FullText URL fulltext.pdf
Author Ihara, Hiroki| Yoshio, Kotaro| Tanabe, Shunsuke| Sugiyama, Soichi| Hashimoto, Masashi| Maeda, Naoaki| Akagi, Shinsuke| Takao, Soshi| Noma, Kazuhiro| Hiraki, Takao|
Keywords Radiation therapy Esophageal squamous cell carcinoma Recurrence 18F-fluorodeoxyglucose positron emission tomography Survival
Note The version of record of this article, first published in Esophagus, is available online at Publisher’s website: http://dx.doi.org/10.1007/s10388-023-01000-4|
Published Date 2023-04-07
Publication Title Esophagus
Volume volume20
Issue issue3
Publisher Springer Science and Business Media LLC
Start Page 548
End Page 556
ISSN 1612-9059
NCID AA11885266
Content Type Journal Article
language English
OAI-PMH Set 岡山大学
Copyright Holders © The Author(s) 2023
File Version publisher
PubMed ID 37027045
DOI 10.1007/s10388-023-01000-4
Web of Science KeyUT 000964113700001
Related Url isVersionOf https://doi.org/10.1007/s10388-023-01000-4
FullText URL fulltext.pdf
Author Kajita, Soichiro| Iguchi, Toshihiro| Matsui, Yusuke| Tomita, Koji| Uka, Mayu| Umakoshi, Noriyuki| Kawabata, Takahiro| Munetomo, Kazuaki| Hiraki, Takao|
Keywords Biopsy Imaging Complication Renal neoplasms
Note The version of record of this article, first published in Japanese Journal of Radiology, is available online at Publisher’s website: http://dx.doi.org/10.1007/s11604-023-01509-9|
Published Date 2023-11-22
Publication Title Japanese Journal of Radiology
Volume volume42
Issue issue4
Publisher Springer Science and Business Media LLC
Start Page 398
End Page 405
ISSN 1867-1071
NCID AA12375935
Content Type Journal Article
language English
OAI-PMH Set 岡山大学
Copyright Holders © The Author(s) 2023
File Version publisher
PubMed ID 37991654
DOI 10.1007/s11604-023-01509-9
Web of Science KeyUT 001106454600001
Related Url isVersionOf https://doi.org/10.1007/s11604-023-01509-9
FullText URL fulltext.pdf
Author Iguchi, Toshihiro| Matsui, Yusuke| Toji, Tomohiro| Sakurai, Jun| Tomita, Koji| Uka, Mayu| Umakoshi, Noriyuki| Kawabata, Takahiro| Munetomo, Kazuaki| Mitsuhashi, Toshiharu| Hiraki, Takao|
Keywords Biopsy Kidney Tumor Computed tomography Ultrasound
Note The version of record of this article, first published in Japanese Journal of Radiology, is available online at Publisher’s website: http://dx.doi.org/10.1007/s11604-023-01496-x|
Published Date 2023-10-14
Publication Title Japanese Journal of Radiology
Volume volume42
Issue issue3
Publisher Springer Science and Business Media LLC
Start Page 319
End Page 325
ISSN 1867-1071
NCID AA12375935
Content Type Journal Article
language English
OAI-PMH Set 岡山大学
Copyright Holders © The Author(s) 2023
File Version publisher
PubMed ID 37833443
DOI 10.1007/s11604-023-01496-x
Web of Science KeyUT 001086535200001
Related Url isVersionOf https://doi.org/10.1007/s11604-023-01496-x
JaLCDOI 10.18926/AMO/66916
FullText URL 78_2_135.pdf
Author Higaki, Fumiyo| Morimitsu, Yusuke| Iguchi, Toshihiro| Saito, Hayato| Takaki, Haruhiko| Nakagoshi, Ayako| Wada, Maki| Uka, Mayu| Akagi, Noriaki| Mitsuhashi, Toshiharu| Matsui, Yusuke| Hiraki, Takao|
Abstract This study aimed to evaluate the potential reduction in contrast medium utilization using photon-counting detector computed tomography (PCD-CT). One PCD-CT scan (CT1) and three conventional (non-PCD-CT) CT scans (CT2-CT4) were performed using a multi-energy CT phantom that contained eight rods with different iodine concentrations (0.2, 0.5, 1, 2, 5, 10, 15, and 20 mg/ml). The CT values of the seven groups (CT1 for 40, 50, 60, and 70 keV; and CT2-4) were measured. Noise and contrast-to-noise ratio (CNR) were assessed for the eight rods at various iodine concentrations. CT2 and CT1 (40 keV) respectively required 20 mg/ml and 5 mg/ml of iodine, indicating that a comparable contrast effect could be obtained with approximately one-fourth of the contrast medium amount. The standard deviation values increased at lower energy levels irrespective of the iodine concentration. The CNR exhibited a decreasing trend with lower iodine concentrations, while it remained relatively stable across all iodine levels (40-70 keV). This study demonstrated that virtual monochromatic 40 keV images offer a similar contrast effect with a reduced contrast medium amount when compared to conventional CT systems at 120 kV.
