Table 1. Overview of a specifications of a digital colposcope systems.
| System | Price (US$) | Weight (lbs) | Clinical Sites | Light Source | Detector Type | Resolution (MP) | Pixel Pitch (μm) | Sensor Size | Aspect Ratio | Focus |
|---|---|---|---|---|---|---|---|---|---|---|
| Leisegang Optik 2 | 20,000 | 175 | DUMC | 18W LED, LP Green Filter | CMOS | 18 (5184x3456) | 4.3 | APS-C | 3:2 | Manual |
| Wallach Tristar | 6,500 | 75 | KCMC* | 150W Halogen, LP Green Filter | Not Applicable | |||||
| Canon SX50HS | 399 | 1.3 | KCMC* | Uses Wallach Tristar source | CMOS | 12.1 (4000x3000) | 1.5 | 1/2.3” | 4:3 | Auto |
| Apple iPhone 5S | 800 | 0.25 | CACHA | White LED Flash | CMOS | 8.0 (3264x2448) | 1.5 | 1/3.0” | 4:3 | Auto |
| 2.0MP POCkeT Colposcope | 300 | 0.75 | DUMC | 1W White LEDs | CMOS | 2.0 (1600x1200) | 2.2 | 1/4" | 4:3 | Manual |
| 5.0MP POCkeT Colposcope | 300 | 1.0 | DUMC | 2W White and Green LEDs | CMOS | 5.0 (2592x1944) | 1.4 | 1/4" | 4:3 | Auto |
High-end digital colposcope (Leisegang Optik 2), a traditional colposcopes (Wallach Tristar), and digital cervicography devices (Canon SX50HS and Apple iPhone 5S) with respect to cost, weight, clinical sites, and light source strategies when compared to the novel 2.0MP (megapixel) and 5.0MP POCkeT Colposcope Clinical sites include: Duke University Medical Center (DUMC) in Durham, NC; Kilimanjaro Christine Medical Center (KCMC) in Moshi, Tanzania; and Canada Africa Community Health Alliance (CACHA) in Moshi, Tanzania.
* For digital cervicography at KCMC, the Canon SX50HS digital camera uses the halogen light source of an analog colposcope. APS-C stands for Advanced Photo System type-C imager format.