메뉴 건너뛰기




Volumn 74, Issue 4, 2015, Pages 1077-1085

Comparison of fitting methods and b-value sampling strategies for intravoxel incoherent motion in breast cancer

Author keywords

b value optimization; breast cancer; diffusion gradient; diffusion weighted MRI; IVIM

Indexed keywords

DIFFUSION; DISEASES; SAMPLING;

EID: 84941909961     PISSN: 07403194     EISSN: 15222594     Source Type: Journal    
DOI: 10.1002/mrm.25484     Document Type: Article
Times cited : (104)

References (59)
  • 1
    • 61349123591 scopus 로고    scopus 로고
    • Diffusion-weighted magnetic resonance imaging as a cancer biomarker: Consensus and recommendations
    • Padhani AR, Liu G, Koh DM, et al., Diffusion-weighted magnetic resonance imaging as a cancer biomarker: consensus and recommendations. Neoplasia 2009; 11: 102-125.
    • (2009) Neoplasia , vol.11 , pp. 102-125
    • Padhani, A.R.1    Liu, G.2    Koh, D.M.3
  • 2
    • 0029403019 scopus 로고
    • Inferring microstructural features and the physiological state of tissues from diffusion-weighted images
    • Basser PJ,. Inferring microstructural features and the physiological state of tissues from diffusion-weighted images. NMR Biomed 1995; 8: 333-344.
    • (1995) NMR Biomed , vol.8 , pp. 333-344
    • Basser, P.J.1
  • 4
    • 81355160433 scopus 로고    scopus 로고
    • Integration of diffusion-weighted MRI data and a simple mathematical model to predict breast tumor cellularity during neoadjuvant chemotherapy
    • Atuegwu NC, Arlinghaus LR, Li X, Welch EB, Chakravarthy BA, Gore JC, Yankeelov TE,. Integration of diffusion-weighted MRI data and a simple mathematical model to predict breast tumor cellularity during neoadjuvant chemotherapy. Magn Reson Med 2011; 66: 1689-1696.
    • (2011) Magn Reson Med , vol.66 , pp. 1689-1696
    • Atuegwu, N.C.1    Arlinghaus, L.R.2    Li, X.3    Welch, E.B.4    Chakravarthy, B.A.5    Gore, J.C.6    Yankeelov, T.E.7
  • 5
    • 44449141936 scopus 로고    scopus 로고
    • Relation between cancer cellularity and apparent diffusion coefficient values using diffusion-weighted magnetic resonance imaging in breast cancer
    • Yoshikawa MI, Ohsumi S, Sugata S, Kataoka M, Takashima S, Mochizuki T, Ikura H, Imai Y,. Relation between cancer cellularity and apparent diffusion coefficient values using diffusion-weighted magnetic resonance imaging in breast cancer. Radiat Med 2008; 26: 222-226.
    • (2008) Radiat Med , vol.26 , pp. 222-226
    • Yoshikawa, M.I.1    Ohsumi, S.2    Sugata, S.3    Kataoka, M.4    Takashima, S.5    Mochizuki, T.6    Ikura, H.7    Imai, Y.8
  • 7
    • 73449130199 scopus 로고    scopus 로고
    • Quantitative diffusion-weighted imaging as an adjunct to conventional breast MRI for improved positive predictive value
    • Partridge SC, DeMartini WB, Kurland BF, Eby PR, White SW, Lehman CD,. Quantitative diffusion-weighted imaging as an adjunct to conventional breast MRI for improved positive predictive value. AJR Am J Roentgenol 2009; 193: 1716-1722.
    • (2009) AJR Am J Roentgenol , vol.193 , pp. 1716-1722
    • Partridge, S.C.1    DeMartini, W.B.2    Kurland, B.F.3    Eby, P.R.4    White, S.W.5    Lehman, C.D.6
  • 9
    • 79953706572 scopus 로고    scopus 로고
    • Diffusion-weighted magnetic resonance imaging in focal breast lesions: Analysis of 78 cases with pathological correlation
    • Fornasa F, Pinali L, Gasparini A, Toniolli E, Montemezzi S,. Diffusion-weighted magnetic resonance imaging in focal breast lesions: analysis of 78 cases with pathological correlation. Radiol Med 2011; 116: 264-275.
