Author + information
- Akanksha Thakkar,
- Ponraj Chinnadurai,
- Monteiro Gary,
- Alan Lumsden and
- C. Huie Lin
CTEPH lesion characterization using angiography is predictive of clinical outcome and complications in patients undergoing balloon pulmonary angioplasty. This study evaluates the value of Cone-beam CT imaging (CBCT) for CTEPH and compares its radiation exposure with biplane digital subtraction pulmonary angiography (PA-DSA).
Retrospective review of patients who underwent PA-DSA between Mar 2016 and May 2017 was performed. All procedures were performed using biplane angiographic system (Artis Q-zen® VD11B, Siemens Healthcare GmbH, Germany). CBCT was performed using a 5-second protocol (syngo DynaCT®, Siemens) after diluted iodinated contrast injection. Patient's BMI, imaging protocols, dose-area product (DAP) and skin dose data was collected.
Of 27 patients, 18 (67%) had lesions suggestive of CTEPH. 12/27 (44%) underwent CBCT in addition to PA-DSA. 8/12 (67%) who underwent CBCT demonstrated lesions suggestive of CTEPH. Median (range) BMI was 30.5 (18.7 - 54). Median DAP for pulmonary DSA vs CBCT was 3139 (589-7611) vs 2556 (1407 - 3894) micro-Gym2 respectively. Median (range) skin dose for pulmonary DSA vs CBCT was 235 (39-382) vs 142 (78 - 216) mGy respectively. During PA-DSA imaging, the lateral imaging plane contributed to 74% and 71% of DAP and skin dose respectively.
CBCT offers alternative imaging of pulmonary arteries in CTEPH evaluation and adds 3D cross-sectional data. Radiation doses are lower than bi-plane pulmonary angiography.
Poster Hall, Hall A/B
Saturday, March 10, 2018, 3:45 p.m.-4:30 p.m.
Session Title: Impacting the Management of Chronic Thromboembolic Pulmonary Hypertension
Abstract Category: 35. Pulmonary Hypertension and Venous Thrombo-Embolic Disease
Presentation Number: 1165-375
- 2018 American College of Cardiology Foundation