Keywords photon-counting detector CT energy integrating detector CT computed tomography contrast medium amount reduction
Amo Type Original Article
Publication Title Acta Medica Okayama
Published Date 2024-04
Volume volume78
Issue issue2
Publisher Okayama University Medical School
Start Page 135
End Page 142
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language English
Copyright Holders Copyright Ⓒ 2024 by Okayama University Medical School
File Version publisher
Refereed True
PubMed ID 38688831
Web of Science KeyUT 001229151800005
FullText URL fulltext.pdf
Author Takahashi, Yuka| Higaki, Fumiyo| Sugaya, Akiko| Asano, Yudai| Kojima, Katsuhide| Morimitsu, Yusuke| Akagi, Noriaki| Itoh, Toshihide| Matsui, Yusuke| Hiraki, Takao|
Keywords Photon-counting detector computed tomography Energy-integrating detectors Ear ossicles High-resolution imaging 3D
Note The version of record of this article, first published in Japanese Journal of Radiology, is available online at Publisher’s website: http://dx.doi.org/10.1007/s11604-023-01485-0|
Published Date 2023-08-27
Publication Title Japanese Journal of Radiology
Volume volume42
Issue issue2
Publisher Springer Science and Business Media LLC
Start Page 158
End Page 164
ISSN 1867-1071
NCID AA12375935
Content Type Journal Article
language English
OAI-PMH Set 岡山大学
Copyright Holders © The Author(s) 2023
File Version publisher
PubMed ID 37633874
DOI 10.1007/s11604-023-01485-0
Web of Science KeyUT 001060337800001
Related Url isVersionOf https://doi.org/10.1007/s11604-023-01485-0
JaLCDOI 10.18926/AMO/66668
FullText URL 78_1_029.pdf
Author Kitayama, Takahiro| Tanaka, Takashi| Kanie, Yuichiro| Marukawa, Yohei| Kojima, Katsuhide| Tanaka, Takehiro| Takao, Soshi| Hiraki, Takao|
Abstract This retrospective study investigated whether necrotic lesions detected on a computed tomography (CT) scan are more regressive than non-necrotic lesions after methotrexate withdrawal in patients pathologically diagnosed with methotrexate-associated lymphoproliferative disorders (MTX-LPD). In total, 89 lesions extracted from 24 patients on CT scans were included in the analysis. All patients had been evaluated for the presence of necrosis within lesions via CT scan upon first suspicion of MTX-LPD (baseline CT scan). The percentage lesion size reduction between the baseline and initial follow-up CT scan was calculated. The association between necrosis within lesions and size changes was estimated via linear regression analyses using both crude and adjusted models. Necrosis was significantly more common in extranodal lesions (27 out of 30 lesions, 90%) than in nodal lesions (9 out of 59 lesions, 15%, p<0.001). In the crude model, the regression of necrotic lesions was 58.5% greater than that of non-necrotic lesions; the difference was statistically significant (p<0.001). Additionally, the longest diameter of necrotic lesions at the baseline CT scan was significantly greater than that of non-necrotic lesions (p<0.001). Based on the adjusted model, necrotic lesions showed 49.3% greater regression than non-necrotic lesions (p=0.017). Necrosis detected on a CT scan was found to be an independent predictor of regression after MTX withdrawal in patients with MTX-LPD.
