Grossmont Imaging permanently closed its doors on December 1st, 2023.
- For medical records contact Sharp Grossmont Outpatient Imaging Center at (619) 740-5140.
- For future scheduling needs, please refer to https://www.grossmontimaging.com/ for additional details.

Inferior Petrosal Sinus Sampling

Inferior petrosal sinus sampling (IPSS) is used to aid in the diagnosis of Cushing’s disease. IPSS tests to see the source of the raised ACTH levels in a patient with Cushingoid features. Typically, a catheter is placed into each common femoral vein. Then, using fluoroscopic guidance, one catheter is navigated into the right inferior petrosal sinus, and the other into the left inferior petrosal sinus. The inferior petrosal sinuses drain the pituitary gland. Once the catheters are in the inferior petrosal sinuses, multiple blood samples are taken.

Hormones (ie. Corticotropin or Vasopressin analogues) are injected, and samples are taken to measure the pituitary’s response to the injected hormones. This tests the pituitary function, and can determine if the cause of Cushing’s disease is the pituitary gland. It can also identify the side of the pituitary gland that is most likely to be causing the Cushing’s disease.

Inferior Petrosal Sinus Sampling

 

ACR Mammography
ACR Stereotactic Breast Biopsy
ACR MRI
ACR Ultrasound
ACR American College of Radiology
ACR Breast MRI
ACR Breast Ultrasound
ACR CT

© X-Ray Medical Group - All Rights Reserved - Managed by Practis