Lossy Three-dimensional JPEG2000 Compression of Abdominal CT Images: Assessment of the Visually Lossless Threshold and Effect of Compression Ratio on Image Quality

Radiology ◽  
2007 ◽  
Vol 245 (2) ◽  
pp. 467-474 ◽  
Author(s):  
Helmut Ringl ◽  
Ruediger E. Schernthaner ◽  
Christiane Kulinna-Cosentini ◽  
Michael Weber ◽  
Cornelia Schaefer-Prokop ◽  
...  
Keyword(s):  
Image Quality ◽  
Compression Ratio ◽  
Three Dimensional ◽  
Ct Images ◽  
Abdominal Ct ◽  
Jpeg2000 Compression

JPEG2000 Compression of Thin-Section CT Images of the Lung: Effect of Compression Ratio on Image Quality

Radiology ◽  
2006 ◽  
Vol 240 (3) ◽  
pp. 869-877 ◽  
Author(s):  
Helmut Ringl ◽  
Ruediger E. Schernthaner ◽  
Alexander A. Bankier ◽  
Michael Weber ◽  
Mathias Prokop ◽  
...  
Keyword(s):  
Image Quality ◽  
Thin Section ◽  
Compression Ratio ◽  
Ct Images ◽  
Jpeg2000 Compression

Lossy 3D JPEG2000 Compression of Abdominal CT Images in Patients with Acute Abdominal Complaints: Effect of Compression Ratio on Diagnostic Confidence and Accuracy

Radiology ◽  
2008 ◽  
Vol 248 (2) ◽  
pp. 476-484 ◽  
Author(s):  
Helmut Ringl ◽  
Ruediger Schernthaner ◽  
Evis Sala ◽  
Karem El-Rabadi ◽  
Michael Weber ◽  
...  
Keyword(s):  
Compression Ratio ◽  
Ct Images ◽  
Diagnostic Confidence ◽  
Abdominal Ct ◽  
Jpeg2000 Compression

Texture-learning-based system for three-dimensional segmentation of renal parenchyma in abdominal CT images

2009 ◽  
Author(s):  
Cong-Qi Peng ◽  
Yuan-Hsiang Chang ◽  
Li-Jen Wang ◽  
Yon-Choeng Wong ◽  
Yang-Jen Chiang ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Ct Images ◽  
Renal Parenchyma ◽  
Abdominal Ct ◽  
Three Dimensional Segmentation

Development of extraction method of kidneys from abdominal CT images using a three-dimensional deformable model

2003 ◽  
Vol 34 (5) ◽  
pp. 37-46 ◽  
Author(s):  
Baigalmaa Tsagaan ◽  
Akinobu Shimizu ◽  
Hidefumi Kobatake ◽  
Kunihisa Miyakawa
Keyword(s):  
Extraction Method ◽  
Three Dimensional ◽  
Ct Images ◽  
Deformable Model ◽  
Abdominal Ct

Simultaneous segmentation of multi-organ in three dimensional abdominal CT images

2005 ◽  
Vol 1281 ◽  
pp. 1275 ◽  
Author(s):  
A. Shimizu ◽  
T. Ikegami ◽  
T. Yanagita ◽  
H. Kobatake ◽  
S. Nawano
Keyword(s):  
Three Dimensional ◽  
Ct Images ◽  
Abdominal Ct

A Coarse-to-Fine Registration on 3D Multi-Phase Abdominal CT Images

2020 ◽  
Vol 12 (7) ◽  
pp. 909-914
Author(s):  
Shao-Di Yang ◽  
Fan Zhang ◽  
Zhen Yang ◽  
Xiao-Yu Yang ◽  
Shu-Zhou Li
Keyword(s):  
Three Dimensional ◽  
Ct Images ◽  
Abdominal Ct ◽  
Registration Method ◽  
Coarse Registration ◽  
Multi Phase ◽  
Coarse To Fine ◽  
Aided Diagnosis ◽  
Fine Registration ◽  
Spatial Regularization

Registration is a technical support for the integration of nanomaterial imaging-aided diagnosis and treatment. In this paper, a coarse-to-fine three-dimensional (3D) multi-phase abdominal CT images registration method is proposed. Firstly, a linear model is used to coarsely register the paired multiphase images. Secondly, an intensity-based registration framework is proposed, which contains the data and spatial regularization terms and performs fine registration on the paired images obtained in the coarse registration step. The results illustrate that the proposed method is superior to some existing methods with the average MSE, PSNR, and SSIM values of 0.0082, 21.2695, and 0.8956, respectively. Therefore, the proposed method provides an efficient and robust framework for 3D multi-phase abdominal CT images registration.

CT Images of Abdomen and Pelvis: Effect of Nonlinear Three-dimensional Optimized Reconstruction Algorithm on Image Quality and Lesion Characteristics

Radiology ◽  
2005 ◽  
Vol 237 (1) ◽  
pp. 309-315 ◽  
Author(s):  
Stefania M. R. Rizzo ◽  
Mannudeep K. Kalra ◽  
Bernhard Schmidt ◽  
Rainer Raupach ◽  
Michael M. Maher ◽  
...  
Keyword(s):  
Image Quality ◽  
Three Dimensional ◽  
Reconstruction Algorithm ◽  
Ct Images

scholarly journals Optimization of contrast medium volume for abdominal CT in oncologic patients: prospective comparison between fixed and lean body weight-adapted dosing protocols

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Damiano Caruso ◽  
Elisa Rosati ◽  
Nicola Panvini ◽  
Marco Rengo ◽  
Davide Bellini ◽  
...  
Keyword(s):  
Body Weight ◽  
Image Quality ◽  
Contrast Media ◽  
Lower Amount ◽  
Fixed Dose ◽  
Lean Body Weight ◽  
Abdominal Ct ◽  
Oncologic Patients ◽  
Noise Ratio ◽  
Parenchymal Enhancement

Abstract Background Patient body size represents the main determinant of parenchymal enhancement and by adjusting the contrast media (CM) dose to patient weight may be a more appropriate approach to avoid a patient over dosage of CM. To compare the performance of fixed-dose and lean body weight (LBW)-adapted contrast media dosing protocols, in terms of image quality and parenchymal enhancement. Results One-hundred cancer patients undergoing multiphasic abdominal CT were prospectively enrolled in this multicentric study and randomly divided in two groups: patients in fixed-dose group (n = 50) received 120 mL of CM while in LBW group (n = 50) the amount of CM was computed according to the patient’s LBW. LBW protocol group received a significantly lower amount of CM (103.47 ± 17.65 mL vs. 120.00 ± 0.00 mL, p < 0.001). Arterial kidney signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR) and pancreatic CNR were significantly higher in LBW group (all p ≤ 0.004). LBW group provided significantly higher arterial liver, kidney, and pancreatic contrast enhancement index (CEI) and portal venous phase kidney CEI (all p ≤ 0.002). Significantly lower portal vein SNR and CNR were observed in LBW-Group (all p ≤ 0.020). Conclusions LBW-adapted CM administration for abdominal CT reduces the volume of injected CM and improves both image quality and parenchymal enhancement.

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