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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2015.1
- 수록면
- 644 - 649 (6page)
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초록· 키워드
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Purpose: To assess the potential of dual-energy computed tomography (DECT) to identify urinary stone components, particularly uric acid and calcium oxalate monohydrate, which are unsuitable for extracorporeal shock wave lithotripsy (ESWL). Materials and Methods: This clinical study included 246 patients who underwent removal of urinary stones and an analysis of stone components between November 2009 and August 2013. All patients received preoperative DECT using two energy values (80 kVp and 140 kVp). Hounsfield units (HU) were measured and matched to the stone component. Results: Significant differences in HU values were observed between uric acid and nonuric acid stones at the 80 and 140 kVp energy values (p<0.001). All uric acid stones were red on color-coded DECT images, whereas 96.3% of the nonuric acid stones were blue. Patients with calcium oxalate stones were divided into two groups according to the amount of monohydrate (calcium oxalate monohydrate group: monohydrate≥90%, calcium oxalate dihydrate group: monohydrate<90%). Significant differences in HU values were detected between the two groups at both energy values (p<0.001). Conclusions: DECT improved the characterization of urinary stone components and was a useful method for identifying uric acid and calcium oxalate monohydrate stones, which are unsuitable for ESWL.
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참고문헌 (28)
참고문헌 신청
Sourtzis S / 1999 / Radiologic investigation of renal colic: unenhanced helical CT compared with excretory urography / AJR Am J Roentgenol 172:1491~1494
Miller OF / 1998 / Prospective comparison of unenhanced spiral computed tomography and intravenous urogram in the evaluation of acute flank pain / Urology 52:982~987
Yilmaz S / 1998 / Renal colic: comparison of spiral CT, US and IVU in the detection of ureteral calculi / Eur Radiol 8:212~217
Niall O / 1999 / A comparison of noncontrast computerized tomography with excretory urography in the assessment of acute flank pain / J Urol 161:534~537
Wang JH / 2008 / Prospective comparison of unenhanced spiral computed tomography and intravenous urography in the evaluation of acute renal colic / J Chin Med Assoc 71:30~36
Miller OF / 1998 / Prospective comparison of unenhanced spiral computed tomography and intravenous urogram in the evaluation of acute flank pain / Urology 52:982~987
Yilmaz S / 1998 / Renal colic: comparison of spiral CT, US and IVU in the detection of ureteral calculi / Eur Radiol 8:212~217
Niall O / 1999 / A comparison of noncontrast computerized tomography with excretory urography in the assessment of acute flank pain / J Urol 161:534~537
Wang JH / 2008 / Prospective comparison of unenhanced spiral computed tomography and intravenous urography in the evaluation of acute renal colic / J Chin Med Assoc 71:30~36
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