John Fleming

ORCID: 0000-0003-4149-8151
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About
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Research Areas
  • Inhalation and Respiratory Drug Delivery
  • Medical Imaging Techniques and Applications
  • Refrigeration and Air Conditioning Technologies
  • Radiomics and Machine Learning in Medical Imaging
  • Air Quality Monitoring and Forecasting
  • Chronic Obstructive Pulmonary Disease (COPD) Research
  • Atomic and Subatomic Physics Research
  • Hemodynamic Monitoring and Therapy
  • Advanced X-ray and CT Imaging
  • MRI in cancer diagnosis
  • Advanced MRI Techniques and Applications
  • Chronic Kidney Disease and Diabetes
  • Liver Disease Diagnosis and Treatment
  • Heat Transfer and Optimization
  • Cardiac Imaging and Diagnostics
  • Pediatric Urology and Nephrology Studies
  • Aerosol Filtration and Electrostatic Precipitation
  • Hepatocellular Carcinoma Treatment and Prognosis
  • Radiation Dose and Imaging
  • Phase Equilibria and Thermodynamics
  • Radiopharmaceutical Chemistry and Applications
  • Cardiac and Coronary Surgery Techniques
  • Cardiovascular Function and Risk Factors
  • Radioactive Decay and Measurement Techniques
  • Medical Imaging and Pathology Studies

National Institute of Environmental Health Sciences
2025

University Hospital Southampton NHS Foundation Trust
2010-2024

NIHR Biomedical Research Centre at The Royal Marsden and the ICR
2023-2024

National Institute for Health Research
2024

NIHR Southampton Respiratory Biomedical Research Unit
2011-2016

Air Liquide (France)
2015

University of Southampton
1977-2014

British Nuclear Medicine Society
2004-2014

Weatherford College
2014

University of Rochester
2013

These guidelines have been adopted by the British Nuclear Medicine Society.

10.1097/01.mnm.0000136715.71820.4a article EN Nuclear Medicine Communications 2004-07-15

10.1016/s0022-5223(19)35998-7 article EN publisher-specific-oa Journal of Thoracic and Cardiovascular Surgery 1986-05-01

Anagrelide is a member of the imidazo (2,1-b) quinazolin-2-one series compounds, with powerful antiaggregating effect on platelets. During studies in humans, anagrelide small doses has produced thrombocytopenia. We therefore evaluated it treatment thrombocytosis, and to date, platelet levels 15 17 patients primary thrombocythemia, 2 polycythemia vera 1 patient chronic granulocytic leukemia thrombocytosis have been well controlled use this agent. Induction 1.0 1.5 mg given orally every six...

10.1056/nejm198805193182002 article EN New England Journal of Medicine 1988-05-19

Describes a general method for the measurement of radioactivity in an organ using anterior, posterior and lateral views. Its application to liver colloid imaging is described as liver/spleen ratio widely used indication cirrhosis.

10.1088/0031-9155/24/1/017 article EN Physics in Medicine and Biology 1979-01-01

10.1016/s1350-4533(01)00087-x article EN Medical Engineering & Physics 2001-10-01

A technique is described for using computed tomography (CT) images attenuation correction and quantification in SPECT. The CT are aligned with the corresponding SPECT slices Hounsfield units converted to linear coefficient values radionuclide. map thus produced used provide required reconstruction. has been evaluated both a non-anatomical an anatomical phantom giving mean accuracy quantifying activity of various features phantoms 2.6% (range 0.3%-4.0%). value performing scatter prior...

10.1097/00006231-198902000-00002 article EN Nuclear Medicine Communications 1989-02-01

A novel gamma-ray camera is proposed that based on the Compton effect. The basis of device a segmented semiconductor detector which able to locate successive interaction points in multicollision trajectories and associated energy losses. In this way, conic section can be computed an image plane for each emission from point source object. An overall constructed by summation individual ellipses. effect measurement errors investigated theoretically simulation, leads favourable estimates...

10.1049/piee.1977.0203 article EN Proceedings of the Institution of Electrical Engineers 1977-01-01

Two-dimensional (2D or planar) imaging with (99m)Tc radiolabels enables quantification of whole-lung and regional lung depositions for orally inhaled drug products. This article recommends standardized methodology 2D studies. Simultaneous anterior posterior a dual-headed gamma camera is preferred, but single-headed also acceptable. Correction raw data the effects ray attenuation considered essential accurate quantification, instance, using transmission scanning flood-field source (57)Co....

