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(Click for frequent words.) 67 stress echocardiography 67 scintigraphy 65 perfusion imaging 64 detecting coronary artery 63 x ray computed tomography 63 myocardial perfusion 62 Matritech proprietary 62 PET CT fusion 62 tomography PET 62 cardiac magnetic resonance 62 electron beam computed tomography 62 SPECT imaging 62 invasive angiography 62 Fine needle aspiration 62 Computed tomography 62 abdominal computed tomography 62 computed tomography SPECT 61 SPECT CT imaging 61 angiography CTA 61 x ray angiography 61 coronary computed tomography 61 myocardial perfusion imaging 61 single photon emission 61 Electron beam 61 Magnetic resonance 61 computed tomography angiography 61 Single photon emission 61 Myocardial Perfusion Imaging 61 MR spectroscopy 60 Coronary CTA 60 cardiac computed tomography 60 Positron emission tomography PET 60 Multidetector CT 60 positron emission 60 transrectal ultrasound guided 60 Intra operative 60 CT angiography CTA 60 Accelerated Partial Breast Irradiation 60 preoperative staging 59 FDG-PET/CT 59 Angiographic 59 computed tomographic 59 EBCT 59 bone scintigraphy 59 radionuclide imaging 59 transurethral 59 Endoscopic ultrasound 59 powder diffraction 59 Computed Tomographic 59 Positron emission tomography 59 microRNA profiling 59 PET tracers 59 multislice 58 Transurethral 58 Transesophageal 58 arthrography 58 spiral computed tomography 58 computer tomography CT 58 keratectomy 58 multidetector 58 immunohistochemical 58 attenuation correction 58 Computed tomographic 58 ultrasound elastography 58 CT angiograms 58 dosimetric 58 F FDG PET 58 colonography 58 #F FDG 58 #F FDG PET 58 myocardial viability 58 Optical Coherence Tomography 58 visit RadiologyInfo.org 58 Scintigraphy 58 Doppler echocardiography 58 computerized tomography scans 58 FDG PET imaging 58 transesophageal echocardiography 58 computed tomography CT angiography 57 X ray computed tomography 57 conventional angiography 57 Technetium #m 57 endoscopic retrograde cholangiopancreatography ERCGrant Parpan 57 immunohistochemical analysis 57 SPECT MPI 57 Computed tomography CT 57 arteriography 57 #mTc 57 Ultrasonography 57 renal biopsy 57 Tomographic 57 pharmacologic stress 57 Positron emission 57 angiography CCTA 57 Coronary angiography 57 Breast Specific 57 transthoracic echocardiography 57 ultrasound mammography 57 immunohistochemical staining 57 magnetic resonance spectroscopy 57 transthoracic 57 proteomic analysis 57 cardiac perfusion 57 multidetector computed tomography 57 Histologic 57 fine needle aspiration 57 vascular ultrasound 57 X ray fluorescence spectroscopy 57 flurpiridaz F 57 positron emission tomography scans 57 Optical coherence tomography 56 radiotracers 56 radiation dosimetry 56 Confocal microscopy 56 semiquantitative 56 bone bruise Bettis 56 neutron activation analysis 56 Cardiac catheterization 56 dimensional echocardiography 56 lymphatic mapping 56 guided percutaneous 56 Iodine counteracts 56 prostate carcinomas 56 #m Tc 56 helical CT 56 Coronary CT angiography 56 excisional biopsy 56 transvaginal sonography 56 stratifying patients 56 magnetic resonance angiography 56 electrocardiography ECG 56 percutaneous biopsy 56 SPECT 56 perfusion defects 56 Preoperative 56 catheter angiography 56 radiographic imaging 56 transient elastography 56 Contrast Agent 56 Positron Emission Tomography 56 fluorescein angiography 56 PET imaging 56 morphometry 56 BSGI MBI 56 multidetector row 56 radiotracer 56 transabdominal 56 resonance imaging 56 vein ablation 56 MSCT 55 transcranial Doppler 55 ECG gated 55 pulmonary angiography 