Research Topics
| M MaasSummaryAffiliation: Academic Medical Center Country: The Netherlands Publications
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Detail Information
Publications
Features of the popliteal lymph nodes seen on musculoskeletal MRI in a Western populationGijsbert Daniel Musters
Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
Skeletal Radiol 40:1041-5. 2011..To asses the features and explore the clinical relevance of popliteal lymph nodes (PLNs) detected on MRI examination for different pathologies of the knee...- Measuring hindfoot alignment radiographically: the long axial view is more reliable than the hindfoot alignment viewMikel L Reilingh
Department of Orthopaedic Surgery, Academic Medical Center, Amsterdam, The Netherlands
Skeletal Radiol 39:1103-8. 2010..The purpose of this study was to compare the intra- and interobserver reliability of hindfoot alignment measurements of both radiographic views in bilateral and unilateral stance... - Recommendations for the assessment and monitoring of skeletal manifestations in children with Gaucher diseaseM Maas
Department of Radiology, Suite G1-211, Academic Medical Center, University of Amsterdam, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
Skeletal Radiol 37:185-8. 2008 
[Imaging techniques in sports medicine]Mario Maas
Academisch Medisch Centrum Universiteit van Amsterdam, Afd Radiologie, Amsterdam, The Netherlands
Ned Tijdschr Geneeskd 153:B409. 2009..Ultrasound is the indicated technique for lesions of superficial soft tissue, such as tendons and muscles. MRI is very valuable in both acute and over-use injuries involving bone and soft tissue...- Quantification of bone involvement in Gaucher disease: MR imaging bone marrow burden score as an alternative to Dixon quantitative chemical shift MR imaging--initial experienceMario Maas
Department of Radiology, Academic Medical Center, Meibergdreef 9, Suite G1 231, 1105 AZ Amsterdam, The Netherlands
Radiology 229:554-61. 2003.... - MRI in clinically asymptomatic neuropathic leprosy feet: a baseline studyM Maas
Department of Radiology, Suite G1 231, Academic Medical Center, Meibergdreef 9, 1105 AZ Amsterdam Zuidoost, The Netherlands
Int J Lepr Other Mycobact Dis 69:219-24. 2001..These changes may relate to the development of ulcerations. MRI may play an important role in detecting feet at risk and may influence clinical decision making... - MR imaging of neuropathic feet in leprosy patients with suspected osteomyelitisMario Maas
Department of Radiology, Suite G1 231, Academic Medical Center, Meibergdreef 9, 1105 AZ Amsterdam Zuidoost, The Netherlands
Int J Lepr Other Mycobact Dis 70:97-103. 2002..Whenever available, MRI could play an important role in detecting osteomyelitis in leprosy patients with long-standing neuropathic feet... 
From Gaucher's disease to metabolic radiology: translational radiological research and clinical practiceMario Maas
Department of Radiology, University of Amsterdam, Amsterdam, The Netherlands
Semin Musculoskelet Radiol 15:301-6. 2011..This role is related to expensive enzyme replacement therapy that requires a surrogate biomarker, such as magnetic resonance imaging. This review paper raises the issue of the potential for metabolic radiology to become a subspecialty...- Imaging and quantifying skeletal involvement in Gaucher diseaseM Maas
Department of Radiology, Academic Medical Centre, Amsterdam, The Netherlands
Br J Radiol 75:A13-24. 2002..Until the ideal quantitative technique is developed, conventional MRI will remain the best diagnostic modality for assessing skeletal complications in Gaucher disease and monitoring response to enzyme replacement therapy... - Dixon quantitative chemical shift MRI for bone marrow evaluation in the lumbar spine: a reproducibility study in healthy volunteersM Maas
Department of Radiology, Academic Medical Center, Amsterdam, The Netherlands
J Comput Assist Tomogr 25:691-7. 2001..The purpose of this work was to explore the reproducibility of fat-fraction measurements using Dixon quantitative chemical shift imaging (QCSI) in the lumbar spine (L3, L4, and L5) of healthy volunteers... - Different dose-dependent correction of MIP-1beta and chitotriosidase during initial enzyme replacement therapyM J van Breemen
Department of Medical Biochemistry, K1 262, University of Amsterdam, Academic Medical Center, 1105 AZ, Amsterdam, The Netherlands
J Inherit Metab Dis 32:274-9. 2009..The sharper response in plasma MIP-1beta to ERT is in line with the observation that especially phagocytes surrounding Gaucher cells express mannose-receptors... - Markers of bone turnover in Gaucher disease: modeling the evolution of bone diseaseL van Dussen
