Hideaki Hirashima
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Explore the profile of Hideaki Hirashima including associated specialties, affiliations and a list of published articles.
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Articles
46
Citations
187
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Recent Articles
1.
Matsumoto S, Mukumoto N, Ono T, Iramina H, Hirashima H, Adachi T, et al.
Phys Imaging Radiat Oncol
. 2025 Mar;
33:100728.
PMID: 40026906
Background And Purpose: Tumors and fiducial markers do not always exhibit synchronous motion across different respiratory phases, in a phenomenon called the target localization error (TLE). We determined the margin...
2.
Hirashima H, Zhou D, Mukumoto N, Inokuchi H, Hamaura N, Yamagishi M, et al.
Med Phys
. 2025 Feb;
PMID: 39904621
Background: Although deep learning (DL) methods for reconstructing 3D magnetic resonance (MR) volumes from 2D MR images yield promising results, they require large amounts of training data to perform effectively....
3.
Kawata K, Hirashima H, Nakata M, Fujimoto T, Aizawa R, Mizowaki T
Phys Med
. 2025 Jan;
129():104886.
PMID: 39752803
Background And Purpose: Free-breathing computed tomography (FBCT) used in treatment planning for lower thoracic (Th8-Th12) spine stereotactic body radiotherapy (SBRT) can cause deviations between planned and irradiated doses due to...
4.
Kashiwagi T, Sakanaka K, Inoo H, Hirashima H, Fujii K, Mizowaki T
Int Cancer Conf J
. 2024 Jul;
13(3):223-229.
PMID: 38962035
Patients after renal transplantation are susceptible to secondary malignancies, including anal squamous cell carcinoma. Chemoradiotherapy is the standard treatment for anal squamous cell carcinoma; however, typical irradiation fields for anal...
5.
Ono T, Adachi T, Hirashima H, Iramina H, Kishi N, Matsuo Y, et al.
Phys Eng Sci Med
. 2024 Jun;
47(4):1337-1348.
PMID: 38900228
This study aimed to identify systematic errors in measurement-, calculation-, and prediction-based patient-specific quality assurance (PSQA) methods for volumetric modulated arc therapy (VMAT) on lung cancer and to standardize the...
6.
Ono T, Iramina H, Hirashima H, Adachi T, Nakamura M, Mizowaki T
J Radiat Res
. 2024 May;
65(4):421-432.
PMID: 38798135
Machine- and patient-specific quality assurance (QA) is essential to ensure the safety and accuracy of radiotherapy. QA methods have become complex, especially in high-precision radiotherapy such as intensity-modulated radiation therapy...
7.
Kishi N, Yoneyama M, Inoo H, Inoue M, Iramina H, Nakakura A, et al.
Radiat Oncol
. 2024 Mar;
19(1):32.
PMID: 38459580
Background: Centrally located lung tumours present a challenge because of their tendency to exhibit symptoms such as airway obstruction, atelectasis, and bleeding. Surgical resection of these tumours often requires sacrificing...
8.
Ono T, Hirashima H, Adachi T, Iramina H, Fujimoto T, Uto M, et al.
J Appl Clin Med Phys
. 2024 Feb;
25(7):e14307.
PMID: 38363044
Background: For patient-specific quality assurance (PSQA) for small targets, the dose resolution can change depending on the characteristics of the dose calculation algorithms. Purpose: This study aimed to evaluate the...
9.
Yokota K, Kawano O, Sakai H, Morishita Y, Masuda M, Hayashi T, et al.
Spine Surg Relat Res
. 2023 Dec;
7(6):496-503.
PMID: 38084224
Introduction: Intraoperative three-dimensional (3D) imaging guide technology, such as the O-arm surgical imaging system, is a beneficial tool in spinal surgery that provides real-time 3D images of a patient's spine....
10.
Dosimetric verification of four dose calculation algorithms for spine stereotactic body radiotherapy
Hirashima H, Nakamura M, Nakamura K, Matsuo Y, Mizowaki T
J Radiat Res
. 2023 Nov;
65(1):109-118.
PMID: 37996097
The applications of Type B [anisotropic analytical algorithm (AAA) and collapsed cone (CC)] and Type C [Acuros XB (AXB) and photon Monte Carlo (PMC)] dose calculation algorithms in spine stereotactic...