Faculty Profiles - Umakoshi Noriyuki

Papers - Umakoshi Noriyuki

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Early enlarging cavitation after percutaneous radiofrequency ablation of lung tumors: Incidence, risk factors and outcome. International journal

Koji Tomita, Toshihiro Iguchi, Yusuke Matsui, Mayu Uka, Noriyuki Umakoshi, Toshiharu Mitsuhashi, Jun Sakurai, Hideo Gobara, Susumu Kanazawa, Takao Hiraki

Diagnostic and interventional imaging 103 ( 10 ) 464 - 471 2022.5

Language：English Publishing type：Research paper (scientific journal)

PURPOSE: The purpose of this study was to retrospectively determine the incidence of early enlarging cavitation after percutaneous radiofrequency ablation (RFA) of lung tumor and identify risk factors associated with their occurrence. PATIENTS AND METHODS: A total of 245 patients (140 men, 105 women; mean age, 62.7 ± 11.8 [SD] years; age range: 31-87 years) with 605 lung tumors who were treated using 401 RFA sessions from April 2010 to March 2020 were included. Of which, 31 patients with 38 early enlarging cavitation and control group (151 patients with 228 tumors) were analyzed. Early enlarging cavitation was defined as cavities with an enlarged size (>3 cm) occurring on ablated lesions within seven days after RFA. Incidence of cavitation, risk and post-procedural factors of occurrence, major adverse events (AEs) that occurred in RFA sessions with cavitation, and course of cavitation were evaluated. AEs were classified using the CIRSE classification system for complications. RESULTS: Thirty-eight cavities (6.3%, 38/605 tumors) in 31 patients occurred in an average of 3.1 ± 1.7 days (range, 1-7 days) after 32 RFA sessions. Distance from pleura ≥ 20 mm, contact with vessel ≥ 3 mm, multitined expandable electrode ≥ 3 cm, and bronchus ≥ 2 mm encompassed in the ablation zone were independent risk factors of occurrence. Fever ≥ 38.5 °C, white blood cell count ≥ 10,000/μl one day after RFA, and steroid therapy were independent post-procedural factors of occurrence. Twenty-four Grade 3 and two Grade 6 AEs occurred. Twenty-nine cavities disappeared within a mean duration of 111.9 ± 64.9 (SD) days (range: 44-274 days) and four remained with a mean follow-up of 279.2 ± 174 (SD) days; five patients were lost to follow-up. CONCLUSIONS: Early enlarging cavitation occurs in 6.3% of lung tumors treated with RFA and are associated with 26 major AEs in 32 sessions. Aforementioned procedural factors and post-procedural inflammation were significant risk factors of occurrence.

DOI： 10.1016/j.diii.2022.05.004

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Correlation between renal ablation zone in contrast-enhanced CT and non-enhanced MRI during the early period following percutaneous cryoablation.

Noriyuki Umakoshi, Toshihiro Iguchi, Takao Hiraki, Yusuke Matsui, Koji Tomita, Mayu Uka, Soichiro Kajita, Motoo Araki, Toshiharu Mitsuhashi, Hideo Gobara, Susumu Kanazawa

Japanese journal of radiology 40 ( 10 ) 1087 - 1095 2022.5

Language：English Publishing type：Research paper (scientific journal)

PURPOSE: To retrospectively evaluate and correlate the contrast-enhanced computed tomography (CECT) and non-enhanced magnetic resonance imaging (MRI) during the early period following renal cryoablation. MATERIALS AND METHODS: Both dynamic CECT and non-enhanced MRI were performed within 4 days following cryoablation in 34 renal tumors in 33 patients. The renal volumes of the unenhanced regions on dynamic CECT (nephrogenic phase, 4 mm thickness) and the regions with signal intensity changes on non-enhanced MRI (fat-suppressed T2-weighted image, 4 mm thickness) were evaluated. Fusion images of the axial, coronal, and sagittal sections of CECT and MRI images were created from the maximum cross-section of the renal tumor, and the match score of each image was visually evaluated on a 5-point scale. RESULTS: The mean renal volume of the unenhanced regions on CECT and those with signal intensity changes on non-enhanced MRI following cryoablation were 29.5 ± 19.9 cm3 (range, 4.3-97.4 cm3) and 30.7 ± 19.8 cm3 (range, 6.7-94.0 cm3), respectively; the difference between them was -1.17 cm3 (95% confidence interval [CI] -2.74, 0.40, P = 0.139). The Pearson's product-moment correlation coefficient (r = 0.975; 95% CI, 0.951, 0.988; P < 0.0001) showed a strong correlation between the volumes. The average match score between CECT and non-enhanced MRI was as high as 4.5 ± 0.5 points (radiologist 1, 4.3 ± 0.5; radiologist 2, 4.7 ± 0.5). Local tumor control rate was 94.1% (32/34 tumors) and recurrence-free survival rate was 82.0% (95% CI: 64.2%, 91.5%) at 5 years. CONCLUSIONS: The region with signal intensity changes on non-enhanced MRI was strongly correlated with the unenhanced region on CECT during the early period following renal cryoablation.

