[Virtual colonoscopy and PET/CT for diagnosis and staging of colorectal cancer]. / Colonscopia virtuale e PET/TC per la diagnosi e stadiazione del cancro del colon-retto.

Colo-rectal cancer is the most common malignancy of the gastrointestinal tract and is the third frequency for malignancy in humans. CT and MRI development allows an early diagnosis and a modulation of the therapeutic approach. Many papers seem to confirm the role of PET/CT and virtual colonography in the evaluation of primary lesions. The PET/CT appears mode accurate in assessing lymph node metastases. Today, new approaches such as virtual colonoscopy and PET/CT open new horizons in the diagnosis and staging of cancer of the colon and rectum.

[Choice of the imaging technique for the diagnosis of bone metastases]. / Scelta della tecnica di imaging nello studio delle metastasi ossee.

Bone is the third common site of distant metastases in cancer patients. Bone metastases may have implications for prognosis, quality of life, and local and systemic therapy. Numerous imaging modalities may be used to detect bone metastases. The two main anatomical modalities are computed tomography (CT) and magnetic resonance imaging (MRI), with many variants proposed for the MRI procedure, including diffusion-weighted imaging. The two main functional modalities are scintigraphy and PET/CT, also with many variants in the radiopharmaceuticals. Aim of our paper is to review the most important radio-compounds that can be successfully used to detect and/or characterize bone metastases.