Publications by authors named "Frank Ahlhelm"

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Improved Beam-hardening Reduction in CT - Impact on Image Quality and Diagnostic Certainty in Emergency Imaging of the Brain.
Foroud Aghapour Zangeneh, Gonçalo G Almeida, Susanne Bensler, Reza Omidi Varmezani, Thomas Sartoretti, Frank Johannes Ahlhelm

Acad Radiol· October 2025

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Pencil beam scanning proton therapy for the treatment of craniopharyngioma complicated with radiation-induced cerebral vasculopathies: A dosimetric and linear energy transfer (LET) evaluation.
Alessandra Bolsi, Lorenzo Placidi, Alessia Pica, Frank J Ahlhelm, Marc Walser

Radiother Oncol· August 2020

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Prognostic impact of the "Sekhar grading system for cranial Chordomas" in patients treated with pencil beam scanning proton therapy: an institutional analysis.
Anna-Lena Hottinger, Beat Bojaxhiu, Frank Ahlhelm, Marc Walser, Barbara Bachtiary

Radiat Oncol· May 2020

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Early recognition of thiamine deficiency: ocular motor deficits in a patient with nutritional deprivation due to persistent antibiotic-related nausea.
Benedikt Wiggli, Sandra Kapitza, Frank Ahlhelm, Alexander A Tarnutzer

Infection· February 2020

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Whole spine localizers of magnetic resonance imaging detect unexpected vertebral fractures.
Malwina Kaniewska, Johannes Maria de Beus, Frank Ahlhelm, Alexander Mameghani, Karim Eid

Acta Radiol· June 2019

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Whole-ventricular irradiation for intracranial germ cell tumors: Dosimetric comparison of pencil beam scanned protons, intensity-modulated radiotherapy and volumetric-modulated arc therapy.
Dora Correia, Dario Terribilini, Stefan Zepter, Alessia Pica, Nicola Bizzocchi, Frank Ahlhelm

Clin Transl Radiat Oncol· February 2019

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The retroneural approach: an alternative technique for lumbar transforaminal epidural steroid injections.
Stefan Ignjatovic, Reza Omidi, Rahel A Kubik-Huch, Suzanne Anderson, Frank J Ahlhelm

Acta Radiol· December 2018

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Radiation Necrosis and White Matter Lesions in Pediatric Patients With Brain Tumors Treated With Pencil Beam Scanning Proton Therapy.
Beat Bojaxhiu, Frank Ahlhelm, Marc Walser, Lorenzo Placidi, Ulrike Kliebsch

Int J Radiat Oncol Biol Phys· March 2018

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Clinical and Radiologic Outcomes in Adults and Children Treated with Pencil-Beam Scanning Proton Therapy for Low-Grade Glioma.
Shahed N Badiyan, Stephan Ulmer, Frank J Ahlhelm, Anna S M Fredh, Ulrike Kliebsch

Int J Part Ther· July 2017

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Vascular Anatomy Predicts the Risk of Cerebral Ischemia in Patients Randomized to Carotid Stenting Versus Endarterectomy.
Mandy D Müller, Frank J Ahlhelm, Alexander von Hessling, David Doig, Paul J Nederkoorn

Stroke· May 2017

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Proton Irradiation with Hyperthermia in Unresectable Soft Tissue Sarcoma.
Niloy R Datta, Ralf Schneider, Emsad Puric, Frank J Ahlhelm, Dietmar Marder

Int J Part Ther· December 2016

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Basic Principles and Clinical Applications of Magnetic Resonance Spectroscopy in Neuroradiology.
Stephan Ulmer, Martin Backens, Frank J Ahlhelm

J Comput Assist Tomogr· May 2016

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Is there a role for conventional MRI and MR diffusion-weighted imaging for distinction of skull base chordoma and chondrosarcoma?
Uta Müller, Rahel A Kubik-Huch, Carmen Ares, Eugen B Hug, Roland Löw, Frank J Ahlhelm

Acta Radiol· February 2016

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Decision for intravenous thrombolysis in a young patient with acute vertical gaze palsy.
Athina Papadopoulou, Frank Johannes Ahlhelm, Philippe Lyrer, Jens Kuhle

Acta Neurol Belg· September 2015

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Intrathecal gadolinium for magnetic resonance myelography in spontaneous intracranial hypotension: valuable but may be risky--reply.
Athina Papadopoulou, Frank J Ahlhelm, Till Sprenger

JAMA Neurol· June 2014

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Endovascular treatment of cervical artery dissection: ten case reports and review of the literature.
Frank Ahlhelm, Robyn Melanie Benz, Stephan Ulmer, Philippe Lyrer, Christoph Stippich

Interv Neurol· September 2013

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Symptomatic intracranial hemorrhage after stroke thrombolysis: the SEDAN score.
Daniel Strbian, Stefan Engelter, Patrik Michel, Atte Meretoja, Lucka Sekoranja, Frank J Ahlhelm

Ann Neurol· May 2012

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Carotid artery stenting using a novel self-expanding braided nickel-titanium stent: feasibility and safety porcine trial.
Frank Ahlhelm, Ralf Kaufmann, Dirk Ahlhelm, Mai Fang Ong, Christian Roth

Cardiovasc Intervent Radiol· September 2009

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Treatment of wide-necked intracranial aneurysms with a novel self-expanding two-zonal endovascular stent device.
Frank Ahlhelm, Christian Roth, Ralf Kaufmann, Gernot Schulte-Altedorneburg, Bernd F M Romeike

Neuroradiology· December 2007

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Apparent diffusion coefficient in vasogenic edema and reactive astrogliosis.
Thomas Hagen, Frank Ahlhelm, Werner Reiche

Neuroradiology· November 2007

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The ProDisc-C prosthesis: clinical and radiological experience 1 year after surgery.
Abdullah Nabhan, Frank Ahlhelm, Kaveh Shariat, Tobias Pitzen, Oliver Steimer

Spine (Phila Pa 1976)· August 2007

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[Taxane coated balloon angioplasty inhibits proliferation of the neointima after stent angioplasty in an animal model].
Frank Ahlhelm

Radiologe· May 2007

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Simplification of the residual lumen geometry in measuring carodid stenosis.
Gernot Schulte-Altedorneburg, Frank J Ahlhelm

AJNR Am J Neuroradiol· May 2007

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Reversal of flow during carotid artery stenting: use of the Parodi antiembolism system.
Iris Q Grunwald, Panagiotis Papanagiotou, Tobias Struffert, Maria Politi, Christoph Krick, Frank Ahlhelm

Neuroradiology· March 2007

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ADC mapping of normal human brain.
Frank Ahlhelm, Thomas Hagen, Guenther Schneider, Ulrich Dorenbeck, Abdullah Nabhan

Med Sci Monit· November 2004

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