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Table 1 Comparing CDL measurements made by multiple studies

From: Measuring Cochlear Duct Length – a historical analysis of methods and results

Authors Year Location of CDL Modality Method # of Samples Mean (SD) Range of Values
Retzius 1884 OC Histology Direct 5 33.5 (0.8) 32 – 34
Hardy 1938 OC Histology Indirect 68 31.52 (2.3) 25.26 – 35.45
Bredberg 1968 OC Histology Direct 35 34.0 (1.3) 30.3 – 37.6
Walby 1985 OC Histology Indirect 20 32.6 (2.1) 30.1 – 36.4
Ulehlova et al. 1987 OC Histology Direct 50 34.2 (2.9) 28.0 – 40.1
Pollak et al. 1987 OC Histology Indirect 9 28.4 (3.4) 24.0 – 33.5
Wright et al. 1987 OC Histology Direct 14 32.9 (2.6) 28.8 – 36.6
Takagi & Sando 1989 OC Histology 3D reconstruction 1 36.4 (n/a) -
Sato et al. 1991 OC Histology 3D reconstruction 18 34.73 (2.9) 29.7 – 38.9
Kawano et al. 1996 OC Histology 3D reconstruction 8 35.58 (1.4) 34.2 – 37.9
LW Histology 3D reconstruction 8 40.81 (2.0) 37.93 – 43.81
Ketten et al. 1998 OCa In vivo CT Spiral coefficients 20 33.01 (2.3) 29.07 – 37.45
Skinner et al. 2002 OCa In vivo CT Spiral coefficients 26 34.62 (1.2) 32.94 – 36.57
Sridhar et al. 2006 OC Histology Direct 7 33.31 (2.4) 30.5 – 36.87
Stakhovskaya et al. 2007 OC Histology Direct 9 33.13 (2.1) 30.5 – 36.87
Erixon et al. 2009 LW Plastic casts Indirect 58 42.0 (2.0) 38.6 – 45.6
Lee et al. 2010 OC Histology Indirect 27 30.8 (2.6) 25.5 – 35.1
Erixon & Rask-Anderson 2013 LW Plastic casts Indirect 51 41.2 (1.9) 37.6 – 44.9
Wurfel et al. 2014 LW In vivo CBCT 3D reconstruction 436 37.9 (2.0) 30.8 – 43.2
Meng et al. 2016 LW In vivo CT 3D reconstruction 310 35.8 (2.0) 30.7 – 42.2
  1. aMeasured LW and interpolated into the OC location