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Jafari, Salman, Kolivand, Sohrab. (1403). Performance of Iterative Reconstruction in Image Space Algorithm in Combination with Automatic Tube Current Modulation Compared to Filtered Back Projection in Brain CT Scan. سامانه مدیریت نشریات علمی, 14(4), 379-388. doi: 10.31661/jbpe.v0i0.2404-1741
Salman Jafari; Sohrab Kolivand. "Performance of Iterative Reconstruction in Image Space Algorithm in Combination with Automatic Tube Current Modulation Compared to Filtered Back Projection in Brain CT Scan". سامانه مدیریت نشریات علمی, 14, 4, 1403, 379-388. doi: 10.31661/jbpe.v0i0.2404-1741
Jafari, Salman, Kolivand, Sohrab. (1403). 'Performance of Iterative Reconstruction in Image Space Algorithm in Combination with Automatic Tube Current Modulation Compared to Filtered Back Projection in Brain CT Scan', سامانه مدیریت نشریات علمی, 14(4), pp. 379-388. doi: 10.31661/jbpe.v0i0.2404-1741
Jafari, Salman, Kolivand, Sohrab. Performance of Iterative Reconstruction in Image Space Algorithm in Combination with Automatic Tube Current Modulation Compared to Filtered Back Projection in Brain CT Scan. سامانه مدیریت نشریات علمی, 1403; 14(4): 379-388. doi: 10.31661/jbpe.v0i0.2404-1741

Performance of Iterative Reconstruction in Image Space Algorithm in Combination with Automatic Tube Current Modulation Compared to Filtered Back Projection in Brain CT Scan

Journal of Biomedical Physics and Engineering
دوره 14، شماره 4، مهر و آبان 2024، صفحه 379-388    اصل مقاله (1.13 M)
نوع مقاله: Original Research
شناسه دیجیتال (DOI): 10.31661/jbpe.v0i0.2404-1741
نویسندگان
Salman Jafari* 1؛ Sohrab Kolivand2
1Department of Radiology Technology, School of Paramedicine, Hamadan University of Medical Sciences, Hamadan, Iran
2Department of Radiology, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
چکیده
Background: High-quality images with minimum radiation dose are considered a challenge in Computed Tomography (CT) scans.
Objective: The current study aimed to assess the efficacy of the Iterative Reconstruction in Image Space (IRIS) algorithm combined with Automatic Tube Current Modulation (ATCM) compared to Filtered Back Projection (FBP) in brain CT scans.
Material and Methods: In this cross-sectional study, 200 patients underwent to brain CT scan, and images were then reconstructed using both FBP and IRIS. The CT Number (CTN), noise, and Signal-to-Noise Ratio (SNR) were computed for different tissues from CT images. The performance of two algorithms under different exposure conditions was evaluated using a water phantom. Two experienced radiologists assessed the image quality. Volume CT Dose Index (CTDIvol) and Dose Length Product (DLP) were recorded for each scan.
Results: FBP reconstruction exhibited higher noise and lower SNR compared to IRIS, both with and without ATCM. Noise levels significantly increased for FBP combined with ATCM. Subjective analysis showed higher performance for IRIS without ATCM compared to other approaches. The mean CTDIvol with and without ATCM was 20.04±3.33 and 36.37±4.65 mGy, respectively. In the phantom study, the noise with IRIS remained lower than that with FBP even with a 42% dose reduction. 
Conclusion: IRIS algorithm can preserve the image quality when radiation dose is significantly reduced by ATCM in brain CT scan. Implementation of IRIS combined with ATCM is recommended for brain CT examinations.

تازه های تحقیق

Salman Jafari (Google Scholar)

کلیدواژه‌ها
Brain؛ Tomography, X-Ray Computed؛ Radiation Dosages؛ Image Reconstruction؛ Image Quality Enhancement
سایر فایل های مرتبط با مقاله
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