Contrast-enhanced Ultrasound for Follow-up After Radiofrequency Ablation of Kidney Lesions

St. Joseph's Healthcare Hamilton

Status

Unknown

Conditions

Carcinoma, Renal Cell

Treatments

Other: Contrast-Enhanced Ultrasound

Study type

Interventional

Funder types

Other

Identifiers

NCT01141816

MIURCCCEUS

Details and patient eligibility

About

Radiofrequency ablation (RFA) is an increasingly popular therapy option for treating small kidney cancer, especially for patients who are not ideal candidates for traditional surgery. Currently, follow-up after this procedure involves the patient having several CT scans (or MRI scans in some cases) over time to monitor for possible cancer recurrence. However, there are risks associated with the radiation exposure from CT scans and other risks, such as adverse events from the contrast media used in these scans. This study will therefore investigate whether a different technique, contrast-enhanced ultrasound (CEUS), can be an effective tool for follow-up monitoring of kidney cancer patients who have undergone RFA by comparing the results of their standard follow-up CT scans (or MRIs if applicable) with the results of CEUS. If CEUS is found to be just as effective as CT scans or MRIs in detecting kidney cancer recurrence, this technique could potentially become the new standard of care for follow-up.

Enrollment

30 patients

Sex

All

Ages

18+ years old

Volunteers

No Healthy Volunteers

Inclusion criteria

at least 18 years of age and capable of giving informed consent
patient undergoing CT of MRI for monitoring of renal lesions after radiofrequency ablation

Exclusion criteria

pregnant patients
patients with allergies to iodinated contrast agents
patients with pulmonary hypertension, right-to-left cardiac shunts, or unstable cardiopulmonary disease (these are absolute or relative contraindications to the use of the ultrasound contrast agent, perflutren lipid microsphere)