Noah E Atwi1, Carl F Sabottke2, David M Pitre2, David L Smith1, Raman Danrad3, Ekta Dharaiya4, Avinash Kambadakone5, Pari V Pandharipande6, Aran M Toshav7. 1. Department of Radiology, LSU Health Sciences Center New Orleans, New Orleans, Louisiana. 2. School of Medicine, LSU Health Sciences Center New Orleans, New Orleans, Louisiana. 3. Clinical Director of MRI, Academic Director of Cardiac Imaging, Department of Radiology, LSU Health Sciences Center New Orleans, New Orleans, Louisiana. 4. Head of CT Clinical Marketing, Philips Healthcare, Cleveland, Ohio. 5. Medical Director, Martha's Vineyard Hospital Imaging, Chief of CT, Massachusetts General Hospital, Boston, Massachusetts. 6. Director, MGH Institute for Technology Assessment; Associate Chair, Integrated Imaging & Imaging Sciences, MGH Radiology; Executive Director, Clinical Enterprise Integration, Mass General Brigham (MGB) Radiology; Associate Professor of Radiology Harvard Medical School; Radiologist, Abdominal Imaging, Massachusetts General Hospital, Boston, Massachusetts. 7. Program Director of the diagnostic residency, Department of Radiology, LSU Health Sciences Center, New Orleans, Louisiana. Electronic address: atosha@lsuhsc.edu.
Abstract
BACKGROUND: Dual-energy CT image sets have many applications in abdominopelvic imaging but no demonstrated clinical effect. PURPOSE: To determine the effect of dual-energy CT iodine maps on abdominopelvic imaging follow-up recommendation rates. MATERIALS AND METHODS: Retrospective study of abdominopelvic CTs acquired from April 2017 through June 2018. CT reports were analyzed for radiologic follow-up recommendation and follow-up recommendation reason. Follow-up MRI reports were analyzed for benign or nonbenign diagnosis. CT scans with iodine maps (CTIMs) and conventional CT scans (CCTs) subgroups were compared using χ2 testing. RESULTS: In all, 3,221 abdominopelvic CT scans of 2,401 patients (1,326 men, 1,075 women, mean age 54.1 years) were analyzed; 1,423 were CTIMs and 1,798 were CCTs. Follow-up recommendation rates were not significantly different for CTIMs and CCTs (19.5% and 21.4%, respectively, P = .19). Follow-up recommendations because of incomplete diagnosis were significantly lower in CTIMs (9.1%) than in CCTs (11.9%, P = .01). Follow-up recommendations for MRI and PET/CT were significantly lower in CTIMs (9.6%) than CCTs (13.0%, P = .003). Follow-up MRI outcomes (n = 111) were not different between CTIMs (61.2% benign) and CCTs (59.6%, P = .87). CONCLUSION: Dual-energy CT iodine maps are associated with decreased follow-up examinations because of incomplete diagnosis and decreased recommendations for follow-up MRI, suggesting that abdominopelvic iodine maps may benefit patient care and decrease institutional cost.
BACKGROUND: Dual-energy CT image sets have many applications in abdominopelvic imaging but no demonstrated clinical effect. PURPOSE: To determine the effect of dual-energy CT iodine maps on abdominopelvic imaging follow-up recommendation rates. MATERIALS AND METHODS: Retrospective study of abdominopelvic CTs acquired from April 2017 through June 2018. CT reports were analyzed for radiologic follow-up recommendation and follow-up recommendation reason. Follow-up MRI reports were analyzed for benign or nonbenign diagnosis. CT scans with iodine maps (CTIMs) and conventional CT scans (CCTs) subgroups were compared using χ2 testing. RESULTS: In all, 3,221 abdominopelvic CT scans of 2,401 patients (1,326 men, 1,075 women, mean age 54.1 years) were analyzed; 1,423 were CTIMs and 1,798 were CCTs. Follow-up recommendation rates were not significantly different for CTIMs and CCTs (19.5% and 21.4%, respectively, P = .19). Follow-up recommendations because of incomplete diagnosis were significantly lower in CTIMs (9.1%) than in CCTs (11.9%, P = .01). Follow-up recommendations for MRI and PET/CT were significantly lower in CTIMs (9.6%) than CCTs (13.0%, P = .003). Follow-up MRI outcomes (n = 111) were not different between CTIMs (61.2% benign) and CCTs (59.6%, P = .87). CONCLUSION: Dual-energy CT iodine maps are associated with decreased follow-up examinations because of incomplete diagnosis and decreased recommendations for follow-up MRI, suggesting that abdominopelvic iodine maps may benefit patient care and decrease institutional cost.
Authors: Anushri Parakh; Chansik An; Simon Lennartz; Prabhakar Rajiah; Benjamin M Yeh; Frank J Simeone; Dushyant V Sahani; Avinash R Kambadakone Journal: Radiographics Date: 2021-02-19 Impact factor: 5.333
Authors: Anushri Parakh; Simon Lennartz; Chansik An; Prabhakar Rajiah; Benjamin M Yeh; Frank J Simeone; Dushyant V Sahani; Avinash R Kambadakone Journal: Radiographics Date: 2021 Jan-Feb Impact factor: 5.333