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List of Papers
Kazutoshi Okamura Last modified date：2024.04.24

Lecturer / Division of Maxillofacial Diagnostic and Surgical Sciences / Comprehensive Dentistry / Kyushu University Hospital


Papers
1. Supakorn Suntornchatchaweach , Kenji Hoshi, Kazutoshi Okamura, Kazunori Yoshiura, Kamonwan Soonklang, Ichiro Takahashi, Observational study investigating the relationship between maxillomandibular characteristics and temporomandibular disc conditions in female patients with a skeletal class III pattern, J Orthod Sci., 10.4103/jos.jos_28_23, 2023.11.
2. Takarabe Shinya, Okamura Kazutoshi, Kuramoto Taku, Tokumori Kenji, Kato Toyoyuki, Yoshiura Kazunori, Relationship between image information content and observer performance in digital intraoral radiography, ORAL RADIOLOGY, 10.1007/s11282-022-00662-7, 2022.10.
3. Sakai Yuki、Kitamoto Erina、Okamura Kazutoshi、Takarabe Shinya、Shirasaka Takashi、Mikayama Ryoji、Kondo Masatoshi、Tatsumi Masato、Kojima Tsukasa、Kato Toyoyuki、Yoshiura Kazunori, Low-radiation dose scan protocol for preoperative imaging for dental implant surgery using deep learning-based reconstruction in multidetector CT, Oral Radiology, 10.1007/s11282-021-00584-w, 2022.01.
4. Shinya Takarabe, Taku Kuramoto, Yusuke Shibayama, Hiroki Tsuru, Masato Tatsumi, Toyoyuki Kato, Kazutoshi Okamura, Kazunori Yoshiura, Effect of beam quality and readout direction in the edge profile on the modulation transfer function of photostimulable phosphor systems via the edge method, Journal of Medical Imaging, 10.1117/1.jmi.8.4.043501, 8, 04, 2021.07.
5. Kuramoto T, Takarabe S, Shiotsuki K, Shibayama Y, Hamasaki H, Akamine H, Okamura K, Chikui T, Kato T, Yoshiura K, X-ray dose reduction using additional copper filtration for dental cone beam CT, Phys Med., 81, 302-307, 2021.01.
6. Sakai Y, Okamura K, Kitamoto E, Kami YN, Shirasaka T, Mikayama R, Tatsumi M, Kondo M, Kato T, Yoshiura K, Improved scan method for dental imaging using multidetector computed tomography: a phantom study, Dentomaxillofac Radiology, 49, 6, 2020.09.
7. Kuramoto T, Takarabe S, Okamura K, Shiotsuki K, Shibayama Y, Tsuru H, Akamine H, Tatsumi M, Kato T, Morishita J, Yoshiura K, Effect of differences in pixel size on image characteristics of digital intraoral radiographic systems: a physical and visual evaluation, Dentomaxillofac Radiology, 49, 6, 2020.09.
8. Weerawanich W, Shimizu M, Takeshita Y, Okamura K, Yoshida S, Jasa GR, Yoshiura K, Evaluation of cone-beam computed tomography diagnostic image quality using cluster signal-to-noise analysis, Oral Radiology, 35, 1, 59-67, 2019.01.
9. Warangkana Weerawanich, Mayumi Shimizu, Yohei Takeshita, Kazutoshi Okamura, Shoko Yoshida, Gainer R Jasa, Kazunori Yoshiura., Determination of optimum exposure parameters for dentoalveolar structures of the jaws using the CB MercuRay system with cluster signal-to-noise analysis, Oral Radiology, 2019.10.
10. Toru Chikui, Yasuo Yamashita, Yoshitaka Kise, Tomonori Saito, Kazutoshi Okamura, Kazunori Yoshiura, Estimation of proton density fat fraction of the salivary gland, BRITISH JOURNAL OF RADIOLOGY, 10.1259/bjr.20170671, 91, 1085, 2018.05.
11. Warangkana Weerawanich, Mayumi Shimizu, Yohei Takeshita, Kazutoshi Okamura, Shoko Yoshida, Gainer R Jasa, Kazunori Yoshiura, Evaluation of cone-beam computed tomography diagnostic image quality using cluster signal-to-noise analysis, Oral Radiology, in press, 2018.04.
12. Yohei Takeshita, Mayumi Shimizu, Gainer Raul Jasa, Warangkana Weerawanich, Kazutoshi Okamura, Shoko Yoshida, Kenji Tokumori, Junichi Asaumi, Kazunori Yoshiura, Prediction of detectability of the mandibular canal by quantitative image quality evaluation using cone beam CT, Dentomaxillofacial Radiology, in press, 2018.01.
