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  1. Article: IR management of portal hypertension complications.

    Gogna, Apoorva / Tan, Hiang Keat / Too, Chow Wei / Chang Pik Eu, Jason

    Clinical liver disease

    2023  Volume 22, Issue 2, Page(s) 75–79

    Language English
    Publishing date 2023-09-02
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2657644-2
    ISSN 2046-2484
    ISSN 2046-2484
    DOI 10.1097/CLD.0000000000000077
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  2. Article ; Online: Iatrogenic thyroid pseudoaneurysm following thyroid nodule radiofrequency ablation.

    Appaduray, Shaun Previn / Too, Chow Wei

    BMJ case reports

    2020  Volume 13, Issue 5

    Abstract: A 54-year-old Chinese woman presented for radiofrequency ablation (RFA) of benign thyroid nodules. A few hours after the procedure, the patient developed neck swelling and tenderness. Doppler ultrasound (US) images of the neck revealed haematoma with a ... ...

    Abstract A 54-year-old Chinese woman presented for radiofrequency ablation (RFA) of benign thyroid nodules. A few hours after the procedure, the patient developed neck swelling and tenderness. Doppler ultrasound (US) images of the neck revealed haematoma with a vascular hypoechoic mass at the RFA site, suspicious for pseudoaneurysm. These findings were confirmed on subsequent on-table fluoroscopy following direct US-guided needle puncture and injection of contrast, demonstrating opacification of the mass and extravasation. Successful occlusion of the pseudoaneurysm was performed using US-guided thrombin injection. The patient made a good recovery with follow-up US 1 month later showing no recurrence of haematoma or pseudoaneurysm.
    MeSH term(s) Aneurysm, False/drug therapy ; Aneurysm, False/etiology ; Female ; Hemostatics/therapeutic use ; Humans ; Iatrogenic Disease ; Injections ; Middle Aged ; Radiofrequency Ablation/adverse effects ; Thrombin/therapeutic use ; Thyroid Nodule/surgery
    Chemical Substances Hemostatics ; Thrombin (EC 3.4.21.5)
    Language English
    Publishing date 2020-05-06
    Publishing country England
    Document type Case Reports ; Journal Article
    ISSN 1757-790X
    ISSN (online) 1757-790X
    DOI 10.1136/bcr-2020-234784
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: The European Society of Musculoskeletal Radiology (ESSR) Consensus Papers on Image-Guided Interventional Procedures in the Musculoskeletal System: What are the Opportunities for Interventional Radiologists?

    Tan, Alexander Sheng Ming / Sheah, Kenneth / Leong, Sum / Too, Chow Wei

    Cardiovascular and interventional radiology

    2022  Volume 45, Issue 8, Page(s) 1232–1233

    MeSH term(s) Consensus ; Humans ; Musculoskeletal System ; Radiography ; Radiologists ; Radiology ; Radiology, Interventional
    Language English
    Publishing date 2022-06-14
    Publishing country United States
    Document type Editorial
    ZDB-ID 603082-8
    ISSN 1432-086X ; 0342-7196 ; 0174-1551
    ISSN (online) 1432-086X
    ISSN 0342-7196 ; 0174-1551
    DOI 10.1007/s00270-022-03175-2
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    In stock of ZB MED Cologne/Königswinter

    Zs.A 1378: Show issues Location:
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  4. Article: Embolisation of large pulmonary artery pseudoaneurysm with conservative treatment of delayed coil extrusion.

    Elangovan, Sakktivel / Too, Chow Wei

    Singapore medical journal

    2019  Volume 61, Issue 3, Page(s) 162–164

    MeSH term(s) Aged ; Aneurysm, False/diagnostic imaging ; Aneurysm, False/surgery ; China/ethnology ; Conservative Treatment ; Embolization, Therapeutic/methods ; Humans ; Male ; Pulmonary Artery/surgery ; Treatment Outcome
    Language English
    Publishing date 2019-07-22
    Publishing country Singapore
    Document type Case Reports ; Journal Article
    ZDB-ID 604319-7
    ISSN 0037-5675
    ISSN 0037-5675
    DOI 10.11622/smedj.2020031
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    Zs.B 589: Show issues Location:
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  5. Article ; Online: Artificial Intelligence-Guided Segmentation and Path Planning Software for Transthoracic Lung Biopsy.