    • (2011) Radiol Med , vol.116 , pp. 264-275
    • Fornasa, F.1    Pinali, L.2    Gasparini, A.3    Toniolli, E.4    Montemezzi, S.5
  • 10
    • 0022969218 scopus 로고
    • MR imaging of intravoxel incoherent motions: Application to diffusion and perfusion in neurologic disorders
    • Le Bihan D, Breton E, Lallemand D, Grenier P, Cabanis E, Laval-Jeantet M,. MR imaging of intravoxel incoherent motions: application to diffusion and perfusion in neurologic disorders. Radiology 1986; 161: 401-407.
    • (1986) Radiology , vol.161 , pp. 401-407
    • Le Bihan, D.1    Breton, E.2    Lallemand, D.3    Grenier, P.4    Cabanis, E.5    Laval-Jeantet, M.6
  • 11
    • 84866611123 scopus 로고    scopus 로고
    • Intravoxel incoherent motion diffusion-weighted imaging in nonalcoholic fatty liver disease: A 3.0-T MR study
    • Guiu B, Petit JM, Capitan V, et al., Intravoxel incoherent motion diffusion-weighted imaging in nonalcoholic fatty liver disease: a 3.0-T MR study. Radiology 2012; 265: 96-103.
    • (2012) Radiology , vol.265 , pp. 96-103
    • Guiu, B.1    Petit, J.M.2    Capitan, V.3
  • 13
    • 73349104651 scopus 로고    scopus 로고
    • Differentiation of pancreas carcinoma from healthy pancreatic tissue using multiple b-values: Comparison of apparent diffusion coefficient and intravoxel incoherent motion derived parameters
    • Lemke A, Laun FB, Klauss M, Re TJ, Simon D, Delorme S, Schad LR, Stieltjes B,. Differentiation of pancreas carcinoma from healthy pancreatic tissue using multiple b-values: comparison of apparent diffusion coefficient and intravoxel incoherent motion derived parameters. Invest Radiol 2009; 44: 769-775.
    • (2009) Invest Radiol , vol.44 , pp. 769-775
    • Lemke, A.1    Laun, F.B.2    Klauss, M.3    Re, T.J.4    Simon, D.5    Delorme, S.6    Schad, L.R.7    Stieltjes, B.8
  • 17
    • 84890796544 scopus 로고    scopus 로고
    • Intravoxel incoherent motion (IVIM) in evaluation of breast lesions: Comparison with conventional DWI
    • Liu C, Liang C, Liu Z, Zhang S, Huang B,. Intravoxel incoherent motion (IVIM) in evaluation of breast lesions: comparison with conventional DWI. Eur J Radiol 2013; 82: e782-e789.
    • (2013) Eur J Radiol , vol.82 , pp. e782-e789
    • Liu, C.1    Liang, C.2    Liu, Z.3    Zhang, S.4    Huang, B.5
  • 18
    • 84874334443 scopus 로고    scopus 로고
    • Diffusion-weighted imaging of the liver with multiple b values: Effect of diffusion gradient polarity and breathing acquisition on image quality and intravoxel incoherent motion parameters-A pilot study
    • Dyvorne HA, Galea N, Nevers T, et al., Diffusion-weighted imaging of the liver with multiple b values: effect of diffusion gradient polarity and breathing acquisition on image quality and intravoxel incoherent motion parameters-A pilot study. Radiology 2013; 266: 920-929.
    • (2013) Radiology , vol.266 , pp. 920-929
    • Dyvorne, H.A.1    Galea, N.2    Nevers, T.3
  • 20
    • 84870064674 scopus 로고    scopus 로고
    • Diffusion-weighted intravoxel incoherent motion imaging of renal tumors with histopathologic correlation
    • Chandarana H, Kang SK, Wong S, et al., Diffusion-weighted intravoxel incoherent motion imaging of renal tumors with histopathologic correlation. Invest Radiol 2012; 47: 688-696.
    • (2012) Invest Radiol , vol.47 , pp. 688-696
    • Chandarana, H.1    Kang, S.K.2    Wong, S.3
  • 21
    • 84856963088 scopus 로고    scopus 로고
    • Investigation of renal lesions by diffusion-weighted magnetic resonance imaging applying intravoxel incoherent motion-derived parameters-initial experience
    • Rheinheimer S, Stieltjes B, Schneider F, Simon D, Pahernik S, Kauczor HU, Hallscheidt P,. Investigation of renal lesions by diffusion-weighted magnetic resonance imaging applying intravoxel incoherent motion-derived parameters-initial experience. Eur J Radiol 2012; 81: e310-e316.
