Although Computed Tomography (CT) is considered a relatively safe procedure, there are several contraindications that may make the examination impossible or affect its accuracy.

Absolute Contraindications:

• Pregnancy (especially during the first trimester) — CT may be performed only in critical situations when the life of the mother or child is at risk and urgent imaging is necessary.
• Body weight over 120 kg — this limitation applies to standard CT scanners.
• Inability to remain still for the duration of the examination — in some patients, this may make the procedure technically impossible.

Contraindications for Contrast-Enhanced CT:

• Allergy to iodine-containing medications or a history of severe multiple or cross-allergic reactions.
• Previous adverse reactions to iodinated contrast agents during earlier imaging studies.

Situations Requiring Physician Consultation:

• Patients with elevated blood creatinine levels should undergo medical evaluation before contrast administration.
• If there is a history of serious thyroid disorders accompanied by thyrotoxicosis, temporary restrictions on iodine-containing contrast may be necessary.
• Patients with type 2 diabetes mellitus, especially those taking glucose-lowering medications, may require temporary adjustment of treatment before and after the examination.

The decision to perform a CT scan in these situations is always made individually by the physician after assessing all potential risks and benefits.