Figure 2 A: Non-contrast-enhanced CT scan of the head showing a large CSF-density lesion measuring approximately 9 cm × 5 cm, together with expansion, thinning, and marked scalloping of the occipital ...

Arachnoid cysts occur in one of the three layers of tissue that surround the brain and spinal cord. Most arachnoid cysts are stable and do not require treatment. They are four times more common in ...

Medical imaging scans that create detailed images of the body’s internal structures are widely used in medicine. Doctors need them to detect and manage certain types of cancer, assess the extent of ...

CT scan and metrizamide CT cisternography in arachnoid cysts of the middle cranial fossa: classification and pathophysiological aspects. Surg Neurol 1982;17:363–9.

Adults, however, may face a greater risk since most scans are performed on them. The most common cancers linked to CT scan exposure include lung, colon, bladder cancer, and leukemia.

May 8, 2025 – If you’ve ever hesitated before getting a CT scan, you’re not alone. A recent study linked 5% of all new cancer cases to radiation exposure from CT scans – a finding that’s ...

The study itself is basically a modeling exercise. The authors took an estimate of the number of CT scans done every year in the U.S., based on research from 2023. Next, they estimated the dose of ...

Based on the number and types of scans people underwent in 2023, the researchers estimated that around 103,000 U.S. cancer diagnoses per year could soon be attributed to CT scan radiation exposure.

Arachnoid Cyst of the Posterior Cranial Fossa: (Left) T1-weighted axial MRI; (Right) T2-weighted axial image. Note the large cystic lesion in the posterior fossa. As the cyst contains fluid, it is ...

In 2023 alone, Americans underwent 93 million CT scans, a figure that researchers say could result in nearly 103,000 new cancer cases – three to four times higher than previous estimates.

risks CT scans could cause 5% of cancers, study finds; experts note uncertainty The estimates are small and uncertain, but balancing risks and benefits is critical.

Your doctor will do a CT scan or a brain MRI to diagnose an arachnoid cyst. These tests also show the cyst's location and size, which will help your doctor figure out how to treat it.