Evaluation of ventricular septal defects using high pitch computed tomography angiography of the chest in children with complex congenital heart defects below one year of age

Nau, David P.; Wuest, Wolfgang; Rompel, Oliver; Hammon, Matthias; Gloeckler, Martin; Toka, Okan; Dittrich, Sven; Rueffer, André; Cesnjevar, Robert; Lell, Michael; Uder, Michael; May, Matthias

doi:10.1016/j.jcct.2019.01.023

Cited by 8 publications

(4 citation statements)

References 43 publications

(27 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, comparability to other studies is limited. However, other studies on third-generation dual-source CT units with tube voltages of 70-kV utilized an identical conversion factor with similar results regarding effective radiation dose [9,14]. A decrease in tube voltage naturally leads to an increase in image noise due to lower photon flux and beam-hardening artifacts.…”

Section: Discussionmentioning

confidence: 83%

“…Radiation exposure was assessed as volu-metric CT dose index (CTDIvol), referring to a 32 cm acrylic phantom. The effective dose (ED) was estimated as DLP*k, applying an individual linear interpolation of a conversion factor reported for chest CT in neonates (k 0 = 0.0823 mSv/mGy*cm) and 1-year-olds (k 1 = 0.0525 mSv/mGy*cm) at 80 kV as a function of days of life [13,14]:…”

Section: Radiation Dosementioning

confidence: 99%

See 1 more Smart Citation

Sensitivity of High-Pitch Dual-Source Computed Tomography for the Detection of Anomalous Pulmonary Venous Connection in Infants

Well

Weinrich

Meyer

et al. 2020

Rofo

View full text Add to dashboard Cite

Purpose To evaluate the sensitivity, specificity, and interobserver reliability of high-pitch dual-source computed tomography angiography (CTA) in the detection of anomalous pulmonary venous connection (APVC) in infants with congenital heart defects and to assess the associated radiation exposure. Materials and Methods 78 pulmonary veins in 17 consecutively enrolled patients with congenital heart defects (6 females; 11 males; median age: 6 days; range: 1–299 days) were retrospectively included in this study. All patients underwent high-pitch dual-source CTA of the chest at low tube voltages (70 kV). APVC was evaluated independently by two radiologists. Sensitivity, specificity, positive (PPV) and negative predictive values (NPV), and interobserver agreement were determined. For standard of reference, one additional observer reviewed CT scans, echocardiography reports, clinical reports as well as surgical reports. In cases of disagreement the additional observer made the final decision based on all available information. Results Detection of APVC with high-pitch dual-source CTA revealed a good sensitivity (91 %) and specificity (99 %), with PPV and NPV of 98 % and 97 %. Interobserver agreement was almost perfect (Kappa = 0.84). The median DLP was 3.8 mGy*cm (IQR 3.3–4.7 mGy*cm) and the median radiation dose was 0.33 mSv (IQR 0.26–0.39 mSv). Conclusion High-pitch dual-source CTA in infants with congenital heart defects allows for accurate and reliable assessment of APVC at a low radiation dose. Key Points: Citation Format

show abstract

Section: Discussionmentioning

confidence: 83%

Section: Radiation Dosementioning

confidence: 99%

Sensitivity of High-Pitch Dual-Source Computed Tomography for the Detection of Anomalous Pulmonary Venous Connection in Infants

Well

Weinrich

Meyer

et al. 2020

Rofo

View full text Add to dashboard Cite

show abstract

“…The third‐generation DSCT turbo FLASH mode is equipped with wider detector rows and has a gantry rotation speed of 0.25 s, 737 mm/s feed table, and a temporal resolution up to 66 ms with a pitch of 3.2. The acquisition time of the high‐pitch wide‐coverage scan is significantly reduced, which helps to eliminate the motion artifacts in the cardiovascular application when dealing with the uncooperative or pediatric patients, 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 and to reduce the radiation dose and contrast volume when the high‐pitch low‐voltage protocols are used. 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 …”

