Heart Rate Adaptive Optimization of Spatial and Temporal Resolution for Electrocardiogram-Gated Multislice Spiral CT of the Heart

2001 ◽  
Vol 25 (6) ◽  
pp. 907-923 ◽  
Author(s):  
Thomas Flohr ◽  
Bernd Ohnesorge
Keyword(s):  
Heart Rate ◽  
Temporal Resolution ◽  
Spiral Ct ◽  
Adaptive Optimization ◽  
Multislice Spiral Ct ◽  
Rate Adaptive

A spontán mellkasfali sérvekről két operált eset kapcsán

2010 ◽  
Vol 63 (2) ◽  
pp. 80-83 ◽  
Author(s):  
Károly Vincze ◽  
Péter Zádori ◽  
Zsolt Magyaródi ◽  
Gyula Horváth
Keyword(s):  
Volume Rendering ◽  
Spiral Ct ◽  
Multislice Spiral Ct ◽  
3D Volume ◽  
3D Volume Rendering

Absztrakt A szerzők a világirodalmi ritkaságnak számító atraumaticus (spontán) mellkasfali tüdősérvet ismertetik. Két operált betegük kapcsán bemutatják a sérv kialakulását elősegítő körülményeket és a kórkép klinikai jellemzőit. Mindkét betegük spontán mellkasfali (intercostalis) sérvét chronicus obstructiv syndroma (COPD) okozta makacs köhögés váltotta ki. Az elvégzett multislice spirál CT (MSCT) vizsgálat, valamint a speciális szoftver segítségével készített másodlagos 3D „volume-rendering” (VRT) rekonstrukciós képek egyértelműen utaltak a ritka kórformára. Az MSCT-vizsgálatok a Kaposi Mór Oktató Kórházban készültek, Siemens Somatom Emotion 6 MSCT-berendezéssel. A pontos diagnózis birtokában végzett mellkasfali korrekciók tartós gyógyuláshoz vezettek. A szerzők röviden ismertetik a mellkasfali sérvekkel kapcsolatos hazai és fontosabb külföldi irodalmi vonatkozásokat. A kórkép rendkívüli ritkasága ellenére a kialakulásában szerepet játszó COPD elterjedtsége miatt érdemel figyelmet. A hasonló esetek diagnosztikájában nagy segítséget jelenthet a bemutatott korszerű képalkotó eljárás alkalmazása.

Heart rate during exercise: What is the optimal goal of rate adaptive pacemaker therapy?

1994 ◽  
Vol 127 (4) ◽  
pp. 1026-1030 ◽  
Author(s):  
Thorsten Lewalter ◽  
Werner Jung ◽  
Dean MacCarter ◽  
Torsten Bauer ◽  
Rainer Schimpf ◽  
...  
Keyword(s):  
Heart Rate ◽  
Pacemaker Therapy ◽  
Rate Adaptive

scholarly journals THE ROLE OF MULTISLICE SPIRAL CT IN CASES OF HEAD TRAUMA

2016 ◽  
Vol 5 (70) ◽  
pp. 5105-5111
Author(s):  
Daisy Gupta ◽  
Bharat Gupta ◽  
Sohan Singh
Keyword(s):  
Head Trauma ◽  
Spiral Ct ◽  
Multislice Spiral Ct

scholarly journals Application of Multislice Spiral CT Volume Reconstruction in Congenital Microtia Reconstruction

2021 ◽  
Vol 2021 ◽  
pp. 1-6
Author(s):  
Hongjuan Jin ◽  
Weihai Peng
Keyword(s):  
Bone Destruction ◽  
Reference Value ◽  
Spiral Ct ◽  
Ossicular Chain ◽  
External Ear ◽  
Volume Reconstruction ◽  
Multislice Spiral Ct ◽  
Different Types ◽  
Auricle Reconstruction ◽  
Ct Volume

Objective. To investigate the application of multislice spiral CT in volume reconstruction of congenital microtia. Methods. Sixty patients who underwent auricle reconstruction in Otolaryngology Hospital of our hospital from April 2020 to April 2021 were selected. All patients had no mental disorders and normal cognitive ability and volunteered to participate in this study. Multislice spiral CT was used to evaluate the diagnostic accuracy of multislice spiral CT by scanning the morphology of the ossicular chain and the bone destruction of the selected patients. Results. MSCT can clearly display the structure of ear. Conclusion. MSCT can clearly reflect the external ear and the structure of the ear in patients with congenital microtia and distinguish the different types of patients obviously. Multiplane reconstruction and volume reconstruction can clearly display the fine structure of the patient’s ear, which has important reference value for surgery.

scholarly journals Multislice Spiral Computed Tomography under Hybrid Iterative Reconstruction Algorithm in Staging Diagnosis of Bladder Cancer and Ceramide Glycosylation

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Jun Liu ◽  
Xiaolong Jiang
Keyword(s):  
Optical Density ◽  
Iterative Reconstruction ◽  
Reconstruction Algorithm ◽  
Spiral Ct ◽  
Glucosylceramide Synthase ◽  
Multislice Spiral Ct ◽  
Iterative Reconstruction Algorithm ◽  
Hybrid Iterative Reconstruction ◽  
Group 2 ◽  
Group 1

