Gubernick, Julie

Kabra, Ashish N, MD

Kricun, Robert, MD

Martinez, Matthew W, MD

Newcomb, James A, MD

Roberts, Justin D, DO

Rosenberg, Howard, MD

Verma, Nitin, MD

English

Lehigh Valley Health Network: LVHN Scholarly Works

Lehigh Valley Health NetworkLVHN Scholarly WorksDepartment of MedicineCoronary CT Radiation Reduction - The LehighValley Health Network ExperienceNitin Verma MDLehigh Valley Health Network, Nitin.Verma@lvhn.orgAshish N. Kabra MDLehigh Valley Health Network, Ashish_N.Kabra@lvhn.orgJustin D. Roberts DOLehigh Valley Health NetworkJames A. Newcomb MDLehigh Valley Health Network, James.Newcomb@lvhn.orgHoward Rosenberg MDLehigh Valley Health Network, Howard.Rosenberg@lvhn.orgSee next page for additional authorsFollow this and additional works at: https://scholarlyworks.lvhn.org/medicinePart of the Cardiology Commons, and the Medical Sciences CommonsThis Poster is brought to you for free and open access by LVHN Scholarly Works. It has been accepted for inclusion in LVHN Scholarly Works by anauthorized administrator. For more information, please contact LibraryServices@lvhn.org.Published In/Presented AtVerma, N., Kabra, A., Roberts, J., Newcomb, J., Rosenberg, H., Gubernick, J., Kricun, R., & Martinez, M. (2011, October 22).Coronary CT radiation reduction - the lehigh valley health network experience. Presented at: The Pennsylvania American College ofCardiology (PaACC) Chapter Meeting, Lafayette Hill, PA.AuthorsNitin Verma MD, Ashish N. Kabra MD, Justin D. Roberts DO, James A. Newcomb MD, Howard RosenbergMD, Julie Gubernick, Robert Kricun MD, and Matthew W. Martinez MDThis poster is available at LVHN Scholarly Works: https://scholarlyworks.lvhn.org/medicine/15Lehigh Valley Health Network, Allentown, PennsylvaniaCoronary CT Radiation Reduction - The Lehigh Valley Health Network ExperienceNitin Verma MD, Ashish Kabra MD, Justin Roberts DO, James A. Newcomb MD, Howard Rosenberger MD, Julie Gubernick, Robert Kricun MD, Matthew W. Martinez MDIschematics display difference in acquisition between retrospectively gated dose modulation and prospective axial scanning.Efforts to reduce radiation exposure in medical imaging are underway nationwide and has become a large focus for our institution. Cardiac computed tomography (CCT) is an important method employed for noninvasive coronary artery assessment.  Several dose reduction strategies have been recently developed to reduce radiation exposure with variable success.We sought to evaluate the effect of iterative reconstruction (IR) and prospective gating (PG) compared with traditional filtered back projection (FBP) to reduce radiation exposure.BackgroundConsecutive patients referred for CCT between Jan 2010 to July 2011 ar our facility were included.Radiation reduction methods for each patient were recorded.Dose-length product was recorded for each patient and the effecive radiation dose in milllisiverts (mSv) was calculated. Methods85 patients were identified, 65% male, 35% female) Mean and median radiation dose were 13.36±7.21 mSy and 13.24(8.5-15.7) mSv. Mean radiation exposure by FBP=17.85 ±6.87, IR without PG=10.77±3.54 mSy, IR with PG=4.33±1.51 mSy.  A significant radiation reduction was observed when comparing FBP with IR without PG (p=<0.0001) and IR with PG (p=<0.0001). The median radiation doses per month at our center decreased from 15.52(13.38-20.04) to 3.93(3.41-5.16) mSv over the duration of the study enrollment with increased use of prospective gating and iterative reconstruction techniques. Results ResultsConclusionsRadiation reduction techniques have resulted in significantly reduced radiation exposure during CCT at our facility.IR in combination with PG results in substantial reduction in radiation, improved patient care and enhanced clinical utility of CCT. Comparison of prospective and retrospective ECG-gated MDCT images obtained 10 min after injection of constrast agentMVO (+)MVO (-)Prospective RetrospectiveSchuleri, K. H. et al. (2009) Applications of cardiac multidetector CT beyond coronary angiographyNat. Rev. Cardiol. doi:10.1038/nrcardio.2009.172A & C - Prospective gatingB & D - Retrospective gatingA & C - Prospective gatingB & D - Retrospective gatingProspective gating Retrospective gating

Coronary CT Radiation Reduction - The Lehigh Valley Health Network Experience

https://scholarlyworks.lvhn.org/cgi/viewcontent.cgi?article=1014&context=medicine

Coronary CT Radiation Reduction - The Lehigh Valley Health Network Experience

Abstract

Similar works

Full text

Available Versions

Lehigh Valley Health Network: LVHN Scholarly Works