scholarly journals ImageTBAD: A 3D Computed Tomography Angiography Image Dataset for Automatic Segmentation of Type-B Aortic Dissection

2021 ◽  
Vol 12 ◽  
Author(s):  
Zeyang Yao ◽  
Wen Xie ◽  
Jiawei Zhang ◽  
Yuhao Dong ◽  
Hailong Qiu ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Aortic Dissection ◽  
Computed Tomography Angiography ◽  
Automatic Segmentation ◽  
False Lumen ◽  
Type B ◽  
Type B Aortic Dissection ◽  
Baseline Method ◽  
Irregular Shapes ◽  
Image Dataset

Type-B Aortic Dissection (TBAD) is one of the most serious cardiovascular events characterized by a growing yearly incidence, and the severity of disease prognosis. Currently, computed tomography angiography (CTA) has been widely adopted for the diagnosis and prognosis of TBAD. Accurate segmentation of true lumen (TL), false lumen (FL), and false lumen thrombus (FLT) in CTA are crucial for the precise quantification of anatomical features. However, existing works only focus on only TL and FL without considering FLT. In this paper, we propose ImageTBAD, the first 3D computed tomography angiography (CTA) image dataset of TBAD with annotation of TL, FL, and FLT. The proposed dataset contains 100 TBAD CTA images, which is of decent size compared with existing medical imaging datasets. As FLT can appear almost anywhere along the aorta with irregular shapes, segmentation of FLT presents a wide class of segmentation problems where targets exist in a variety of positions with irregular shapes. We further propose a baseline method for automatic segmentation of TBAD. Results show that the baseline method can achieve comparable results with existing works on aorta and TL segmentation. However, the segmentation accuracy of FLT is only 52%, which leaves large room for improvement and also shows the challenge of our dataset. To facilitate further research on this challenging problem, our dataset and codes are released to the public (Dataset, 2020).

scholarly journals Candy-plug technique for ruptured chronic type B aortic dissection

2019 ◽  
Vol 27 (9) ◽  
pp. 770-772
Author(s):  
Akimasa Morisaki ◽  
Etsuji Sohgawa ◽  
Noriaki Kishimoto ◽  
Kokoro Yamane ◽  
Toshihiko Shibata
Keyword(s):  
Computed Tomography ◽  
Aortic Dissection ◽  
Endovascular Repair ◽  
Computed Tomography Angiography ◽  
False Lumen ◽  
Type B ◽  
Type B Aortic Dissection ◽  
Chronic Type ◽  
Descending Aorta ◽  
Mediastinal Hematoma

Ruptured chronic type B aortic dissection is conventionally repaired surgically; however, the mortality is high. We report successful use of the candy-plug technique for ruptured chronic type B aortic dissection. A 62-year-old man with ruptured type IIIb dissection was transferred to our hospital as an emergency. Computed tomography angiography showed a dissecting aorta with a patent false lumen, ruptured proximal descending aorta, distal aortic arch entry, and mediastinal hematoma. Debranching endovascular repair with the candy-plug technique achieved occlusion of the false lumen of the ruptured aortic dissection. The patient recovered uneventfully and the false lumen gradually decreased with no endoleak.

scholarly journals Staged coil embolization after thoracic endovascular stent grafting for aneurysmal chronic type B aortic dissection: A case report

2019 ◽  
Vol 7 ◽  
pp. 2050313X1982890
Author(s):  
Takuya Nakayama ◽  
Koji Hattori ◽  
Takuya Hashizume ◽  
Miki Asano
Keyword(s):  
Computed Tomography ◽  
Aortic Dissection ◽  
Coil Embolization ◽  
False Lumen ◽  
Thoracic Endovascular Aortic Repair ◽  
Endovascular Aortic Repair ◽  
Type B ◽  
Type B Aortic Dissection ◽  
Chronic Type ◽  
Aortic Repair

We herein describe a 38-year-old woman with Marfan syndrome and chronic type A aortic dissection. Computed tomography showed that the sinus of Valsalva and thoracoabdominal aorta had a diameter of 62 and 55 mm, respectively. After 7 months of a Bentall operation and total arch replacement with the elephant trunk technique, we performed thoracic endovascular aortic repair for an aneurysm of the descending aorta, but we preserved the retrograde flow into the false lumen because it supplied vessels perfusing the spinal cord. Computed tomography angiography 14 months after thoracic endovascular aortic repair showed that the thoracic aortic diameter had increased to 68 mm. We then performed partial (proximal only) coil embolization of the false lumen. After 6 months, the thoracic aortic diameter had decreased to 60 mm and the spinal cord remained perfused via the distal false lumen. Staged coil embolization after thoracic endovascular aortic repair for aneurysmal chronic type B aortic dissection is feasible and can be beneficial.

