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Naoyuki Tatsumi,Yoshihito Maeda,Hiroshi Nozawa,Shin-ichi Tamai 한국물리학회 2005 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.46 No.1
We have investigated the structural changes of SrBi2Ta2O9 (SBT) and Bi3:75La0:25Ti3O12 (BLT)lms under a high temperature annealing process at 800 C in a vacuum (pressure = 103 Pa),which is an extreme annealing condition. An improvement in the crystalline orientation due to the coalescence of crystalline grains was conrmed. Raman studies revealed that the deciency of Bi3in the Bi oxide layer of SBT was caused by the annealing and occurred to a greater extent than inBLT. This dierence between SBT and BLT is discussed on the basis of the dierence in stabilitybetween (TaO6) and (TiO6) octahedrons.
Takashi Tamura,Yasunobu Yamashita,Kazuki Ueda,Yuki Kawaji,Masahiro Itonaga,Shin-ichi Murata,Kaori Yamamoto,Takeichi Yoshida,Hiroki Maeda,Takao Maekita,Mikitaka Iguchi,Hideyuki Tamai,Masao Ichinose,Jun 대한소화기내시경학회 2017 Clinical Endoscopy Vol.50 No.4
Background/Aims: Endoscopic ultrasonography-guided fine-needle aspiration (EUS-FNA) has been used to diagnose gastrointestinal submucosal tumors (SMTs). Although rapid on-site evaluation (ROSE) has been reported to improve the diagnostic accuracy of EUS-FNA for pancreatic lesions, on-site cytopathologists are not routinely available. Given this background, the usefulness of ROSE by endosonographers themselves for pancreatic tumors has also been reported. However, ROSE by endosonographers for diagnosis of SMT has not been reported. The aim of this study was to evaluate the diagnostic accuracy of EUS-FNA with ROSE by endosonographers for SMT, focusing on diagnosis of gastrointestinal stromal tumor (GIST), compared with that of EUS-FNA alone. Methods: Twenty-two consecutive patients who underwent EUS-FNA with ROSE by endosonographers for SMT followed by surgical resection were identified. Ten historical control subjects who underwent EUS-FNA without ROSE were used for comparison. Results: The overall diagnostic accuracy for SMT was significantly higher in cases with than without ROSE (100% vs. 80%, p=0.03). The number of needle passes by FNA with ROSE by endosonographers tended to be fewer, although accuracy was increased (3.3±1.3 vs. 5.9±3.8, p=0.06). Conclusions: ROSE by endosonographers during EUS-FNA for SMT is useful for definitive diagnosis, particularly for GIST.