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Department of Radiology

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Thoracic Imaging




The mission of the Thoracic Radiology Division is to provide the highest quality thoracic and cardiac imaging services, which include plain film, CT and MRI.  The division focuses on oncologic, transplant, interstitial lung disease and trauma imaging that reflects the focus of the University of Colorado Hospital. A full range of cardiovascular imaging is also available in cooperation with the Cardiac Imaging division.


Patient Care

The section consists of four, fellowship trained radiologists.

Peter Sachs, M.D. (Section Chief) - Vascular and Interventional Radiology

Daniel Vargas, M.D. - Cardiothoracic Imaging

Nicole Restauri, M.D. - Body Imaging

Thomas Suby-Long, M.D. - Body Imaging

Kathryn Olsen, M.D. will join the section in March 2015 specializing in Cardiothoracic Imaging

The full range of thoracic and cardiovascular imaging is available, including all forms of chest CT, CT angiography utilizing the latest acquisition and post-processing techniques, and MRI/MRA. The Section leads the newly launched Lung Cancer Screening Program in concert with the Multi-disciplinary Lung Cancer Screening Clinic. Consultative services are provided, along with active participation in multidisciplinary conferences (e.g. Thoracic Tumor Board and Multi-disciplinary Lung Cancer Conference).



The section participates actively in the Thoracic Core lecture series for all radiology residents. In addition, the section now provides frequent case conferences (1-2/month) for all residents as well as daily focused case and topical conferences tailored to the needs/interests of the resident(s) rotating on service each month. There is an intensive rotation for 3rd and 4th year medical students under the direction of Dr. James Davidson. All members participate in additional 3rd and 4th year offerings focused on providing medical students with basic radiologic skills necessary to function as clinical trainees.  A joint fellowship in Cardiothoracic Imaging with National Jewish Health is also available to two individuals per year to provide advanced training in thoracic and cardiac imaging as well as opportunities to participate in ongoing research projects.


Scholarly Activity

Dr. Peter Sachs also serves as Vice Chair of Informatics for the Department and Radiology Physician Informaticist for UCHealth. He writes and lectures nationally on topics related to optimization of radiology workflow in the EMR. He is also currently collaborating with Drs. Kevin Deane and Kristen Demourelle (Rheumatology) in a study investigating the early pulmonary manifestations of Rheumatoid Arthritis.

Dr. Thomas Suby-Long’s work is focused on quality and process improvement and includes optimizing appropriate ordering of CT scans for pulmonary embolism, improving communication between our team and our clinical colleagues and improving detection of retained surgical devices.

Dr. Nicole Restauri has recently received a large institutional grant to build a medical student learning lab providing comprehensive, cutting edge education in radiology to medical students. She has completed the President’s Teaching Scholars program.

Dr. Daniel Vargas’ work is focused in the cardiac imaging realm and includes recent manuscripts on genetic syndromes with associated cardiovascular anomalies and fatty lesions in and around the heart. He is also engaged in a multidisciplinary investigation of non-tuber​culous mycobacterial infections.



For a complete list of faculty, please refer to our Staff Directory​.