CT Angiography

Muenzel, Daniela; Fingerle, Alexander A.; Zahel, Tina; Sauter, Andreas; Vlassenbroek, Alain; Dobritz, Martin; Rummeny, Ernst J.; Noël, Peter B.

doi:10.1016/j.acra.2016.09.024

Cited by 4 publications

(3 citation statements)

References 30 publications

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“…TLLF patients are known to prone to APE because they have the three elements of Virchow for venous thrombosis (hypercoagulant state, vascular endothelial injury, and venous congestion) [ 20 ]. CTPA is the first-line examination method for the diagnosis of APE [ 12 , 21 ]. CTPA examination was used to diagnosis APE in this patient cohort.…”

Section: Discussionmentioning

confidence: 99%

Prognostic Risk Factors of 30-Day Death in Traumatic Lower Limb Fracture Patients with Acute Pulmonary Embolism: A Single-Center Retrospective Study

Wang

Zhang

et al. 2023

Canadian Respiratory Journal

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Background. To explore the prognostic risk factors of 30-day death in patients with traumatic lower limb fracture (TLLF) complicated with acute pulmonary embolism (APE). Methods. 295 consecutive TLLF patients diagnosed as APE according to pulmonary artery CT angiography, hospitalized in our hospital from January 2017 to December 2021, were included in this study. Patients were divided into nonsurvival group and survival group according to 30-day follow-up results. After adjusting age, sex, and all the clinical variables with P values of <0.2 with backward stepwise method (likelihood ratio), multivariate Cox regression analysis was used to analyze risk factors of 30 days all-cause death in TLLF patients with APE. The area under curve (AUC) calculated by receiver operating characteristic curve (ROC) and the incremental model were used to determine the prognostic potential of identified risk factors. Results. 29 patients died during 30-day follow-up. Simplified pulmonary embolism severity index (sPESI) score ≥1 ( P < 0.05 ), Wells score ≥7 ( P < 0.01 ), and pulmonary hypertension ( P < 0.01 ) were associated with higher risk, while anticoagulant therapy ( P < 0.01 ) was associated with lower risk of all-cause death during 30 days follow-up in APE patients. Compared with sPESI score, Wells score plus pulmonary hypertension produced better predictive efficacy. Prognostic value of sPESI score could be enhanced by adding Wells score, pulmonary hypertension, and anticoagulant therapy to the predicting models. Conclusions. Wells score ≥7 and pulmonary hypertension are independent predictive risk factors of 30-day all-cause death in TLLF patients with APE.

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Section: Discussionmentioning

confidence: 99%

Prognostic Risk Factors of 30-Day Death in Traumatic Lower Limb Fracture Patients with Acute Pulmonary Embolism: A Single-Center Retrospective Study

Wang

Zhang

et al. 2023

Canadian Respiratory Journal

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“…Kontrastmittel, sei es für die MRT oder die CT, dienen der Steigerung von Sensitivität und Spezifität radiologischer Untersuchungen. Sie sind unverzichtbar für viele Fragestellungen, insbesondere im onkologischen, neurologischen und kardiologischen Setting 4 5 6 .…”

Section: Introductionunclassified

“…Contrast agents in MRI and CT are used to increase the sensitivity and specificity of radiological examinations. They are essential for many medical issues, particularly in oncological, neurological, and cardiological settings [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Discharge of iodine-containing contrast media into the environment – problem analysis and implementation of measures to reduce discharge by means of separation toilets – experience from a pilot project

Beer,

Schuler,

Kraus

et al. 2023

Rofo

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Purpose Environmental aspects and sustainability are becoming increasingly important. In addition to energy consumption, the consumption and environmental discharge of contrast agents pose a particular challenge. Because of their desired stability, X-ray contrast agents (XCAs) are deposited in surface water at a rate of up to 400 tons per year. Materials and Methods In a pilot project, a set of measures (installation of specific separation toilets, the establishment of feedback systems, interviews, questionnaires, and observation) was implemented to sensitize patients and staff to the problem of XCAs during outpatient CT examinations and a retention and recovery system for XCAs was evaluated. Results In the initial baseline phase, a separation toilet with an additional collection system and a feedback/button system was installed. The built-in feedback system indicated that the separation toilets were used by approx. 16 % of patients without measures. In two subsequent intervention phases, accompanying measures significantly (p < 0.01) increased the use of these separation toilets to 21 % and 25 %, respectively. The measures to reduce the discharge of XCAs were positively assessed by both staff and patients. Conclusion Measures to reduce the discharge of XCAs into the environment have a high acceptance among staff and patients. The subsequent installation of separation toilets is one possibility to achieve on-site retention of XCAs. However, this measure is likely to be of high value only if patients stay on site for a correspondingly long time, as is the case in cardiology, for example. Key points: Citation Format

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Effects of Test-Bolus and Low-Dose Scan on Ct Pulmonary Angiography Image Quality in Patients With Different Body Mass Indexes

Liu

Zhao

et al. 2020

Radiation Protection Dosimetry

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This study aimed to investigate different methods of obtaining high-quality Computed Tomography pulmonary angiography (CTPA) images using low-dose scanning in patients with different body mass index (BMI) values. Sixty patients with suspected pulmonary embolism were grouped based on their BMI values (BMI < 25, designated N, and BMI ≥ 25, designated O) and were assigned to receive either test bolus (TB) or bolus tracking (BT) at conventional (C) or low (L) dose. The effective dose (ED) in the N–TB–L group was lower than in the group N–TB–C (0.56 ± 0.05 vs. 3.78 ± 1.16, p < 0.001), with similar image quality (4.90 ± 0.31 vs. 4.70 ± 0.47, p = 0.120). The ED in the O–TB–L group was lower than in the O–TB–C group (0.54 ± 0.03 vs. 5.14 ± 1.34, p < 0.001), but the group O–TB–C’s image quality was higher (4.65 ± 0.59 vs. 3.95 ± 0.89, p = 0.006). Groups N–TB–L versus O–TB–L, groups N-TB-L versus N–BT-L and groups O–TB–C versus O–BT–C had similar EDs (all ps > 0.05), but the image quality was different (all ps < 0.05). In conclusion, the results showed that the image quality of low-dose CTPA scanning using TB was similar to that of the conventional-dose CTPA in patients with BMI < 25 but was lower in patients with BMI ≥ 25. TB was better than BT for all patients, regardless of BMI, when receiving the same ED.

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CT Angiography

Cited by 4 publications

References 30 publications

Prognostic Risk Factors of 30-Day Death in Traumatic Lower Limb Fracture Patients with Acute Pulmonary Embolism: A Single-Center Retrospective Study

Prognostic Risk Factors of 30-Day Death in Traumatic Lower Limb Fracture Patients with Acute Pulmonary Embolism: A Single-Center Retrospective Study

Discharge of iodine-containing contrast media into the environment – problem analysis and implementation of measures to reduce discharge by means of separation toilets – experience from a pilot project

Effects of Test-Bolus and Low-Dose Scan on Ct Pulmonary Angiography Image Quality in Patients With Different Body Mass Indexes

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