Department of Endocrinology and Metabolism, Academic Medical Center, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands
J Clin Endocrinol Metab 96:2194-205. 2011..Gaucher disease (GD) is a lysosomal storage disorder characterized by abundant presence of macrophages. Bone complications and low bone density are believed to arise from enhanced bone resorption mediated through macrophage-derived factors... - A clinical and radiological follow-up study in leprosy patients with asymptomatic neuropathic feetF J Slim
Department of Rehabilitation Medicine, Academic Medical Centre, Amsterdam, The Netherlands
Lepr Rev 79:183-92. 2008..Since these MRI abnormalities may precede clinical complications of the foot, a follow-up study was performed... - Clinically relevant therapeutic endpoints in type I Gaucher diseaseC E Hollak
Department of Hematology, Academic Medical Center, Amsterdam, The Netherlands
J Inherit Metab Dis 24:97-105; discussion 87-8. 2001..The lack of adequately validated methods of assessment, especially for bone disease, has hindered the establishment of treatment goals and guidelines for treatment optimization... - Dixon quantitative chemical shift imaging is a sensitive tool for the evaluation of bone marrow responses to individualized doses of enzyme supplementation therapy in type 1 Gaucher diseaseC Hollak
Department of Hematology, Academic Medical Center, Meibergdreef 9, Amsterdam, The Netherlands
Blood Cells Mol Dis 27:1005-12. 2001..5 and 0.6 at 1 and 2 years, respectively). Six of 11 patients had a dose increase, which did not clearly affect fat fractions. Dixon-QCSI is a sensitive tool for the measurement of the response of bone marrow to enzyme therapy... - Radiology of Gaucher disease (type 1) and bone manifestations: the Dutch experienceM Maas
Dept. of Radiology, Suite c1-210, Academic Medical Center, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
JBR-BTR 89:318-21. 2006..Both state of the art Quantitative Chemical Shift Imaging (QCSI) as well as alternatives have been subject of research protocols. Our experiences are described... - Proceedings of the SRBR-KBVR osteoarticular section meeting of October 18, 2003 in Antwerp--Part one. Imaging of chronic ankle pain, with a focus on soccer injuriesM Maas
Dept of Radiology, Academic Medical Center, Amsterdam, The Netherlands
JBR-BTR 87:247-9. 2004..The purpose of this presentation is to present the value of each imaging technique (standard radiography, multislice CT and Magnetic Resonance imaging) in the diagnosis of chronic ankle pain... - Different stages of rheumatoid arthritis: features of the synovium in the preclinical phaseM G H van de Sande
Division of Clinical Immunology and Rheumatology, Academic Medical Center University of Amsterdam, Amsterdam, The Netherlands
Ann Rheum Dis 70:772-7. 2011..It is currently unknown whether the disease process starts in the synovium, the primary target of RA, or at other sites in the body... - Immunoglobulin and free light chain abnormalities in Gaucher disease type I: data from an adult cohort of 63 patients and review of the literatureM de Fost
Department of Endocrinology and Metabolism, F4 279, University of Amsterdam, Academic Medical Center, P O Box 22700, 1100 DD Amsterdam, The Netherlands
Ann Hematol 87:439-49. 2008..A beneficial effect of ERT on the occurrence and progression of gammopathies was suggested from longitudinal data... - Magnetic resonance imaging findings of vascular malformations of the lower extremityC C Breugem
Department of Plastic, Reconstructive, and Hand Surgery, Academic Medical Center, University of Amsterdam, The Netherlands
Plast Reconstr Surg 108:878-84. 2001..The surrounding muscle atrophy and multifocal nature of these anomalies are further important considerations when assessing the possibility of intervention... - Taliglucerase alfa leads to favorable bone marrow responses in patients with type I Gaucher diseaseL van Dussen
Department of Endocrinology and Metabolism, Academic Medical Center, University of Amsterdam, The Netherlands
Blood Cells Mol Dis 50:206-11. 2013..There was no influence of antibodies on response parameters. Treatment with taliglucerase alfa results in significant increases in lumbar spine fat fractions, which indicates clearance of Gaucher cells from the bone marrow... - Model-based cartilage thickness measurement in the submillimeter rangeG J Streekstra
