Publications

Development of separation technology for the removal of radium-223 from targeted thorium conjugate formulations. Part II: purification of targeted thorium conjugates on cation exchange columns Janne Olsen Frenvik, Knut Dyrstad, Solveig Kristensen & Olav B. Ryan To cite this artic

Development of Separation Technology for the Removal of Radium-223 from Targeted Thorium Conjugate Formulations Part I: Purification of Decayed Thorium-227 on Cation Exchange Columns. Janne Olsen Frenvik, Knut Dyrstad, Solveig Kristensen & Olav B. Ryan Published in: Drug Developm

The Influence of Polysorbate 80 on the Radiochemical Synthesis of a PET Tracer in the FASTlab Wai Lam Yip, Sverre Arne Sande, David Grace, Dirk Jan In t Veld, Per Christian Sontum, Tina Solvang, Knut Dyrstad Pharm Res 2014 Oct 31. Epub 2014 Oct 31.

Classification of structurally related commercial contrast media by near infrared spectroscopy. Wai Lam Yip, Tom Collin Soosainather, Knut Dyrstad, Sverre Arne Sande Journal of Pharmaceutical and Biomedical Analysis (2013)  

Strategies for multivariate modelling of moisture content in freeze-dried mannitol-containing products by near-infrared spectroscopy. Wai Lam Yip, Ingvil Gausemel, Sverre Arne Sande, Knut Dyrstad Journal of Pharmaceutical and Biomedical Analysis (2012)

Characterization of polysorbate 80 with liquid chromatography mass spectrometry and nuclear magnetic resonance spectroscopy: Specific determination of oxidation products of thermally oxidized polysorbate 80. Erlend Hvattum, Wai Lam Yip, David Grace, Knut Dyrstad Journal of Pharmaceuti

Stabilization of gas bubbles released from water-soluble carbohydrates using amphiphilic compounds: Preparation of formulations and acoustic monitoring of bubble lifetime. Hoff, L. , Foss, P.A., Dyrstad, K., Klaveness, J., Rongved, P. Journal of Surfactants and Detergents (2011)

A critical study on borosilicate glassware and silica-based QMA’s in nucleophilic substitution with [18F]fluoride: Influence of aluminum, boron and silicon on the reactivity of [18F]fluoride. Svadberg, A., Clarke, A., Dyrstad, K., Martinsen, I., Hjelstuen, O.K. Applied Radiation

Site-specific addition of an18F-N-methylaminooxy-containing prosthetic group to a vinylsulfone modified peptide. Olberg, D.E., Hjelstuen, O.K., Solbakken, M., Arukwe, J.M., Dyrstad, K., Cuthbertson, A. Journal of Labelled Compounds and radiopharmaceuticals (2009)

Reducing over-optimism in variable selection by cross-model validation. Anderssen, E., Dyrstad, K., Westad, F., Martens, H. Chemometrics and Intelligent Laboratory Systems (2006).

Tuning the MR properties of blood-stable pH-responsive paramagnetic liposomes. Løkling, K.-E., Skurtveit, R., Dyrstad, K., Klaveness, J., Fossheim, S.L. Int. J. Pharm. (2004).

Quantum chemical descriptors in the formulation of pectin pellets produced by extrusion/spheronisation. Tho, I., Anderssen, E., Dyrstad, K., Kleinebude, K, Sande, S.A. Eur. J. Pharm. Sci. (2002).

Sensitive NIRS measurement of increased moisture in stored hygroscopic freeze dried product. A. Stokvold, K. Dyrstad, F.O. Libnau. Journal of Pharmaceutical and Biomedical analysis (2002).

A formulation development strategy for multivariat kinetic responses. S.A. Sande, K. Dyrstad. Drug Development and Industrial Pharmacy (2001).

Development of pectin matrix tablets for colonic delivery of model drug ropivacain. Ahrabi, S.F., Madsen, G, Dyrstad, K., Sande, S.A., Graffner, C. Eur. J. Pharm. Sci. (2000).

Preparation of polymeric microcapsules: Formulation studies. K. Bjerknes, K. Dyrstad, G. Smistad, I. Agerkvist Drug Dev. and Ind. Pharm. (2000).

A chemometrics method for separation of size dependent and size independent attributes of microspheres for medical ultrasound imaging. Dyrstad, k., Sontum, P.C. and Hoff, L. J. of Microencapsulation (2000).

Determination of air-content in protein microspheres. Kvåle, S., Dyrstad, K., Sontum, P. C and Asbjørnsen, O.A. Pharmaceutical Research (1999).

Acoustics properties of NC100100 and their relationship with the microbubble size distribution. Sontum, P. C., Østensen, J., Dyrstad, K. and Hoff, L. Investigative Radiology (1999).

A multivariate method to predict the water vapor diffusion through polypropylene packaging. K. Dyrstad, J. Veggeland and C. Thomassen. Int. J. Pham. (1999).

An Opportunistic Stability Strategy; Simulation with Real Data.  K. Dyrstad, C. Thomassen and K. Eivindvik. Int. J. Pham. (1999).

Selective improvements in multiquality products assisted by rotated principal components. K. Dyrstad. Chemometrics and Intelligent Laboratory Systems (1998).

Effect of Microsphere Size Distribution on the Ultrasonographic Contrast Efficacy of Airfilled Albumin Microspheres in Dog Hearts. P.C. Sontum, P. Walday, K. Dyrstad, S. Frigstad and C. Christiansen. Investigative Radiology (1997).

Relationship between size of injected microspheres and ultrasound imaging of heart by PLSR.  K. Dyrstad and P.C. Sontum. Pharmaceutical Research (1997).

Optimization of a Production Process from the In-vivo Response of a Diagnostical Drug.  S. Kvåle, K. Dyrstad, T. Jacobsen, O. A. Asbjørnsen and T. Omtveit. Computers chem. Engng. 21, Suppl. S343-S348 (1997).

Farmametri. L. Aanstad, H.R. Bjørsvik, K. Dyrstad, C.P. Tønseth, K. Eivindvik, N.B.Vogt. Kjemi (1996), In memorian proffessor Odd Sergei Borgen.

Relationship between viscosity and determined injection pressure in angiography catheters for common roentgen contrast media. K. Dyvik, K. Dyrstad and A. Tronstad. Acta Radiologica (1995).

Experimental simulation of oil migration – Distribution effects on organic compund groups and on metal/metal ratios. T. Greibrokk, E. Lundanes, H.R. Norli, K. Dyrstad and S.D. Olsen. Chemical Geology (1994).