Management of Residual False Lumen Flow After Thoracic Endovascular Repair in Chronic Type B Aortic Dissection

2020 ◽  
Vol 04 (05) ◽  
Author(s):  
Hervé Rousseau ◽  
Paul Revel-Mouroz ◽  
Charline Zadro ◽  
Camille Dambrin ◽  
Christophe Cron ◽  
...  
Keyword(s):  
Aortic Dissection ◽  
Endovascular Repair ◽  
False Lumen ◽  
Type B ◽  
Type B Aortic Dissection ◽  
Chronic Type ◽  
Thoracic Endovascular Repair

Spinal Cord Ischemia in the Setting of Acute Type B Aortic Dissection: Successful Rescue with Thoracic Endovascular Aortic Repair

2021 ◽  
pp. 153857442110451
Author(s):  
Masaki Kano ◽  
Toru Iwahashi ◽  
Toshiya Nishibe ◽  
Kentaro Kamiya ◽  
Hitoshi Ogino
Keyword(s):  
Spinal Cord ◽  
Aortic Dissection ◽  
Medical Management ◽  
Spinal Cord Ischemia ◽  
False Lumen ◽  
Thoracic Endovascular Aortic Repair ◽  
Endovascular Aortic Repair ◽  
Acute Type ◽  
Type B ◽  
Type B Aortic Dissection

We report 2 cases of successful thoracic endovascular aortic repair (TEVAR) for acute type B aortic dissection (ABAD) complicated with spinal cord ischemia (SCI). Case 1. A 70-year-old gentleman found with an uncomplicated ABAD with false lumen occluded, developed SCI shortly after admission during the initial medical management. Cerebrospinal fluid drainage (CSFD) was initiated followed by emergent TEVAR. SCI improved, and the patient was discharged. Case 2. A 52-year-old gentleman developed uncomplicated ABAD with patent false lumen. 5 hours after admission, he developed SCI during the initial medical management. Emergent TEVAR was performed followed by CSFD, and the SCI improved before discharge. These cases prompted us to address prompt TEVAR for primary entry closure and true lumen dilatation with postoperative hypertensive management to relieve the dynamic obstruction of the segmental arteries responsible for the compromised spinal cord circulation in complicated ABAD.

Safety and Effectiveness of TEVAR in Native Proximal Landing Zone 2 for Chronic Type B Aortic Dissection in Patients With Genetic Aortic Syndrome

2021 ◽  
pp. 152660282110612
Author(s):  
Ahmed Eleshra ◽  
Giuseppe Panuccio ◽  
Konstantinos Spanos ◽  
Fiona Rohlffs ◽  
Yskert von Kodolitsch ◽  
...  
Keyword(s):  
Aortic Dissection ◽  
False Lumen ◽  
Thoracic Endovascular Aortic Repair ◽  
Endovascular Aortic Repair ◽  
Type B ◽  
Type B Aortic Dissection ◽  
Chronic Type ◽  
Ehlers Danlos Syndrome ◽  
Landing Zone ◽  
Aortic Repair

Objectives The aim of this study is to report the safety and effectiveness of thoracic endovascular aortic repair (TEVAR) in a native proximal landing zone (PLZ) 2 for chronic type B aortic dissection (TBAD) patients with genetic aortic syndrome (GAS). Methods A retrospective review of a single center database to identify patients with GAS treated with TEVAR in native PLZ 2 for chronic TBAD and thoracic false lumen aneurysm between February 2012 and February 2018 was undertaken. Results In total, 31 patients with GAS (24 Marfan syndrome [MFS], 5 Loeys-Dietz syndrome [LDS], and 2 vascular Ehlers-Danlos syndrome [vEDS]) were treated by endovascular repair. Nineteen patients were treated by TEVAR as index procedures with 8 patients (5 females, mean age = 55, range = 36–79 years old) receiving TEVAR in native PLZ 2. Left subclavian artery (LSA) perfusion was preserved in all 8 patients: by left common carotid artery-LSA bypass in 6 patients, chimney stenting of the LSA in 1 patient, and partial coverage of LSA ostium in 1 patient. Technical success was achieved in all patients (100%). There was no 30 day mortality (0%). The 30 day morbidity (0%) was free from major complications. The median follow-up was 40 months (range = 7–79). One patient died due to non-aortic-related cause. Native PLZ 2 was free from complications in MFS patients (5/8). Two patients with LDS developed type Ia endoleak with aneurysmal progression. One patient was treated by proximal extension with a double inner branched arch stent-graft landing in the replaced ascending aorta. The other one was treated with frozen elephant trunk. Conclusion Thoracic endovascular aortic repair in native PLZ 2 was safe and effective with no early or midterm PLZ complications in patients with MFS with chronic TBAD in this limited series. Native PLZ 2 is not safe in patients with LDS and should only be used in emergencies as a bridging to open repair.