Department of Medical Physics, Academic Medical Center, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
Med Phys 34:3562-70. 2007..The good agreement of thickness estimates from CT images with estimates from anatomical sections is promising for clinical application of the method in cartilage integrity staging of the wrist and the ankle... - Upper thoracic spinal fractures in trauma patients - a diagnostic pitfallE J van Beek
Department of Radiology, Academic Medical Center, Amsterdam, The Netherlands
Injury 31:219-23. 2000..Upper thoracic spinal fractures are easily missed in patients with multiple injuries. In patients with neurological symptoms CT and/or MRI is required as soon as the general condition of the patient permits this... - Use of magnetic resonance imaging for the evaluation of vascular malformations of the lower extremityC C Breugem
Department of Plastic, Reconstructive, and Hand Surgery, Academic Medical Center, University of Amsterdam, The Netherlands
Plast Reconstr Surg 108:870-7. 2001..We further suggest a diagnostic flow chart developed on the basis of MRI features designed to help determine the composition of a vascular birthmark when intervention is anticipated... - Prospective study on diagnostic strategies in osteochondral lesions of the talus. Is MRI superior to helical CT?R A W Verhagen
Academic Medical Centre, Amsterdam, The Netherlands
J Bone Joint Surg Br 87:41-6. 2005..We did not find a statistically significant difference between helical CT and MRI. Diagnostic arthroscopy did not perform better than helical CT and MRI for detecting or excluding an osteochondral lesion... - Vascular malformations of the lower limb with osseous involvementC C Breugem
Department of Plastic, Reconstructive and Hand Surgery, Academic Medical Centre, University of Amsterdam, The Netherlands
J Bone Joint Surg Br 85:399-405. 2003..Disparity in leg length of 2 cm or more was observed in ten patients. Of the 16 patients with muscle infiltration, 13 had four or more muscles involved. Treatment by resection alone would require radical surgery... - [Diagnostic imaging of injuries and overuse in soccer players]M C de Jonge
Department of Radiology, Academic Medical Center, University of Amsterdam, The Netherlands
Radiologe 42:778-87. 2002..Basically, injuries in the soccer player can occur anywhere in the body like in every sport. The lower extremities, more specific the knee and ankle, are however the most injured parts... - Identification and use of biomarkers in Gaucher disease and other lysosomal storage diseasesJ M F G Aerts
Departments of Biochemistry, Academic Medical Centre, University of Amsterdam, Amsterdam, The Netherlands
Acta Paediatr Suppl 94:43-6; discussion 37-8. 2005..Conclusion: The use of biomarkers can provide valuable insight into the molecular pathogenesis of LSDs, such as Gaucher disease and Fabry disease... - Plantar fat-pad displacement in neuropathic diabetic patients with toe deformity: a magnetic resonance imaging studySicco A Bus
Department of Internal Medicine, Room F4 252, Academic Medical Center, University of Amsterdam, P O Box 22700, 1100 DE Amsterdam, Netherlands
Diabetes Care 27:2376-81. 2004..The aim of this study was to quantify the association between claw/hammer toe deformity and changes in submetatarsal head (sub-MTH) fat-pad geometry in diabetic neuropathic feet... - Biomarkers for lysosomal storage disorders: identification and application as exemplified by chitotriosidase in Gaucher diseaseJohannes M Aerts
Clinical Proteomics Facility, Academic Medical Center, Amsterdam, The Netherlands
Acta Paediatr Suppl 97:7-14. 2008.... - In-vivo range of motion of the subtalar joint using computed tomographyLijkele Beimers
Department of Orthopedic Surgery, Academic Medical Centre, University of Amsterdam, Amsterdam, The Netherlands
J Biomech 41:1390-7. 2008..3+/-5.9 degrees, mean translation of 2.3+/-1.1 mm). A consistent pattern of range of subtalar joint motion was found for motion of the foot with a considerable eversion and inversion component... - Persistent bone disease in adult type 1 Gaucher disease despite increasing doses of enzyme replacement therapyMaaike de Fost
Haematologica 93:1119-20. 2008 - Palmar dislocation of the lunate bone with complete disruption of all ligaments. A report on two casesLieneke J Draaijers
Department of Plastic and Reconstructive Surgery, Red Cross Hospital, Beverwijk, The Netherlands
