Philipp Seifert
Imaging phantomRadiologyPET-CTBiomedical engineeringPathologyUltrasoundPositron emission tomographyNodule (medicine)Thyroid nodulesScintigraphy3D ultrasoundTransarterial RadioembolizationMinimal activityNuclear medicineThyroid carcinomaCase filesRisk stratificationVolume (compression)ThyroidUltrasonographyImage fusionMedicine
49Publications
9H-index
122Citations
Publications 47
Newest
#1Falk GühneH-Index: 4
#2Philipp SeifertH-Index: 9
Last. Robert DrescherH-Index: 5
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PET/CT with prostate-specific membrane antigen (PSMA)-targeted tracers has been used in the diagnosis and staging of patients with clear cell renal cell carcinoma (ccRCC). For ccRCC primary tumors, PET parameters were shown to predict histologic grade and features. The aim of this study was to correlate PSMA PET/CT with histopathological findings in patients with metastatic recurrence of ccRCC. Patients with ccRCC who underwent PSMA-targeted PET/CT and subsequent histopathological evaluation of ...
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#1Falk GühneH-Index: 4
#2Robert DrescherH-Index: 5
Last. Martin FreesmeyerH-Index: 14
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ABSTRACT Lung scintigraphy was performed to rule out pulmonary embolism in a 37-year-old woman suffering from dyspnea and hypoxemia after routine diagnostics failed to find the underlying disease. Perfusion scans did not show tracer uptake within the lungs despite ventilation scans being unremarkable. Instead, the result suggested a complete right-to-left shunt, which was a conundrum. With the assistance of CT an uncommon congenital vessel aberration turned out to be the cause of this exceptiona...
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PURPOSE To evaluate the microsphere outflow dynamics and residual Ho-166 activity during and after transarterial radioembolization planning and treatment procedures, and to assess the distribution and predilection sites of residual activity in the proprietary delivery set and the microcatheter. MATERIALS AND METHODS Fifteen planning and 12 therapeutic radioembolization procedures were performed with poly-l-lactic acid microspheres loaded with Ho-166. The amount and distribution of residual activ...
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Short-term follow-up examinations could verify ambiguous findings in PET/CT diagnostics, but are often avoided due to radiation and financial burdens. We demonstrate the feasibility of a focused, minimal-activity PET protocol as a supplemental examination for uncertain findings after standard PET/CT. After changing conditions, e.g. patient positioning, preparation and bypassing an interval as well as a targeted tracer change, an additional examination with less than 1 mSv of additional radiation...
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#1Simone SchenkeH-Index: 5
#2Rainer GörgesH-Index: 23
Last. Michael C. Kreissl (Otto-von-Guericke University Magdeburg)H-Index: 5
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Both, ultrasonography but also radionuclide imaging using [99mTc]Pertechnetate or radioactive iodine isotopes are essential tools used during the diagnostic workup of hyperthyroidism with or without structural alterations of the thyroid. Colour duplex sonography and ultrasound elastography may add important information in order to find the cause of the hormone excess. During the last years, also hybrid imaging using SPECT/-(CT) or PET-based methods, such as [124]Iodine-PET/CT or [124]Iodine-PET/...
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#1Philipp SeifertH-Index: 9
Last. Martin FreesmeyerH-Index: 2
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Conventional ultrasound (US) is time-consuming, and results are subjected to high interobserver variability. In this study, the reliability of a novel thyroid US cine loop standard operating procedure (SOP) applied by non-physicians (Medical Technical Assistant, MTA) is investigated. Thirty-three consecutive patients (22 females, 11 males) were enrolled. Patients underwent conventional thyroid US performed by a nuclear medicine physician and additional MTA US cine loop according to a local SOP t...
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#1Rainer GörgesH-Index: 23
#2Andreas BockischH-Index: 77
Last. Philipp SeifertH-Index: 9
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Aus fachfremder Sicht wird der Stellenwert der „konventionellen“ Schilddrusenszintigrafie zur Klarung diverser thyreologischer Fragestellungen international mittlerweile weit niedriger eingeschatzt, als dies dem hierzulande tatigen Nuklearmediziner bewusst ist. Dieser Aufsatz gibt einen Uberblick uber haufig geauserte Kritikpunkte an der Schilddrusenszintigrafie und mochte einiges hierzu klarstellen sowie in berechtigten Fallen fundierte Gegenargumente liefern. In diesem Rahmen wird ein Uberblic...
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#1Falk GühneH-Index: 4
#2Robert DrescherH-Index: 5
Last. Martin FreesmeyerH-Index: 14
view all 5 authors...
Gallium-68-labeled prostate-specific membrane antigen ligands are not only established radiopharmaceuticals for staging of prostate cancer but also accumulate physiologically in nonprostate organs, including the salivary glands. We show the converted application of prostate-specific membrane antigen -positron emission tomography/computed tomography (PSMA-PET/CT) as a dedicated method to depict salivary gland tissue using a region-focused, low-dose protocol. An accessory parotid gland at the righ...
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