Flow Diversion: A Novel Technique In The Management Of Aneurysmal False Lumen In Chronic Type B Aortic Dissection

2020 ◽  
Vol 63 ◽  
pp. 10-11
Author(s):  
Motahar Hosseini ◽  
David N. Blitzer ◽  
Anahita Ghazi ◽  
Shahab Toursavadkohi
Keyword(s):  
Aortic Dissection ◽  
False Lumen ◽  
Flow Diversion ◽  
Type B ◽  
Type B Aortic Dissection ◽  
Chronic Type ◽  
Novel Technique

Computed tomography findings and in-hospital mortality in patients with rupture of type B aortic dissection

2019 ◽  
Vol 61 (1) ◽  
pp. 136-144
Author(s):  
Tetsuhiro Otsuka ◽  
Eijun Sueyoshi ◽  
Yutaro Tasaki ◽  
Masataka Uetani
Keyword(s):  
Computed Tomography ◽  
Aortic Dissection ◽  
Hospital Mortality ◽  
Female Gender ◽  
Pleural Space ◽  
Hazard Ratio ◽  
Maximum Diameter ◽  
Type B ◽  
Type B Aortic Dissection ◽  
Ct Findings

Background The relationships between the computed tomography (CT) findings and outcomes of patients with ruptured type B aortic dissection have not been clarified. Purpose To evaluate the initial CT findings of patients with ruptured type B aortic dissection and investigate the relationships between the initial CT findings and in-hospital mortality. Material and Methods This study was approved by the institutional review board. Thirty-three patients were diagnosed with ruptured Stanford type B aortic dissection at our hospital between 2007 and 2016 (21 men, 12 women; mean age = 76.1±10.7 years). We retrospectively evaluated the initial CT findings of ruptured type B aortic dissection and the relationships between clinical factors and in-hospital mortality using logistic regression analysis. Results Type B aortic dissections ruptured in the acute and chronic phases in 23 and 10 patients, respectively. The initial CT images showed various findings, including an open false lumen (58%), arch involvement (88%), hematomas in the pleural space (55%), hematomas in the pericardial space (18%), and the extravasation of vascular contrast material (12%). The mean maximum diameter of the affected aorta was 49.5 ± 16.1 mm. Among the 33 patients, 14 died at hospital. Female gender (hazard ratio = 10.284; 95% confidence interval [CI] = 1.61–65.54; P = 0.0136) and the presence of a hematoma in the pleural space (hazard ratio = 6.803; 95% CI = 1.07–43.24; P = 0.0421) were found to be predictors of in-hospital mortality. Conclusion Female gender and the presence of a hematoma in the pleural space are significant predictors of in-hospital mortality in patients with ruptured type B aortic dissection.

scholarly journals False lumen ejection fraction predicts growth in type B aortic dissection: preliminary results

2019 ◽  
Vol 57 (5) ◽  
pp. 896-903 ◽  
Author(s):  
Nicholas S Burris ◽  
David A Nordsletten ◽  
Julio A Sotelo ◽  
Ross Grogan-Kaylor ◽  
Ignas B Houben ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Growth Rate ◽  
Magnetic Resonance ◽  
Aortic Dissection ◽  
Ejection Fraction ◽  
Flow Rate ◽  
False Lumen ◽  
Type B ◽  
Type B Aortic Dissection ◽  
4D Flow

