Zobrazeno 1 - 10
of 40
pro vyhledávání: '"Johannes Ulén"'
Autor:
Thomas Ying, Pablo Borrelli, Lars Edenbrandt, Olof Enqvist, Reza Kaboteh, Elin Trägårdh, Johannes Ulén, Henrik Kjölhede
Publikováno v:
Osteoporosis and Sarcopenia, Vol 10, Iss 2, Pp 78-83 (2024)
Objectives: Evaluation of sarcopenia from computed tomography (CT) is often based on measuring skeletal muscle area on a single transverse slice. Automatic segmentation of muscle volume has a lower variance and may be a better proxy for the total mus
Externí odkaz:
https://doaj.org/article/06985694957c49ff97679d86289249af
Autor:
Eirini Polymeri, MD, Åse A. Johnsson, PhD, Olof Enqvist, PhD, Johannes Ulén, PhD, Niclas Pettersson, PhD, Fredrik Nordström, PhD, Jon Kindblom, PhD, Elin Trägårdh, PhD, Lars Edenbrandt, PhD, Henrik Kjölhede, PhD
Publikováno v:
Advances in Radiation Oncology, Vol 9, Iss 3, Pp 101383- (2024)
Purpose: Meticulous manual delineations of the prostate and the surrounding organs at risk are necessary for prostate cancer radiation therapy to avoid side effects to the latter. This process is time consuming and hampered by inter- and intraobserve
Externí odkaz:
https://doaj.org/article/f37bf060332042dc9c41457978839fb6
Autor:
Pablo Borrelli, José Luis Loaiza Góngora, Reza Kaboteh, Johannes Ulén, Olof Enqvist, Elin Trägårdh, Lars Edenbrandt
Publikováno v:
EJNMMI Physics, Vol 9, Iss 1, Pp 1-10 (2022)
Abstract Background Metabolic positron emission tomography/computed tomography (PET/CT) parameters describing tumour activity contain valuable prognostic information, but to perform the measurements manually leads to both intra- and inter-reader vari
Externí odkaz:
https://doaj.org/article/85e7e6910e9344808ea2fb998d551f99
Autor:
David Molnar, Olof Enqvist, Johannes Ulén, Måns Larsson, John Brandberg, Åse A. Johnsson, Elias Björnson, Göran Bergström, Ola Hjelmgren
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-13 (2021)
Abstract To develop a fully automatic model capable of reliably quantifying epicardial adipose tissue (EAT) volumes and attenuation in large scale population studies to investigate their relation to markers of cardiometabolic risk. Non-contrast cardi
Externí odkaz:
https://doaj.org/article/38fe4a3e3bd642fca495bdaff7ad75c5
Autor:
Thomas Ying, Pablo Borrelli, Lars Edenbrandt, Olof Enqvist, Reza Kaboteh, Elin Trägårdh, Johannes Ulén, Henrik Kjölhede
Publikováno v:
European Radiology Experimental, Vol 5, Iss 1, Pp 1-8 (2021)
Abstract Background Radical cystectomy for urinary bladder cancer is a procedure associated with a high risk of complications, and poor overall survival (OS) due to both patient and tumour factors. Sarcopenia is one such patient factor. We have devel
Externí odkaz:
https://doaj.org/article/c37e02c68eaa4cd190b164d8fc8d67c0
Publikováno v:
EJNMMI Research, Vol 11, Iss 1, Pp 1-11 (2021)
Abstract Background Since three-dimensional segmentation of cardiac region in 123I-metaiodobenzylguanidine (MIBG) study has not been established, this study aimed to achieve organ segmentation using a convolutional neural network (CNN) with 123I-MIBG
Externí odkaz:
https://doaj.org/article/60d89d746ae64a1d8d1e8c04f9993f21
Autor:
May Sadik, Jesús López-Urdaneta, Johannes Ulén, Olof Enqvist, Armin Krupic, Rajender Kumar, Per-Ola Andersson, Elin Trägårdh
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
Abstract To develop an artificial intelligence (AI)-based method for the detection of focal skeleton/bone marrow uptake (BMU) in patients with Hodgkin’s lymphoma (HL) undergoing staging with FDG-PET/CT. The results of the AI in a separate test grou
Externí odkaz:
https://doaj.org/article/68300fb6b52045efada7176b61b3489c
Autor:
Pablo Borrelli, Reza Kaboteh, Olof Enqvist, Johannes Ulén, Elin Trägårdh, Henrik Kjölhede, Lars Edenbrandt
Publikováno v:
European Radiology Experimental, Vol 5, Iss 1, Pp 1-6 (2021)
Abstract Background Body composition is associated with survival outcome in oncological patients, but it is not routinely calculated. Manual segmentation of subcutaneous adipose tissue (SAT) and muscle is time-consuming and therefore limited to a sin
Externí odkaz:
https://doaj.org/article/faa873e77bdc48538108f70535f720ca
Autor:
Pablo Borrelli, John Ly, Reza Kaboteh, Johannes Ulén, Olof Enqvist, Elin Trägårdh, Lars Edenbrandt
Publikováno v:
EJNMMI Physics, Vol 8, Iss 1, Pp 1-11 (2021)
Abstract Background [18F]-fluorodeoxyglucose (FDG) positron emission tomography with computed tomography (PET-CT) is a well-established modality in the work-up of patients with suspected or confirmed diagnosis of lung cancer. Recent research efforts
Externí odkaz:
https://doaj.org/article/755726e3d64348b1bd9790b6a632e19c
Autor:
Hanna Sartor, David Minarik, Olof Enqvist, Johannes Ulén, Anders Wittrup, Maria Bjurberg, Elin Trägårdh
Publikováno v:
Clinical and Translational Radiation Oncology, Vol 25, Iss , Pp 37-45 (2020)
Background: It is time-consuming for oncologists to delineate volumes for radiotherapy treatment in computer tomography (CT) images. Automatic delineation based on image processing exists, but with varied accuracy and moderate time savings. Using con
Externí odkaz:
https://doaj.org/article/025c081f2c874041abc66a1ac8a9b6f0