Summary
| Excerpt | ||||||
|---|---|---|---|---|---|---|
This collection contains data from theEasternthe Eastern Cooperative Oncology Group (ECOG -ACRIN Cancer Research Group) Clinical Trial NCT02933489, “ Comparison ofAbbreviated Breast MRI and Digital BreastTomosynthesis Mammography in Breast CancerScreening inWomen With Dense Breasts" , Principal. Principle Investigator: Christopher Comstock , MD. It was sponsored by NCI and performed by the ECOG-ACRIN Cancer Research GroupEastern Cooperative Oncology Group under study number EA1141. This randomized phase II trial studiesenrolled 1,516 subjects to study how well abbreviated breast magnetic resonance imaging (MRI) and digital tomosynthesis mammography work in detecting cancer in women with dense breasts. Abbreviated breast MRI is a low cost procedure in which radio waves and a powerful magnet linked to a computer and used to create detailed pictures of the breast in less than 10 minutes. These pictures can show the difference between normal and diseased tissue. Digital tomosynthesis mammography is a procedure that uses multiple x-rays pictures of each breast to produce a 3-dimensional rendering of the entire breast. Combined screening with abbreviated breast MRI and digital tomosynthesis mammography may be a better method to screen women with dense breasts. Select patient-level clinical data from this trial is available via the following link: (not sure).Imaging and clinical data from 500 of those subjects are being made available through this collection. Trial OutcomesResults of the trial have been reported in the following publication:
|
| Localtab Group | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
De-identification of DICOM datesDe-identification of dates for this dataset was done prior to receipt and curation by TCIA in a method similar to the TCIA process. TCIA uses the DICOM Part 3.15 Annex E standard “Retain Longitudinal With Modified Dates Option” which allows dates to be retained as long as they are modified from the original date. TCIA implements this using a technique which de-identifies the dates while preserving the longitudinal relationship between them. Original dates were first normalized to 01 January, 1945 and then offset relative to the date of registration for each patient. This normalized date system was chosen in order to make it obvious that the dates are not real, and to make it easy to quickly determine how much time has passed between the date of registration and the patients' related imaging studies. For example, if the real date of a patient's registration was 03/27/2018 and the original imaging Study Date was 03/29/2018 then the "Days from registration" would be +2 and the anonymized TCIA Study Date would become 01/03/1945. Insertion of computed "REGISTRATION"/Days offset from registration" valueIn addition to modifying the actual date fields in the DICOM header, the "days from registration" values are calculated and stored in the DICOM tag (0012,0052) Longitudinal Temporal Offset from Event with the associated tag (0012,0053) Longitudinal Temporal Event Type set to “REGISTRATION”. Note: If these DICOM tags are not present, DICOM tag (0012,0050) Clinical Trial Time Point ID with the associated tag (0012,0051) Clinical Trial Time Point Description provides this same information. This inconsistency is due to a change in how dates were handled in the first NCTN trials that were published on TCIA. National Clinical Trials Network (NCTN) Date Handling
|