Keywords methotrexate lymphoproliferative disorder computed tomography necrosis
Amo Type Original Article
Publication Title Acta Medica Okayama
Published Date 2024-02
Volume volume78
Issue issue1
Publisher Okayama University Medical School
Start Page 29
End Page 36
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language English
Copyright Holders Copyright Ⓒ 2024 by Okayama University Medical School
File Version publisher
Refereed True
PubMed ID 38419312
Web of Science KeyUT 001203658200001
JaLCDOI 10.18926/AMO/66160
FullText URL 77_6_665.pdf
Author Sakurai, Atsunobu| Uka, Mayu| Iguchi, Toshihiro| Tomita, Koji| Matsui, Yusuke| Kakiuchi, Yoshihiko| Kuroda, Shinji| Fujiwara, Toshiyoshi| Hiraki, Takao|
Abstract We report the case details of a 65-year-old Japanese man with an omental abscess that was discovered 43 days after he underwent a laparoscopic proximal gastrectomy for gastric cancer. His chief complaint was mild abdominal pain that had persisted for several days. The abscess was diagnosed as a rare postoperative complication. We hesitated to perform a reoperation given the invasiveness of general anesthesia and surgery, plus the possibility of postoperative adhesions and because the patient’s general condition was stable and he had only mild abdominal pain. Percutaneous drainage using a 10.2-F catheter was performed with the patient under conscious sedation and computed tomography–fluoroscopy guidance, with no complications. After the procedure, the size of the abscess cavity was remarkably reduced, and 23 days later the catheter was withdrawn.
Keywords drainage omental abscess omental infarction proximal gastrectomy
Amo Type Case Report
Publication Title Acta Medica Okayama
Published Date 2023-12
Volume volume77
Issue issue6
Publisher Okayama University Medical School
Start Page 665
End Page 669
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language English
Copyright Holders Copyright Ⓒ 2023 by Okayama University Medical School
File Version publisher
Refereed True
PubMed ID 38145942
Web of Science KeyUT 001164631200013
JaLCDOI 10.18926/AMO/66157
FullText URL 77_6_647.pdf
Author Kojima, Katsuhide| Takahashi, Yuka| Sugiyama, Soichi| Asano, Yudai| Okawa, Nanako| Makimoto, Satoko| Higaki, Fumiyo| Iguchi, Toshihiro| Hiraki, Takao|
Abstract A 67-year-old man was referred to our hospital for the diagnosis and treatment of prostate cancer. Multidisciplinary discussion led to intensity-modulated radiotherapy preceded by hormone therapy. Before radiotherapy, a biodegradable hydrogel spacer (HS) was placed between the prostate and rectum to reduce radiation injury risk. Three weeks postplacement, pelvic magnetic resonance imaging revealed HS migration into the pelvic vein. Subsequent whole-body contrast-enhanced computed tomography (CECT) revealed HS migration into the pulmonary artery. The patient showed no symptoms or clinical signs. Radiotherapy was completed uneventfully. Complete absorption of the migrated HS was confirmed using CECT images 5 months postplacement.