DOI： 10.1007/s11604-022-01285-y

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In Vivo Microwave Ablation of Normal Swine Lung at High-power, Short-duration Settings.

Toshihiro Iguchi, Takao Hiraki, Yusuke Matsui, Tomohiro Toji, Mayu Uka, Koji Tomita, Toshiyuki Komaki, Noriyuki Umakoshi, Toshiharu Mitsuhashi, Susumu Kanazawa

Acta medica Okayama 76 ( 1 ) 57 - 62 2022.2

Language：English Publishing type：Research paper (scientific journal)

To evaluate the volume and heat-sink effects of microwave ablation (MWA) in the ablation zone of the normal swine lung. MWA at 100 W was performed for 1, 2, and 3 min in 7, 5, and 5 lung zones, respectively. We assessed the histopathology in the ablation zones and other outcome measures: namely, length of the longest long and short axes, sphericity, ellipsoid area, and ellipsoid volume. The mean long- and short-axis diameters were 22.0 and 14.1 mm in the 1-min ablation zone, 27.6 and 20.2 mm in the 2-min ablation zone; and 29.2 and 21.2 mm in the 3-min ablation zone, respectively. All measures, except sphericity, were significantly less with 1-min ablation than with either 2- or 3-min ablation. There were no significant differences between the 2- and 3-min ablation zones, but all measures except sphericity were larger with 3-min ablation. Although there were no blood vessels that resulted in a heat-sink effect within the ablation zones, the presence of bronchi nearby in 5 lung ablation zones resulted in reduced ablation size. In high-power, short-duration MWA, the lung ablation volume was affected by ablation time. Some ablations showed that a heat-sink effect by a neighboring bronchus might occur.

DOI： 10.18926/AMO/63212

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CT fluoroscopy-guided biopsy of pulmonary lesions contacting the interlobar fissure: An analysis of 72 biopsies

Toshihiro Iguchi, Yusuke Matsui, Koji Tomita, Mayu Uka, Noriyuki Umakoshi, Kazuaki Munetomo, Takao Hiraki

Diagnostic and Interventional Imaging 103 ( 6 ) 302 - 309 2022.2

CTガイド下生検で診断された腎capillary hemangiomaの1例

白石明日香, 松井裕輔, 宗友一晃, 平木隆夫, 生口俊浩, 冨田晃司, 宇賀麻由, 馬越紀行, 小牧稔幸, 金澤右

Japanese Journal of Radiology 40 ( Suppl. ) 44 - 44 2022.2

腎腫瘍生検後の出血に対し腎動脈塞栓術を施行した1例

宗友一晃, 生口俊浩, 郷原英夫, 松井裕輔, 冨田晃司, 宇賀麻由, 馬越紀行, 小牧稔幸, 平木隆夫, 金澤右

Japanese Journal of Radiology 40 ( Suppl. ) 44 - 44 2022.2

骨盤内動静脈奇形に対し経静脈的アプローチにて塞栓術を施行した2例

櫻井淳暢, 宇賀麻由, 松井裕輔, 宗友一晃, 生口俊浩, 小牧稔幸, 馬越紀行, 富田晃司, 櫻井淳, 郷原英夫, 平木隆夫

Japanese Journal of Radiology 40 ( Suppl. ) 51 - 51 2022.2

マルチモダリティロードマップを用いて経頸静脈的肝内門脈大循環短期術(TIPS)を行った1例

白石明日香, 冨田晃司, 宗友一晃, 平木隆夫, 生口俊浩, 松井裕輔, 宇賀麻由, 馬越紀行, 小牧稔幸, 金澤右

Japanese Journal of Radiology 40 ( Suppl. ) 50 - 50 2022.2

胆管チューブステントを経皮的に体外抜去した1例

河村俊一, 馬越紀行, 松井裕輔, 宗友一晃, 小牧稔幸, 宇賀麻由, 冨田晃司, 櫻井淳, 生口俊浩, 郷原英夫, 平木隆夫

Japanese Journal of Radiology 40 ( Suppl. ) 50 - 50 2022.2

上大静脈症候群に対するコスモテックステント留置の1例

馬越紀行, 冨田晃司, 平木隆夫, 生口俊浩, 松井裕輔, 宇賀麻由, 小牧稔幸, 宗友一晃, 郷原英夫, 金澤右

Japanese Journal of Radiology 40 ( Suppl. ) 45 - 45 2022.2

Pneumodissection during percutaneous renal cryoablation resulting in massive subcutaneous and mediastinal emphysema

