Zobrazeno 1 - 10
of 1 366
pro vyhledávání: '"P. Hietanen"'
Autor:
Hietanen, Vertti
We prove that the Hardy-Littlewood maximal operator is bounded in the weighted generalized Orlicz space if the weight satisfies the classical Muckenhoupt condition $A_p$ and $t \to \frac{\varphi(x,t)}{t^p}$ is almost increasing in addition to the sta
Externí odkaz:
http://arxiv.org/abs/2409.18525
Publikováno v:
Proc. SPIE 12925, Medical Imaging 2024: Physics of Medical Imaging
Cone-beam computed tomography (CBCT) has become a vital imaging technique in various medical fields but scatter artifacts are a major limitation in CBCT scanning. This challenge is exacerbated by the use of large flat panel 2D detectors. The scatter-
Externí odkaz:
http://arxiv.org/abs/2402.17397
Autor:
Järnstedt, Jorma, Sahlsten, Jaakko, Jaskari, Joel, Kaski, Kimmo, Mehtonen, Helena, Hietanen, Ari, Sundqvist, Osku, Varjonen, Vesa, Mattila, Vesa, Prapayasotok, Sangsom, Nalampang, Sakarat
Preoperative radiological identification of mandibular canals is essential for maxillofacial surgery. This study demonstrates the reproducibility of a deep learning system (DLS) by evaluating its localisation performance on 165 heterogeneous cone bea
Externí odkaz:
http://arxiv.org/abs/2305.14385
Autor:
Mari Lahelma, Heini Rauhamaa, Riikka-Leena Leskelä, Outi Isomeri, Juhana Idänpään-Heikkilä, Sari Käkelä, Nichola Roebuck, Barbara Mascialino, Sakari Hietanen, Mikko Loukovaara, Annika Auranen
Publikováno v:
Acta Oncologica, Vol 63, Iss 1 (2024)
Background: Despite recent treatment advances in ovarian cancer (OC), more real-world evidence studies investigating patient outcomes are needed. OCRWE-Finland was an observational cohort study investigating OC outcomes in Finland during the pre-PARP
Externí odkaz:
https://doaj.org/article/28fe666c08f9476b8c185588bfaf5da0
Autor:
Mari Lahelma, Heini Rauhamaa, Outi Isomeri, Juhana Idänpään-Heikkilä, Sari Käkelä, Nichola Roebuck, Barbara Mascialino, Sakari Hietanen, Mikko Loukovaara, Annika Auranen
Publikováno v:
Acta Oncologica, Vol 63, Iss 1 (2024)
Background: As the treatment landscape for advanced ovarian cancer (OC) evolves, it is important to understand patient outcomes in real-world clinical practice. OCRWE-Finland was an observational cohort study investigating OC outcomes, including trea
Externí odkaz:
https://doaj.org/article/ead2c7d6078c40b384938eca60b4f9dc
Publikováno v:
in IEEE Access, vol. 11, pp.00371-100382, 2023
Metal artifact correction is a challenging problem in cone beam computed tomography (CBCT) scanning. Metal implants inserted into the anatomy cause severe artifacts in reconstructed images. Widely used inpainting-based metal artifact reduction (MAR)
Externí odkaz:
http://arxiv.org/abs/2208.08288
Autor:
Järnstedt, Jorma, Sahlsten, Jaakko, Jaskari, Joel, Kaski, Kimmo, Mehtonen, Helena, Lin, Ziyuan, Hietanen, Ari, Sundqvist, Osku, Varjonen, Vesa, Mattila, Vesa, Prapayasotok, Sangsom, Nalampang, Sakarat
Deep learning approach has been demonstrated to automatically segment the bilateral mandibular canals from CBCT scans, yet systematic studies of its clinical and technical validation are scarce. To validate the mandibular canal localization accuracy
Externí odkaz:
http://arxiv.org/abs/2205.13874
Autor:
Sanaz Jamalzadeh, Jun Dai, Kari Lavikka, Yilin Li, Jing Jiang, Kaisa Huhtinen, Anni Virtanen, Jaana Oikkonen, Sakari Hietanen, Johanna Hynninen, Anna Vähärautio, Antti Häkkinen, Sampsa Hautaniemi
Publikováno v:
BMC Cancer, Vol 24, Iss 1, Pp 1-14 (2024)
Abstract Copy-number alterations (CNAs) are a hallmark of cancer and can regulate cancer cell states via altered gene expression values. Herein, we have developed a copy-number impact (CNI) analysis method that quantifies the degree to which a gene e
Externí odkaz:
https://doaj.org/article/49e9e8d08ec34660ad3ed7346f570610
Publikováno v:
Acta Veterinaria Scandinavica, Vol 66, Iss 1, Pp 1-6 (2024)
Abstract Background Diet and endogenous vitamin D synthesis are possible sources of vitamin D in wild rabbits. Higher 25-hydroxyvitamin D (25(OH)D) concentrations have been reported in rabbits after artificial UVB light exposure than in rabbits witho
Externí odkaz:
https://doaj.org/article/088a1520de7043dd9acd97f9662db528
Publikováno v:
Wind Energy Science, Vol 9, Pp 417-438 (2024)
Over the past few years, the offshore wind sector has been subject to renewed yet growing interest from the industry and from the research sphere, with a particular focus on a recently developed concept, the floating offshore wind (FOW). Because of i
Externí odkaz:
https://doaj.org/article/c8aaa127f01f4e8399341c728f4dcd32