Section: Introductionmentioning

confidence: 99%

The ultrafast, high‐pitch turbo FLASH mode of third‐generation dual‐source CT: Effect of different pitch and corresponding SFOV on image quality in a phantom study

Zhou

et al. 2021

J Applied Clin Med Phys

View full text Add to dashboard Cite

Purpose To investigate the effect of different pitches and corresponding scan fields of view (SFOVs) on the image quality in the ultrafast, high‐pitch turbo FLASH mode of the third‐generation dual‐source CT using an anthropomorphic phantom. Methods The phantom was scanned using the ultrafast, high‐pitch turbo FLASH protocols of the third‐generation dual‐source CT with the different pitches and corresponding SFOVs (pitches: 1.55 to 3.2 with increments of 0.1, SFOVs: 50 cm to 35.4 cm). The objective parameters such as the CT number, image noises, signal‐to‐noise ratio (SNR), contrast‐to‐noise ratio (CNR), and artifacts index (AI), and image features from the head, chest, and abdomen were compared between the CT images with a pitch of 1.55 and SFOV of Ø 50 cm and a pitch of 3.2 and SFOV of Ø 35.4 cm. Then, the 18 series of CT images of the head, chest, and abdomen were evaluated by three radiologists independently. Results The differences in the CT numbers were not statically significant between the CT images with a pitch of 1.55 and SFOV of Ø 50 cm and a pitch of 3.2 and SFOV of Ø 35.4 cm from most body parts and potential combinations (p > 0.05), Most of the image noises and the AI from the images with the pitch of 1.55 were significantly lower than those with the pitch of 3.2 (p < 0.05), and the SNR and CNR from the images with the pitch of 1.55 were higher than those with the pitch of 3.2. There were significant differences in the first‐order features and texture features of the head (59.3%, 28.3%), chest (66%, 35.7%), and abdomen (71.6%, 64.7%) (p < 0.05). The subjective image quality was excellent when the pitch was less than 2.0 and gradually decreased with the increasing pitch. In addition, the image quality decreased significantly when the pitch was higher than 3.0 (all k≥0.69), especially in the head and chest. Conclusions In the ultrafast, high‐pitch turbo FLASH mode of the third‐generation DSCT, increasing the pitch and lowering the corresponding SFOV will change the image features and cause more artifacts degrading the image quality. Specific to the clinical needs, decreasing the pitch not only can expand the SFOV but also can improve the image quality.

show abstract

“…3 Compared with intraoperative measurement of the VSD defect, the size of the VSD tends to be underestimated by echocardiography due to partial occlusion of the herniated coronary cusp. 4 Cardiac computed tomography angiography can accurately demonstrate the location, phenotypic characteristics, size, and specific complications of a VSD in addition to associated cardiac and extra-cardiac malformation such as the coronary artery or great arteries, which is essential information for treatment planning.…”

mentioning

confidence: 99%

Multimodality Imaging in a Case of Muscular Outlet Ventricular Septal Defect With Aortic Regurgitation due to Right Sinus of Valsalva Aneurysm Herniation

Yoshihara

Yaegashi

Matsunaga

et al. 2022

Circ: Cardiovascular Imaging

View full text Add to dashboard Cite

Evaluation of ventricular septal defects using high pitch computed tomography angiography of the chest in children with complex congenital heart defects below one year of age

Cited by 8 publications

References 43 publications

Sensitivity of High-Pitch Dual-Source Computed Tomography for the Detection of Anomalous Pulmonary Venous Connection in Infants

Sensitivity of High-Pitch Dual-Source Computed Tomography for the Detection of Anomalous Pulmonary Venous Connection in Infants

The ultrafast, high‐pitch turbo FLASH mode of third‐generation dual‐source CT: Effect of different pitch and corresponding SFOV on image quality in a phantom study

Multimodality Imaging in a Case of Muscular Outlet Ventricular Septal Defect With Aortic Regurgitation due to Right Sinus of Valsalva Aneurysm Herniation

Contact Info

Product

Resources

About