{"classes":[{"categories":[{"measurements":[{"groupId":"OG000","value":"19"}]}]}],"denoms":[{"counts":[{"groupId":"OG000","value":"80"}],"units":"Participants"}],"description":"Number of tissues that were excised by surgeon assumed to be parathyroid tissue, but is later validated as non-parathyroid tissue (false positive) by histology","groups":[{"description":"Parathyroid gland identification will be performed with PTeye using NIRAF detection technology as an adjunctive tool in patients who undergo parathyroidectomy (PTx).\n\nNIRAF Detection Technology: Near Infrared Autofluorescence (NIRAF) detection technology or 'PTeye' consists of a disposable fiber-optic probe that emits non-ionizing radiation from a NIR 785 nm laser source, and also transmits the resulting tissue NIRAF to a photo detector. The 785 nm laser source emits a maximum power of 20 mW. The device is FDA cleared for clinical use in general surgeries and dermatological use (Class 2 device).\n\nAfter surgeon identifies a potential parathyroid gland in the surgical field, the surgeon places the fiber-optic probe of PTeye on suspect tissue and presses the device foot-pedal to activate tissue NIRAF measurement. Auditory beep at high frequency with a Detection Ratio \\> 1.2 is interpreted by device as the suspect tissue being positive for parathyroid.","id":"OG000","title":"NIRAF Detection Technology +"}],"paramType":"NUMBER","populationDescription":"Only the NIRAF Detection Technology + arm was included in the analysis to calculate the rate of false positives by the device. Since the NIRAF Detection Technology - did not use the device that arm was not included.","reportingStatus":"POSTED","timeFrame":"Immediate to 10 days after PTx procedure.","title":"Number of 'False Positive' Tissues Excised by Surgeon","type":"SECONDARY","unitOfMeasure":"false positives"}