Objective: The primary objective of this study is to assess the quality of life of people treated with oral phosphate compared with polyethylene glycol + electrolytes to imaging procedures, according to the outcome variables reported by patients.

Type of study: A non-interventional observational analytic prospective cohort study.

Sample: We will include people who need bowel cleansing for the realization of imaging tests

Exposures: - oral sodium phosphate normal regimen

• Oral sodium phosphate with modified diet
• Polyethylene Glycol + electrolytes

Follow-up time: 8 days after the bowel preparation

Outcomes: Boston Scale measure Safety Differences between groups in blood test (Sodium, Potassium, Calcium)

Inclusion Criteria:

• Patients which have order for an imaging procedure that requires bowel cleansing
• Older than 18 years and younger than 65 years old
• Accept to participate in this study

Adults who are in diagnostic centers, which have order for an imaging procedure that requires intestinal cleansing conducted.