Koji Tomita, Toshihiro Iguchi, Yusuke Matsui, Mayu Uka, Noriyuki Umakoshi, Takao Hiraki

Diagnostic and Interventional Imaging 103 ( 4 ) 231 - 232 2022.1

Massive hemoptysis in a post-operative patient with recurrent lung cancer successfully treated by the combination therapy of Endobronchial Watanabe Spigot and bronchial artery embolization

Masataka Taoka, Go Makimoto, Noriyuki Umakoshi, Kiichiro Ninomiya, Hisao Higo, Yuka Kato, Masanori Fujii, Toshio Kubo, Eiki Ichihara, Kadoaki Ohashi, Katsuyuki Hotta, Masahiro Tabata, Yoshinobu Maeda, Katsuyuki Kiura

Respiratory Medicine Case Reports 38 101669 - 101669 2022

A single-center, single-arm, prospective, open-label trial to evaluate the efficacy and safety of percutaneous sclerotherapy with polidocanol for painful venous malformations (SCIRO-2001): study protocol Reviewed

Mayu Uka, Jun Sakurai, Yusuke Matsui, Toshihiro Iguchi, Koji Tomita, Noriyuki Umakoshi, Kazuaki Munetomo, Toshiharu Mitsuhashi, Hideo Gobara, Takao Hiraki

Nagoya J. Med. Sci. 84. 746–751, 2022 2021.12

Computed Tomography-guided Core Needle Biopsy for Renal Tumors: A Review

Toshihiro Iguchi, Yusuke Matsui, Koji Tomita, Mayu Uka, Toshiyuki Komaki, Soichiro Kajita, Noriyuki Umakoshi, Kazuaki Munetomo, Hideo Gobara, Susumu Kanazawa

Interventional Radiology 6 ( 3 ) 69 - 74 2021.11

Contrast examination of central venous access port implanted through internal jugular vein for evaluation of suspected complications.

Toshihiro Iguchi, Takao Hiraki, Yusuke Matsui, Koji Tomita, Mayu Uka, Noriyuki Umakoshi, Soichiro Kajita, Toshiyuki Komaki, Hideo Gobara, Susumu Kanazawa

Japanese journal of radiology 39 ( 11 ) 1103 - 1110 2021.11

Language：English Publishing type：Research paper (scientific journal)

PURPOSE: We summarized the findings, diagnosis, and outcomes of cases for which contrast examination of central venous access ports (CV-ports) were attempted to detect complications. MATERIALS AND METHODS: Fifty-seven contrast examinations were attempted for 45 patients with 46 CV-ports (median, 162 days after implantation). Contrast examination was performed due to three suspicion catheter fractures or 54 CV-port dysfunctions (combinations of an absence of blood reflux on aspiration and 9 sufficient, 21 insufficient, or 24 impossible drip infusions). RESULTS: Contrast examination was successfully performed in 52 cases and revealed 45 normal findings, 5 pericatheter fibrin sheath formations, and 2 partial catheter fractures. In 23 of 45 cases with normal findings, the resistance to injection was initially mild or moderate but resolved after the CV-port was flushed slowly with heparinized saline solution. Subsequent contrast examination demonstrated normal findings. All fibrin sheath formations disappeared after thrombolytic therapy. Five cases could not undergo contrast examination due to high resistance. After contrast examination, nine of 46 CV-ports were removed or exchanged, while the use of the remaining 37 continued. CONCLUSION: Contrast examination of CV-port allowed the assessment of suspected complications and early treatment.

