Effect of Increasing Body Mass Index on Image Quality and Positive Predictive Value of 100-kV Coronary Computed Tomographic Angiography

2010 ◽  
Vol 106 (8) ◽  
pp. 1182-1186 ◽  
Author(s):  
John S. Ho ◽  
Carolyn E. Barlow ◽  
Dale B. Reinhardt ◽  
Wendy A. Wade ◽  
John J. Cannaday
Keyword(s):  
Body Mass Index ◽  
Image Quality ◽  
Positive Predictive Value ◽  
Body Mass ◽  
Predictive Value ◽  
Computed Tomographic Angiography ◽  
Coronary Computed Tomographic Angiography ◽  
Computed Tomographic ◽  
Tomographic Angiography

scholarly journals Diagnostic Validity of 3D-Computed Tomographic Angiography in Spontaneous Subarachnoid Haemorrhage

2019 ◽  
Vol 5 (1) ◽  
pp. 47-52
Author(s):  
Nur Mohammad ◽  
Jalal Uddin Mohammad Rumi ◽  
Sadia Jabeen Khan ◽  
Kalim Uddin ◽  
Patoary Mohammed Faruque
Keyword(s):  
Intracranial Aneurysm ◽  
Positive Predictive Value ◽  
Subarachnoid Haemorrhage ◽  
Negative Predictive Value ◽  
Predictive Value ◽  
Intracranial Aneurysms ◽  
Computed Tomographic Angiography ◽  
Diagnostic Validity ◽  
Computed Tomographic ◽  
Tomographic Angiography

Background: Diagnostic validity of different tests for the detection of spontaneous subarachnoid haemorrhage is an important issue. Objectives: The purpose of the present study was to validate 3D-Computed tomographic angiography in spontaneous subarachnoid haemorrhage. Methodology: This cross-sectional study was carried out in the Department of Neurosurgery and Cath Lab of DMCH in collaboration with private diagnostic centre from September 2013 to February 2015 for a period of six (06) months. Adult patients diagnosed as a case of spontaneous SAH based on clinical features and confirmed by plain CT evidence of subarachnoid blood were included as study population. Patients having current history of trauma, poor clinical grade and agitated patient, patient with renal insufficiency, known allergy to iodinated contrast agent and patients who were not willing participate in the study were excluded from this study. Then both CT angiography and DSA were performed to detect cause of bleeding and to make a treatment planning. In this study DSA was considered as reference standard for evaluation of CTA. Sensitivity, specificity, positive predictive value, negative predictive value and diagnostic accuracy of CTA were calculated per patient basis and per aneurysmal basis. Result: A total number of 37 patients presented with spontaneous subarachnoid haemorrhage were recruited for this study. The mean age of patients was 58.53±7.54 years. Sensitivity and specificity in depicting intracranial aneurysms were, 93.75% and 100% respectively on a per-patient basis. Positive predictive value and negative predictive value of CTA are 100% and 71.43% respectively. CTA had shown 94.59% accuracy in detection of intracranial aneurysm. Sensitivity and specificity in depicting intracranial aneurysms were 94.74% and 100% respectively on a per-aneurysm basis. Positive predictive value and negative predictive value of CTA are 100% and 71.43% respectively. CTA had shown 95.35% accuracy in detection of intracranial aneurysm. Conclusion: In conclusion CTA has high detection capacity of aneurysm among spontaneous subarachnoid haemorrhage patients. Journal of National Institute of Neurosciences Bangladesh, 2019;5(1): 47-52

Automated estimation of image quality for coronary computed tomographic angiography using machine learning

2018 ◽  
Vol 28 (9) ◽  
pp. 4018-4026 ◽  
Author(s):  
Rine Nakanishi ◽  
Sethuraman Sankaran ◽  
Leo Grady ◽  
Jenifer Malpeso ◽  
Razik Yousfi ◽  
...  
Keyword(s):  
Machine Learning ◽  
Image Quality ◽  
Computed Tomographic Angiography ◽  
Coronary Computed Tomographic Angiography ◽  
Computed Tomographic ◽  
Tomographic Angiography

scholarly journals Accuracy and Reproducibility of Assessing Patent Foramen Ovale on Coronary Computed Tomographic Angiography: A Comparison with Transesophageal Echocardiography

2021 ◽  
Author(s):  
Li Xiong ◽  
Yingting Zeng ◽  
Tian Gan ◽  
Feifei Yan ◽  
Jiao Bai ◽  
...  
Keyword(s):  
Transesophageal Echocardiography ◽  
Predictive Value ◽  
Patent Foramen Ovale ◽  
Computed Tomographic Angiography ◽  
High Accuracy ◽  
Right Atrial ◽  
Foramen Ovale ◽  
Coronary Computed Tomographic Angiography ◽  
Computed Tomographic ◽  
Tomographic Angiography

Abstract This study was undertaken to determine if coronary computed tomographic angiography (CCTA) can help to assess patent foramen ovale (PFO) with high accuracy and reproducibility when compared to Transesophageal Echocardiography (TEE). In total, 75 patients (31 men, 44 women; mean age, 45 ± 9 years) with suspected PFO were evaluated using coronary CCTA and TEE. PFO tunnel length (TL) and the opening diameter of the left atrial entrance (ODLAE) and right atrial entrance (ODRAE), as well as contrast shunt (if present due to PFO), were measured by both modalities. PFO was detected in 67 patients with TEE. The sensitivity for the detection of PFO with CCTA was 85.3%; specificity, 71.4%; positive predictive value, 96.7%; and negative predictive value, 33.3%. Both modalities demonstrated good agreement in measuring TL and ODLAE of PFO. However, the ODRAE of TEE was different from that of CCTA (1.14 ± 0.4 mm and 1.45 ± 0.5 mm, respectively, p = 0.04). The intraobserver and interobserver variability and agreement for TL, ODRAE, and ODLAE of PFO were excellent between the two measurements. CCTA provided a method for detection of PFO with high accuracy and reproducibility compared with TEE. Therefore, CCTA is a practical and efficient alternative to TEE for PFO diagnosis.

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