A preliminary prospective study to compare the diagnostic performance of assist strain ratio versus manual strain ratio

Verfasser / Beitragende:
[Ei Ueno, Eriko Tohno, Isamu Morishima, Takeshi Umemoto, Koji Waki]
Ort, Verlag, Jahr:
2015
Enthalten in:
Journal of Medical Ultrasonics, 42/4(2015-10-01), 521-531
Format:
Artikel (online)
ID: 605539898
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024 7 0 |a 10.1007/s10396-015-0633-5  |2 doi 
035 |a (NATIONALLICENCE)springer-10.1007/s10396-015-0633-5 
245 0 2 |a A preliminary prospective study to compare the diagnostic performance of assist strain ratio versus manual strain ratio  |h [Elektronische Daten]  |c [Ei Ueno, Eriko Tohno, Isamu Morishima, Takeshi Umemoto, Koji Waki] 
520 3 |a Objectives: The objectives of this study were to demonstrate the non-inferiority of assist strain ratio (ASR)—a newly developed application tool—to manual strain ratio (MSR)—a currently available standard diagnostic tool—and to calculate the sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), and accuracy of MSR and ASR. Methods: Ninety-eight mass lesions in the mammary gland (30 malignant and 68 benign) were included in the study. Skilled physicians performed the elastography scanning by applying minimal vibration. MSRs were obtained and compared with ASRs calculated from the same elastography image to test the correlation between the two groups of data. Results: Diagnostic performance of MSR at a cut-off of 5.0 showed a sensitivity of 84.4 %, a specificity of 80.4 %, an accuracy of 81.6 %, a PPV of 65.5 %, and an NPV of 92.1 %. Diagnostic performance of ASR at a cut-off of 5.0 showed a sensitivity of 74.4 %, a specificity of 84.3 %, an accuracy of 81.3 %, a PPV of 67.7 %, and an NPV of 88.2 %. The areas under the curve (AUCs) for MSR and ASR were found to be 0.885 and 0.875, respectively. Conclusion: ASR demonstrated excellent diagnostic potential and was highly correlated with MSR performed by skilled physicians (r=0.69, p<0.05). 
540 |a The Japan Society of Ultrasonics in Medicine, 2015 
690 7 |a Elastography  |2 nationallicence 
690 7 |a Strain ratio  |2 nationallicence 
690 7 |a FLR  |2 nationallicence 
690 7 |a Assist strain ratio  |2 nationallicence 
690 7 |a Breast cancer  |2 nationallicence 
700 1 |a Ueno  |D Ei  |u Department of Senology, Tsukuba Medical Center Foundation, Tsukuba, Ibaraki, Japan  |4 aut 
700 1 |a Tohno  |D Eriko  |u Total Health Evaluation Center Tsukuba, Tsukuba Medical Center Foundation, Tsukuba, Ibaraki, Japan  |4 aut 
700 1 |a Morishima  |D Isamu  |u Department of Senology, Tsukuba Medical Center Foundation, Tsukuba, Ibaraki, Japan  |4 aut 
700 1 |a Umemoto  |D Takeshi  |u Department of Senology, Tsukuba Medical Center Foundation, Tsukuba, Ibaraki, Japan  |4 aut 
700 1 |a Waki  |D Koji  |u Medical Systems Engineering Division 2, Hitachi Aloka Medical, Ltd., Kokubunji, Tokyo, Japan  |4 aut 
773 0 |t Journal of Medical Ultrasonics  |d Springer Japan  |g 42/4(2015-10-01), 521-531  |x 1346-4523  |q 42:4<521  |1 2015  |2 42  |o 10396 
856 4 0 |u https://doi.org/10.1007/s10396-015-0633-5  |q text/html  |z Onlinezugriff via DOI 
898 |a BK010053  |b XK010053  |c XK010000 
900 7 |a Metadata rights reserved  |b Springer special CC-BY-NC licence  |2 nationallicence 
908 |D 1  |a research-article  |2 jats 
949 |B NATIONALLICENCE  |F NATIONALLICENCE  |b NL-springer 
950 |B NATIONALLICENCE  |P 856  |E 40  |u https://doi.org/10.1007/s10396-015-0633-5  |q text/html  |z Onlinezugriff via DOI 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Ueno  |D Ei  |u Department of Senology, Tsukuba Medical Center Foundation, Tsukuba, Ibaraki, Japan  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Tohno  |D Eriko  |u Total Health Evaluation Center Tsukuba, Tsukuba Medical Center Foundation, Tsukuba, Ibaraki, Japan  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Morishima  |D Isamu  |u Department of Senology, Tsukuba Medical Center Foundation, Tsukuba, Ibaraki, Japan  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Umemoto  |D Takeshi  |u Department of Senology, Tsukuba Medical Center Foundation, Tsukuba, Ibaraki, Japan  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Waki  |D Koji  |u Medical Systems Engineering Division 2, Hitachi Aloka Medical, Ltd., Kokubunji, Tokyo, Japan  |4 aut 
950 |B NATIONALLICENCE  |P 773  |E 0-  |t Journal of Medical Ultrasonics  |d Springer Japan  |g 42/4(2015-10-01), 521-531  |x 1346-4523  |q 42:4<521  |1 2015  |2 42  |o 10396