    • (2012) Eur J Radiol , vol.81 , pp. e310-e316
    • Rheinheimer, S.1    Stieltjes, B.2    Schneider, F.3    Simon, D.4    Pahernik, S.5    Kauczor, H.U.6    Hallscheidt, P.7
  • 24
    • 84878677365 scopus 로고    scopus 로고
    • Characterization and therapy monitoring of head and neck carcinomas using diffusion-imaging-based intravoxel incoherent motion parameters-preliminary results
    • Hauser T, Essig M, Jensen A, Gerigk L, Laun FB, Munter M, Simon D, Stieltjes B,. Characterization and therapy monitoring of head and neck carcinomas using diffusion-imaging-based intravoxel incoherent motion parameters-preliminary results. Neuroradiology 2013; 55: 527-536.
    • (2013) Neuroradiology , vol.55 , pp. 527-536
    • Hauser, T.1    Essig, M.2    Jensen, A.3    Gerigk, L.4    Laun, F.B.5    Munter, M.6    Simon, D.7    Stieltjes, B.8
  • 25
    • 84874000924 scopus 로고    scopus 로고
    • Diffusion-weighted imaging in rectal carcinoma patients without and after chemoradiotherapy: A comparative study with histology
    • Bauerle T, Seyler L, Munter M, et al., Diffusion-weighted imaging in rectal carcinoma patients without and after chemoradiotherapy: a comparative study with histology. Eur J Radiol 2013; 82: 444-452.
    • (2013) Eur J Radiol , vol.82 , pp. 444-452
    • Bauerle, T.1    Seyler, L.2    Munter, M.3
  • 28
    • 84872900209 scopus 로고    scopus 로고
    • Intravoxel incoherent motion MR imaging for prostate cancer: An evaluation of perfusion fraction and diffusion coefficient derived from different b-value combinations
    • Pang Y, Turkbey B, Bernardo M, Kruecker J, Kadoury S, Merino MJ, Wood BJ, Pinto PA, Choyke PL,. Intravoxel incoherent motion MR imaging for prostate cancer: an evaluation of perfusion fraction and diffusion coefficient derived from different b-value combinations. Magn Reson Med 2013; 69: 553-562.
    • (2013) Magn Reson Med , vol.69 , pp. 553-562
    • Pang, Y.1    Turkbey, B.2    Bernardo, M.3    Kruecker, J.4    Kadoury, S.5    Merino, M.J.6    Wood, B.J.7    Pinto, P.A.8    Choyke, P.L.9
  • 29
    • 84864831386 scopus 로고    scopus 로고
    • Correlation of the apparent diffusion coefficiency values on diffusion-weighted imaging with prognostic factors for breast cancer
    • Choi SY, Chang YW, Park HJ, Kim HJ, Hong SS, Seo DY,. Correlation of the apparent diffusion coefficiency values on diffusion-weighted imaging with prognostic factors for breast cancer. Br J Radiol 2012; 85: e474-479.
    • (2012) Br J Radiol , vol.85 , pp. e474-e479
    • Choi, S.Y.1    Chang, Y.W.2    Park, H.J.3    Kim, H.J.4    Hong, S.S.5    Seo, D.Y.6
  • 30
    • 78650650992 scopus 로고    scopus 로고
    • Correlation of the apparent diffusion coefficient value and dynamic magnetic resonance imaging findings with prognostic factors in invasive ductal carcinoma
    • Jeh SK, Kim SH, Kim HS, Kang BJ, Jeong SH, Yim HW, Song BJ,. Correlation of the apparent diffusion coefficient value and dynamic magnetic resonance imaging findings with prognostic factors in invasive ductal carcinoma. J Magn Reson Imaging 2011; 33: 102-109.