    Too, Chow Wei / Fong, Khi Yung / Hang, Guanqi / Sato, Takafumi / Nyam, Chiaw Qing / Leong, Siang Huei / Ng, Ka Wei / Ng, Wei Lin / Kawai, Tatsuya

    Journal of vascular and interventional radiology : JVIR

    2024  Volume 35, Issue 5, Page(s) 780–789.e1

    Abstract: Purpose: To validate the sensitivity and specificity of a 3-dimensional (3D) convolutional neural network (CNN) artificial intelligence (AI) software for lung lesion detection and to establish concordance between AI-generated needle paths and those used ...

    Abstract Purpose: To validate the sensitivity and specificity of a 3-dimensional (3D) convolutional neural network (CNN) artificial intelligence (AI) software for lung lesion detection and to establish concordance between AI-generated needle paths and those used in actual biopsy procedures.
    Materials and methods: This was a retrospective study using computed tomography (CT) scans from 3 hospitals. Inclusion criteria were scans with 1-5 nodules of diameter ≥5 mm; exclusion criteria were poor-quality scans or those with nodules measuring <5mm in diameter. In the lesion detection phase, 2,147 nodules from 219 scans were used to develop and train the deep learning 3D-CNN to detect lesions. The 3D-CNN was validated with 235 scans (354 lesions) for sensitivity, specificity, and area under the receiver operating characteristic curve (AUC) analysis. In the path planning phase, Bayesian optimization was used to propose possible needle trajectories for lesion biopsy while avoiding vital structures. Software-proposed needle trajectories were compared with actual biopsy path trajectories from intraprocedural CT scans in 150 patients, with a match defined as an angular deviation of <5° between the 2 trajectories.
    Results: The model achieved an overall AUC of 97.4% (95% CI, 96.3%-98.2%) for lesion detection, with mean sensitivity of 93.5% and mean specificity of 93.2%. Among the software-proposed needle trajectories, 85.3% were feasible, with 82% matching actual paths and similar performance between supine and prone/oblique patient orientations (P = .311). The mean angular deviation between matching trajectories was 2.30° (SD ± 1.22); the mean path deviation was 2.94 mm (SD ± 1.60).
    Conclusions: Segmentation, lesion detection, and path planning for CT-guided lung biopsy using an AI-guided software showed promising results. Future integration with automated robotic systems may pave the way toward fully automated biopsy procedures.
    MeSH term(s) Humans ; Retrospective Studies ; Reproducibility of Results ; Predictive Value of Tests ; Image-Guided Biopsy/methods ; Deep Learning ; Female ; Male ; Tomography, X-Ray Computed ; Software ; Middle Aged ; Lung Neoplasms/pathology ; Lung Neoplasms/diagnostic imaging ; Aged ; Radiographic Image Interpretation, Computer-Assisted ; Bayes Theorem ; Biopsy, Needle ; Lung/diagnostic imaging ; Lung/pathology
    Language English
    Publishing date 2024-02-12
    Publishing country United States
    Document type Journal Article ; Validation Study ; Multicenter Study
    ZDB-ID 1137756-2
    ISSN 1535-7732 ; 1051-0443
    ISSN (online) 1535-7732
    ISSN 1051-0443
    DOI 10.1016/j.jvir.2024.02.006
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    In stock of ZB MED Cologne/Königswinter

    Zs.A 3720: Show issues Location:
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    Jg. 1995 - 2021: Lesesall (2.OG)
    ab Jg. 2022: Lesesaal (EG)

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  6. Article ; Online: The Role of Drug-Coated Balloon in Haemodialysis Arteriovenous Fistula Stenosis Management.

    Da Zhuang, Kun / Irani, Farah Gillan / Gogna, Apoorva / Too, Chow Wei / Tan, Bien Soo / Tay, Kiang Hiong

    Cardiovascular and interventional radiology

    2023  Volume 46, Issue 9, Page(s) 1144–1153

    Abstract: Arteriovenous fistula (AVF) stenosis is a common problem leading to dialysis access dysfunction. The conventional balloon (CB) is the most commonly used device during angioplasty but suffers from poor durability of results due to neointimal hyperplasia- ... ...

