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| 1 | Abdominal applications of diffusion-weighted magnetic resonance imaging: Where do we stand?显示文摘Diffusion-weighted imaging (DWI) is one of the magnetic resonance imaging (MRI) sequences providing qualitative as well as quantitative information at a cellular level. It has been widely used for various applications in the central nervous system. Over the past decade, various extracranial applications of DWI have been increasingly explored, as it may detect changes even before signal alterations or morphological abnormalities become apparent on other pulse sequences. Initial results from abdominal MRI applications are promising, particularly in oncological settings and for the detection of abscesses. The purpose of this article is to describe the clinically relevant basic concepts of DWI, techniques to perform abdominal DWI, its analysis and applications in abdominal visceral MR imaging, in addition to a brief overview of whole body DWI MRI. | Ajaykumar C Morani Khaled M Elsayes Peter S Liu William J Weadock Janio Szklaruk Jonathan Russell Dillman Asra Khan Thomas L Chenevert Hero K Hussain | 2013 | World Journal of Radiology2013，5，3： | 12 |
| 2 | Association between facet joint osteoarthritis and the Oswestry Disability Index显示文摘AIM:To investigate the correlation of facet joint osteoarthritis(FJOA) at lumbar levels L4/L5 and L5/S1 and the Oswestry Disability Index(ODI).METHODS:The study involved lumbar MRIs of 591 patients with a mean age of 47.3 years.The MRIs of the lumbar spine were performed on a 1.5 Tesla scanner(Magnetom Avanto,Siemens AG,Erlangen,Germany) using a dedicated receive only spine coil.After initial blinding,each dataset was evaluated by 2 board certified radiologist with more than 5 years experience in musculoskeletal imaging.In total 2364 facet joints were graded.Degenerative changes of the facet joints were evaluated according to the 4-point scale as proposed by Weishaupt et al Functional status was assessed using the ODI.The index is scored from 0 to 100 and interpreted as follows:0%-20%,minimaldisability; 20%-40%,moderate disability; 40%-60%,severe disability; 60%-80%,crippled; 80%-100%,patients are bedbound.Spearman's coefficient of rank correlation was used for statistical analysis,with significance set at P < 0.05.RESULTS:In total 2364 facet joints at lumbar levels L4/5 and L5/S1 were analysed in 591 individuals.FJOA was present in 97%(L4/L5) and 98%(L5/S1).At level L4/5(left/right) 17/15(2.9%/2.5%) were described as grade 0,146/147(24.7%/24.9%) as grade 1,290/302(49.1%/51.1%) as grade 2 and 138/127(23.4%/21.5%) as grade 3.At level L5/S1(left/right) 10/11(1.7%/1.9%) were described as grade 0,136/136(23.0%/23.0%) as grade 1,318/325(53.8%/55.0%) as grade 2 and 127/119(21.5%/20.1%) as grade 3.Regarding the ODI scores,patients' disability had a minimum of 0% and a maximum of 91.11% with an arithmetic mean of 32.77% ± 17.02%.The majority of patients(48.39%) had moderate functional disability(21%-40%).There was no significant correlation between FJOA and ODI on both sides of lumbar level L4/5 and on the left side of lumbar level L5/S1.A weak positive correlation was evaluated between ODI and FJOA on the right side of lumbar level L5/S1.CONCLUSION:The missing correlation of FJOA and ODI confirms our clinical experience that imaging alone is an insufficient approach explaining low back pain.Clinical correlation is imperative for an adequate diagnostic advance in patients with low back pain. | Adel Maataoui Thomas J Vogl Marcus Middendorp Konstantinos Kafchitsas M Fawad Khan | 2014 | World Journal of Radiology2014，6，11： | 6 |
| 3 | Correlation of lumbar lateral recess stenosis in magnetic resonance imaging and clinical symptoms显示文摘AIM To assess the correlation of lateral recess stenosis(LRS) of lumbar segments L4/5 and L5/S1 and the Oswestry Disability Index(ODI).METHODS Nine hundred and twenty-seven patients with history of low back pain were included in this uncontrolled study.On magnetic resonance images(MRI) the lateral recesses(LR) at lumbar levels L4/5 and L5/S1 were evaluated and each nerve root was classified into a 4-point grading scale(Grade 0-3) as normal,not deviated,deviated or compressed.Patient symptoms and disability were assessed using ODI.The Spearman's rank correlation coefficient was used for statistical analysis(P < 0.05).RESULTS Approximately half of the LR revealed stenosis(grade 1-3;52% at level L4/5 and 42% at level L5/S1) with 2.2% and 1.9% respectively reveal a nerve root compression.The ODI score ranged from 0%-91.11% with an arithmetic mean of 34.06% ± 16.89%.We observed a very weak statistically significant positive correlation between ODI and LRS at lumbar levels L4/5 and L5/S1,each bilaterally(L4/5 left:rho < 0.105,P < 0.01;L4/5 right:rho < 0.111,P < 0.01;L5/S1 left:rho 0.128,P < 0.01;L5/S1 right:rho < 0.157,P < 0.001).CONCLUSION Although MRI is the standard imaging tool for diagnosing lumbar spinal stenosis,this study showed only a weak correlation of LRS on MRI and clinical findings.This can be attributed to a number of reasons outlined in this study,underlining that imaging findings alone are not sufficient to establish a reliable diagnosis for patients with LRS. | Annina SplettstoBer M Fawad Khan Bernd Zimmermann Thomas J Vogl Hanns Ackermann Marcus Middendorp Adel Maataoui | 2017 | World Journal of Radiology2017，9，5： | 4 |