    • (2011) J Magn Reson Imaging , vol.33 , pp. 102-109
    • Jeh, S.K.1    Kim, S.H.2    Kim, H.S.3    Kang, B.J.4    Jeong, S.H.5    Yim, H.W.6    Song, B.J.7
  • 31
    • 77956582398 scopus 로고    scopus 로고
    • Apparent Diffusion Coefficient (ADC) as a quantitative parameter in diffusion weighted MR imaging in gynecologic cancer: Dependence on b-values used
    • Kallehauge JF, Tanderup K, Haack S, Nielsen T, Muren LP, Fokdal L, Lindegaard JC, Pedersen EM,. Apparent Diffusion Coefficient (ADC) as a quantitative parameter in diffusion weighted MR imaging in gynecologic cancer: dependence on b-values used. Acta Oncol 2010; 49: 1017-1022.
    • (2010) Acta Oncol , vol.49 , pp. 1017-1022
    • Kallehauge, J.F.1    Tanderup, K.2    Haack, S.3    Nielsen, T.4    Muren, L.P.5    Fokdal, L.6    Lindegaard, J.C.7    Pedersen, E.M.8
  • 32
    • 77957358106 scopus 로고    scopus 로고
    • Renal cell carcinoma: Diffusion-weighted MR imaging for subtype differentiation at 3.0 T
    • Wang H, Cheng L, Zhang X, Wang D, Guo A, Gao Y, Ye H,. Renal cell carcinoma: diffusion-weighted MR imaging for subtype differentiation at 3.0 T. Radiology 2010; 257: 135-143.
    • (2010) Radiology , vol.257 , pp. 135-143
    • Wang, H.1    Cheng, L.2    Zhang, X.3    Wang, D.4    Guo, A.5    Gao, Y.6    Ye, H.7
  • 33
    • 84864721315 scopus 로고    scopus 로고
    • In vivo assessment of optimal b-value range for perfusion-insensitive apparent diffusion coefficient imaging
    • Freiman M, Voss SD, Mulkern RV, Perez-Rossello JM, Callahan MJ, Warfield SK,. In vivo assessment of optimal b-value range for perfusion-insensitive apparent diffusion coefficient imaging. Med Phys 2012; 39: 4832-4839.
    • (2012) Med Phys , vol.39 , pp. 4832-4839
    • Freiman, M.1    Voss, S.D.2    Mulkern, R.V.3    Perez-Rossello, J.M.4    Callahan, M.J.5    Warfield, S.K.6
  • 34
    • 79953781607 scopus 로고    scopus 로고
    • Imaging parameter effects in apparent diffusion coefficient determination of magnetic resonance imaging
    • Ogura A, Hayakawa K, Miyati T, Maeda F,. Imaging parameter effects in apparent diffusion coefficient determination of magnetic resonance imaging. Eur J Radiol 2011; 77: 185-188.
    • (2011) Eur J Radiol , vol.77 , pp. 185-188
    • Ogura, A.1    Hayakawa, K.2    Miyati, T.3    Maeda, F.4
  • 35
    • 40449088884 scopus 로고    scopus 로고
    • From diffusion-weighted MRI to anomalous diffusion imaging
    • Hall MG, Barrick TR,. From diffusion-weighted MRI to anomalous diffusion imaging. Magn Reson Med 2008; 59: 447-455.
    • (2008) Magn Reson Med , vol.59 , pp. 447-455
    • Hall, M.G.1    Barrick, T.R.2
  • 36
    • 19544371362 scopus 로고    scopus 로고
    • Diffusional kurtosis imaging: The quantification of non-Gaussian water diffusion by means of magnetic resonance imaging
    • Jensen JH, Helpern JA, Ramani A, Lu H, Kaczynski K,. Diffusional kurtosis imaging: the quantification of non-gaussian water diffusion by means of magnetic resonance imaging. Magn Reson Med 2005; 53: 1432-1440.
    • (2005) Magn Reson Med , vol.53 , pp. 1432-1440
    • Jensen, J.H.1    Helpern, J.A.2    Ramani, A.3    Lu, H.4    Kaczynski, K.5
  • 37
    • 83755229561 scopus 로고    scopus 로고
    • Estimating non-Gaussian diffusion model parameters in the presence of physiological noise and Rician signal bias
    • Kristoffersen A,. Estimating non-Gaussian diffusion model parameters in the presence of physiological noise and Rician signal bias. J Magn Reson Imaging 2012; 35: 181-189.
