Inclusion Criteria:

- Patient is >18 years and male or female of any race / ethnicity

- Patient or patient's legally acceptable representative provides written informed
consent and willing to comply with protocol requirements

- Patient must be scheduled to receive chemotherapy treatment(s) plus Avastin® for
their cancer care; treatment management will be made by the treating medical
oncologists (According to the package insert for Avastin®, it is administered as an
IV infusion every 3 weeks for nonsquamous non-small cell lung cancer, and every 2
weeks for metastatic breast cancer, colon or rectum cancer)

- Patient will be scheduled to have a clinical [F-18]FDG-PET/CT or diagnostic CT
pre-treatment after the fourth but before the fifth Avastin® treatment

Exclusion Criteria:

- Patient is not capable of complying with study procedures

- Female patient is pregnant or nursing; exclude the possibility of pregnancy by one of
the following:

- Confirming in medical history that the patient is postmenopausal for a minimum
of one year, or surgically sterile

- Confirming the patient is using one of the following methods of birth control
for a minimum of one month prior to entry into this study: IUD, oral
contraceptives, Depo-Provera, or Norplant

- Confirming a negative urine dipstick test taken the morning of receiving the
[F-18]RGD-K5

- Patient has a severe hepatic or renal disease as defined by previous medical history
or abnormal renal and hepatic functions determined by lab results not within the
following ranges, or in the opinion of the Investigator, the values are not
acceptable for the patient to be included:

- AST (SGOT)/ALT (SGPT) ≤ 2.5 x institutional upper limits of normal

- Serum creatinine ≤ 2x institutional upper limits of normal

- BUN within 2x institutional upper limits of normal

- Patient has known hyper or hypo-coagulation syndromes. (e.g. Protein C, S
deficiency, Hemophilia A/B/C, Factor-V Leiden, etc) or lab results are not
within the following ranges, or in the opinion of the Investigator, the values
are not acceptable for the patient to be included: Platelet counts of < 75 x
103/μL

- Patient has known sensitivity to any components of Avastin® such as recombinant human
or humanized antibodies

- Patient has been involved in an investigative, radioactive research procedure within
7 days and during the study participation period

- Patient will participate in experimental therapy procedures while participating in
this clinical trial

- Patient has any other condition or personal circumstance that, in the judgment of the
investigator, might interfere with the collection of complete data or data quality to
achieve study objectives, or complete study and/or post-dose follow-up examinations