55 gadolinium enhanced 55 diagnostic modality 55 Fourier transform infrared spectroscopy 55 tomography scans 55 preoperative MRI 55 #F FDG PET CT 55 transcranial Doppler ultrasound 55 Positron Emission Tomography PET 55 Diffusion weighted 55 photothermal 55 multimodality imaging 55 MGd 55 gated SPECT 55 photon laser 55 computed tomography scanning 55 transesophageal 55 DCE MRI 55 PET positron emission tomography 55 4D imaging 55 metastatic lymph nodes 55 Aquilion Premium 55 Single Photon Emission Computed 55 coronary CT angiography 55 computed tomography CT 55 magnetic resonance NMR 55 PET myocardial perfusion 55 Mitomycin C 55 perfusion abnormalities 55 Stereotactic Radiosurgery 55 X ray angiography 55 CT angiography 55 PET CT scans 55 COR Analyzer 55 radiographic examinations 55 gamma imaging 55 intensity modulated 55 cCTA 55 Lumpectomy 55 Stereotactic radiosurgery 55 Molecular imaging 55 Intensity Modulated 55 intracoronary 55 gamma spectrometry 55 coronary arteriography 55 CT PET CT 55 MRI computed tomography 55 fundus photography 55 multislice CT 54 transrectal ultrasound 54 endoscopic resection 54 eBx 54 HRTEM 54 Spectrometry 54 spirometric 54 fluorescence spectroscopy 54 Tomography SPECT 54 FDG PET 54 densitometry 54 Breast Specific Gamma 54 multimodality 54 intraobserver 54 histopathologic examination 54 interobserver 54 optical coherence tomography OCT 54 VerifyNow P#Y# 54 Radiographic 54 Flow cytometry 54 FDG uptake 54 liners promos voicetracking 54 computerized tomographic 54 MR angiography 54 Radiofrequency ablation 54 tumor excision 54 electrophysiologic 54 mCi 54 FDG PET scans 54 vascular insufficiency 54 noninvasive imaging 54 Attrius 54 Mohs micrographic surgery 54 Hyperspectral imaging 54 pretargeting 54 radiolabeled antibodies 54 magnetic resonance tomography 54 PET CT scanning 54 positron emission tomography PET 54 Computed Tomography 54 PiB PET 54 Imaging BSGI 54 computed tomographic angiography 54 DaTSCAN 54 hepatic lesions 54 magnetic resonance CMR 54 cytotoxicity assays 54 Vizilite 54 thoracolumbar spine 54 histopathological 54 mammographically 54 SPECT Single Photon 54 diffusion tensor 54 histologic examination 54 intracardiac ultrasound catheter 54 electrochemical detection 54 Surgical excision 54 X ray microscopy 54 noninvasive technique 54 vascular anatomy 54 X ray absorptiometry 53 plain radiographs 53 T1 weighted 53 MRI positron emission 53 positron emission tomography computed 53 polyarticular symmetrical subtypes 53 magnetic resonance spectroscopy MRS 53 synchrotron X ray 53 pathologic correlation 53 tumorigenicity 53 sputum cytology 53 rotational angiography 53 transcranial 53 transrectal ultrasonography 53 Ultrasonographic 53 Autograft 53 Electrodiagnostic 53 abdominal pelvic 53 Attrius TM PET 53 Vitrification 53 antiangiogenic agent 53 thermogram 53 cardiac perfusion imaging 53 imaging MRI 53 digital subtraction angiography 53 Electromyography 53 guided radiofrequency ablation 53 malignant nodules 53 unoperational caught 53 x ray mammography 53 Intraoperative 53 Computerized tomography 53 mammography ultrasound 53 PET tracer 53 pelvic ultrasound 53 DEXA dual 53 CT perfusion 53 conventional coronary angiography 53 acetabular fractures 53 coronary CTA 53 echocardiography 53 neuropsychological assessment 53 elective PCI 53 iterative reconstruction 53 Angiogram 53 CT positron emission 53 FDG PET CT 53 multidetector CT 53 VisuMax 53 colonoscopic 53 cerebral angiography 53 ultrasonographic 53 endorectal coil 53 tomograph 53 stereotactic radiotherapy 53 Mass Spectrometry MS 53 CT colonography CTC 53 TappingMode 53 Humate