    • (2012) J Magn Reson Imaging , vol.35 , pp. 181-189
    • Kristoffersen, A.1
  • 39
    • 79959223816 scopus 로고    scopus 로고
    • Toward an optimal distribution of b values for intravoxel incoherent motion imaging
    • Lemke A, Stieltjes B, Schad LR, Laun FB,. Toward an optimal distribution of b values for intravoxel incoherent motion imaging. Magn Reson Imaging 2011; 29: 766-776.
    • (2011) Magn Reson Imaging , vol.29 , pp. 766-776
    • Lemke, A.1    Stieltjes, B.2    Schad, L.R.3    Laun, F.B.4
  • 40
    • 0027158141 scopus 로고
    • On the use of Bayesian probability theory for analysis of exponential decay data: An example taken from intravoxel incoherent motion experiments
    • Neil JJ, Bretthorst GL,. On the use of Bayesian probability theory for analysis of exponential decay data: an example taken from intravoxel incoherent motion experiments. Magn Reson Med 1993; 29: 642-647.
    • (1993) Magn Reson Med , vol.29 , pp. 642-647
    • Neil, J.J.1    Bretthorst, G.L.2
  • 41
    • 84890789642 scopus 로고    scopus 로고
    • Improved intravoxel incoherent motion analysis of diffusion weighted imaging by data driven Bayesian modeling
    • Orton MR, Collins DJ, Koh DM, Leach MO,. Improved intravoxel incoherent motion analysis of diffusion weighted imaging by data driven Bayesian modeling. Magn Reson Med 2014; 71: 411-420.
    • (2014) Magn Reson Med , vol.71 , pp. 411-420
    • Orton, M.R.1    Collins, D.J.2    Koh, D.M.3    Leach, M.O.4
  • 44
    • 84919844948 scopus 로고    scopus 로고
    • The effect of low b-values on the intravoxel incoherent motion derived pseudodiffusion parameter in liver
    • Cohen AD, Schieke MC, Hohenwalter MD, Schmainda KM,. The effect of low b-values on the intravoxel incoherent motion derived pseudodiffusion parameter in liver. Magn Reson Med 2015; 73: 306-311.
    • (2015) Magn Reson Med , vol.73 , pp. 306-311
    • Cohen, A.D.1    Schieke, M.C.2    Hohenwalter, M.D.3    Schmainda, K.M.4
  • 47
    • 0035263539 scopus 로고    scopus 로고
    • Perfusion-related parameters in intravoxel incoherent motion MR imaging compared with CBV and CBF measured by dynamic susceptibility-contrast MR technique
    • Wirestam R, Borg M, Brockstedt S, Lindgren A, Holtas S, Stahlberg F,. Perfusion-related parameters in intravoxel incoherent motion MR imaging compared with CBV and CBF measured by dynamic susceptibility-contrast MR technique. Acta Radiol 2001; 42: 123-128.
    • (2001) Acta Radiol , vol.42 , pp. 123-128
    • Wirestam, R.1    Borg, M.2    Brockstedt, S.3    Lindgren, A.4    Holtas, S.5    Stahlberg, F.6
  • 48
    • 33748264591 scopus 로고    scopus 로고
    • Evaluation of hepatic lesions and hepatic parenchyma using diffusion-weighted echo-planar MR with three values of gradient b-factor
    • Moteki T, Horikoshi H,. Evaluation of hepatic lesions and hepatic parenchyma using diffusion-weighted echo-planar MR with three values of gradient b-factor. J Magn Reson Imaging 2006; 24: 637-645.
    • (2006) J Magn Reson Imaging , vol.24 , pp. 637-645
    • Moteki, T.1    Horikoshi, H.2
  • 49
    • 0042817820 scopus 로고    scopus 로고
    • In vivo study of microcirculation in canine myocardium using the IVIM method
    • Callot V, Bennett E, Decking UK, Balaban RS, Wen H,. In vivo study of microcirculation in canine myocardium using the IVIM method. Magn Reson Med 2003; 50: 531-540.
    • (2003) Magn Reson Med , vol.50 , pp. 531-540
    • Callot, V.1    Bennett, E.2    Decking, U.K.3    Balaban, R.S.4    Wen, H.5
  • 50
    • 0034435781 scopus 로고    scopus 로고
    • Imaging the microcirculatory proton fraction of muscle with diffusion-weighted echo-planar imaging
    • Yao L, Sinha U,. Imaging the microcirculatory proton fraction of muscle with diffusion-weighted echo-planar imaging. Acad Radiol 2000; 7: 27-32.
