CT angiography sensitivity ranged from 75.5–87.3%, while specificity held near 90% across scales. Sensitivity refers to how well a test finds its target, in this case, brain death.

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 ...

For example, low-dose chest CT scans performed for lung cancer screening use lower doses than multi-phase abdominal/pelvic CT scans that are required to stage a person with pancreatic cancer.

Subarachnoid Hemorrhage - Anterior Cerebral Artery Aneurysm. (Left) Axial CT scan without contrast; (Right) Left internal carotid artery angiogram, Lateral oblique view. On the CT scan, note the ...

A CT scan of the head is ordered (Figure). Credit: Brady Pregerson, MD Making the Diagnosis The main concern after head trauma is an intracranial bleed.

Dizziness is a common cause of emergency room (ER) visits.1 The yield of various diagnostic tests in patients with dizziness has been evaluated in outpatient or ambulatory care settings but no data ...

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 ...

A CT scan, by its very design, uses much more X-rays than a simple radiograph 'cause the X-rays basically are emitted going around the patient in a full circle in a machine that looks like a doughnut.

AYESHA RASCOE, HOST: X-rays and CT scans have revolutionized medicine. Doctors can look inside the body and diagnose diseases even before people feel ill. But medical imaging that uses radiation comes ...

New research projects that the tens of millions of CT scans performed in the US in 2023 could result in over 100,000 cases of cancer.

A CT scan, by its very design, uses much more X-rays than a simple radiograph 'cause the X-rays basically are emitted going around the patient in a full circle in a machine that looks like a doughnut.

A new study suggests the cancer risk from radiation emitted by the CT machine during a scan could be higher than previously thought — up to 103,000 cases from the 93 million scans performed in 2023.