P 53 Abdominal ultrasound 53 thyroid nodules 53 invasive coronary angiography 53 X ray mammography 53 Diffusion Weighted 53 needle aspiration 53 Virtual colonoscopy 53 force microscopy AFM 53 radiation therapy IGRT 52 magnetic resonance MR 52 sestamibi 52 myocardial revascularization 52 proton magnetic resonance 52 SPECT scans 52 adnexal masses 52 diffusion MRI 52 MDCT angiography 52 corneal topography 52 pelvic lymphadenectomy 52 Cystoscopy 52 vibrometer 52 F FDG 52 biopsy specimens 52 endoscopic retrograde 52 computerized axial tomography scans 52 fluorodeoxyglucose positron emission tomography 52 malignant polyps 52 Finite Element Method 52 Plain radiographs 52 Doppler imaging 52 intraventricular 52 focal ablation 52 T1 weighted images 52 guided radiotherapy IGRT 52 Immunohistochemical staining 52 Perfusion CT 52 Bone density 52 Doppler ultrasonography 52 thermal ablation 52 prostatic tissue 52 Screening Trial DMIST 52 anterior cervical discectomy 52 CT fluoroscopy 52 CT coronary angiography 52 tissue perfusion 52 BMS# 52 magnetic resonance 52 computed tomography 52 cardiac CT angiography 52 tracer uptake 52 tomographic images 52 Spectral Imaging 52 PIB PET 52 spectroscopic technique 52 tibial plateau fractures 52 SPECT CT 52 left ventricular diastolic 52 trans urethral resection 52 EUS FNA 52 angio 52 noninvasive ultrasound 52 chest radiography 52 micrometastasis 52 IG IMRT 52 computed tomography scans 52 RadCube 52 DSCT 52 pancreatectomy 52 Multivariate analysis 52 cytoreductive surgery 52 isotope dilution 52 mouse mammary 52 enzymatic hydrolysis 52 angiography intravascular ultrasound IVUS 52 echo planar 52 radiofrequency catheter ablation 52 bioluminescent imaging 52 genomewide 52 immunofluorescence 52 optical sectioning 52 CT pulmonary angiography 52 Color Doppler 52 suboptimal echocardiograms 52 adipose derived stem cells 52 Ion Trap 52 spectroscopic imaging 52 radioiodine therapy 52 cardiac angiography 52 submucosal 52 Situ Hybridization FISH 52 computerized tomography CT 52 coronary angiogram 52 submandibular gland 52 gauge vitrectomy 52 DynaCT 52 pathologic diagnosis 52 HistoScanning 52 electroretinography 52 urothelial cancer 52 Tomography 51 proton MR spectroscopy 51 hypofractionated 51 radiolabeling 51 situ hybridisation 51 PET Positron Emission Tomography 51 dose ionizing radiation 51 MRI fMRI 51 spectrophotometry 51 FISH fluorescence 51 somatosensory evoked potentials 51 histological examination 51 fluorodeoxyglucose 51 pulmonary infiltrates 51 Mixed Oxide MOX 51 bioassays 51 Sonographic 51 Tc#m 51 fluoroscopic imaging 51 synovial tissue 51 DEXA scans 51 Cone Beam Computed Tomography 51 fluoroscopy guided 51 Sentinel lymph node 51 radiologists cardiologists 51 renal parenchyma 51 urography 51 vesicle fusion 51 radiofrequency RF 51 conformal radiotherapy 51 imaging modality 51 angiography 51 fluoroscopic 51 Sonography 51 lymph node dissection 51 Computerized Tomography 51 biopsied tissue 51 nanosurgery 51 optical coherence tomography 51 radionuclide detection 51 radiolabeled ZEVALIN 51 swallowing radioactive iodine 51 EBUS FNA 51 prostate cancer PCa 51 gadobutrol 51 X ray ultrasound 51 Capsule endoscopy 51 Mitochondrial DNA testing 51 solvent detergent 51 Electron Beam 51 radioactive tracers 51 electrodiagnostic 51 spectroscopy MRS 51 stent stenosis 51 histopathologic 51 USNRC 51 Functional magnetic resonance 51 Nondestructive 51 laparoscopic radical prostatectomy 51 functional neuroimaging 51 intravital 51 nanoprobe 51 Nanoprobe 51 ventricular myocardium 51 Radio Frequency Ablation 51 MTT assay 51 venography 51 High Flux Isotope 51 