13. Warangkana Weerawanich, Mayumi Shimizu, Kazutoshi Okamura, Shoko Yoshida, Kazunori Yoshiura, Cluster signal-to-noise analysis for evaluation of the information content in an image,, Dentomaxillofacial Radiology, in press, 2017.10.
14. Gainer Raul Jasa, Mayumi Shimizu, Kazutoshi Okamura, Kenji Tokumori, Yohei Takeshita, Warangkana Weerawanich, Kazunori Yoshiura,, Effects of exposure parameters and slice thickness on detecting clear and unclear mandibular canals using cone beam CT, Dentomaxillofacial Radiology, 10.1259/dmfr.20160315., 2017.05.
15. Yohei Takeshita, Mayumi Shimizu, Kazutoshi Okamura, Shoko Yoshida, Warangkana Weerawanich, Kenji Tokumori, Jasa GR, Kazunori Yoshiura, A new method to evaluate image quality of CBCT images quantitatively without observers, Dentomaxillofacial Radiology, in press, 2017.03.
16. Mayumi Shimizu, Kazutoshi Okamura, Yoshitaka Kise, Yohei Takeshita, Hiroko Furuhashi, Warangkana Weerawanich, Masafumi Moriyama, Yukiko Ohyama, Sachiko Furukawa, Seiji Nakamura, Kazunori Yoshiura, Effectiveness of imaging modalities for screening IgG4-related dacryoadenitis and sialadenitis (Mikulicz's disease) and for differentiating it from Sjögren's syndrome (SS), with an emphasis on sonography, Arthritis Research & Therapy, 17, 223-234, 2015.08.
17. Mayumi Shimizu, Dai Ogawa, Kazutoshi Okamura, Toshiyuki Kawazu, Toru Chikui, Kazunori Yoshiura, Dentigerous cysts with calcification mimicking odontogenic tumors: differential diagnosis by CT, Oral Radiology, 10.1007/s11282-014-0173-5, 2014.04.
18. Kami YN, Chikui T, Okamura K, Kubota Y, Oobu K, Yabuuchi H, Nakayama E, Hashimoto K, Yoshiura K, Imaging findings of neurogenic tumours in the head and neck region, Dentomaxillofac Radiol, 41, 1, 18-23, 2012.01.
19. Okamura K, Yoshiura K, Tatsumi M, Kawazu, T, Chikui T, Shimizu M, Goto, T, A new method for evaluating perceptible contrast information in digital intraoral radiographic systems, Oral Radiol, 27, 2, 98-101, 2011.12.
20. Kabashima H, Mizobe K, Nakamuta H, Fujiwara H, Okamura K, Unemori M, Akamine A, Yoshiura K, Maeda K, The usefulness of three-dimensional imaging in the diagnosis and treatment of clinically ambiguous gingival swelling, J Oral Sci, 53, 2, 257-261, 2011.06.
21. Tutsumi K, Chikui T, Okamura K, Yoshiura K, Accuracy of Linear Measurement and the Measurement Limits of Thin Objects with Cone Beam Computed Tomography: Effects of Measurement Directions and of Phantom Locations in the Fields of View, J ORAL MAX IMPL, 26, 1, 91-100, 2011.02.
22. Chikui T, Shimizu M, Kawazu T, Okamura K, Shiraishi T, Yoshiura K, A quantitative analysis of sonographic images of the salivary gland: a comparison between sonographic and sialographic findings, Ultrasound Med Biol., 35, 8, 1257-64, 2009.08.
23. Shimizu M, Moriyama M, Okamura K, Kawazu T, Chikui T, Goto TK, Ohyama Y, Nakamura S, Yoshiura K, Sonographic diagnosis for Mikulicz disease, Oral Surg Oral Med Oral Pathol Oral Radiol Endod, 108, 1, 105-13, 2009.05.
24. Shimizu M, Okamura K, Yoshiura K, Ohyama Y, Nakamura S, Sonographic diagnosis of Sjögren syndrome: evaluation of parotid gland vascularity as a diagnostic tool, Oral Surg Oral Med Oral Pathol Oral Radiol Endod, 106(10):587-594, 2008.10.
25. Nakayama E, Okamura K, Mitsuyasu T, Kawazu T, Nakamura N, Nakamura S, Yoshiura K., A newly developed interventional sialendoscope for a completely nonsurgical sialolithectomy using intracorporeal electrohydraulic lithotripsy., J Oral Maxillofac Surg, 65(7):1402-5, 2007.07.
26. Tatsushi Tokuyasu, Yusuke Fujii, Motoji Yamamoto, Kazutoshi Okamura, and Kazunori Yoshiura, A Training Simulator for Intraoral Radiography, Proceedings of the 2006 IEEE/RSJ International Conference on Intelligent Robot and Systems,, 149-154, 2006.10.