Abstract OBJECTIVES Current risk assessment strategies in type B aortic dissection are focused on anatomic parameters, although haemodynamic abnormalities that result in false lumen (FL) pressurization are thought to play a significant role in aortic growth. The objective of this study was to evaluate blood flow of the FL using 4D flow magnetic resonance imaging (MRI) and identify haemodynamic and anatomic factors that independently predict the rate of aortic growth. METHODS Patients with dissection of the descending thoraco-abdominal aorta (n = 18) were enrolled in a prospective observational study and underwent 4D flow MRI for haemodynamic assessment of the entry tear and FL. Anatomic parameters were obtained by magnetic resonance angiography and baseline computed tomography. False lumen ejection fraction (FL EF) was defined the ratio of retrograde flow rate at the dominant entry tear during diastole over the antegrade systolic flow rate. RESULTS The median aortic growth rate was 3.5 mm/year (interquartile range 0.5–8.1 mm/year). Entry tear peak velocity was lower in patients with enlarging aortic dimensions (95.5 ± 24.1 vs 128.1 ± 37.4 cm/s, P = 0.039). After adjusting for co-variates FL EF (β = 0.15, P = 0.004), baseline maximal aortic diameter (β = 0.37, P = 0.001) and the entry tear distance from the left subclavian artery (β = 0.07, P = 0.016) were significant predictors of aortic growth rate. CONCLUSIONS Beyond standard anatomic risk factors, FL EF is an independent predictor of aortic growth rate and may represent an intuitive, non-invasive method to estimate FL pressurization and improve patient-specific risk assessment in patients with type B aortic dissection.

Management of a Compromised Frozen Elephant Trunk Due to Acute Type B Aortic Dissection

2020 ◽  
Vol 54 (8) ◽  
pp. 756-759
Author(s):  
Amer Harky ◽  
Robert K. Fisher ◽  
Mark L. Field
Keyword(s):  
Aortic Valve ◽  
Aortic Dissection ◽  
False Lumen ◽  
Acute Type ◽  
Type B ◽  
Frozen Elephant Trunk ◽  
Type B Aortic Dissection ◽  
Elephant Trunk ◽  
Thoracoabdominal Aorta

Purpose: To report a case who required a thoracic endovascular stenting (TEVAR) following the deployment of frozen elephant trunk due to false lumen expansion Case Report: A 47 years old male patient undergone emergency repair of acute type A aortic dissection in 2011 with bioprosthetic aortic root conduit. Seven years later he presented with moderate aortic valve disease and expanding chronic dissection of the aortic arch, therefore a redo operation with replacement of the prosthetic aortic valve, ascending aorta, total arch and deployment of frozen elephant trunk and he was discharged in good health. Several days post discharge he presented with new onset of chest pain and a new dissection involved the thoracoabdominal aorta was noted pressing on the true lumen and the frozen elephant trunk. Following a multi-disciplinary team meeting, TEVAR was deemed as a most appropriate approach and this was achieved successfully, and patient was discharged. At 1 year of follow up, he remains well and asymptomatic. Conclusion: Close imaging follow-up following deployment of a FET is mandatory. A new acute Type B aortic dissection distal to the FET, that causes false lumen propagation parallel to the stented portion, is a surgical emergency and further intervention mandated.

How to Exclude the Dilated False Lumen in Patients after a Type B Aortic Dissection? The Cork in the Bottleneck

2003 ◽  
Vol 10 (2) ◽  
pp. 244-248 ◽  
Author(s):  
Maartje C. Loubert ◽  
Victor P.M. van der Hulst ◽  
Cees De Vries ◽  
Kees Bloemendaal ◽  
Anco C. Vahl
Keyword(s):  
Aortic Dissection ◽  
Stent Graft ◽  
Case Reports ◽  
False Lumen ◽  
Type B ◽  
Type B Aortic Dissection ◽  
Type B Dissection ◽  
Occluder Device ◽  
Stent Graft Implantation ◽  
Graft Implantation

Purpose: To report techniques for excluding the dilated false lumen associated with chronic type B aortic dissection following placement of a stent-graft in the true lumen. Case Reports: Two patients underwent stent-graft implantation for a dilated false lumen after chronic aortic dissection, but the false lumen was not excluded from the circulation by this procedure. The false lumen was obliterated in one case with Greenfield filters and detachable balloons placed above a renal artery orifice that was perfused via the false lumen. This acted like “a cork in the bottleneck” to block retrograde flow into the thoracic portion of the false lumen above the blockade. In the other patient, an occluder device was used as the “cork.” In both cases, a good result was obtained. The occluder device is preferred because deployment is more controllable. Conclusions: An occluder device may be used like a cork in a bottle to exclude the dilated false lumen in the thoracic aorta after a type B dissection.

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