Alexander Weller MBBS,FRCR, Abstract Co-Author: Nothing to Disclose

Seyed Mohammad Mehdi Ameli Renani MBBS, Presenter: Nothing to Disclose

Arjun Nair MBBCh, FRCR, Abstract Co-Author: Nothing to Disclose

Anand Devaraj MBBS, Abstract Co-Author: Nothing to Disclose

Sisa Grubnic MD, Abstract Co-Author: Nothing to Disclose

Ioannis Vlahos MRCP, FRCR, Abstract Co-Author: Consultant, Siemens AG Consultant, General Electric Company

To illustrate the potential value of dual energy CT (DECT) material specific algorithms for the characterisation and staging of patients with lung cancer.

• Brief DECT overview: acquisition techniques and material specific imaging • Benefits of paired low-high kVp imaging: contrast opacification and volume/rate optimisation • Clinical examples, explanation of established material specific images, benefits and limitations: Evaluating lesion and volume of enhancement Defining extent of tumour in atelectatic lung for radiotherapy planning Evaluating chest wall invasion, determination of viability to plan biopsy Material specific imaging to differentiate enhancement and calcification of lesions Iodine enhancement - determining nodal involvement Virtual non-contrast imaging: evaluation of incidental postcontast adrenal lesions Nodule enhancement studies – Variable kVp problematic, differentiating hamartoma • Emerging applications: e.g. Combined lung segmentation and volumetric pulmonary blood volume imaging –alternative to quantitative preop V/Q imaging? DECT-PET/CT correlation

This exhibit depicts the current potential benefits and limitations of dual energy imaging for lung cancer imaging, including dose reduction strategies and highlights some emerging potential utilities.

Weller, A, Ameli Renani, S, Nair, A, Devaraj, A, Grubnic, S, Vlahos, I, Dual Energy Imaging for Lung Cancer.  Radiological Society of North America 2012 Scientific Assembly and Annual Meeting, November 25 - November 30, 2012 ,Chicago IL. http://archive.rsna.org/2012/12031290.html