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. 2024 Mar 12;15(4):2308–2327. doi: 10.1364/BOE.518967

Table 1. Geometric, Mechanical, and Hemodynamic Properties of the Human Finger.

Article Anatomical Location Property Measurement Instrumentation
Klarhöfer, et al [30] Finger - index Hemodynamic Arterial blood flow velocity:4.9–19 [cm/sec]; Vessel diameter:0.8-1.8 [mm]; Arterial blood flow rate:3.0–26 [ml/min] 3 Tesla MR scanner
Welsh, et al [31] Human hand Hemodynamic Finger systolic blood pressure (FSBPs):59-192 mmHg Strain-gauge plethysmography
Blackstone, et al [27] Finger - Index Geometric Length: 70-80 [mm]; Width: 18-20 [mm]; Mass: 21-30 [g] (18-year-olds) NA: Systematic review: source, CHILDATA [32]
Buryanov, et al [28] Finger - Soft tissues of the distal phalanges Geometric Fingertip I-V length: (Distance from tip of bone to skin surface) range of 3.-6.3 [mm] X-ray images
Laurent, et al [33] Radial artery (Medium size) at the wrist Geometric and Mechanical Arterial internal diameter: 2.50-2.53 [mm]; Intima-media thickness: 0.06-0.40 [mm]: Arterial wall cross section: 2.5-3.8 [mm2] Ultrasonic, echo-tracking system coupled to photoplethysmograph (Finapres system)
Tardy, et al [34] Digital arteries Mechanical Diameter as a function of pressure: ∼1.31 mm at 7 [kPa] (∼52 mmHg) to 1.325 at 15 [kPa] (∼ 112 mmHg) Ultrasound and PPG
Bochmann, et al [35] Digital arteries Mechanical Compliance: 2.76 - 4.03 mL /mmHg per 100 ml tissue Impedance plethysmography and a finger BP measuring device
Langewouters, et al [36] Human finger arteries and rat tail Mechanical Pressure-diameter relationships: 1-1.5 [mm] in 0-120 [ mmHg] (measured at vessel midpoint) Photoelectric device [37]
Nakayama, et al [38] Finger Mechanical Digital arterial pressure and compliance: 80.6 +/- 1.2 [mmHg], 11.37 +/- 5.9 × 10-6 [cm3/mmHg] Fingertip pneumoplethysmograph and a pneumatic cuff
Falanga, et al [29] Finger - Index and middle Mechanical Hardness: Index pad 32 ± 3; Middle finger center pad 39 ± 1 Commercial Shore OO durometer
Yazdi, et al [39] Carotid and coronary (3.5-9 mm) Mechanical Young’s Modulus: 11.0-17.9, 6-32 [MPa] NA: Review paper
Oprişan, et al [40] Finger Mechanical Young’s’ Modulus: 0.07-0.20 [MPa] Steel cylinder normal loaded from 0 to 10 N