electron beam tomography 51 radionuclide bone 51 tomography scanner 51 prostate abnormalities 51 PSA nadir 51 balloon dilation 51 EBUS 51 preconcentration 51 emission tomography 51 thyroglobulin 51 SPECT PET 51 Scanning Probe Microscopy 51 color Doppler sonography 51 intraductal 51 color Doppler ultrasound 51 carotid artery stenosis 51 interobserver agreement 51 plutonium americium 50 Electronic Brachytherapy 50 tumor resection 50 Magnetic resonance imaging 50 ultrasound magnetic resonance 50 multiphoton microscopy 50 #F fluorodeoxyglucose 50 circular dichroism 50 radiographic findings 50 malignant prostate 50 #.#T MRI 50 D dimer 50 UV Visible 50 urine cytology 50 intratumoral 50 transurethral resection 50 LZH 50 Ultrasound imaging 50 FTIR spectroscopy 50 tomography scan 50 fetal echocardiography 50 PET CT scanners 50 transoral 50 underwent coronary angiography 50 lymphadenectomy 50 extracranial 50 genotoxicity 50 histopathologic findings 50 functional MRI fMRI 50 Nanoindentation 50 Magnetic Resonance MR 50 coronary angiography 50 stereotactic radiosurgery SRS 50 carotid artery ultrasound 50 surgical oncologists 50 stylus profilers 50 polyp detection 50 Diffusion Tensor Imaging 50 cardiac PET 50 nondestructive evaluation 50 percutaneous coronary 50 Metastatic colorectal cancer 50 synchrotron x ray 50 FLT PET 50 ultrasound computed tomography 50 external beam radiotherapy 50 computerized axial tomography 50 lung nodule 50 endovascular aneurysm repair EVAR 50 prove Titian authorship 50 cardiac catheterisation 50 postoperative chemotherapy 50 EP #R 50 Echocardiography 50 x ray diffraction 50 mediastinoscopy 50 Endotoxin 50 guaiac 50 T2 weighted images 50 computed tomography PET CT 50 fluoroscopic images 50 MDCTA 50 fluoroscopy ultrasound 50 Discovery CT# HD 50 ALA PDT 50 Ultraviolet UV 50 posttranslational modification 50 extracolonic findings 50 HFIR 50 PET CT imaging 50 Bacteriological 50 HRCT 50 ductal lavage 50 MR arthrography 50 intensity modulated radiotherapy 50 percutaneous cryoablation 50 computed tomography CT scanner 50 Radiographs 50 Tesla magnetic resonance 50 ProstaScint 50 collagen crosslinking 50 denervation 50 radiologic imaging 50 bone erosions 50 microdebrider 50 sentinel lymph node biopsy 50 echocardiographic 50 hyperpolarization 50 CBRN Chemical Biological 50 absorption spectroscopy 50 gene amplification 50 laquinimod administered 50 enhanced MR angiography 50 MRgFUS 50 myocardial tissue 50 mitomycin C 50 immunohistochemistry IHC 50 posterolateral fusion 50 biodistribution 50 intracavitary 50 Multidetector CT MDCT 50 coronary artery stenosis 50 SD OCT 50 perfusion MRI 50 Nd YAG laser 50 Mammosite 50 electroencephalographic 50 Dr. Fonstein 50 MALDI-TOF/TOF 50 Positron Emission 50 3T MRI 50 intraoperative imaging 50 Fourier transform infrared 50 Elekta Axesse 50 magnetic resonance spectrometers 50 physico chemical 50 Annexin V 50 stereotactic body 50 X rays ultrasounds 50 actinic 50 imaging spectroscopy 50 Electrophoresis 50 tomographic 50 Radiofrequency 50 PROSTASCINT 50 sonographically guided 49 quantitative coronary angiography 49 Biocompatibility 49 STEEN Solution ™ 49 noninvasive diagnostic 49 computed tomographic scans 49 thoracic aortic 49 endoscopic ultrasound EUS 49 coronary endothelial 49 emission spectroscopy 49 chronic osteomyelitis 49 Cardiac CT 49 deoxyglucose 49 PET Scan 49 cortical atrophy 49 computed tomographic CT 49 NOD SCID mice 49 chemoradiation therapy 49 radical cystectomy 49 computerized tomography CT scan 49 computed tomography scanners 49 CT perfusion imaging 49 gamma irradiation 49 computed tomographic scan 