DOI： 10.1007/s11604-021-01142-4

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胸膜に接する肺結節に対するCT透視ガイド下生検の穿刺経路の比較(CT fluoroscopy-guided biopsy for lung nodules with pleural contact: Comparison with puncture routes)

生口俊浩, 平木隆夫, 松井裕輔, 冨田晃司, 宇賀麻由, 馬越紀行, 梶田聡一郎, 小牧稔幸, 宗友一晃, 郷原英夫, 金澤右

日本インターベンショナルラジオロジー学会雑誌 36 ( Suppl. ) 149 - 149 2021.4

当院におけるT3a腎癌に対する経皮的凍結療法成績の検討(Percutaneous cryoablation outcome for clinical T3a renal cell carcinoma at our institution)

宇賀麻由, 大川七子, 宗友一晃, 馬越紀行, 小牧稔幸, 梶田聡一郎, 冨田晃司, 松井裕輔, 櫻井淳, 生口俊浩, 郷原英夫, 平木隆夫, 金澤右

日本インターベンショナルラジオロジー学会雑誌 36 ( Suppl. ) 182 - 182 2021.4

皮膚直下のタイプII動静脈奇形に対してポリドカノールフォームを用いて硬化療法を施行した一例

松井裕輔, 宇賀麻由, 平木隆夫, 生口俊浩, 冨田晃司, 馬越紀行, 小牧稔幸, 宗友一晃, 金澤右

日本インターベンショナルラジオロジー学会雑誌 36 ( Suppl. ) 242 - 242 2021.4

Diagnostic Value of Model-Based Iterative Reconstruction Combined with a Metal Artifact Reduction Algorithm during CT of the Oral Cavity. Reviewed International journal

Y Kubo, K Ito, M Sone, H Nagasawa, Y Onishi, N Umakoshi, T Hasegawa, T Akimoto, M Kusumoto

AJNR. American journal of neuroradiology 41 ( 11 ) 2132 - 2138 2020.11

Language：English Publishing type：Research paper (scientific journal)

BACKGROUND AND PURPOSE: Metal artifacts reduce the quality of CT images and increase the difficulty of interpretation. This study compared the ability of model-based iterative reconstruction and hybrid iterative reconstruction to improve CT image quality in patients with metallic dental artifacts when both techniques were combined with a metal artifact reduction algorithm. MATERIALS AND METHODS: This retrospective clinical study included 40 patients (men, 31; women, 9; mean age, 62.9 ± 12.3 years) with oral and oropharyngeal cancer who had metallic dental fillings or implants and underwent contrast-enhanced ultra-high-resolution CT of the neck. Axial CT images were reconstructed using hybrid iterative reconstruction and model-based iterative reconstruction, and the metal artifact reduction algorithm was applied to all images. Finally, hybrid iterative reconstruction + metal artifact reduction algorithms and model-based iterative reconstruction + metal artifact reduction algorithm data were obtained. In the quantitative analysis, SDs were measured in ROIs over the apex of the tongue (metal artifacts) and nuchal muscle (no metal artifacts) and were used to calculate the metal artifact indexes. In a qualitative analysis, 3 radiologists blinded to the patients' conditions assessed the image-quality scores of metal artifact reduction and structural depictions. RESULTS: Hybrid iterative reconstruction + metal artifact reduction algorithms and model-based iterative reconstruction + metal artifact reduction algorithms yielded significantly different metal artifact indexes of 82.2 and 73.6, respectively (95% CI, 2.6-14.7; P < .01). The latter algorithms resulted in significant reduction in metal artifacts and significantly improved structural depictions(P < .01). CONCLUSIONS: Model-based iterative reconstruction + metal artifact reduction algorithms significantly reduced the artifacts and improved the image quality of structural depictions on neck CT images.

DOI： 10.3174/ajnr.A6767

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Transhepatic Placement of Metallic Biliary Stent for Internal Drainage of Persistent Liver Abscesses. International journal

Noriyuki Umakoshi, Yasuaki Arai, Yoshitaka Inaba, Miyuki Sone, Shunsuke Sugawara, Chihiro Itoh, Tetsuya Hasegawa, Yasuyuki Onishi

Journal of vascular and interventional radiology : JVIR 31 ( 6 ) 1000 - 1004 2020.6

Language：English Publishing type：Research paper (scientific journal)

Transhepatic placement of a metallic biliary stent for internal drainage of persistent liver abscesses was performed in 9 patients (males; median age, 65 years; range, 57-82 years) with refractory liver abscess. The median follow-up period was 2.8 months (range, 0.4-50.3 months). Technical success was achieved in all cases without any major complications. Clinical success, defined as the removal of the drainage tube without recurrent symptoms of infection, was achieved in 8 cases. Median duration until removal of the drainage tube from stent placement was 7 days (range, 0-36).

DOI： 10.1016/j.jvir.2020.01.002

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Papers - Umakoshi Noriyuki