scholarly journals T and N Staging of Gastric Cancer Using Dual-Source Computed Tomography

2018 ◽  
Vol 2018 ◽  
pp. 1-10 ◽  
Author(s):  
Zhao-Yong Xie ◽  
Rui-Mei Chai ◽  
Guo-Cheng Ding ◽  
Yi Liu ◽  
Ke Ren
Keyword(s):  
Gastric Cancer ◽  
Computed Tomography ◽  
Adipose Tissue ◽  
Iodine Concentration ◽  
Endoscopic Biopsy ◽  
Portal Phase ◽  
Significant Difference ◽  
Dual Source ◽  
N Staging ◽  
Dual Source Computed Tomography

Aim. This study is aimed at comparing gastric cancer T and N staging between virtual monochromatic energy images and fusion images generated by dual-source computed tomography (DSCT) dual-energy mode data acquisition prospectively while measuring the iodine concentration of gastric cancer and lymph nodes at different T and N stages from iodine map retrospectively. Methods. A total of 71 patients (50 males and 21 females; mean age: 59 ± 11 years) confirmed with gastric cancer by endoscopic biopsy with no neoadjuvant chemotherapy were enrolled for the CT examination before surgeries. The preoperative T and N staging results were compared between groups with pathological results as the gold standard. The iodine concentrations of the gastric lesions and LNs were measured on the iodine-based material decomposition images. All iodine concentration values were normalized against those in the abdominal aorta and defined as normalized iodine concentration (nIC) values. The short axis length of LNs and nIC values were statistically analyzed. Results. Group A was better than group B for T3 and T4 staging. No statistically significant difference in the overall accuracies for N staging was found between groups. For the late arterial and delayed phases, T3 and T4 nIC values of the extraserosal adipose tissue showed statistically significant differences. The nIC values between N0 and Nm (N1–N3) showed statistically significant differences in the portal phase only. Conclusions. T3 and T4 nIC values of the extraserosal adipose tissue showed statistically significant differences. Hence, dual-source CT may be helpful in the differential diagnosis between T3 and T4.

scholarly journals Anatomical Investigation of the Sinus Node Artery Using Dual-Source Computed Tomography

2008 ◽  
Vol 72 (10) ◽  
pp. 1615-1620 ◽  
Author(s):  
Long Jiang Zhang ◽  
Yu Zhu Wang ◽  
Wei Huang ◽  
Peng Chen ◽  
Chang Sheng Zhou ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Sinus Node ◽  
Sinus Node Artery ◽  
Dual Source ◽  
Dual Source Computed Tomography

Visualization of anomalous coronary arteries on dual-source computed tomography

2008 ◽  
Vol 18 (11) ◽  
pp. 2425-2432 ◽  
Author(s):  
G. J. de Jonge ◽  
P. M. A. van Ooijen ◽  
L. H. Piers ◽  
R. Dikkers ◽  
R. A. Tio ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Coronary Arteries ◽  
Dual Source ◽  
Anomalous Coronary ◽  
Anomalous Coronary Arteries ◽  
Dual Source Computed Tomography

The Clinical Value of Nongated Dual-Source Computed Tomography in Atrial Fibrillation Catheter Ablation

2015 ◽  
Vol 27 (1) ◽  
pp. 34-40 ◽  
Author(s):  
TADATERU IWAYAMA ◽  
TAKANORI ARIMOTO ◽  
DAISUKE ISHIGAKI ◽  
NAOAKI HASHIMOTO ◽  
YU KUMAGAI ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Atrial Fibrillation ◽  
Catheter Ablation ◽  
Clinical Value ◽  
Dual Source ◽  
Dual Source Computed Tomography

Automated Tube Voltage Adaptation in Combination with Advanced Modeled Iterative Reconstruction in Thoracoabdominal Third-Generation 192-Slice Dual-Source Computed Tomography

2015 ◽  
Vol 22 (9) ◽  
pp. 1081-1087 ◽  
Author(s):  
Jan-Erik Scholtz ◽  
Julian L. Wichmann ◽  
Kristina Hüsers ◽  
Martin Beeres ◽  
Nour-Eldin Abdelrehim Nour-Eldin ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Iterative Reconstruction ◽  
Third Generation ◽  
Tube Voltage ◽  
Dual Source ◽  
Dual Source Computed Tomography

2113 DUAL SOURCE COMPUTED TOMOGRAPHY FOR DETERMINATION OF STONE COMPOSITION: A PHANTOM STUDY

2010 ◽  
Vol 183 (4S) ◽  
Author(s):  
Brian Eisner ◽  
Ali Daha ◽  
Avinash Kambadakone ◽  
Mohummad Siddiqui ◽  
Dushyant Sahani
Keyword(s):  
Computed Tomography ◽  
Phantom Study ◽  
Stone Composition ◽  
Dual Source ◽  
Dual Source Computed Tomography

scholarly journals Image Quality and Dose Reduction by Dual Source Computed Tomography Coronary Angiography: Protocol Comparison

Dose-Response ◽  
2018 ◽  
Vol 16 (4) ◽  
pp. 155932581880583 ◽  
Author(s):  
Ernesto Forte ◽  
Serena Monti ◽  
Chiara Anna Parente ◽  
Lukas Beyer ◽  
Roberto De Rosa ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Image Quality ◽  
Coronary Angiography ◽  
Effective Dose ◽  
Computed Tomography Coronary Angiography ◽  
Correct Selection ◽  
Dual Source ◽  
Group A ◽  
Noise Ratio ◽  
Dual Source Computed Tomography

Purpose: To compare image quality and radiation dose among different protocols in patients who underwent a 128-slice dual source computed tomography coronary angiography (DSCT-CTCA). Methods: Ninety patients were retrospectively grouped according to heart rate (HR): 26 patients (group A) with stable HR ≤60 bpm were acquired using high pitch spiral mode (FLASH); 48 patients (group B) with irregular HR ≤60 bpm or stable HR between 60 and 70 bpm using step and shoot mode; and 16 patients (group C) with irregular HR >60 bpm or stable HR ≥70 bpm by retrospective electrocardiogram pulsing acquisition. Signal to noise ratio (SNR) and contrast to noise ratio (CNR) were measured for the main vascular structures. Moreover, the dose-length product and the effective dose were assessed. Results: Both SNR and CNR were higher in group A compared to group C (18.27 ± 0.32 vs 11.22 ± 0.50 and 16.75 ± 0.32 vs 10.17 ± 0.50; P = .001). The effective dose was lower in groups A and B (2.09 ± 1.27 mSv and 4.60 ± 2.78 mSv, respectively) compared to group C (9.61 ± 5.95 mSv) P < .0001. Conclusion: The correct selection of a low-dose, HR-matched CTCA scan protocol with a DSCT scanner provides substantial reduction of radiation exposure and better SNR and CNR.

Sign in / Sign up

Export Citation Format

Share Document