Results 21 to 30 of about 887,327 (301)

Determining and updating PET/CT and SPECT/CT diagnostic reference levels : a systematic review [PDF]

, 2018
The aim of this systematic review is to investigate the national diagnostic reference level (NDRL) methods for positron emission tomography/computed tomography (PET/CT) and single photon emission tomography/computed tomography (SPECT/CT) procedures.
Alkhybari, EM, Brennan, PC, Hogg, P, Kench, PL, McEntee, MF, Willowson, KP   +5 more
core   +1 more source

Multiscale correlative tomography: an investigation of creep cavitation in 316 stainless steel [PDF]

, 2017
Creep cavitation in an ex-service nuclear steam header Type 316 stainless steel sample is investigated through a multiscale tomography workflow spanning eight orders of magnitude, combining X-ray computed tomography (CT), plasma focused ion beam (FIB ...
A Delobbe, A Merkle, AA Wahab, AD Warren, C Gandhi, CL Briant, D Wei, F Tariq, G Haberfehlner, GD West, GJ Lloyd, H Jazaeri, HU Hong, KS Chan, KS Yu, M Lopez-Haro, ME Kassner, P Choquett, PA Midgley, PJ Bouchard, R Jones, R Leary, RF Li, S Kuchibhatla, T.L. Burnett, TF Kelly, TJA Slater, TJA Slater, TL Burnett, TL Burnett, W Guo, Z Jiang   +31 more
core   +2 more sources

Modelling and simulation of magnetic induction in magnetic particle imaging system [PDF]

, 2020
In the last century, tomographic imaging has become an essential tool for disease diagnosis. There are several dominant tomographic imaging methods used for medical application such as computed tomography (CT), magnetic resonance imaging (MRI), positron ...
Birahim, Muhamad Fikri Shahkhirin, Othman, Nurmiza, Sapuan, Syarfa’ Zahirah   +2 more
core  

Convex optimization problem prototyping for image reconstruction in computed tomography with the Chambolle-Pock algorithm [PDF]

, 2012
The primal-dual optimization algorithm developed in Chambolle and Pock (CP), 2011 is applied to various convex optimization problems of interest in computed tomography (CT) image reconstruction. This algorithm allows for rapid prototyping of optimization
Barrett H H, Bian J, Boyd S P, Combettes P L, De Man B, Defrise M, Elad M, Emil Y Sidky, Erdogan H, Green P, Jakob H Jørgensen, Jensen T L, Jørgensen J H, Jørgensen J H Hansen P C Sidky E Y Reiser I S Pan X, Li M, Nocedal J, Pan X, Pock T Chambolle A, Ritschl L, Rockafellar R T, Sidky E Y, Sidky E Y, Xiaochuan Pan, Xu F   +23 more
core   +2 more sources

Evaluation of Local Diagnostic Reference Levels for Paediatric and Adult Patients Undergoing Head Computed Tomography Examination in Amhara Regional States, Ethiopia [PDF]

Iranian Journal of Medical Physics, 2023
Introduction: During computed tomography examinations variation of dose for pediatric and adults has been increasing widely, even when automated exposure control is used. Hence, the objective of this study was to assess the computed tomography head local
Seife Dellie, Ambaye Tesfaw
doaj   +1 more source

Evaluation of some spiral and sequential computed tomography protocols of adults used in three hospitals in Shiraz, Iran with American College of Radiology and European Commission guidelines [PDF]

, 2018
Purpose: Use of computed tomography (CT) has increased considerably all over the world. In addition, there has been an increased demand for utilisation of CT scanning in Iran over the past decade, especially after introducing multi-detector computed ...
Eghlidospoor, Mahdavi, Maziyar, Rahimi, Saeed   +2 more
core   +1 more source

An Unusual Case of Primary Hyperparathyroidism: Case Report of a Bifocal Intrathyroidal Parathyroid Carcinoma

Ear, Nose & Throat Journal, 2023
Intrathyroidal parathyroid carcinoma is an extremely rare cause of primary hyperparathyroidism. We reported a 51-year old woman who presented symptoms of hypercalcemia.
Maxime Damien MD, Alexandra Rodriguez MD, Pierre Kleynen MD, Didier Dequanter MD, PhD, Cyril Bouland MD   +4 more
doaj   +1 more source

Identification of Stage IIIC/IV EGFR-Mutated Non-Small Cell Lung Cancer Populations Sensitive to Targeted Therapy Based on a PET/CT Radiomics Risk Model

Frontiers in Oncology, 2021
ObjectivesThis project aimed to construct an individualized PET/CT prognostic biomarker to accurately quantify the progression risk of patients with stage IIIC-IV epidermal growth factor receptor (EGFR)-mutated Non-small cell lung cancer (NSCLC) after ...
Dan Shao, Dongyang Du, Haiping Liu, Jieqin Lv, You Cheng, Hao Zhang, Wenbing Lv, Shuxia Wang, Lijun Lu   +8 more
doaj   +1 more source

Differences in residual lesion detection after treatment of metastatic prostate cancer based on dual-tracer PET/CT

Frontiers in Oncology
Background18F-fluorodeoxyglucose (18F-FDG) positron-emission tomography/computed tomography (PET/CT) and 68Ga-prostate-specific membrane antigen (68Ga-PSMA) PET/CT are widely used imaging modalities for the diagnosis and management of prostate cancer ...
Tengfei Li, Jianying Ma, Yaning Wang, Fei Li   +3 more
doaj   +1 more source

Computed Dosimeter Dose Index on a 16-Slice Computed Tomography Scanner

Dose-Response, 2022
A computed tomography dose index can be used to quantify the radiation dose received during a CT scan and it is an indicator of the radiation dose to the polymetaylenmetaAcrylate (PMMA) standardized phantom. The objective of this study was 2-fold.
Tadelech S. Mekonin, Tilahun T. Deressu
doaj   +1 more source