Researchers at Harvard University have demonstrated consistency in CT imaging studies using a computer-based protocol system that is based on clinical indications, rather than the anatomy that is imaged. "Using a computerized or Web-based protocol
Researchers at Harvard University have demonstrated consistency in CT imaging studies using a computer-based protocol system that is based on clinical indications, rather than the anatomy that is imaged.
"Using a computerized or Web-based protocol guidance system organized by clinical indication, a consistent method for protocol selection can be achieved," said Kevin Reynolds, a radiologic technologist at Harvard.
The system has many advantages, according to Reynolds:
?more efficient study protocoling
?consistent comparison studies for oncologic evaluation and response to therapy
?ease of training new staff members and residents
?fewere rescans due to incorrect scan parameters
During a 12-month trial period, all requested inpatient and outpatient body CT scans were assigned to nonspecific appointment slots. Using the RIS, radiologists or body imaging fellows electronically protocoled each exam based on a list of 110 clinical indications, Reynolds said.
Each clinical indication was linked to a specific exam protocol. Thus, each selected protocol determined the scan parameters, including slice thickness, collimation and interval, the need for intravenous contrast, whether the contrast should be ionic or low osmolar, the injection rate, scan delays, and the need for oral prep or rectal contrast material, he said.
A total of 215 body CT scans (136 torso, 62 abdominal, and 17 chest) were retrospectively reviewed by two researchers based on the clinical indications to determine consistency of scan protocols chosen by the radiologists. Results of the trial showed that, of the 215 CT studies performed, 205 (95%) were appropriately protocoled in accordance with the stated clinical indications, Reynolds said.
Of the 10 (5%) remaining patients, six were overprotocoled, and four were assigned a less than optimal protocol, he said. Of 75 follow-up scans for the same clinical indication, only six (8%) led to a different scan protocol, he said.
Stay at the forefront of radiology with the Diagnostic Imaging newsletter, delivering the latest news, clinical insights, and imaging advancements for today’s radiologists.
The Reading Room Podcast: A Closer Look at Remote MRI Safety, Part 2
July 25th 2025In the second of a multi-part podcast episode, Emanuel Kanal, M.D. and Tobias Gilk, MRSO, MRSE, share their perspectives on remote MRI safety protocols for ensuring screening accuracy and adherence to conditional implant guidelines as well as a rapid and effective response to adverse events.
Twenty Years of CT Colonography for Colorectal Cancer Screening: What the Research Reveals
July 29th 2025Computed tomography colonography (CTC) demonstrated a 91.6 percent positive predictive value (PPV) for polyps > 6 mm, according to new research involving over 9,000 patients who underwent CTC for primary asymptomatic colorectal cancer screening.
The Reading Room Podcast: Current and Emerging Insights on Abbreviated Breast MRI, Part 2
July 23rd 2025In the second part of a multi-part podcast episode, Stamatia Destounis, MD, Emily Conant, MD and Habib Rahbar, MD, discuss key sequences for abbreviated breast MRI and how it stacks up to other breast cancer screening modalities.