Acta Orthop Belg 69:452-4. 2003..They conclude from these cases that the lunate is at risk for remaining avascular after such trauma, so that proximal row carpectomy should be considered as a surgical option in the primary treatment... - Marked elevation of the chemokine CCL18/PARC in Gaucher disease: a novel surrogate marker for assessing therapeutic interventionRolf G Boot
Department of Biochemistry, University of Amsterdam Academic Medical Center, Amsterdam, The Netherlands
Blood 103:33-9. 2004..The potential physiologic consequences of chronically elevated CCL18 in patients with Gaucher disease are discussed... - Reproducibility of foot structure measurements in neuropathic diabetic patients using magnetic resonance imagingSicco A Bus
Department of Internal Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
J Magn Reson Imaging 24:25-32. 2006..To assess the intra- and interobserver agreement of commonly reported foot structure measurements in diabetic patients with neuropathy using magnetic resonance imaging (MRI)... - Vertebra disc ratio as a parameter for bone marrow involvement and its application in Gaucher diseaseErik Jan P Vlieger
Department of Radiology, Academic Medical Center, Meibergdreef 9, G1 209, 1105 AZ Amsterdam, The Netherlands
J Comput Assist Tomogr 26:843-8. 2002..To explore its value as alternative for bone marrow fat fraction measured with Dixon Quantitative Chemical Shift Imaging (Ff) in Gaucher disease (GD)... - Quantification of skeletal involvement in adults with type I Gaucher's disease: fat fraction measured by Dixon quantitative chemical shift imaging as a valid parameterMario Maas
Department of Radiology, Academic Medical Center, Meibergdreef 9, G1-231, 1105 AZ Amsterdam, The Netherlands
AJR Am J Roentgenol 179:961-5. 2002..27-0.55; mean, 0.37; p < 0.001). CONCLUSION: The fat fraction of the lumbar spine when measured with Dixon QCSI is associated with the occurrence of bone complications. It may, therefore, be a clinically useful parameter... - Progressive surgical release of a posttraumatic stiff elbow. Technique and outcome after 2-18 years in 46 patientsRene K Marti
Department of Orthopedic Surgery, Academic Medical Center, Amsterdam, The Netherlands
Acta Orthop Scand 73:144-50. 2002..No patient suffered from joint instability, or an increase in pain. 44 patients were satisfied with the result at the latest follow-up. We found similar improvement in both treatment groups... - Pixel-by-pixel analysis of DCE MRI curve patterns and an illustration of its application to the imaging of the musculoskeletal systemCristina Lavini
Department of Radiology, Academic Medical Center, 1105 AZ Amsterdam, The Netherlands
Magn Reson Imaging 25:604-12. 2007.... - Semiquantitative assessment of skeletal response to enzyme replacement therapy for Gaucher's disease using the bone marrow burden scorePatricia L Robertson
Department of Radiology, The University of Melbourne, Royal Melbourne Hospital, Grattan St, Parkville, Melbourne, Victoria 3050, Australia
AJR Am J Roentgenol 188:1521-8. 2007..The purpose of this study was to evaluate the use of a recently described assessment tool to quantify bone marrow response to enzyme replacement therapy in a cohort of adult patients with type 1 Gaucher's disease... - Prevalence of rib anomalies in normal Caucasian children and childhood cancer patientsJohannes H M Merks
Department of Pediatric Oncology, Emma Children s Hospital, Academic Medical Center, Amsterdam, The Netherlands
Eur J Med Genet 48:113-29. 2005..To evaluate the prevalence of abnormalities of rib development in normal Caucasian children and patients with childhood cancer... - 4D rotational x-ray imaging of wrist joint dynamic motionBart Carelsen
Department of Medical Physics, Academic Medical Center, PO Box 22660, 1100 DD Amsterdam, The Netherlands
Med Phys 32:2771-6. 2005..We expect that 4D-RX will pave the way to improved assessment of joint disorders by detection of 3D dynamic motion patterns in joints... - Superior effects of high-dose enzyme replacement therapy in type 1 Gaucher disease on bone marrow involvement and chitotriosidase levels: a 2-center retrospective analysisMaaike de Fost
Department of Internal Medicine, Endocrinology and Metabolism, F4-279, University of Amsterdam, Academic Medical Center, 1100 DD Amsterdam, The Netherlands
Blood 108:830-5. 2006.... - Malformations of the axial skeleton in the museum Vrolik: II: craniosynostoses and suture-related conditionsRoelof Jan Oostra
Department of Anatomy and Embryology, Academic Medical Center, University of Amsterdam, The Netherlands
