| 1. |
Tsurumaru D, Nishimuta Y, Kai S, Oki E, Minoda Y, Ishigami K, Clinical significance of dual-energy dual-layer CT parameters in differentiating small-sized gastrointestinal stromal tumors from leiomyomas, Japanese Journal of Radiology, 10.1007/s11604-023-01473-4, 2023.12. |
| 2. |
Daisuke Tsurumaru· Noriyuki Takatsu · Satohiro Kai · Eiji Oki · Kousei Ishigami, Measurement of circumferential tumor extent of colorectal cancer on CT colonography: relation to clinicopathological features and patient prognosis after surgery, Japanese Journal of Radiology, 2021.10. |
| 3. |
Daisuke Tsurumaru, Yusuke Nishimuta, Satohiro Kai, Eiji Oki, Akihiro Nishie, Factors of incomplete colonoscopy for stenosing colorectal cancer: CT colonography features., Japanese Journal of Radiology, 10.1007/s11604-020-00999-1, 38, 10, 973-978, 2020.08. |
| 4. |
Daisuke Tsurumaru, Yusuke Nishimuta, Toshio Muraki, Yoshiki Asayama, Akihiro Nishie, Eiji Oki, Hiroshi Honda, CT Gastrography "Wall-Carving Technique" of Gastric Cancer: Impact of Contrast Enhancement Based on Layer Depth, Japanese Journal of Radiology, 10.1007/s11604-019-00845-z , 37, 8, 597-604, 2019.08. |
| 5. |
Tsurumaru D, Nishimuta Y, Muraki T, Asayama Y, Nishie A, Oki E, Honda H.
, Gastric cancer with synchronous and metachronous hepatic metastasis predicted by enhancement pattern on multiphasic contrast-enhanced CT., Eur J Radiol, 10.1016/j.ejrad.2018.09.030. , 108, 165-171, 2018.11. |
| 6. |
Daisuke Tsurumarua, Mitsutoshi Miyasaka, Toshio Muraki, Akihiro Nishie,Yoshiki Asayama, Eiji Oki, Yoshinao Oda, Hiroshi Honda, Histopathologic diversity of gastric cancers: Relationship between enhancement pattern on dynamic contrast-enhanced CT and histological type, Eur J Radiol, 10.1016/j.ejrad.2017.10.018, 97, 90-95, 2017.10, PURPOSE: To evaluate the diagnostic value of contrast-enhanced computed tomography gastrography (CE-CTG) to predict the histological type of gastric cancer.
MATERIALS AND METHODS: We analyzed 47 consecutive patients with resectable advanced gastric cancer preoperatively evaluated by multiphasic dynamic contrast-enhanced CT. Two radiologists independently reviewed the CT images and they determined the peak enhancement phase, and then measured the CT attenuation value of the gastric lesion for each phase. The histological types of gastric cancers were assigned to three groups as differentiated-type, undifferentiated-type, and mixed-type. We compared the peak enhancement phase of the three types and compared the CT attenuation values in each phase.
RESULTS: The peak enhancement was significantly different between the three types of gastric cancers for both readers (reader 1, p=0.001; reader 2, p=0.009); most of the undifferentiated types had peak enhancement in the delayed phase. The CT attenuation values of undifferentiated type were significantly higher than those of differentiated or mixed type in the delayed phase according to both readers (reader 1, p=0.002; reader 2, p=0.004).
CONCLUSION: CE-CTG could provide helpful information in diagnosing the histological type of gastric cancers preoperatively.. |
| 7. |
Daisuke Tsurumaru, Mitsutoshi Miyasaka, Toshio Muraki, Yoshiki Asayama, Akihiro Nishie, Eiji Oki, Minako Hirahashi, Tomoyuki Hida, Hiroshi Honda, Diffuse-type gastric cancer: specific enhancement pattern on multiphasic contrast-enhanced computed tomography, Japanese Journal of Radiology, 10.1007/s11604-017-0631-1, 35, 6, 289-295, 2017.03, PURPOSE: To evaluate the enhancement pattern of diffuse-type gastric cancers (DGCs) on multiphasic contrast-enhanced computed tomography gastrography (CECTG).