27. Shimizu M, Okamura K, Yoshiura K, Ohyama Y, Nakamura S, Kinukawa N, Sonographic diagnostic criteria for screening Sjögren's syndrome, Oral Surg. Oral Med. Oral Pathol. Oral Radiol. and Endod, 102(1): 85-93, 2006.07.
28. Shimizu M, Osa N, Okamura K, Yoshiura K, CT analysis of the Stafne's bone defects of the mandible, Dentomaxillofac. Radiol., 35(2): 95-102, 2006.05.
29. Chikui T, Okamura K, Tokumori K, Nakamura S, Shimizu M, Koga M, Yoshiura K, Quantitative analyses of sonographic images of the parotid gland in patients with Sjögren’s syndrome, Ultrasound Med Biol, 32(5):617-22., 2006.05.
30. Development of a Training System for Intraoral Radiograph -Evaluation for simulated intraoral
radiograph-.
31. Yoshiura K, Nakayama E, Shimizu M, Goto TK, Chikui T, Kawazu T, Okamura K, Effects of the automatic exposure compensation on the proximal caries diagnosis, Dentomaxillofac. Radiol., 10.1259/dmfr/88681265, 34, 3, 140-144, 34(3): 140-144, 2005.03.
32. Yoshiura K, Okamura K, Tokumori K, Nakayama E, Chikui T, Goto TK, Shimizu M, Kawazu T, Correlation between diagnostic accuracy and perceptibility, Dentomaxillofac. Radiol., 10.1259/dmfr/13550415, 34, 6, 350-352, 34(6): 350-352, 2005.01.
33. Yoshiura K, Welander U, McDavid WD, Li G, Shi X-Q, Nakayama E, Shimizu M, Okamura K, Kanda S, Comparison of the psychophysical properties of various intraoral film and digital systems by means of the perceptibility curve test, Dentomaxillofac. Radiol., 10.1259/dmfr/29102849, 33, 2, 98-102, 33(2): 98-102, 2004.01.
34. Hariya Y, Yuasa K, Nakayama E, Kawazu T, Okamura K, Kanda S., Value of computed tomography findings in differentiating between intraosseous malignant tumors and osteomyelitis of the mandible affecting the masticator space, Oral Surg Oral Med Oral Pathol Oral Radiol Endod., 10.1067/moe.2003.134, 95, 4, 503-509, 95(4):503-9, 2003.04.
35. Nakayama E, Yuasa K, Beppu M, Kawazu T, Okamura K, Kanda S., Interventional sialendoscopy: a new procedure for noninvasive insertion and a minimally invasive sialolithectomy., J Oral Maxillofac Surg., 10.1016/S0278-2391(03)00691-8, 61, 10, 1233-1236, 61(10):1233-6, 2003.10.
36. Goto TK, Tokumori K, Nakamura Y, Yahagi M, Yuasa K, Okamura K, Kanda S., Volume changes in human masticatory muscles between jaw closing and opening, J Dent Res. , 81, 6, 428-432, 81(6):428-32., 2002.06.
37. Yoshiura K, Welander U, Shi XQ, Li G, Kawazu T, Tatsumi M, Okamura K, McDavid WD, Kanda S., Conventional and predicted perceptibility curves for contrast-enhanced direct digital intraoral radiographs., Dentomaxillofac Radiol., 10.1038/sj.dmfr.4600607, 30, 4, 219-225, 30(4):219-25, 2001.07.
38. Development of a computer simulation system of intraoral radiography using perspective vollume rendering of CT Data.
39. Shimizu M, Tokumori K, Okamura K, Chikui T, Yoshiura K, Kanda S., Possibility of sialographic sonography: a Doppler phantom study., ORAL SURGERY ORAL MEDICINE ORAL PATHOLOGY ORAL RADIOLOGY AND ENDODONTICS, 10.1067/moe.2001.113832, 91, 6, 719-727, 2001.06.
40. Okamura, K., Tanaka, T., Yoshiura, K., Tokumori, K., Yuasa, K. and Kanda, S., Integration of a picture archiving and communication system with videocapture and computed radiography in a dental hospital, Dentomaxillofac Radiol, 10.1038/sj.dmfr.4600599, 30, 3, 172-178, Vol.72,pp.72-178, 2001.01.
41. Goto TK, Yoshiura K, Nakayama E, Yuasa K, Tabata O, Nakano T, Kawazu T, Tanaka T, Miwa K, Shimizu M, Chikui T, Okamura K, Kanda S., The combined use of US and MR imaging for the diagnosis of masses in the parotid region., ACTA RADIOLOGICA, 10.1080/028418501127346305, 42, 1, 88-95, 2001.01.


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