This study was to discuss the application of multislice spiral computed tomography (CT) in the staging diagnosis of bladder cancer and the effect of ceramide glycosylation. The hybrid iterative reconstruction algorithm was applied. Immunohistochemistry and western blot were used to detect the normal bladder tissues (30 cases) of GCS in group 1 (100 cases) and group 2. The scanned images of all the research objects were obtained, the images with the iterative reconstruction algorithm were reconstructed, and statistical analysis on the CT value under the algorithm was conducted. The results showed that the image quality, blood vessel sharpness, average image score, signal-to-noise ratio, and radiation dose after the spiral CT and iterative reconstruction algorithm all increased, while the noise value decreased. The optical density value of glucosylceramide synthase in group 2 patients increased by 71%, and the optical density value of group 1 increased by 29%. The optical density expression of glucosylceramide synthase in group 1 patients was significantly higher than that in the control group, and there was a statistical difference between the two ( P < 0.05 ). Among the results of multislice spiral CT for tumor staging, the lesions larger than 5 cm and in the range of 1.1–2 cm in diameter were more sensitive. In 41 patients, there were multiple lesions. A total of 142 cancer lesions were found. The diameter of the tissue ranged from 0.5 to 6.8 cm, with an average diameter of 2.03 ± 0.35 cm. The optical density of glucosylceramide synthase in the group 1 was 5526, and the optical density in group 2 was 2576. The OD expression of GCS in group 1 was greatly higher in contrast to that in group 2, and there was a statistical difference between the two groups ( P < 0.05 ). The multislice spiral CT examination under this algorithm found that the diagnosis and staging accuracy of lesions with a diameter greater than 5 cm and tumor diameters in the range of 1.1 to 2 cm was higher. The image processed by the hybrid iterative reconstruction algorithm had good effect, high definition, and accuracy.

Spiral interpolation algorithm for multislice spiral CT. I. Theory

2000 ◽  
Vol 19 (9) ◽  
pp. 822-834 ◽  
Author(s):  
W.A. Kalender ◽  
T. Fuchs ◽  
J. Krause ◽  
K. Klingenbeck ◽  
T. Flohr ◽  
...  
Keyword(s):  
Spiral Ct ◽  
Interpolation Algorithm ◽  
Multislice Spiral Ct

scholarly journals Serum S100A12 and Progression of Coronary Artery Calcification Over 4 Years in Hemodialysis Patients

2015 ◽  
Vol 42 (1) ◽  
pp. 4-13 ◽  
Author(s):  
Yin-na Wang ◽  
Yi Sun ◽  
Ying Wang ◽  
Yan-li Jia
Keyword(s):  
Coronary Artery ◽  
Coronary Artery Calcification ◽  
Spiral Ct ◽  
Hemodialysis Patients ◽  
Rapid Progression ◽  
Multislice Spiral Ct ◽  
Rapid Progressors ◽  
Slow Progressors ◽  
Severe Coronary Artery ◽  
Independent Determinant

Background/Aim: Vascular calcification is common and contributes to increased cardiovascular mortality in hemodialysis (HD) patients. In this prospective study, we aimed to investigate the associations of serum S100A12 in the presence of severe coronary artery calcification (CAC) and the progression of CAC in HD patients. Methods: Sixty maintenance HD patients and 30 controls were enrolled. Serum S100A12 levels were measured using ELISA. CAC scores (CACs) were measured twice at a 4-year interval using multislice spiral CT. The HD patients were classified as rapid progressors or slow progressors according to the change in the CACs across these 2 measurements (ΔCACs). Results: The incidences of rapid progression of CAC in patients with baseline CACs ≤10, CACs >10 and CACs >400 were 12.5, 40.0 and 64.3%, respectively. Both baseline and 4-year serum S100A12 levels were significantly higher in the rapid progressors than in the slow progressors (medians of 45.6 vs. 30.2 ng/ml, p < 0.001 and 62.3 vs. 39.4 ng/ml, p = 0.002, respectively). The serum S100A12 levels were significantly correlated with baseline CACs (r = 0.466, p < 0.001), 4-year CACs (r = 0.440, p < 0.001) and ΔCACs (r = 0.392, p < 0.001). Importantly, the ΔCACs were significantly correlated with ΔS100A12 levels (r = 0.396, p < 0.001). Logistic regression analysis revealed that the serum S100A12 level was as an independent determinant of the presence of severe CAC and that the increment in the serum S100A12 level was a factor that was significantly independently associated with the progression of CAC. Conclusions: Serum S100A12 levels were significantly associated with the presence of severe CAC, and the increment in serum S100A12 levels was an independent determinant of the progression of CAC.

scholarly journals Clinical significance of multislice spiral CT scans in hepatic veins occlusion in Budd-Chiari syndrome

2007 ◽  
Vol 120 (2) ◽  
pp. 100-105 ◽  
Author(s):  
Xiao-chun MENG ◽  
Kang-shun ZHU ◽  
Jie QIN ◽  
Jian-sheng ZHANG ◽  
Xiao-hong WANG ◽  
...  
Keyword(s):  
Clinical Significance ◽  
Spiral Ct ◽  
Ct Scans ◽  
Hepatic Veins ◽  
Budd Chiari Syndrome ◽  
Multislice Spiral Ct ◽  
Chiari Syndrome
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