METHODS AND MATERIALS: We studied 21 consecutive clinically diagnosed DGC patients who underwent CECTG. Gastric distension was obtained using effervescent granules. CT images were obtained 40 s (arterial phase) and 240 s (delayed phase) after injection of a nonionic contrast material. Two radiologists reviewed the CT images and analyzed layers and enhancement patterns. The readers evaluated the enhancement degree (mild, moderate, or marked) and calculated CT attenuation values by placing circular regions of interest (ROIs) within each layer of the lesion. The CT findings of 11 operated cases were correlated with pathological results.
RESULTS: Most lesions were double-layered in the arterial phase, with a moderately enhanced inner layer and a mildly enhanced outer layer, and single-layered in the delayed phase. The mean attenuation value of the inner layer (146 ± 32.8 HU) was significantly higher than that of the outer layer (80.4 ± 15.5 HU) in the arterial phase (p = 0.0001). In the pathological analysis, wall stratification was preserved in nine cases and not preserved in two cases.
CONCLUSION: Most DGCs showed a double-layered pattern in the arterial phase and a single-layered pattern with moderate enhancement in the delayed phase.. |
| 8. |
DAISUKE TSURUMARU, MITSUTOSHI MIYASAKA, YUSUKE NISHIMUTA, Asayama Yoshiki, Akihiro Nishie, Satoshi Kawanami, Minako Hirahashi, Eiji Oki, Hiroshi Honda, Differentiation of Early Gastric Cancer with Ulceration and Resectable Advanced Gastric Cancer using Multiphasic Dynamic Multidetector CT, European Radiology, 10.1007/s00330-015-3938-2, 2016.05, OBJECTIVES: Early gastric cancer with ulceration (EGC-U) mimics advanced gastric cancer (AGC), as EGC-Us and ACGs often have similar endoscopic appearance to ulceration. The purpose of this retrospective study was to determine whether multiphasic dynamic multidetector CT (MDCT) can help differentiate EGC-Us from AGCs.
METHODS: Patients with EGC-Us with ulcer stages Ul-III or IV and AGCs with tumour stages T2 to T4a were enrolled. MDCT images were obtained 40 s (arterial phase), 70 s (portal phase) and 240 s (delayed phase) after injection of non-ionic contrast material. Two readers independently measured the attenuation values of the lesions by placing regions of interest. We compared the EGC-Us and AGCs using the mean attenuation values in each phase and peak enhancement phase. We analysed the diagnostic performance of CT for differentiating EGC-Us from AGCs.
RESULTS: Forty cases (16 EGC-Us and 24 AGCs) were analysed. The mean attenuation values of the EGC-Us were significantly lower than those of the AGCs in both the arterial and portal phases (all p CONCLUSION: Multiphasic dynamic contrast-enhanced MDCT can help differentiate EGC-Us from AGCs.. |
| 9. |
DAISUKE TSURUMARU, Satoshi Kawanami, YUSUKE NISHIMUTA, MITSUTOSHI MIYASAKA, 浅山 良樹, Hiroshi Honda, Contrast-Enhanced CT Colonography Features of Rectal Carcinoid Tumors.
