Contrast agent bolus tracking with a fixed threshold or a manual fast start for coronary CT angiography

Stenzel, Fabian; Rief, Matthias; Zimmermann, Elke; Greupner, Johannes; Richter, Felicitas; Dewey, Marc

doi:10.1007/s00330-014-3148-3

Cited by 16 publications

(5 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the present study shows automatic bolus tracking provided better enhancement and Stenzel et al, (2014) or coronary CT angiography, researchers compared bolus tracking with a predetermined trigger and manual fast start, and they came to the conclusion that both methods bolus tracking with a preset threshold and a manual fast start are appropriate. Their founding's were different from our study because our study shows significant differences between automatic bolus tracking and manual bolus tracking.…”

Section: Analysis Article | Open Accessmentioning

confidence: 71%

Comparative study of automatic bolus tracking and manual bolus tracking in triphasic Computed Tomography of the abdomen

Shaji,

KM,

Dabholkar

2023

View full text Add to dashboard Cite

Background: A computer-assisted bolus tracking system that initiates diagnostic scans prompted by contrast enhancement was recently developed.Using low-dose scans, this technology allows the scans to start, either manually or automatically, when the contrast enhancement rises to a predefined threshold (ROI). We aimed to compare the automatic bolus tracking and manual bolus tracking triphasic contrast enhancement in the abdomen. Materials and Methods: To compare automatic bolus tracking and manual bolus tracking method for contrast enhancement in the Hounsfield Unit of abdominal vessels and measure the delay in contrast enhancement in automatic and manual bolus tracking methods. The studies were conducted in the Department of Radio-diagnosis. 72 participants were included in the study that underwent triphasic CECT abdomen. Results: The Thoracic Aorta (HU) and Abdominal Aorta (HU) of the two groups differ significantly (P value 0.001). There is a substantial difference between the two groups in Hepatic Artery (HU) and Delay Time (S) (P value 0.001). Conclusion: This study revealed that automatic bolus tracking was the most beneficial approach in triphasic CECT Abdomen when compared to manual bolus tracking.

show abstract

Section: Analysis Article | Open Accessmentioning

confidence: 71%

Comparative study of automatic bolus tracking and manual bolus tracking in triphasic Computed Tomography of the abdomen

Shaji,

KM,

Dabholkar

2023

View full text Add to dashboard Cite

show abstract

“…This method may involve additional contrast agents and higher radiation, but when well planned will result in the ideal opacification of the target structure. The bolus-tracking technique is the most commonly used method in congenital heart disease. With this method, the scan is triggered when vascular enhancement reaches an adequate level in a structure of interest monitored on a target, usually mid-cardiac, slice 57 . This level should be before optimal opacification though, to account for the delay between scan triggering and initiation.…”

Section: When To Perform Cardiac Ct In Children: Clinical Indicationsmentioning

confidence: 99%

“…With this method, the scan is triggered when vascular enhancement reaches an adequate level in a structure of interest monitored on a target, usually mid-cardiac, slice. 57 This level should be before optimal opacification though, to account for the delay between scan triggering and initiation. Automatic triggering, using a region of interest with a Hounsfield unit threshold (eg, 150 HU at 100 kV, with higher thresholds for lower kilovolt), can be difficult in children, given the risk of errors from the combination of small vascular structures and potential movement.…”

Section: Scan Timingmentioning

confidence: 99%

Pediatric Cardiovascular Computed Tomography

Kardos,

Curione,

Valverde

et al. 2023

Journal of Thoracic Imaging

View full text Add to dashboard Cite

Congenital heart diseases affect 1% of all live births in the general population. The prognosis of these children is increasingly improving due to advances in medical care and surgical treatment. Imaging is also evolving rapidly to assess accurately complex cardiac anomalies prenatally and postnatally. Transthoracic echocardiography is the gold-standard imaging technique to diagnose and follow-up children with congenital heart disease. Cardiac computed tomography imaging plays a key role in the diagnosis of children with congenital heart defects that require intervention, due to its high temporal and spatial resolution, with low radiation doses. It is challenging for radiologists, not primarily specialized in this field, to perform and interpret these studies due to the difficult anatomy, physiology, and postsurgical changes. Technical challenges consist of necessary electrocardiogram gating and contrast bolus timing to obtain an optimal examination. This article aims to define indications for pediatric cardiac computed tomography, to explain how to perform and report these studies, and to discuss future applications of this technique.

show abstract

“…Since this method involves both additional contrast and radiation exposure, it is not routinely used in children. With the bolus tracking technique, the scan is triggered when vascular enhancement reaches an adequate level in a structure of interest monitored on a target slice [21]. Automatic triggering, using a region of interest with a Hounsfield unit (HU) threshold (e.g.…”

Section: Scan Timingmentioning

confidence: 99%

Dual-source computed tomography coronary artery imaging in children

et al. 2019

View full text Add to dashboard Cite

Computed tomography (CT) has a well-established diagnostic role in the assessment of coronary arteries in adults. However, its application in a pediatric setting is still limited and often impaired by several technical issues, such as high heart rates, poor patient cooperation, and radiation dose exposure. Nonetheless, CT is becoming crucial in the non-invasive approach of children affected by coronary abnormalities and congenital heart disease. In some circumstances, CT might be preferred to other noninvasive techniques such as echocardiography and magnetic resonance imaging for its lack of acoustic window influence, shorter acquisition time, and high spatial resolution. The introduction of dual source computed tomography (DSCT) has expanded the role of CT in the evaluation of pediatric cardiovascular anatomy and pathology. Furthermore, technical advances in the optimization of low-dose protocols represent an attractive innovation. DSCT can play a key role in several clinical settings in children, namely in the evaluation of patients with suspected congenital coronary artery anomalies, both isolated and in association with congenital heart disease. Moreover, it is able to assess acquired coronary artery abnormalities, as in patients with Kawasaki disease and after surgical manipulation, especially in case of transposition of the great arteries treated with arterial switch operation and in case of coronary reimplantation.

show abstract

Contrast agent bolus tracking with a fixed threshold or a manual fast start for coronary CT angiography

Cited by 16 publications

References 48 publications

Comparative study of automatic bolus tracking and manual bolus tracking in triphasic Computed Tomography of the abdomen

Comparative study of automatic bolus tracking and manual bolus tracking in triphasic Computed Tomography of the abdomen

Pediatric Cardiovascular Computed Tomography

Dual-source computed tomography coronary artery imaging in children

Contact Info

Product

Resources

About