Ajay Chavan

ORCID: 0000-0002-6398-1470
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About
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Research Areas
  • Aortic aneurysm repair treatments
  • Aortic Disease and Treatment Approaches
  • Renal and Vascular Pathologies
  • Infectious Aortic and Vascular Conditions
  • Advanced X-ray and CT Imaging
  • Cardiac, Anesthesia and Surgical Outcomes
  • MRI in cancer diagnosis
  • Organ Transplantation Techniques and Outcomes
  • Abdominal vascular conditions and treatments
  • Central Venous Catheters and Hemodialysis
  • Peripheral Artery Disease Management
  • Vascular anomalies and interventions
  • Cerebrovascular and Carotid Artery Diseases
  • Cardiac Valve Diseases and Treatments
  • Vascular Procedures and Complications
  • Liver Disease and Transplantation
  • Cardiac Arrest and Resuscitation
  • Total Knee Arthroplasty Outcomes
  • Pancreatitis Pathology and Treatment
  • Neuroendocrine Tumor Research Advances
  • Radiomics and Machine Learning in Medical Imaging
  • Orthopaedic implants and arthroplasty
  • Venous Thromboembolism Diagnosis and Management
  • Cholangiocarcinoma and Gallbladder Cancer Studies
  • Trauma Management and Diagnosis

Lifeline Hospital
2023-2024

Sanjay Gandhi Post Graduate Institute of Medical Sciences
2022

Jiading District Central Hospital
2020

Jupiter (United States)
2020

Jupiter Medical Center
2020

Klinikum Oldenburg
2006-2018

Medizinische Hochschule Hannover
1996-2005

Prospectively identifying patients whose renal function or blood pressure will improve after the correction of renal-artery stenosis has not been possible. We evaluated whether a high level resistance to flow in segmental arteries both kidneys (indicated by resistance-index values at least 80) can be used prospectively select appropriate for treatment.

10.1056/nejm200102083440603 article EN New England Journal of Medicine 2001-02-08

To evaluate the role of spiral computed tomography (CT) in diagnosis renal arterial stenoses.In 22 patients with suspected renovascular hypertension, CT angiography arteries was compared digital subtraction (DSA). For each patient, peak transit time t (from intravenous injection to maximum enhancement abdominal aorta) determined a bolus 15 mL contrast medium. Spiral scanning started at level superior mesenteric artery delay + 5 seconds after start 100-150 medium.Spiral demonstrated multiple...

10.1148/radiology.189.1.8372191 article EN Radiology 1993-10-01

Background Aortic dissection with branch obstruction is associated high morbidity and mortality. Fenestration of the flap to relieve distal vessel ischemia at present largely performed surgically. The surgical mortality are high, because most patients poor candidates for anesthesia or surgery. Methods Results Nine percutaneous fenestrations (one additional stenting infrarenal true aortic lumen) were under local in seven dissection. presenting symptoms abdominal angina claudication. By...

10.1161/01.cir.96.7.2124 article EN Circulation 1997-10-07

Hepatic involvement in hereditary hemorrhagic telangiectasia (HHT) is highly variable and may lead to severe clinical symptoms such as heart failure. This controlled, prospective study defined sonographic criteria for hepatic HHT. Color Doppler sonography pulsed were used 25 patients with HHT liver involvement, 20 without cirrhosis, disease. The diagnosis of manifestation was confirmed by computed tomography and/or angiography. Liver size, parenchymal changes the liver, vessel diameters,...

10.1053/jhep.2003.50197 article EN Hepatology 2003-05-01

The 'frozen' elephant trunk technique allows for single-stage repair of combined aortic arch and descending aneurysms using a 'hybridprosthesis' with stented non-stented end. This report summarizes the operative- follow-up data (mean 14 months) this new treatment.Between 09/01 4/04, 22 patients (62+/-9 years; 9 female) different pathologies (15 dissections, 7 aneurysms) were operated on after approval from local institutional review board. end hybridprosthesis was deployed in aorta through...

10.1016/j.ejcts.2005.02.046 article EN European Journal of Cardio-Thoracic Surgery 2005-05-27

Purpose: Sentinel lymph node (LN) dissection (sLND) using a magnetometer and superparamagnetic iron oxide nanoparticles (SPION) as tracer was successfully applied in prostate cancer (PCa). The feasibility of sentinel LN (SLN) visualization on MRI after intraprostatic SPION injection has been reported. In the present study, results preoperative identification SLNs outcome subsequent intraoperative magnetometer-guided sLND following were studied intermediate- high-risk PCa. Patients methods: A...

10.2147/ijn.s173182 article EN cc-by-nc International Journal of Nanomedicine 2018-10-01

To investigate whether endovascular stent-grafts implanted during the early phase of an aortic endografting program have advantages over conventional surgical procedures for treatment infrarenal aneurysm (AAA).In first months program, 37 patients (36 men; mean age 67.9 +/- 7.1 years, range 55 to 86) underwent AAA repair with implantation a Vanguard (n = 17) or Talent 20) bifurcated stent-graft. Data collected perioperative period and in follow-up were compared retrospectively matched group...

10.1177/152660280000700203 article EN Journal of Endovascular Therapy 2000-04-01

Spiral CT in the form of angiography (CTA) provides a new method for investigation large vessels. 52 patients with suspected renovascular hypertension were examined by CTA and arterial DSA. The computer tomographic angiographic findings 124 renal arteries compared. Sensitivity demonstrating artery stenosis was 95%, relevant stenoses it actually reached 100%. Specificity 92%. Positive/negative prediction value 85% proved outstandingly good or excluding superior to other imaging methods...

10.1055/s-2008-1032579 article EN RöFo - Fortschritte auf dem Gebiet der Röntgenstrahlen und der bildgebenden Verfahren 1994-12-01

Abstract Background: Endovascular stent‐graft placement is emerging as a novel treatment option for patients with diseases of the descending thoracic aorta. However, currently no consensus guidelines exist to direct uniformity in procedures well pre‐ and postprocedural patient management, unlike that management other cardiovascular disorder. Accordingly, aim present survey was assess variations aortic practice among different subspecialties Germany. Methods: An interdisciplinary...

10.1002/ccd.20857 article EN Catheterization and Cardiovascular Interventions 2006-11-06

Abstract Background Ovarian hormones exert direct and indirect influences on the brain; however, little is known about how these impact causal brain connectivity. Studying female at a single time point may be confounded by distinct hormone phases. Despite this, menstrual cycle often overlooked. The primary objective of this pilot study was to evaluate resting-state connectivity during early follicular mid-luteal phases corresponding low vs high estradiol progesterone, respectively. Methods...

10.1101/2024.06.07.598022 preprint EN cc-by-nc-nd bioRxiv (Cold Spring Harbor Laboratory) 2024-06-08

Purpose: To evaluate the role of percutaneous transcatheter coil-occlusion in management uncontrollable postoperative hematuria due to iatrogenic arteriovenous (AV) fistula. Material and Methods: In 2 patients, AV fistulas were occluded with catheter-guided superselective coil embolization. Results: both cases, occlusion was successful. Only small parts (less than 10%) parenchyma had be sacrificed. No hypertension occurred. Conclusion: Percutaneous embolization is a useful alternative...

10.1177/02841851960373p222 article EN Acta Radiologica 1996-05-01
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