The American College of Radiology (ACR) has highlighted the benefits of CT in response to an April 14 study suggesting that the scans are linked to new cases of cancer.
“The theoretical radiation risk proposed by Smith-Bindman, et al, is consistent with prior statistical modeling studies that are not based on actual patient outcomes… There are no published studies directly linking CT scans (even multiple CT scans) to cancer,” the ACR stated.
Medical imaging exams – including CT – are a primary factor in declining cancer death rates, and are directly linked to decreased hospital mortality rates and greater life expectancy, ACR said.
The organization urged patients to ask their physician or other medical provider the following questions:
- How will having this exam improve my healthcare?
- Are there alternatives that do not use radiation which are equally as good (e.g. MRI, ultrasound, etc.)?
- Is this facility ACR Accredited (which ensures high quality standards, including regular surveys of the equipment by medical physicists, certified technologists performing the exams, and interpretation by radiologist physicians who meet stringent education and training standards)?
Among its efforts to reduce inappropriate and unnecessary imaging and radiation exposure, the ACR noted it co-founded the Image Gently and Image Wisely initiatives.















![Axial images from unenhanced calcium score cardiac CT (left) and curved planar reformation images from CT angiography (right) show that higher long-term exposure to air pollution is associated with greater coronary artery calcium and more obstructive coronary artery disease (CAD). Top row: Images in a 68-year-old male patient with higher 10-year mean ambient air pollution exposure (7.9 μg/m3 for particulate matter measuring ≤2.5 μm in diameter [PM2.5] and 17.4 parts per billion [ppb] for NO2) with extensive CAD (coronary artery calcium score [CACS] >1,000 and obstructive CAD [≥70% diameter stenosis]). Bottom row: Images in a 57-year-old female patient with lower 10-year mean ambient air pollution exposure (6.3 μg/m3 for PM2.5 and 4.6 ppb for NO2) with no CAD (CACS = 0 and no obstructive stenosis).](https://img.auntminnie.com/mindful/smg/workspaces/default/uploads/2026/06/hanneman.r6SMLzkezo.png?auto=format%2Ccompress&fit=crop&h=112&q=70&w=112)