Keywords hydrogel spacer prostate cancer radiotherapy pulmonary embolism
Amo Type Case Report
Publication Title Acta Medica Okayama
Published Date 2023-12
Volume volume77
Issue issue6
Publisher Okayama University Medical School
Start Page 647
End Page 650
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language English
Copyright Holders Copyright Ⓒ 2023 by Okayama University Medical School
File Version publisher
Refereed True
PubMed ID 38145939
Web of Science KeyUT 001164631200010
FullText URL fulltext.pdf
Author Uka, Mayu| Iguchi, Toshihiro| Okawa, Nanako| Matsui, Yusuke| Tomita, Koji| Umakoshi, Noriyuki| Munetomo, Kazuaki| Gobara, Hideo| Araki, Motoo| Hiraki, Takao|
Keywords Kidney neoplasms Cryosurgery Image-guided
Note The version of record of this article, first published in Japanese Journal of Radiology, is available online at Publisher’s website: http://dx.doi.org/10.1007/s11604-022-01297-8|
Published Date 2022-06-21
Publication Title Japanese Journal of Radiology
Volume volume40
Issue issue11
Publisher Springer Science and Business Media LLC
Start Page 1201
End Page 1209
ISSN 1867-1071
NCID AA12375935
Content Type Journal Article
language English
OAI-PMH Set 岡山大学
Copyright Holders © The Author(s) 2022
File Version publisher
PubMed ID 35727459
DOI 10.1007/s11604-022-01297-8
Web of Science KeyUT 000814035800002
Related Url isVersionOf https://doi.org/10.1007/s11604-022-01297-8
FullText URL fulltext.pdf
Author Tomita, Koji| Matsui, Yusuke| Uka, Mayu| Umakoshi, Noriyuki| Kawabata, Takahiro| Munetomo, Kazuaki| Nagata, Shoma| Iguchi, Toshihiro| Hiraki, Takao|
Keywords Ablation Liver Metastasis
Note The version of record of this article, first published in Japanese Journal of Radiology, is available online at Publisher’s website: http://dx.doi.org/10.1007/s11604-022-01335-5|
Published Date 2022-09-13
Publication Title Japanese Journal of Radiology
Volume volume40
Issue issue10
Publisher Springer Science and Business Media LLC
Start Page 1035
End Page 1045
ISSN 1867-1071
Content Type Journal Article
language English
OAI-PMH Set 岡山大学
Copyright Holders © The Author(s) 2022
File Version publisher
PubMed ID 36097234
DOI 10.1007/s11604-022-01335-5
Web of Science KeyUT 000852956100003
Related Url isVersionOf https://doi.org/10.1007/s11604-022-01335-5
FullText URL fulltext.pdf
Author Matsui, Yusuke| Tomita, Koji| Uka, Mayu| Umakoshi, Noriyuki| Kawabata, Takahiro| Munetomo, Kazuaki| Nagata, Shoma| Iguchi, Toshihiro| Hiraki, Takao|
Keywords Ablation Lung Pulmonary Metastasis
Note The version of record of this article, first published in Japanese Journal of Radiology, is available online at Publisher’s website: http://dx.doi.org/10.1007/s11604-022-01302-0|
Published Date 2022-07-02
Publication Title Japanese Journal of Radiology
Volume volume40
Issue issue10
Publisher Springer Science and Business Media LLC
Start Page 1024
End Page 1034
ISSN 1867-1071
NCID AA12375935
Content Type Journal Article
language English
OAI-PMH Set 岡山大学
Copyright Holders © The Author(s) 2022
File Version publisher
PubMed ID 35778630
DOI 10.1007/s11604-022-01302-0
Web of Science KeyUT 000819687400001
Related Url isVersionOf https://doi.org/10.1007/s11604-022-01302-0
FullText URL fulltext.pdf
Author Umakoshi, Noriyuki| Matsui, Yusuke| Tomita, Koji| Uka, Mayu| Kawabata, Takahiro| Iguchi, Toshihiro| Hiraki, Takao|
Keywords hepatocellular carcinoma extrahepatic metastases ablation therapy radiofrequency ablation microwave ablation cryoablation percutaneous ethanol injection
Published Date 2023-07-18
Publication Title Cancers
Volume volume15
Issue issue14
Publisher MDPI
Start Page 3665
ISSN 2072-6694
Content Type Journal Article
language English
OAI-PMH Set 岡山大学
Copyright Holders © 2023 by the authors.