Advances in Computed Tomography, Advances in Computed Tomography, 10.4236/act.2014.32005, 3, 2, 24-30, 2014.06. |
| 10. |
鶴丸 大介, 平賀 聖久, 古森 正宏, Yoshiyuki Shioyama, Masaru Morita, Hiroshi Honda, Role of barium esophagography in patients with locally advanced esophageal cancer: evaluation of response to neoadjuvant chemoradiotherapy, Radiology Research and Practice, 2013.12. |
| 11. |
中島 孝彰, 鶴丸 大介, 西牟田 雄祐, 宮坂 光俊, Akihiro Nishie, Hiroshi Honda, A case of pelvic schwannoma presenting prominent eggshell-like calcification
, Case Report in Radiology, 2013.10. |
| 12. |
古森 正宏, 鶴丸 大介, 浅山 良樹, 平賀 聖久, Fujita Nobuhiro, Yoshihiro Kakeji, Hiroshi Honda, Extent of arterial tumor enhancement measured with preoperative MDCT gastrography is a prognostic factor in advanced gastric cancer after curative resection, American Journal of Roentgenology , 2013.08. |
| 13. |
Daisuke Tsurumaru, Komori Masahiro, Hiraka Kiyohisa, Asayama Yoshiki, Hiroshi Honda, Prediction of intraoperative bleeding during endoscopic treatment in patients with early gastric cancers: utility of contrast-enhanced MDCT gastrography and the wall-carving image technique, Japanese Journal of Radiology, 2012.12, PURPOSE: To assess the ability of the "wall-carving image (WC) technique," which uses vascular images from computed tomography (CT) gastrography, to predict bleeding during endoscopic treatment in patients with early gastric cancers (EGC).
MATERIALS AND METHODS: We analyzed the CT enhancement on WC images of 30 patients with EGC who were treated with endoscopic submucosal dissection (ESD). Patients were divided into two groups-a no-bleeding group and a bleeding group-according to the degree of intraoperative bleeding during the ESD. Patient-related variables (age and sex), lesion-related variables (size, location, and morphological type), a procedure-related variable (procedure time), and the CT enhancement on WC images were compared between two groups. To assess the diagnostic performance of the CT findings in the prediction of intraoperative bleeding, the sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) were calculated.
RESULTS: Lesion location, procedure time, and CT enhancement were all significantly associated with intraoperative bleeding, with p values of 0.046, 0.0007, and 0.0011, respectively. With a cut-off value of 4 or greater indicating positivity for contrast enhancement, the sensitivity, specificity, PPV, and NPV for predicting intraoperative bleeding were 64.3, 93.8, 90.0, and 75.0 %, respectively.
CONCLUSIONS: Contrast enhancement of WC was significantly associated with intraoperative bleeding during ESD.
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| 14. |
古森 正宏, 鶴丸 大介, 浅山 良樹, 松浦 秀司, 平賀 聖久, 本田 浩, Contrast-enhanced MDCT gastrography for detection of early gastric cancer: Initial assessment of "wall-carving image", a novel volume rendering technique, European Journal of Radiology, 2012.08. |
| 15. |
Daisuke Tsurumaru, Gastric mucosal changes caused by Lugol's iodine solution spray: endoscopic features of 64 cases on screening esophagogastroduodenoscopy, Gastroenterol Res Pract, 2010.12. |
| 16. |
Tsurumaru D, Hidaka H, Okada S, Sakoguchi T, Matsuda H, Matsumata T, Nomiyama H, Utsunomiya T, Irie H, Honda H, Self-expandable metallic stents as palliative treatment for malignant colorectal obstruction, Abdominal imaging, 2007.09. |
| 17. |
Tsurumaru D, Masunari S, Utsunomiya T, Takano H, Matsuura S, Nishihara Y, Yao T, Irie H, Honda H, Protein-losing gastropathy with hypertrophic gastric folds: endosonographic findings, J Clin Ultrasound, 2008.01. |
| 18. |
Tsurumaru D, Utsunomiya T, Kayashima K, Matsuura S, Nishihara Y, Yao T, Irie H, Honda H, Heterotopic pancreas of the jejunum diagnosed by double-balloon enteroscopy, Gastrointestinal Endoscopy, 2007.11. |
| 19. |
Tsurumaru D, Utsunomiya T, Matsuura S, Ishibashi T, Kiyohara H, Umezaki T, Fujita N, Nishihara Y, Yao T, Honda H, Primary amyloidosis forming a solitary duodenal tumor, Gastrointestinal Endoscopy, 2009.01. |