    Abstract Arteriovenous fistula (AVF) stenosis is a common problem leading to dialysis access dysfunction. The conventional balloon (CB) is the most commonly used device during angioplasty but suffers from poor durability of results due to neointimal hyperplasia-mediated recurrence. The drug-coated balloon (DCB) is an adjunct to balloon angioplasty that reduces neointimal hyperplasia, thereby improving post-angioplasty patency. Despite the heterogeneity of DCB clinical trials to date, the evidence suggests that DCBs of different brands are not necessarily equal, and that patient selection, adequate lesion preparation and proper DCB procedural technique are important to realize the benefit of DCB angioplasty.
    MeSH term(s) Humans ; Vascular Patency ; Graft Occlusion, Vascular/diagnostic imaging ; Graft Occlusion, Vascular/therapy ; Constriction, Pathologic ; Hyperplasia ; Cardiovascular Agents ; Coated Materials, Biocompatible ; Time Factors ; Treatment Outcome ; Arteriovenous Shunt, Surgical ; Vascular Access Devices ; Renal Dialysis ; Angioplasty, Balloon/methods ; Arteriovenous Fistula/diagnostic imaging ; Arteriovenous Fistula/therapy ; Paclitaxel
    Chemical Substances Cardiovascular Agents ; Coated Materials, Biocompatible ; Paclitaxel (P88XT4IS4D)
    Language English
    Publishing date 2023-07-06
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 603082-8
    ISSN 1432-086X ; 0342-7196 ; 0174-1551
    ISSN (online) 1432-086X
    ISSN 0342-7196 ; 0174-1551
    DOI 10.1007/s00270-023-03497-9
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    In stock of ZB MED Cologne/Königswinter

    Zs.A 1378: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
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    Jg. 1995 - 2021: Lesesall (1.OG)
    ab Jg. 2022: Lesesaal (EG)

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  7. Article ; Online: A Novel Method of Percutaneous Non-Targeted Spray Application of Fibrin Glue in a Case of Extensive Pneumocystis Jirovecii Bronchopleural Fistulae.

    Chokkappan, Kabilan / Leong, Sum / Tay, Chee Kiang / Sewa, Duu Wen / Too, Chow Wei

    Cardiovascular and interventional radiology

    2021  Volume 44, Issue 4, Page(s) 663–665

    Language English
    Publishing date 2021-01-03
    Publishing country United States
    Document type Letter
    ZDB-ID 603082-8
    ISSN 1432-086X ; 0342-7196 ; 0174-1551
    ISSN (online) 1432-086X
    ISSN 0342-7196 ; 0174-1551
    DOI 10.1007/s00270-020-02708-x
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    Jg. 1995 - 2021: Lesesall (1.OG)
    ab Jg. 2022: Lesesaal (EG)

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  8. Article ; Online: Impact of catheter tip to hepatic vein ostium distance on the validity and prognostication of hepatic venous pressure gradient in cirrhosis.

    Tan, Hiang Keat / Tan, Alfred Bingchao / Teh, Kevin Kim Jun / Gogna, Apoorva / Too, Chow Wei / Leong, Sum / Chang, Jason Pik Eu

    Scientific reports

    2023  Volume 13, Issue 1, Page(s) 16980

    Abstract: Hepatic venous pressure gradient (HVPG) is an accurate measure of portal hypertension in cirrhosis. However, the effect of catheter tip distance from hepatic vein ostium (HVO) on HVPG is unknown. We performed a retrospective study on 228 patients with ... ...

