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Wang Y, Liu F, Wu S, Sun K, Gu H, Wang X. CTA-Based Radiomics and Area Change Rate Predict Infrarenal Abdominal Aortic Aneurysms Patients Events: A Multicenter Study. Acad Radiol 2024; 31:3165-3176. [PMID: 38307789 DOI: 10.1016/j.acra.2024.01.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 01/08/2024] [Accepted: 01/08/2024] [Indexed: 02/04/2024]
Abstract
RATIONALE AND OBJECTIVES Clinical assessment of abdominal aortic aneurysm (AAA) intervention and rupture risk relies primarily on maximum diameter, but studies have shown that sole dependence on diameter has limitations. CTA-based radiomics, aneurysm and lumen area change rates (AACR, LACR) are measured to predict potential AAA events. MATERIALS AND METHODS Between January 2017 and November 2022, 260 AAA patients from four centers who underwent two preoperative CTA examinations were included in this retrospective study. The endpoint event is defined as AAA rupture or repair. Patients were categorized into event and no-event groups based on the occurrence of endpoint event during follow-up. AACR and LACR were assessed using baseline and follow-up CTA, with radiomics features extracted from the baseline images. C-statistics and the Kaplan-Meier analysis were used to evaluate the predictive performance. RESULTS A total of 193 eligible infrarenal AAA patients were included, 176 (91.2%) were man and 17 (8.8%) were woman. The median follow-up was 33.4 (14.2, 57.4) months. Seven models were constructed, comprising the aneurysm-based Radscore model, lumen-based Radscore model, intraluminal thrombus (ILT)-based Radscore model, AACR model, LACR model, clinical model (including high-density lipoprotein, D-dimer, and baseline aneurysm diameter), and a merged model. On the external validation set, the C-index of seven models were 0.713 (0.574-0.853), 0.642 (0.499-0.786), 0.727 (0.600-0.854), 0.619 (0.484-0.753), 0.680 (0.530-0.830), 0.690 (0.557-0.824) and 0.760 (0.651-0.869), in that order. In the Kaplan-Meier analysis, the merged model was best-divided patients into high/low-risk groups with Log-rank p < 0.0001. The AARC and LARC between non-event and event groups have significant differences (AACR: 1.4 cm2/y vs. 2.3 cm2/y, p < 0.0001; LACR: 0.3 cm2/y vs. 1.1 cm2/y, p < 0.0001). CONCLUSION CTA-based radiomics, AACR and LACR have good predictive value for outcome event in infrarenal AAA patients.
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Affiliation(s)
- Ying Wang
- Department of Radiology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jing Wu Road, No. 324, Jinan 250021, China; School of Radiology, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian 271016, China
| | - Fangyuan Liu
- Department of Radiology, Shandong Provincial Hospital, Shandong University, Jing Wu Road, No. 324, Jinan 250021, China
| | - Siyu Wu
- Department of Radiology, Shandong Provincial Hospital, Shandong University, Jing Wu Road, No. 324, Jinan 250021, China
| | - Kui Sun
- Department of General Surgery, Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing 100191, China.
| | - Hui Gu
- Department of Radiology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jing Wu Road, No. 324, Jinan 250021, China.
| | - Ximing Wang
- Department of Radiology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jing Wu Road, No. 324, Jinan 250021, China.
