4 Clinical Trials for Various Conditions
Precancerous lesions of the cervix occur frequently and are treatable. This justifies a population-based screening program. Following an abnormal Pap smear, patients are referred for a colposcopic exam to confirm the presence/stage of disease and select appropriate treatments. Unfortunately, these approaches do not detect all lesions or can sometimes give 'false positive' results (resulting in overtreatment). We are testing a device called a 'multispectral digital colposcope' to determine whether it is more effective at detecting precancerous cervical lesions than existing tools. Success in our study will make diagnoses more accurate and reduce the costs associated with unnecessary treatments.
The overall objective of this study is to identify potential improvements for a noninvasive method of diagnosing dysplasia and neoplasia in the cervix using digital colposcopy for colposcopy for fluorescence spectroscopy. Other Objectives: * To measure digital fluorescence and reflectance images in vivo of sites in the human cervix. * To evaluate the effect of acetic acid in the image contrast obtained. * Compare the device performance to colposcopy and pathologic analysis of tissue removed at colposcopy.
A handheld digital colposcope which utilizes flurorescent light is being tested for the rapid detection and management of cervical lesions. The handheld research device captures cervical images which with the fluorescent light show the regions of cervical tissue that autofluoresce. The investigators will study the relationship between the level of fluorescence and the samples of tissue (biopsies) obtained from the patient as part of her routine care. The investigators will also compare the efficacy of the hand held device with the data being collected from the other research devices being tested by the team, i.e. the multispectral digital colposcopes.
The overall objective of this study is to evaluate whether polarized or green filtered digital imaging can assist clinicians to screen for premalignant lesions in the cervix. The specific aims of the study are: * To compare polarized and green filtered digital images of the cervix, to standard white light images, colposcopic evaluation and to pathologic analysis of biopsied tissue. * To develop algorithms to discriminate between normal and abnormal tissue based on digital images of the cervix. * To analyze digital images to determine which types of optical information yield the most diagnostically useful data.