 5, 2022 Category: Radiology Authors: Kenichi Tanaka, Takashi Norikane, Katsuya Mitamura, Yuka Yamamoto, Yukito Maeda, Kengo Fujimoto, Yasukage Takami, Mariko Ishimura, Hanae Arai-Okuda, Yoichiro Tohi, Nobuyuki Kudomi, Mikio Sugimoto and Yoshihiro Nishiyama Tags: Short communication Source Type: research
A novel intelligent radiomic analysis of perfusion SPECT/CT images to optimize pulmonary embolism diagnosis in COVID-19 patients
COVID-19 infection, especially in cases with pneumonia, is associated with a high rate of pulmonary embolism (PE). In patients with contraindications for CT pulmonary angiography (CTPA) or non-diagnostic CTPA,... (Source: EJNMMI Physics)
Source: EJNMMI Physics - December 5, 2022 Category: Radiology Authors: Sonia Baeza, Debora Gil, Ignasi Garcia-Oliv é, Maite Salcedo-Pujantell, Jordi Deportós, Carles Sanchez, Guillermo Torres, Gloria Moragas and Antoni Rosell Tags: Original research Source Type: research
Preoperative SPECT/CT + intraoperative CT fusion enabling surgical augmented reality to target sentinel lymph node in endometrial cancer
To establish a proof-of-concept study using a phantom model to allow the fusion of preoperative single-photon emission computed tomography (SPECT) combined with computed tomography (CT), also known as SPECT/CT... (Source: EJNMMI Physics)
Source: EJNMMI Physics - November 22, 2022 Category: Radiology Authors: Lise Lecointre, Juan Verde, Fabrice Hubele, Julien Salvadori, Laurent Goffin, Ch érif Akladios and Benoît Gallix Tags: Short communication Source Type: research
Deep progressive learning achieves whole-body low-dose 18F-FDG PET imaging
To validate a total-body PET-guided deep progressive learning reconstruction method (DPR) for low-dose 18F-FDG PET imaging. (Source: EJNMMI Physics)
Source: EJNMMI Physics - November 22, 2022 Category: Radiology Authors: Taisong Wang, Wenli Qiao, Ying Wang, Jingyi Wang, Yang Lv, Yun Dong, Zheng Qian, Yan Xing and Jinhua Zhao Tags: Original research Source Type: research
HYPR4D kernel method on TOF PET data with validations including image-derived input function
Positron emission tomography (PET) images are typically noisy especially in dynamic imaging where the PET data are divided into a number of short temporal frames often with a low number of counts. As a result,... (Source: EJNMMI Physics)
Source: EJNMMI Physics - November 17, 2022 Category: Radiology Authors: Ju-Chieh Kevin Cheng, Connor W. J. Bevington and Vesna Sossi Tags: Original research Source Type: research
A novel rotation method with variable-angle anterior probe for correcting the depth of the kidney to optimize renal dynamic imaging
We aimed to investigate the effect and significance of the rotation method with variable-angle anterior probe corrected for the depth of two kidneys on the determination of glomerular filtration rate (GFR) in ... (Source: EJNMMI Physics)
Source: EJNMMI Physics - November 17, 2022 Category: Radiology Authors: Hua Wei, Ke Han, Jiaojiao Wu, Guang Hu, Zhifang Wu, Hongliang Wang, Xiaoshan Guo, Yansong Hou, Rui Wang and Sijin Li Tags: Original research Source Type: research
