Feasibility of Newly Developed Endoscopic Ultrasound with Zone Sonography Technology for Diagnosis of Pancreatic Diseases
0
조회
0
다운로드
0
인용
0
참고문헌
초록
Background/Aims: To confirm the feasibility of using newly developed endoscopic ultrasound (EUS) with Zone sonographyTM technology (ZST; Fujifilm Corp.). Methods: Seventyfive patients with pancreatic disorders were enrolled: 45 with intraductal papillary mucinous neoplasm; 15 with ductal carcinoma; five with neuroendocrine tumors; three with serous cystic neoplasms; and seven with simple cysts. The endoscopes used were EG-530UR2 and EG-530UT2 (Fujifilm Corp.). Two items were evaluated: visualization depth among four frequencies and image quality after automatic adjustment of sound speed (AASS), assessed using a 5-scale Likert scale by two endosonographers blinded to disease status. Because sound speed could be manually controlled,besides AASS, image quality at sound speeds of 1,440 and 1,600 m/sec were also assessed. Results: In all cases, sufficient images were obtained in the range of 3 cm from the EUS probe. Judgments of image quality before AASS were 3.49±0.50, 3.65±0.48, respectively. After AASS, A and B scored 4.36±0.48 and 4.40±0.49 (p<0.0001). There were significant differences in the data before and after AASS and plus 60 m/sec, but no significant difference between the datasets were seen after AASS and at sound speeds manually set for minus 100 m/sec. Conclusions: EUS with ZST was shown to be feasible in this preliminary experiment. Further evaluation of this novel technology is necessary and awaited.
Abstract
Background/Aims: To confirm the feasibility of using newly developed endoscopic ultrasound (EUS) with Zone sonographyTM technology (ZST; Fujifilm Corp.). Methods: Seventyfive patients with pancreatic disorders were enrolled: 45 with intraductal papillary mucinous neoplasm; 15 with ductal carcinoma; five with neuroendocrine tumors; three with serous cystic neoplasms; and seven with simple cysts. The endoscopes used were EG-530UR2 and EG-530UT2 (Fujifilm Corp.). Two items were evaluated: visualization depth among four frequencies and image quality after automatic adjustment of sound speed (AASS), assessed using a 5-scale Likert scale by two endosonographers blinded to disease status. Because sound speed could be manually controlled,besides AASS, image quality at sound speeds of 1,440 and 1,600 m/sec were also assessed. Results: In all cases, sufficient images were obtained in the range of 3 cm from the EUS probe. Judgments of image quality before AASS were 3.49±0.50, 3.65±0.48, respectively. After AASS, A and B scored 4.36±0.48 and 4.40±0.49 (p<0.0001). There were significant differences in the data before and after AASS and plus 60 m/sec, but no significant difference between the datasets were seen after AASS and at sound speeds manually set for minus 100 m/sec. Conclusions: EUS with ZST was shown to be feasible in this preliminary experiment. Further evaluation of this novel technology is necessary and awaited.
참고문헌 (14)
- Uehara H, "Diagnostic accuracy of endoscopic ultrasound-guided fine needle aspiration for suspected pancreatic malignancy in relation to the size of lesions", J Gastroenterol Hepatol, 26, pp.1256~1261 (2011)
- Fisher L, "Endoscopic ultrasound guided fine needle aspiration of solid pancreatic lesions: performance and outcomes", J Gastroenterol Hepatol, 24, pp.90~96 (2009)
- Sakamoto H, "Prospective comparative study of the EUS guided 25-gauge FNA needle with the 19-gauge Trucut needle and 22-gauge FNA needle in patients with solid pancreatic masses", J Gastroenterol Hepatol, 24, pp.384~390 (2009)
- Hirooka Y, "Case of intraductal papillary mucinous tumor in which endosonography-guided fine-needle aspiration biopsy caused dissemination", J Gastroenterol Hepatol, 18, pp.1323~1324 (2003)
- Hirooka Y, "Diagnosis of pancreatic disorders using contrast-enhanced endoscopic ultrasonography and endoscopic elastography", Clin Gastroenterol Hepatol, 7(11 Suppl), pp.S63~S67 (2009)
- Hirooka Y, "Clinical oncology for pancreatic and biliary cancers: advances and current limitations", World J Clin Oncol, 2, pp.217~224 (2011)
- Niwa K, "Preclinical study of endoscopic ultrasonography with electronic radial scanning echoendoscope", J Gastroenterol Hepatol, 18, pp.828~835 (2003)
- Ishikawa H, "A comparison of image quality between tissue harmonic imaging and fundamental imaging with an electronic radial scanning echoendoscope in the diagnosis of pancreatic diseases", Gastrointest Endosc, 57, pp.931~936 (2003)
- Niwa K, "Comparison of image quality between electronic and mechanical radial scanning echoendoscopes in pancreatic diseases", J Gastroenterol Hepatol, 19, pp.454~459 (2004)
- Napolitano D, "Sound speed correction in ultrasound imaging", Ultrasonics, (44 Suppl 1), pp.e43~e46 (2006)
- Boozari B, "Evaluation of sound speed for detection of liver fibrosis: prospective comparison with transient dynamic elastography and histology", J Ultrasound Med, 29, pp.1581~1588 (2010)
- Weiwad W, "Direct in-vitro measurement of ultrasound velocity in carcinomas, mastopathic tissue, fatty tissue and fibroadenomas of the female breast", Rofo, 171, pp.480~484 (1999)
- Sehgal CM, "Quantitative relationship between tissue composition and scattering of ultrasound", J Acoust Soc Am, 94, pp.1944~1952 (1993)
- Errabolu RL, "Dependence of ultrasonic nonlinear parameter B", A on fat, 1987, pp.9, 180~194