Johann-Martin Hempel

ORCID: 0000-0002-9647-5136
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About
Contact & Profiles
Research Areas
  • Glioma Diagnosis and Treatment
  • Meningioma and schwannoma management
  • MRI in cancer diagnosis
  • Radiation Dose and Imaging
  • Advanced Neuroimaging Techniques and Applications
  • Radiomics and Machine Learning in Medical Imaging
  • Brain Metastases and Treatment
  • Medical Imaging Techniques and Applications
  • Radiology practices and education
  • Head and Neck Surgical Oncology
  • Acute Ischemic Stroke Management
  • Advanced X-ray and CT Imaging
  • Ear Surgery and Otitis Media
  • Cerebrovascular and Carotid Artery Diseases
  • Cutaneous Melanoma Detection and Management
  • Bone and Joint Diseases
  • Advanced MRI Techniques and Applications
  • Artificial Intelligence in Healthcare and Education
  • Tumors and Oncological Cases
  • Medical Practices and Rehabilitation
  • Tracheal and airway disorders
  • Ear and Head Tumors
  • Pituitary Gland Disorders and Treatments
  • Cerebral Venous Sinus Thrombosis
  • Management of metastatic bone disease

University of Tübingen
2016-2023

Universitätsklinikum Tübingen
2019-2022

University Children's Hospital Tübingen
2018-2021

Society of Interventional Radiology
2018

Klinik und Poliklinik für Psychosomatische Medizin und Psychotherapie
1934-2014

Johannes Gutenberg University Mainz
2012-2014

In-Q-Tel
2012

A scorecard to evaluate magnetic resonance imaging (MRI) findings during the course of leptomeningeal metastases (LM) has been proposed by Response Assessment in Neuro-Oncology (RANO) group.To explore feasibility Leptomeningeal (LANO) scorecard, cerebrospinal MRIs 22 patients with LM from solid tumors were scored 10 neuro-oncologists and 9 neuroradiologists at baseline follow-up after treatment. Raters blinded for clinical data including Agreement between raters single items was evaluated...

10.1093/neuonc/noz024 article EN Neuro-Oncology 2019-01-23

The underlying etiology of ischemic stroke remains unknown in up to 30% patients.This study explored the causal role complicated (American Heart Association-lesion type VI) nonstenosing carotid artery plaques (CAPs) cryptogenic (CS).CAPIAS (Carotid Plaque Imaging Acute Stroke) is an observational multicenter that prospectively recruited patients aged older than 49 years with acute was restricted territory a single on brain magnetic resonance imaging (MRI) and unilateral or bilateral CAP (≥2...

10.1016/j.jacc.2020.09.532 article EN cc-by-nc-nd Journal of the American College of Cardiology 2020-11-01

Complicated nonstenosing carotid artery plaques (CAPs) are an under-recognized cause of stroke.The purpose this study was to determine whether complicated CAP ipsilateral acute ischemic anterior circulation stroke (icCAP) associated with recurrent or transient attack (TIA).The CAPIAS (Carotid Plaque Imaging in Acute Stroke) multicenter prospectively recruited patients restricted the territory a single artery. (AHA-lesion type VI) were defined by multisequence, contrast-enhanced magnetic...

10.1016/j.jacc.2022.03.376 article EN cc-by-nc-nd Journal of the American College of Cardiology 2022-05-03

Suspected recurrence of thyroid carcinoma is a diagnostic challenge when findings both radio iodine whole body scan and ultrasound are negative. PET/CT MRI have shown to be feasible for detection recurrent disease. However, the added value consensus reading by radiologist nuclear medicine physician, which has been deemed helpful in clinical routines, not investigated. This study aimed investigate impact combined FDG-PET/ldCT on locally TC nodal metastases high-risk patients with special...

10.1186/s40644-016-0096-y article EN cc-by Cancer Imaging 2016-11-03

Alcoholic liver cirrhosis (ALC) is a commonly accepted indication for transplantation (LT). Any alcohol consumption considered contraindication LT. However, the assessment of abstinence in everyday practice mostly relies on patient self-reporting, which must be highly unreliable. After consumption, ethanol eliminated by dehydrogenase, with methanol accumulating blood. Methanol, known to sensitive and specific indicator recent has not been used verifying LT assessments yet. Therefore, purpose...

10.1002/lt.23468 article EN Liver Transplantation 2012-05-10

Purpose: Traumatic brain injury is an important health concern in equestrian sports. Nevertheless, the use of safety helmets, especially recreational riding, reported to be rare. The purpose this study was perform first matched-pairs analysis traumatic with regard helmets.Materials and methods: In a multicenter retrospective database 40 patients (mean age: 35 ± 17.13 years; 34 female & 6 male) were combined 20 matched pairs based on age group, gender trauma mechanism. Admission computed...

10.1080/02688697.2017.1409874 article EN British Journal of Neurosurgery 2017-12-05

Identification and localization of ischemic stroke (IS) lesions is routinely performed to confirm diagnosis, assess severity, predict disability plan rehabilitation strategies using magnetic resonance imaging (MRI). In basic research, lesion segmentation necessary study complex peri-infarction tissue changes. Moreover, final volume a critical outcome evaluated in clinical preclinical experiments determine therapy or intervention success. Manual segmentations are but they require specialized...

10.7150/thno.51887 article EN cc-by-nc Theranostics 2021-01-01

To investigate the diagnostic performance of in vivo ADC-based stratification integrated molecular glioma grades.

10.3390/jcm10163451 article EN Journal of Clinical Medicine 2021-08-04

The expression of somatostatin receptors in meningioma is well established. First, suggestions a prognostic impact SSTRs have been made. However, the knowledge based on few investigations small cohorts. We recently analyzed all five known large cohort over 700 meningiomas and demonstrated significant correlations with WHO tumor grade other clinical characteristics. therefore expanded our dataset additionally collected information about radiographic recurrence progression as clinically...

10.1007/s10143-021-01651-w article EN cc-by Neurosurgical Review 2021-10-02
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