File Version publisher
PubMed ID 37509326
DOI 10.3390/cancers15143665
Web of Science KeyUT 001035192500001
Related Url isVersionOf https://doi.org/10.3390/cancers15143665
Title Alternative Non-vascular interventional radiology for lung cancer
Author Hiraki, Takao|
Keywords 肺癌(lung cancer) インターベンショナルラジオロジー(interventional radiology) 非血管系(non-vascular)
Publication Title Journal of Okayama Medical Association
Published Date 2022-12-01
Volume volume134
Issue issue3
Start Page 145
End Page 151
ISSN 0030-1558
Related Url isVersionOf https://doi.org/10.4044/joma.134.145
language Japanese
Copyright Holders Copyright (c) 2022 岡山医学会
File Version publisher
DOI 10.4044/joma.134.145
FullText URL fulltext20230418-06.pdf
Author Umakoshi, Noriyuki| Iguchi, Toshihiro| Matsui, Yusuke| Tomita, Koji| Uka, Mayu| Kawabata, Takahiro| Munetomo, Kazuaki| Nagata, Shoma| Gobara, Hideo| Araki, Motoo| Hiraki, Takao|
Keywords Renal cryoablation Transcatheter arterial embolization Chronic kidney disease
Note The version of record of this article, first published in Japanese Journal of Radiology, is available online at Publisher’s website: http://dx.doi.org/10.1007/s11604-023-01416-z|
Published Date 2023-04-01
Publication Title Japanese Journal of Radiology
Publisher Springer Science and Business Media LLC
ISSN 1867-1071
Content Type Journal Article
language English
OAI-PMH Set 岡山大学
Copyright Holders © The Author(s) 2023
File Version publisher
PubMed ID 37002430
DOI 10.1007/s11604-023-01416-z
Web of Science KeyUT 000961195900001
Related Url isVersionOf https://doi.org/10.1007/s11604-023-01416-z
JaLCDOI 10.18926/AMO/64366
FullText URL 77_1_81.pdf
Author Tomita, Koji| Iguchi, Toshihiro| Matsui, Yusuke| Uka, Mayu| Nakata, Eiji| Hiraki, Takao|
Abstract Osteoid osteoma (OO) is a benign bone tumor that presents with nocturnal pain. Computed tomography (CT)- guided radiofrequency ablation (RFA) has been widely performed for OO, and major adverse events post-RFA are rare. We report a case of OO in the left navicular bone of a 15-year-old male. He underwent RFA for OO, and the pain improved temporarily. At the 1-month follow-up, the patient complained of left foot pain, and a CT examination revealed a fracture of the ablated navicular bone. Fractures are rare but must be taken into account after bone RFA.
Keywords osteoid osteoma radiofrequency ablation navicular bone fracture
Amo Type Case Report
Publication Title Acta Medica Okayama
Published Date 2023-02
Volume volume77
Issue issue1
Publisher Okayama University Medical School
Start Page 81
End Page 84
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language English
Copyright Holders Copyright Ⓒ 2023 by Okayama University Medical School
File Version publisher
Refereed True
PubMed ID 36849150
Web of Science KeyUT 000952973200002
FullText URL fulltext.pdf
Author Yoshio, Kotaro| Ihara, Hiroki| Okamoto, Kazuhiro| Suzuki, Etsuji| Ogata, Takeshi| Sugiyama, Soichi| Nakamura, Keiichiro| Nagao, Shoji| Masuyama, Hisashi| Hiraki, Takao|
Keywords cervical cancer tumor size squamous cell carcinoma image-guided brachytherapy (IGBT) central shielding (CS)
Published Date 2022-07-05
Publication Title Journal Of Radiation Research
Publisher Oxford University Press on behalf of The Japanese Radiation Research Society and Japanese Society for Radiation Oncology
ISSN 0449-3060
Content Type Journal Article
language English
OAI-PMH Set 岡山大学
Copyright Holders © The Author(s) 2022.