Am J Med Genet A 136:327-42. 2005..We hypothesize that the chronically raised intracranial pressure in these cases caused the still open lambdoidal sutures to distend and the occipital bone to protrude... - Substrate reduction therapy of glycosphingolipid storage disordersJohannes M F G Aerts
Department of Medical Biochemistry, Academic Medical Center, University of Amsterdam, Meibergdreef 15, 1105 AZ, Amsterdam, The Netherlands
J Inherit Metab Dis 29:449-56. 2006.... - Evidence-based recommendations for monitoring bone disease and the response to enzyme replacement therapy in Gaucher patientsStephan vom Dahl
Department of Internal Medicine, St Franziskus Hospital, Cologne, Germany
Curr Med Res Opin 22:1045-64. 2006..Enzyme replacement therapy reverses many of the clinical signs of Gaucher bone disease but early assessment and treatment, and regular monitoring, are essential in optimising outcomes... - Adamantinoma in childhood: report of six cases and review of the literatureRick van Rijn
Department of Radiology, Academic Medical Center Amsterdam, Meibergdreef 9, Amsterdam, Zuid Oost 1105 AZ, The Netherlands
Pediatr Radiol 36:1068-74. 2006..Adamantinoma is a rare slow-growing malignant bone tumour... - Bifid ribs and unusual vertebral anomalies diagnosed in an anatomical specimen. Gorlin syndrome?Roelof Jan Oostra
Department of Anatomy and Embryology, Academic Medical Center, University of Amsterdam, The Netherlands
Am J Med Genet A 140:2135-8. 2006..Since the genes involved in GS (Patched2) and opb (rab23) both play an essential role in the hedgehog signaling pathway, it is likely that the cause of the anomalies presented here is to be sought in impaired functioning of this pathway... - Low frequency maintenance therapy with imiglucerase in adult type I Gaucher disease: a prospective randomized controlled trialMaaike de Fost
Department of Endocrinology and Metabolism, F4 279, University of Amsterdam, Academic Medical Center P O Box 22700, 1100 DD Amsterdam, The Netherlands
Haematologica 92:215-21. 2007..In order to reduce the burden of the intravenously administered enzyme, a low frequency of administration was prospectively studied in patients with stable and minor disease following ERT... - Familial partial lipodystrophy phenotype resulting from a single-base mutation in deoxyribonucleic acid-binding domain of peroxisome proliferator-activated receptor-gammaHoushang Monajemi
Academic Medical Center, Department of Vascular Medicine, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
J Clin Endocrinol Metab 92:1606-12. 2007..The LMNA form is called FPLD2 (MIM 151660) and the PPARG form is called FPLD3 (MIM 604367)... - Suspected atlantoaxial rotatory fixation-subluxation: the value of multidetector computed tomography scanning under general anesthesiaHenk D Been
Department of Orthopedic Surgery, Academic Medical Center, Amsterdam, The Netherlands
Spine (Phila Pa 1976) 32:E163-7. 2007..Clinical case reports and radiologic study... - Increased plasma macrophage inflammatory protein (MIP)-1alpha and MIP-1beta levels in type 1 Gaucher diseaseMarielle J van Breemen
Department of Medical Biochemistry, Academic Medical Center, University of Amsterdam, Meibergdreef 15, 1105AZ, Amsterdam, The Netherlands
Biochim Biophys Acta 1772:788-96. 2007..In conclusion, MIP-1alpha and MIP-1beta are elevated in plasma of Gaucher patients and remaining high levels of MIP-1beta during therapy seem associated with ongoing skeletal disease... - Elevated plantar pressures in neuropathic diabetic patients with claw/hammer toe deformitySicco A Bus
Department of Internal Medicine, Academic Medical Center, University of Amsterdam, P O Box 22700, 1100DE, Amsterdam, The Netherlands
J Biomech 38:1918-25. 2005..Distal displacement of the plantar fat pad is suggested to be the underlying mechanism in this association. These conditions increase the risk for plantar ulceration in these patients... - Stress fractures in the lower extremity. The importance of increasing awareness amongst radiologistsFerco H Berger
Department of Radiology, Academic Medical Center, University of Amsterdam, Meibergdreef 9, 1105 AZ Amsterdam ZO, The Netherlands
Eur J Radiol 62:16-26. 2007..CT can be beneficial in a limited number of patients, but should not be used routinely... - The anterior ankle impingement syndrome: diagnostic value of oblique radiographsJohannes L Tol
Academic Medical Center, University of Amsterdam, Postbox 22700, 1100 DD Amsterdam, The Netherlands
Foot Ankle Int 25:63-8. 2004..Oblique anteromedial impingement (AMI) radiographs were hypothesized to be a relevant adjunct, because of their utility to detect these anteromedially located osteophytes...