    • (2000) Acad Radiol , vol.7 , pp. 27-32
    • Yao, L.1    Sinha, U.2
  • 51
    • 0026584024 scopus 로고
    • On the precision of diffusion/perfusion imaging by gradient sensitization
    • Pekar J, Moonen CT, van Zijl PC,. On the precision of diffusion/perfusion imaging by gradient sensitization. Magn Reson Med 1992; 23: 122-129.
    • (1992) Magn Reson Med , vol.23 , pp. 122-129
    • Pekar, J.1    Moonen, C.T.2    Van Zijl, P.C.3
  • 52
    • 84876192030 scopus 로고    scopus 로고
    • Head and neck tumors: Assessment of perfusion-related parameters and diffusion coefficients based on the intravoxel incoherent motion model
    • Sumi M, Nakamura T,. Head and neck tumors: assessment of perfusion-related parameters and diffusion coefficients based on the intravoxel incoherent motion model. AJNR Am J Neuroradiol 2013; 34: 410-416.
    • (2013) AJNR Am J Neuroradiol , vol.34 , pp. 410-416
    • Sumi, M.1    Nakamura, T.2
  • 53
    • 67349287048 scopus 로고    scopus 로고
    • Diffusion-weighted imaging (DWI) in MR mammography (MRM): Clinical comparison of echo planar imaging (EPI) and half-Fourier single-shot turbo spin echo (HASTE) diffusion techniques
    • Baltzer PA, Renz DM, Herrmann KH, Dietzel M, Krumbein I, Gajda M, Camara O, Reichenbach JR, Kaiser WA,. Diffusion-weighted imaging (DWI) in MR mammography (MRM): clinical comparison of echo planar imaging (EPI) and half-Fourier single-shot turbo spin echo (HASTE) diffusion techniques. Eur Radiol 2009; 19: 1612-1620.
    • (2009) Eur Radiol , vol.19 , pp. 1612-1620
    • Baltzer, P.A.1    Renz, D.M.2    Herrmann, K.H.3    Dietzel, M.4    Krumbein, I.5    Gajda, M.6    Camara, O.7    Reichenbach, J.R.8    Kaiser, W.A.9
  • 54
    • 0036870149 scopus 로고    scopus 로고
    • Diffusion-weighted half-Fourier single-shot turbo spin echo imaging in breast tumors: Differentiation of invasive ductal carcinoma from fibroadenoma
    • Kinoshita T, Yashiro N, Ihara N, Funatu H, Fukuma E, Narita M,. Diffusion-weighted half-Fourier single-shot turbo spin echo imaging in breast tumors: differentiation of invasive ductal carcinoma from fibroadenoma. J Comput Assist Tomogr 2002; 26: 1042-1046.
    • (2002) J Comput Assist Tomogr , vol.26 , pp. 1042-1046
    • Kinoshita, T.1    Yashiro, N.2    Ihara, N.3    Funatu, H.4    Fukuma, E.5    Narita, M.6
  • 55
    • 85049331824 scopus 로고    scopus 로고
    • Determination of Signal-to-Noise Ratio (SNR) in diagnostic magnetic resonance imaging
    • Rosslyn, VA: National Electrical Manufacturers Association
    • National Electrical Manufacturers Association (NEMA). Determination of Signal-to-Noise Ratio (SNR) in diagnostic magnetic resonance imaging. Methods of measurement. Rosslyn, VA: National Electrical Manufacturers Association; 2008. p 17.
    • (2008) Methods of Measurement , pp. 17
    • National Electrical Manufacturers Association (NEMA)1
  • 57
    • 84865661488 scopus 로고    scopus 로고
    • Informed RESTORE: A method for robust estimation of diffusion tensor from low redundancy datasets in the presence of physiological noise artifacts
    • Chang LC, Walker L, Pierpaoli C,. Informed RESTORE: a method for robust estimation of diffusion tensor from low redundancy datasets in the presence of physiological noise artifacts. Magn Reson Med 2012; 68: 1654-1663.
    • (2012) Magn Reson Med , vol.68 , pp. 1654-1663
    • Chang, L.C.1    Walker, L.2    Pierpaoli, C.3


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.