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Ozawa H, Takahashi A, Bessho R, Hoshina K, Shukuzawa K, Ohki T. Saccular and Fusiform Abdominal Aortic Aneurysms Treated With Endovascular Repair Differ in Presentation and Treatment Threshold: Analyses Using a National Clinical Database in Japan. J Am Heart Assoc 2024; 13:e032715. [PMID: 38780177 PMCID: PMC11255613 DOI: 10.1161/jaha.123.032715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Accepted: 03/13/2024] [Indexed: 05/25/2024]
Abstract
BACKGROUND Saccular abdominal aortic aneurysms (AAAs) are considered to be at higher risk of rupture than fusiform AAAs, but not much is known about the extent of this risk. Therefore, this study aimed to compare the rupture presentation between fusiform and saccular AAAs. METHODS AND RESULTS This is a retrospective cohort study on 27 290 patients who underwent primary endovascular repair for a degenerative AAA between 2016 and 2019, and who were registered in the National Clinical Database in Japan. At operation for nonruptured case, the aneurysm diameter was significantly smaller in saccular AAAs than in fusiform AAAs (median, 44.0 versus 51.0 mm; P<0.001). Similarly, aneurysm diameter at rupture was significantly smaller in saccular AAAs than in fusiform AAAs (median, 55.6 versus 68.0 mm; P<0.001). The likelihood of repair for rupture was significantly higher in saccular AAAs than in fusiform AAAs in the 40- to 54-mm diameter range, in which saccular morphology was found to be an independent risk factor for rupture against fusiform morphology by adjusting for sex and aneurysm diameter (odds ratio, 2.54 [95% CI, 1.75-3.69]). In addition, receiver-operating characteristic curve analysis revealed that the cutoff diameter to predict rupture was smaller in saccular AAAs than in fusiform AAAs (50.5 and 59.5 mm, respectively) based on the Youden index. CONCLUSIONS Saccular AAAs presented at smaller diameters than fusiform AAAs in patients with ruptured AAAs treated with endovascular aortic repair, which supports the idea that saccular AAAs should be treated at smaller diameters.
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Affiliation(s)
- Hirotsugu Ozawa
- Division of Vascular Surgery, Department of SurgeryThe Jikei University School of MedicineTokyoJapan
- Japanese Society for Vascular SurgeryTokyoJapan
| | - Arata Takahashi
- Department of Health Policy and Management, School of MedicineKeio UniversityTokyoJapan
- Department of Healthcare Quality Assessment, Graduate School of MedicineThe University of TokyoTokyoJapan
| | - Ryuzo Bessho
- Department of Cardiovascular SurgeryNippon Medical School, Chiba Hokusoh HospitalChibaJapan
| | - Katsuyuki Hoshina
- Department of Vascular Surgery, Graduate School of MedicineThe University of TokyoTokyoJapan
- Japanese Committee for Stentgraft ManagementTokyoJapan
| | - Kota Shukuzawa
- Division of Vascular Surgery, Department of SurgeryThe Jikei University School of MedicineTokyoJapan
| | - Takao Ohki
- Division of Vascular Surgery, Department of SurgeryThe Jikei University School of MedicineTokyoJapan
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Spath P, Campana F, Gallitto E, Pini R, Mascoli C, Sufali G, Caputo S, Sonetto A, Faggioli G, Gargiulo M. Impact of iliac access in elective and non-elective endovascular repair of abdominal aortic aneurysm. THE JOURNAL OF CARDIOVASCULAR SURGERY 2024; 65:85-98. [PMID: 38635284 DOI: 10.23736/s0021-9509.24.12987-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/19/2024]
Abstract
Endovascular aortic repair (EVAR) is nowadays the establishment treatment for patients with abdominal aortic aneurysm (AAA) both in elective and urgent setting. Despite the large applicability and satisfactory results, the presence of hostile iliac anatomy affects both technical and clinical success. This narrative review aimed to report the impact of iliac access and related adjunctive procedures in patients undergoing EVAR in elective and non-elective setting. Hostile iliac access can be defined in presence of narrowed, tortuous, calcified, or occluded iliac arteries. These iliac characteristics can be graded by the anatomic severity grade score to quantitatively assess anatomic complexity before undergoing treatment. Literature shows that iliac hostility has an impact on device navigability, insertion and perioperative and postoperative results. Overall, it has been correlated to higher rate of access issues, representing up to 30% of the first published EVAR experience. Recent innovations with low-profile endografts have reduced large-bore sheaths related issues. However, iliac-related complications still represent an issue, and several adjunctive endovascular and surgical strategies are nowadays available to overcome these complications during EVAR. In urgent settings iliac hostility can significantly impact on particular time sensitive procedures. Moreover, in case of severe hostility patients might be written off for EVAR repair might be inapplicable, exposing to higher mortality/morbidity risk in this urgent/emergent setting. In conclusion, an accurate anatomical evaluation of iliac arteries during preoperative planning, materials availability, and skilled preparation to face iliac-related issues are crucial to address these challenges.
