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NOTE: Each study in the database contains 10 repeat scans for that particular acquisition protocol, multiplied by the number of reconstructions. The study and series descriptions contain the following information:

Study description: Contains information on: the scanner vendor (currently Philips or Siemens), the exposure (in mAs), the pitch (currently either 1.2 or 0.9 according to the definition , where ?d is the patient table travel in the horizontal direction and T is the detector width at the isocenter plane), and slice collimation (in mm).

Series description: Contains information on reconstructed slice thickness (in mm), reconstructed slice increment (in mm), and reconstruction filter or kernel (currently either C for detail, or B for medium).
For example: there are 16 studies for Nodule Layout #1 (4 exposures x 2 slice collimations x 2 pitch settings). Each study contains 30 series (10 repeat scans x 3 reconstructed slice thickness x 1 reconstruction kernel).

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