49 angle resolved photoemission 49 biophotonic 49 magnetic resonance angiography MRA 49 scanning tunneling microscopy 49 quantitative computed tomography 49 Force Microscopy 49 CT Scans 49 karyotyping 49 tomography PET CT 49 computed tomography scan 49 gamma emitting 49 invasive diagnostic 49 morphometric analysis 49 cardiac catherization 49 microsphere therapy 49 cited krypton strontium 49 Butyrate 49 Computerized Tomography CT 49 fatty infiltration 49 DEXA 49 thorium uranium 49 Tissue Doppler 49 phototoxicity 49 X ray absorption spectroscopy 49 laser irradiation 49 meniscal repair 49 overnight polysomnography 49 cell lysate 49 TRUS biopsy 49 radioprotection 49 enucleation 49 genomewide association study 49 BRAF V#E mutation 49 Radio Astronomy MPIfR 49 Sample Preparation 49 endomicroscopy 49 .# rem 49 CT computerized tomography 49 commercializing interventional 49 BSGI 49 scintigraphic 49 FT IR spectroscopy 49 annexin V 49 protein adsorption 49 endoscopic ultrasound 49 Zn DTPA 49 alpha emitters 49 domain optical coherence 49 osteolytic 49 ICANL 49 MR imaging 49 multiplanar 49 hamartoma 49 carotid ultrasound 49 thrombo embolic 49 Creatinine 49 computerized tomography scan 49 thoracoscopic 49 AHWR 49 AdreView 49 decompressive surgery 49 laser scanning confocal 49 scanning microscopy 49 imaging FMRI 49 florbetaben 49 gastrointestinal endoscopic 49 beam radiotherapy 49 bone marrow aspiration 49 bacterial virulence 49 fetal aneuploidy 49 finite element modeling 49 transmission electron microscopy 49 cellularity 49 pulmonary nodules 49 axillary dissection 49 CT Computed Tomography 49 dobutamine stress 49 nondiagnostic 49 meniscal tears 49 photoelectron spectroscopy 49 Ultrasound scans 49 gadolinium contrast 49 color Doppler 49 endoscopic retrograde cholangiopancreatography 49 NewTom VG 49 underwent angiography 49 tomography imaging 49 Victor Dricks spokesman 49 Chemical Vapor Deposition 49 islet isolation 49 confocal laser 49 cardiologists radiologists 49 NIRCam 49 spectroradiometers 49 postoperative pulmonary 49 Attrius ™ PET 49 Cadence QRC Extraction 49 mammographic 49 cervical fusion 49 PET CT scan 49 transrectal 49 Photonic Microsystems IPMS 49 T2 weighted MRI 49 Zevalin consolidation 49 GRASPA ® 49 reagent kit 48 benign nodules 48 trans retinoic acid ATRA 48 therapy IMRT 48 chemisorption 48 Neuradiab 48 MRIs magnetic resonance 48 radiosurgical 48 vastus lateralis 48 mGy 48 colorectal liver metastases 48 cryo electron microscopy 48 Nanopore 48 spermidine 48 Multiscale 48 Immunohistochemistry IHC 48 doctor Jack McPhilemy 48 gastric adenocarcinoma 48 ProNova 48 functional endoscopic sinus 48 thyroidectomy 48 Sensor Array 48 axillary lymph node 48 PETNET 48 node dissection 48 enhanced sonography 48 uranium deuteride 48 nonradioactive 48 LINAC 48 diffusion weighted 48 nutlin 3a 48 computed tomography CT scans 48 leachables 48 Noninvasive 48 Dosimetry 48 Lipolysis 48 androgen suppression 48 DXA 48 .1 millisieverts 48 fMRI functional 48 androgen ablation 48 electroencephalograms 48 SIR Spheres 48 radiocontrast 48 radiotherapeutic 48 heterotopic ossification 48 melanin synthesis 48 breast thermography 48 RF ablation 48 SPECT scan 48 multiphoton 48 spokeswoman Viktoria Mitlyng 48 locoregional recurrence 48 photoactivation 48 #beta estradiol 48 bulk vitrification 48 Sodickson 48 NMES 48 neutron radiation 48 fluoroscopically guided 48 ICs lasers 48 radiochemical 48 gadolinium enhancing lesions 48 Multiparameter 48 scanning electron microscopy 48 nodal metastases 48 Computerized Axial Tomography 48 Diffusion tensor imaging 48 Imaging fMRI 48 Magnevist 48 PET