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Affiliation(s)
- Paolo Spath
- Unit of Vascular Surgery, Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy -
- Unit of Vascular Surgery, Infermi Hospital, AUSL Romagna, Rimini, Italy -
| | - Federica Campana
- Unit of Vascular Surgery, Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Enrico Gallitto
- Unit of Vascular Surgery, Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
- Unit of Vascular Surgery, IRCCS University Hospital S. Orsola, Bologna, Italy
| | - Rodolfo Pini
- Unit of Vascular Surgery, Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
- Unit of Vascular Surgery, IRCCS University Hospital S. Orsola, Bologna, Italy
| | - Chiara Mascoli
- Unit of Vascular Surgery, IRCCS University Hospital S. Orsola, Bologna, Italy
| | - Gemmi Sufali
- Unit of Vascular Surgery, Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Stefania Caputo
- Unit of Vascular Surgery, Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Alessia Sonetto
- Unit of Vascular Surgery, IRCCS University Hospital S. Orsola, Bologna, Italy
| | - Gianluca Faggioli
- Unit of Vascular Surgery, Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
- Unit of Vascular Surgery, IRCCS University Hospital S. Orsola, Bologna, Italy
| | - Mauro Gargiulo
- Unit of Vascular Surgery, Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
- Unit of Vascular Surgery, IRCCS University Hospital S. Orsola, Bologna, Italy
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Akkoyun E, Gharahi H, Kwon ST, Zambrano BA, Rao A, Acar AC, Lee W, Baek S. Defining a master curve of abdominal aortic aneurysm growth and its potential utility of clinical management. COMPUTER METHODS AND PROGRAMS IN BIOMEDICINE 2021; 208:106256. [PMID: 34242864 PMCID: PMC8364512 DOI: 10.1016/j.cmpb.2021.106256] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Accepted: 06/18/2021] [Indexed: 06/13/2023]
Abstract
OBJECTIVE The maximum diameter measurement of an abdominal aortic aneurysm (AAA), which depends on orthogonal and axial cross-sections or maximally inscribed spheres within the AAA, plays a significant role in the clinical decision making process. This study aims to build a total of 21 morphological parameters from longitudinal CT scans and analyze their correlations. Furthermore, this work explores the existence of a "master curve" of AAA growth, and tests which parameters serve to enhance its predictability for clinical use. METHODS 106 CT scan images from 25 Korean AAA patients were retrospectively obtained. We subsequently computed morphological parameters, growth rates, and pair-wise correlations, and attempted to enhance the predictability of the growth for high-risk aneurysms using non-linear curve fitting and least-square minimization. RESULTS An exponential AAA growth model was fitted to the maximum spherical diameter, as the best representative of the growth among all parameters (r-square: 0.94) and correctly predicted to 15 of 16 validation scans based on a 95% confidence interval. AAA volume expansion rates were highly correlated (r=0.75) with thrombus accumulation rates. CONCLUSIONS The exponential growth model using spherical diameter provides useful information about progression of aneurysm size and enables AAA growth rate extrapolation during a given surveillance period.
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Affiliation(s)
- Emrah Akkoyun
- Department of Health Informatics, Graduate School of Informatics, Middle East Technical University, Dumlupinar Bulvari #1, 06800 Cankaya, Ankara, Turkey
| | - Hamidreza Gharahi
- Department of Mechanical Engineering, Michigan State University, 2457 Engineering Building, East Lansing, MI 48824, USA
| | - Sebastian T Kwon
- Department of Anesthesiology and Perioperative Medicine, UCLA David Geffen School of Medicine, 757 Westwood Blvd., Los Angeles, CA 90095, USA
| | - Byron A Zambrano
- Department of Mechanical Engineering, Michigan State University, 2457 Engineering Building, East Lansing, MI 48824, USA
| | - Akshay Rao
- Department of Mechanical Engineering, Michigan State University, 2457 Engineering Building, East Lansing, MI 48824, USA
| | - Aybar C Acar
- Department of Health Informatics, Graduate School of Informatics, Middle East Technical University, Dumlupinar Bulvari #1, 06800 Cankaya, Ankara, Turkey
| | - Whal Lee
- Department of Radiology, Seoul National University Hospital, 101 Daehangno, Jongno-gu, Seoul, Republic of Korea
| | - Seungik Baek
- Department of Mechanical Engineering, Michigan State University, 2457 Engineering Building, East Lansing, MI 48824, USA.
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