Computed tomography (CT) has established itself as a primary diagnostic imaging modality in cardiac anomalies1. With its fast scanning speed and isotropic spatial resolution at 0.3–0.4 mm, CT allows diagnosis safely and accurately than alternative more invasive or less sensitive imaging techniques. With high quality CT imaging being performed more frequently, patients can benefit from a quicker and more accurate diagnosis and precise anatomic information for planning therapeutic procedures. However, in spite of the tremendous contributions of CT to modern healthcare, some attention must also...
Description of activity and work performed
To reduce radiation dose from Multidetector computed tomography (MDCT) using techniques with low tube voltage and modified image parameters without significant degradation of image quality.
Radiation dose reduction using 80 kV and 100 kV protocols for MDCT.
MATERIALS AND METHODS:
This is a prospective analysis with single blind selection of cardiac anomaly patients referred to radiology department of Rehman medical institute Peshawar for cardiac CT scan during Jan 2013 to Dec 2015. Total of 100 patients with age range of 1 week...
Conclusion and recommendations
We conclude from our results that prospective ECG gated cardiac CT, low kVp and mAs values show great potential for substantially reducing radiation dose of cardiac CT angiography. By using different radiation lowering dose techniques i.e. prospective ECG gating technique, low kVp and mAs, we were able to reduce radiation dose by 83.45% (22 to 3.46 mSv).
Clinical Relevance and Recommendations:
Cardiac CT is achievable at sub-mSv using modified technique parameters i.e. an image-based safe CT without significant compromise in image quality at 69%...
Dr. Ummara Siddique Umer
MBBS (KEMC), FCPS (Radiology) ,EDiR (EBR)
Consultant Radiologist &Assistant Professor of Radiology
Rehman Medical Institute Peshawar
Institution from which the work originated:
Rehman Medical Institute and Rehman Medical College Peshawar
5-B/2 phase 5, Hayatabad Peshawar, Pakistan
U. S. Umer; Peshawar/PK - nothing to disclose.
S. Alam; Peshawar/PK - nothing to disclose.
S. Ghulam Ghaus; Peshawar/PK - nothing to disclose
A. Nawaz Khan; Peshawar/PK - nothing to disclose.
S. Gul; Peshawar/PK - nothing to disclose.
Yu L, Liu X, Leng S, Kofler JM, Ramirez-Giraldo JC, Qu M, Christner J, Fletcher JG, et al. Radiation dose reduction in computed tomography: techniques and future perspective. Imaging Med. 2009 Oct; 1(1): 65–84.
McCollough CH, Primak AN, Braun N, Kofler J, Yu L, and Christner J, PhD. Strategies for Reducing Radiation Dose in CT. Radiol Clin North Am. 2009 Jan; 47(1): 27–40.
Bethesda. National Council on Radiation Protection and Measurements. Ionizing radiation exposure of the population of the United States: National Council on Radiation...