scanning 48 bone density scans 48 magnetoencephalography MEG 48 magnetic resonance imaging 48 dosimetry 48 slice computerized tomography 48 mass spectroscopy 48 neuro interventional 48 agarose 48 beta. 48 subretinal 48 radioembolization 48 cellulase enzymes 48 electrophysiology procedures 48 chemical syntheses 48 microcalcifications 48 sonographic appearance 48 E. faecalis 48 DEXA bone density 48 radionuclide 48 cranial irradiation 48 autofluorescence 48 Computed Tomography CT 48 amine oxidase 48 ablations 48 muscle biopsies 48 Stimulated Emission 48 DEXA scan 48 Positron Emission Mammography PEM 48 UPLC MS 48 Sentaurus 48 confocal scanning 48 FDDNP 48 radiation therapy SBRT 48 Demron M 48 lumbar disc herniation 48 dimensional ultrasonography 48 computed tomography magnetic resonance 48 breast lesions 48 computed tomography CT scan 48 technetium #m 48 nitrite nitrate 48 emits gamma rays 48 computed tomography SPECT imaging 48 renal scarring 48 3T MR 48 Chairman Srikumar Banerjee 48 bovine thrombin 47 functional Magnetic Resonance 47 dimensional computed tomography 47 vincristine sulfate 47 matrix interferences 47 mediastinum 47 osteoblastic 47 Functional MRI 47 biological radiological 47 antitumor effect 47 radiologically 47 groundwater contaminant 47 molecular imaging professionals 47 SNM SmartBrief 47 ionizing irradiation 47 magnetic resonance imagers 47 tiuxetan 47 Technique Developed 47 hyperintense lesions 47 myocardial perfusion PET 47 fluorescence microscopes 47 TSQ Quantum 47 C# fullerenes 47 Applied Polymer 47 radical nephrectomy 47 viral inactivation 47 microscopy techniques 47 near infrared NIR 47 SILEX 47 catalytically active 47 PET radiopharmaceuticals 47 MDCT scans 47 gamma camera 47 immunohistochemistry 47 CAT Scans 47 tumoral 47 electron microprobe 47 nerve decompression 47 Aflatoxins 47 barium sulfate 47 neutron beams 47 hyperintensities 47 induced oxidative stress 47 Ionizing radiation 47 EtO 47 radiopharmaceutical distribution 47 confocal microscopy 47 invasive biopsy 47 UV germicidal 47 microbiological organisms 47 chemiluminescence 47 recurrent NSCLC 47 Doppler ultrasound 47 Silicon Solar Cells 47 bone densitometry 47 postoperative infections 47 HSCT 47 ultrasonography 47 perfusion CT 47 axillary lymph nodes 47 brain perfusion scans 47 CT computed tomography 47 inhalational 47 fiducials 47 electrocardiography 47 NMR spectroscopy 47 VATS lobectomy 47 biodetection 47 cerebral angiogram 47 paramagnetic 47 core needle biopsy 47 transgene expression 47 heart catheterization 47 EEG recordings 47 CT scanning 47 Elekta Synergy R 47 microspectroscopy 47 Amphinex ® 47 intracardiac echocardiography ICE 47 near infrared spectroscopy 47 perfusion 47 Cavity Ring Down 47 biologically inert 47 musculoskeletal ultrasound 47 Radilex 47 photosensitizing 47 radioactive nuclides 47 DCIS lesions 47 busulfan 47 axillary lymph node dissection 47 HDR brachytherapy 47 Rheological 47 T2 weighted 47 endothelial keratoplasty 47 aerodigestive tract 47 electrospray ionization 47 computerized tomography 47 tomosynthesis 47 bioleach 47 diagnostic cardiac catheterization 47 abdominal ultrasound 47 Z Backscatter technology 47 tomotherapy 47 albumin bound paclitaxel 47 Heat Dissipation 47 X ray scattering 47 RSEI 47 polyaniline 47 carmustine 47 microbubble 47 millicuries 47 based morphometry 47 Reflow Oven 47 QEEG 47 dimensional reconstructions 47 anticarcinogenic effects 47 allogeneic transplant 47 lumbar intervertebral 47 ellipsometry 47 psoralen 47 cytoreduction 47 Biomedical Magnetic Resonance 47 ultrahigh resolution 47 X ray fluorescence 47 recombinant interferon