File Version publisher
PubMed ID 35791439
DOI 10.1093/jrr/rrac040
Web of Science KeyUT 000820941900001
Related Url isVersionOf https://doi.org/10.1093/jrr/rrac040
FullText URL fulltext.pdf
Author Iwamuro, Masaya| Kawai, Yusuke| Uka, Mayu| Matsui, Yusuke| Hiraki, Takao| Kawahara, Yoshiro| Okada, Hiroyuki|
Published Date 2022-04-07
Publication Title Case Reports In Gastrointestinal Medicine
Volume volume2022
Publisher Hindawi Ltd.
Start Page 9988216
ISSN 2090-6528
Content Type Journal Article
language English
OAI-PMH Set 岡山大学
Copyright Holders © 2022 Masaya Iwamuro et al.
File Version publisher
PubMed ID 35433061
DOI 10.1155/2022/9988216
Web of Science KeyUT 000791234100001
Related Url isVersionOf https://doi.org/10.1155/2022/9988216
FullText URL fulltext.pdf
Author Higaki, Fumiyo| Inoue, Satoshi| Oda, Wakako| Matsusue, Eiji| Hiraki, Takao|
Keywords pial blood supply peritumoral brain edema arachnoid plane peritumoral flow void magnetic resonance imaging
Published Date 2022-04-08
Publication Title Acta Radiologica Open
Volume volume11
Issue issue4
Publisher Sage Publications Ltd.
ISSN 2058-4601
Content Type Journal Article
language English
OAI-PMH Set 岡山大学
Copyright Holders © The Author(s) 2022
File Version publisher
PubMed ID 35425642
DOI 10.1177/20584601221091208
Web of Science KeyUT 000780184200001
Related Url isVersionOf https://doi.org/10.1177/20584601221091208
FullText URL fulltext.pdf
Author Inai, Ryota| Nakahara, Ryuichi| Morimitsu, Yusuke| Akagi, Noriaki| Marukawa, Youhei| Matsushita, Toshi| Tanaka, Takashi| Tada, Akihiro| Hiraki, Takao| Nasu, Yoshihisa| Nishida, Keiichiro| Ozaki, Toshifumi| Kanazawa, Susumu|
Keywords Osteoporosis Bone density Tomography (x-ray computed) X-ray microtomography
Published Date 2021-01-28
Publication Title European Radiology Experimental
Volume volume4
Issue issue1
Publisher Springer nature
Start Page 4
ISSN 2509-9280
Content Type Journal Article
language English
OAI-PMH Set 岡山大学
Copyright Holders © The Author(s). 2020
File Version publisher
PubMed ID 31993864
DOI 10.1186/s41747-019-0135-0
Web of Science KeyUT 000705622700001
Related Url isVersionOf https://doi.org/10.1186/s41747-019-0135-0
FullText URL fulltext.pdf
Author Katsui, Kuniaki| Ogata, Takeshi| Sugiyama, Soichi| Yoshio, Kotaro| Kuroda, Masahiro| Hiraki, Takao| Kiura, Katsuyuki| Maeda, Yoshinobu| Toyooka, Shinichi| Kanazawa, Susumu|
Published Date 2021-06-04
Publication Title scientific reports
Volume volume11
Issue issue1
Publisher Nature Research
Start Page 11882
ISSN 2045-2322
Content Type Journal Article
language English
OAI-PMH Set 岡山大学
Copyright Holders © The Author(s) 2021
File Version publisher
PubMed ID 34088965
DOI 10.1038/s41598-021-91449-z
Web of Science KeyUT 000678611200010
Related Url isVersionOf https://doi.org/10.1038/s41598-021-91449-z