| 4 | Magnetic resonance imaging-based interpretation of degenerative changes in the lower lumbar segments and therapeutic consequences显示文摘Intervertebral disc degeneration and facet joint osteoarthritis of the lumbar spine are, among others, wellknown as a cause of low back and lower extremity pain. Together with their secondary disorders they set a big burden on health care systems and economics worldwide. Despite modern imaging modalities, such as magnetic resonance imaging, for a large proportion of patients with low back pain(LBP) it remains difficult to provide a specific diagnosis. The fact that nearly all the lumbar structures are possible sources of LBP, may serve as a possible explanation. Furthermore, our clinical experience confirms, that imaging alone is not a sufficient approach explaining LBP. Here, the Oswestry Disability Index, as the most commonly used measure to quantify disability for LBP, may serve as an easy-toapply questionnaire to evaluate the patient's ability to cope with everyday life. For therapeutic purposes, among the different options, the lumbar facet joint intraarticular injection of corticosteroids in combination with an anaesthetic solution is one of the most frequently performed interventional procedures. Although widely used the clinical benefit of intra-articular steroid injections remains controversial. Therefore, prior to therapy, standardized diagnostic algorithms for an accurate assessment, classification and correlation of degenerative changes of the lumbar spine are needed. | Adel Maataoui Thomas J Vogl M Fawad Khan | 2015 | World Journal of Radiology2015，7，8： | 4 |
| 5 | Reducing the morbidity from extravasation injuries显示文摘 | Khan M S Holmes J D | 2002 | Ann Plast Surg2002，48，6： | 3 |
| 6 | Positron emission tomography scanning in the evaluation of hepatocellular carcinoma显示文摘 | M.Akram Khan Connie S Combs Elizabeth M Brunt Val J Lowe Michael K Wolverson Harvey Solomon Brian T Collins Adrian M.Di Bisceglie | 2000 | Journal of Hepatology2000，，5： | 2 |
| 7 | Gene therapy for myocardial protection: transfection of donor hearts with heat shock protein 70 gene protects cardiac function against ischemia-repeffusion injury 显示文摘 | Jayakumar J Suzuki K Khan M | 2000 | Circulation2000，102，193： | 1 |
| 8 | Expression of human DEC-205 (CD205)multilectin receptor on leukocytes 显示文摘 | Kato M Mcdonald K J Khan S | 2006 | Int lmmunol2006，18，6： | 1 |
| 9 | The prevalence of cardiac valvular insufficiency assessed by transthoracic echocardiography in obese patients treated with appetite-suppressant drugs 显示文摘 | Khan M A Herzog C A Peter J V St | 1998 | N Engl J Med1998，339，11： | 1 |
| 10 | Optimum dietary protein requirement of a Malaysian freshwater catfish Mystus nemurus显示文摘 | Khan M S Aug K J Ambak M A | 1993 | Aquaculture1993，112，： | 1 |
| 11 | Automated detection of lung nodules in multidetector CT:influence of different reconstruction protocols on performance of a software prototype显示文摘 | GURUNG J MAATAOUI A KHAN M | 2006 | Rofo2006，178，1： | 1 |
| 12 | The effect of superoxide dismutase on nitric oxide-mediated and electrical field-stimulated diabetic rabbit cavernosal smooth muscle relaxation显示文摘 | Khan M A Thompson C S Jeremy J Y | 2001 | BJU Int2001，87，： | 1 |
| 13 | Fixed-speed wind generator and wind park modeling for tran-sient stability studies 显示文摘 | TRUDNOWSKI D J KHAN J M PETRITZ E M | 2004 | IEEE Transactions2004，19，4： | 1 |
| 14 | Biofouling in reverse osmosis membranes for seawater desalination: phenomena and prevention 显示文摘 | AsifMatin Z Khan S M J Zaidi | 2011 | Desalination2011，281，： | 1 |
| 15 | Bonding Mechanisms inResistance Microwelding of 316 Low-carbon Vacuum Melted Stainless Steel Wires 显示文摘 | Khan M l Kirn J M Kuntz M L | 2009 | Metallurgical Materials Transactions A2009，40，： | 1 |
| 16 | Distribution and bioavailability of copper in farm effluent显示文摘 | Bolan N S Khan M A Donaldson J | 2003 | Science of the Total Environment2003，309，13： | 1 |
| 17 | Epidermal growth factor receptor inhibition by tyrphostin 51 induces apoptosis in luteinized granulosa cells 显示文摘 | Khan S M Oliver R H Yeh J | 2005 | J Clin Endocrinol Metab2005，90，1： | 1 |
| 18 | Cerebrospinal fluid leaks following cervical spine surgery 显示文摘 | Hannallah D Lee J Khan M | 2008 | J Bone Joint Surg Am2008，90，5： | 1 |
| 19 | Development and evaluation of antigen capture ELISA for early clinical diagnosis of chikungunya显示文摘 | Shukla J Khan M Tiwari M | 2009 | Diagn Microbiol Infec Dis2009，65，2： | 1 |
| 20 | Expression profiling in cancer using cDNA microarrays显示文摘 | Khan J Saal L H Bittner M L | 1999 | Electrophoresis1999，20，2： | 1 |
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