Consider the breast and lungs when determining thoracic imaging protocols

Carefully consider the radiation dose to the breast and lungs before deciding which CT protocol to use for thoracic imaging of individual patients, a new study cautions.

The study compared organ doses to the breast, lungs and using commonly used protocols and found a change in protocol could decrease breast radiation dose by more than 50 percent. "The highest doses to the breast skin and parenchyma were found with our standard thoracic CT protocol (120 kVp, variable 120-320 mA) and the protocol we use to assess for in the general population (120kVp, variable 200-394 mA)," said Dr. Diana Litmanovich of Harvard Medical School in Boston, and the lead author of the study.

"We found the dose was reduced by more than half when we used our protocol for assessing pulmonary embolism in pregnant or young patients," (100 kVP, fixed 200 mA), said Dr. Litmanovich.

The standard thoracic CT and the pulmonary embolism protocols also led to the highest radiation doses to the , Dr. Litmanovich said. The lung received the highest organ dose regardless of the protocol, while pelvic radiation was low regardless of the protocol, she said.

"Despite efforts to reduce , irradiation of the breast and lung remain substantial," said Dr. Litmanovich. "The study emphasizes the need for caution when we are planning our CT protocols," she said.

The study is published in the October, 2011 .

Provided by American Roentgen Ray Society

5 /5 (2 votes)
add to favorites email to friend print save as pdf

Related Stories

Recommended for you

New technology that is revealing the science of chewing

17 hours ago

CSIRO's 3D mastication modelling, demonstrated for the first time in Melbourne today, is starting to provide researchers with new understanding of how to reduce salt, sugar and fat in food products, as well ...

After skin cancer, removable model replaces real ear

Apr 11, 2014

(HealthDay)—During his 10-year struggle with basal cell carcinoma, Henry Fiorentini emerged minus his right ear, and minus the hearing that goes with it. The good news: Today, the 56-year-old IT programmer ...

Italy scraps ban on donor-assisted reproduction

Apr 09, 2014

Italy's Constitutional Court on Wednesday struck down a Catholic Church-backed ban against assisted reproduction with sperm or egg donors that has forced thousands of sterile couples to seek help abroad.

Pot growers association launched in Jamaica

Apr 06, 2014

A group of influential Jamaicans gathered Saturday to launch an association of supposed future marijuana cultivators as momentum builds toward loosening laws prohibiting pot on the Caribbean island.

User comments