    Abstract Hepatic venous pressure gradient (HVPG) is an accurate measure of portal hypertension in cirrhosis. However, the effect of catheter tip distance from hepatic vein ostium (HVO) on HVPG is unknown. We performed a retrospective study on 228 patients with 307 HVPGs in our institution. The objectives of this study were to assess the effect of catheter position on the validity of HVPG and its prognostication in cirrhosis. In this study, free hepatic vein pressure (FHVP) was considered optimal when difference between FHVP and inferior vena cava pressure was ≤ 2 mmHg. HVPG progressively decreased (p < 0.001) when measured at increasing distance from HVO due to an increasing FHVP (p = 0.036) but an unchanged wedged hepatic vein pressure (p = 0.343). Catheter tip distance > 5 to ≤ 8 cm [odds ratio {OR} 0.16 (95% CI 0.05-0.47), p = 0.001] and > 8 cm [OR 0.14 (95% CI 0.04-0.47), p = 0.002] compared to ≤ 3 cm from HVO were independent predictors of not achieving optimal FHVP. Baseline HVPG ≥ 16 mmHg was strongly associated with deaths due to cirrhosis and liver transplantation for end-stage liver disease compared to HVPG < 16 mmHg when FHVP was optimal (p < 0.001) but not when it was suboptimal (p = 0.359). Our study showed that FHVP is spuriously elevated when measured at > 5 cm from HVO, resulting in inaccurately low HVPG.
    MeSH term(s) Humans ; Hepatic Veins ; Retrospective Studies ; Liver Cirrhosis/complications ; Fibrosis ; Portal Pressure ; Catheters
    Language English
    Publishing date 2023-10-09
    Publishing country England
    Document type Journal Article
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-023-44016-7
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  9. Article: Targeted Anterior Cervical Epidural Blood Patch in a Patient with Spontaneous Intracranial Hypotension.

    Shekhawat, Ravindra Singh / Yong, Ming Hui / Keong, Si Ying Julienne / Chen, Kunihiko / Too, Chow Wei / Hameed, Shahul

    Case reports in neurological medicine

    2022  Volume 2022, Page(s) 8872775

    Abstract: A 45-year-old male was admitted with severe orthostatic headache secondary to spontaneous intracranial hypotension. He had the site of cerebrospinal fluid (CSF) leakage identified at the anterolateral aspect of the C7-T1 spinal level. He first underwent ... ...

    Abstract A 45-year-old male was admitted with severe orthostatic headache secondary to spontaneous intracranial hypotension. He had the site of cerebrospinal fluid (CSF) leakage identified at the anterolateral aspect of the C7-T1 spinal level. He first underwent a conventional posterior-approach cervical epidural blood patch (EBP) which provided immediate relief to the patient's symptoms; however, his symptoms recurred two days later. To better target the anterolateral leakage site, we employed an anterior-approach EBP under computed tomography (CT) guidance. After this attempt, the patient experienced complete relief of his symptoms, and the headache eventually resolved.
    Language English
    Publishing date 2022-09-19
    Publishing country United States
    Document type Case Reports
    ZDB-ID 2629909-4
    ISSN 2090-6676 ; 2090-6668
    ISSN (online) 2090-6676
    ISSN 2090-6668
    DOI 10.1155/2022/8872775
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  10. Article ; Online: Surgical planning using facial fracture 3D models: The role of cyanoacrylate glue and miniplating for anatomical reduction.

    Chew, Khong-Yik / Kok, Yee Onn / Pek, Wan Sze / Too, Chow Wei / Tan, Bien-Keem

    JPRAS open

    2021  Volume 28, Page(s) 19–24

    Abstract: Background: In comminuted facial fractures, peri-operative use of 3D-printed life size models is increasingly a useful adjunct. It allows for preoperative surgical rehearsal and plate bending, to achieve anatomical reduction with reduced operative time ... ...

    Abstract Background: In comminuted facial fractures, peri-operative use of 3D-printed life size models is increasingly a useful adjunct. It allows for preoperative surgical rehearsal and plate bending, to achieve anatomical reduction with reduced operative time and cost. One problem encountered is difficulty contouring the fixation plate whilst maintaining the relative spatial orientation of comminuted fragments. This paper shares an effective method of overcoming this problem.
    Methods: All comminuted facial fracture patients underwent counselling for 3D printing. Pre-printing thresholding and segmentation of each fragment (as directed by the surgeon) were done by the radiologist and the engineering team, using the multi-slice CT Face DICOM data. Life-size 3D-resin models of the fractures were printed. Fast-acting medium consistency cyanoacrylate glue (Zap-A-Gap
    Results/complications: All patients (
    Conclusion: The application of medium consistency fast-acting cyanoacrylate glue and miniplates facilitated the creation of the premorbid facial skeletal model and allowed pre-bending of the plates, thus saving operative time and cost.
    Language English
    Publishing date 2021-01-23
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 2834721-3
    ISSN 2352-5878 ; 2352-5878
    ISSN (online) 2352-5878
    ISSN 2352-5878
    DOI 10.1016/j.jpra.2021.01.001
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