10.1089/jamp.2012.1su4 article EN Journal of Aerosol Medicine and Pulmonary Drug Delivery 2012-12-01

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStructural Studies by Nuclear Magnetic Resonance. II. Aldehyde 2,4-DinitrophenylhydrazonesGerasimos J. Karabatsos, Bernard L. Shapiro, Floie M. Vane, John S. Fleming, and Jane RatkaCite this: Am. Chem. Soc. 1963, 85, 18, 2784–2788Publication Date (Print):September 1, 1963Publication History Published online1 May 2002Published inissue 1 September 1963https://pubs.acs.org/doi/10.1021/ja00901a025https://doi.org/10.1021/ja00901a025research-articleACS...

10.1021/ja00901a025 article EN Journal of the American Chemical Society 1963-09-01

Regional cerebral blood flow, volume, fractional oxygen extraction and consumption were measured by positron emission tomography in six patients with sickle cell disease to see how delivery the brain is maintained presence of both anemia a low affinity hemoglobin. Both regional flow volume found be markedly increased compared values obtained from 14 normal subjects same age range. The mean was not significantly different two groups. Mean groups also but individual atrophy on CT-scans three...

10.1161/01.str.17.4.692 article EN Stroke 1986-07-01

A scintillation camera with digital data store has been used to assess renal function. Analysis of the renogram by deconvolution, using an on-line computer, shows promise as a means expressing function in terms tubular transit times for 123I-Hippuran.

10.1259/0007-1285-48-570-481 article EN British Journal of Radiology 1975-06-01

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA nuclear magnetic resonance study of .sigma.-cyclopentadienyl(triethylphosphine)copper(I)George M. Whitesides and John S. FlemingCite this: J. Am. Chem. Soc. 1967, 89, 12, 2855–2859Publication Date (Print):June 1, 1967Publication History Published online1 May 2002Published inissue 1 June 1967https://pubs.acs.org/doi/10.1021/ja00988a011https://doi.org/10.1021/ja00988a011research-articleACS PublicationsRequest reuse permissionsArticle...

10.1021/ja00988a011 article EN Journal of the American Chemical Society 1967-06-01

Abstract Clinical research on the deposition of inhaled substances (e.g. medications, airborne contaminants, fumes) in lungs necessitates anatomical models airways. Current conducting airway lack three‐dimensional (3D) reality as little information is available literature distribution airways space. This a limitation to assessment or predictions particle relation subject’s anatomy. Detailed full topology and morphology thus required model tree realistically. paper presents length, diameter,...

10.1046/j.0021-8782.2001.00018.x article EN Journal of Anatomy 2002-02-01

Summary Conventional creatinine clearances involving urine collections over 2, 4 and 24 hours clearance predicted from plasma concentrations without collection were compared to glomerular filtration rate (GFR) estimated by 99mTc DTPA in 171 patients with a wide range of GFR. All methods had standard errors the estimate GFR greater than predictions formulae. Predictions formulae coefficients variation approximately 23% when isotopically determined Creatinine these equations stable renal...

10.1136/pgmj.67.783.42 article EN Postgraduate Medical Journal 1991-01-01

Abstract Aerosols of nedocromil sodium labelled with 99Tcm were delivered on 20 separate occasions to healthy male volunteers. Planar and single photon emission computerized tomography (SPECT) gamma scintigraphy immediately performed assess the pulmonary regional distribution aerosol. On a occasion volunteers imaged using X-ray computed (CT). Alignment SPECT CT images was marked anatomical features anterior lateral skin outlines. provided data for attenuation correction used define lung...

10.1259/0007-1285-67-793-46 article EN British Journal of Radiology 1994-01-01

1. Simultaneous radioisotopic (99Tc-DTPA) gastric emptying measurements and paracetamol pharmacokinetic studies were performed in eight healthy male volunteers with without levodopa (125 mg orally). 2. In the absence of gamma camera imaging showed rapid mono or biexponential all subjects plasma concentration-time curves for displayed a single major peak. 3. presence time to 90% was prolonged from 32 +/- 24 min 81 20 (P less than 0.01). Gastric interrupted by plateau phase six this pattern...

10.1111/j.1365-2125.1990.tb03601.x article EN British Journal of Clinical Pharmacology 1990-01-01
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